Patent application number | Description | Published |
20090207504 | Optical System for Taking Image - An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution. | 08-20-2009 |
20090207506 | Optical Lens System for Taking Image - An optical lens system for taking image comprises four lens elements from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave object-side surface and a concave image-side surface, at least one of the object-side surface and the image-side surface of the second lens element being aspheric, inflection points being formed on the image-side surface of the second lens element; a third lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a fourth lens element with negative refractive power; and an aperture stop being located between the object side and the second lens element. | 08-20-2009 |
20090251802 | Optical System for Taking Image - An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution. | 10-08-2009 |
20100118417 | Optical System for Taking Image - An optical system for taking image comprises three lens elements with refractive power, wherein a first lens element with positive refractive power includes at least one aspheric surface, a second lens element with negative refractive power, and a third lens element with negative refractive power includes at least one aspheric surface, which are mounted orderly from the object side to the image side. By such arrangements, the volume of the lens assembly can be reduced, and can obtain high resolution. | 05-13-2010 |
20110013069 | Imaging lens system - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T | 01-20-2011 |
20110115962 | IMAGE-CAPTURING LENS ASSEMBLY - This invention provides an image-capturing lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens element with positive refractive power having a concave object-side surface and a convex image-side surface, the object-side and image-side surfaces thereof being aspheric; a fourth lens element with negative refractive power having a concave image-side surface on which at least one inflection point is formed, the object-side and image-side surfaces thereof being aspheric; and a stop disposed between an imaged object and the first lens element; wherein there are four lens elements with refractive power. Such an arrangement of optical elements can effectively reduce the size of the lens assembly, mitigate the sensitivity of the optical system and enable the lens assembly to obtain a higher resolution. | 05-19-2011 |
20110157449 | Photographing Lens Assembly - This invention provides a photographing lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a second lens element with negative refractive power having a concave object-side surface and a concave image-side surface; a third lens element with negative refractive power, the object-side and image-side surfaces thereof being aspheric; a fourth lens element with negative refractive power having a concave image-side surface on which at least one inflection point is formed; and an aperture stop disposed between an imaged object and the second lens element; wherein there are four lens elements with refractive power. Such an arrangement of optical elements can effectively reduce the size of the lens assembly, attenuate the sensitivity of the optical system and enable the lens assembly to obtain higher resolution. | 06-30-2011 |
20110157453 | IMAGE CAPTURING LENS SYSTEM - This invention provides an image capturing lens system comprising, in order from an object side to an image side: a first lens element with negative refractive power having a concave image-side surface; a second lens element with positive refractive power having a convex image-side surface; a third lens element with positive refractive power, at least one of the two surfaces thereof being aspheric; a fourth lens element with negative refractive power, both the two surfaces thereof being aspheric; and a stop disposed between the first and third lens elements, wherein there are four lens elements with refractive power. | 06-30-2011 |
20110194196 | OPTICAL LENS SYSTEM FOR TAKING IMAGE - An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface and an object-side surface cemented to an image-side surface of the first lens element; a third lens element with negative refractive power; a fourth lens element with positive refractive power having a concave image-side surface and at least one inflection point; and an aperture stop located between an object to be photographed and the third lens element. In the optical lens system for taking image, the number of the lens elements with refractive power being limited to four. A focal length of the optical lens system for taking image is f, a focal length of the first lens element is f1, they satisfy the relation: | 08-11-2011 |
20110249346 | IMAGING LENS ASSEMBLY - This invention provides an imaging lens assembly including five lens elements with refractive power, in order from an object side toward an image side: a first lens with positive refractive power having a convex object-side surface, a second lens with negative refractive power, a third lens having a concave object-side surface, a fourth lens with positive refractive power having an object-side surface and a convex image-side surface, and at least one of both surfaces thereof being aspheric, a fifth lens with negative refractive power having a concave image-side surface with at least one inflection point formed thereon. An aperture stop is positioned between an imaged object and the second lens. The imaging lens assembly further comprises an electronic sensor on which an object is imaged. With such arrangement, the size and the optical sensitivity of the lens assembly can be reduced. A high image resolution is also obtained. | 10-13-2011 |
20110261470 | PHOTOGRAPHING OPTICAL LENS ASSEMBLY - This invention provides a photographing optical lens assembly, from an object side to an image side in order, comprising a first lens element with positive refractive power having a convex object-side surface, a second lens element with negative refractive power having a concave image-side surface, a third lens element with positive refractive power, a fourth lens element with negative refractive power having a concave image-side surface, both the two surfaces of the fourth lens thereof being aspheric. And an aperture stop is positioned between the first element and the second lens element. There are four lens elements with refractive power in the lens assembly. | 10-27-2011 |
20110279910 | PHOTOGRAPHING OPTICAL LENS ASSEMBLY - This invention provides a photographing optical lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave object-side surface and a concave image-side surface, the object-side and image-side surfaces thereof being aspheric; a third lens element having a concave image-side surface, the object-side and image-side surfaces thereof being aspheric, at least one inflection point formed on the image-side surface; wherein there are three lens elements with refractive power. Such an arrangement of lens elements can effectively reduce the total track length of the lens assembly, attenuate the sensitivity of the optical system and obtain higher resolution. | 11-17-2011 |
20120013998 | OPTICAL IMAGING LENS ASSEMBLY - This invention provides an optical imaging lens assembly, in order from an object side toward an image side including: a first lens element with positive refractive power having a convex object-side surface, a second lens element with negative refractive power having a concave object-side surface and a concave image-side surface, a third lens element with positive refractive power having a concave object-side surface and a convex image-side surface, a fourth lens element with negative refractive power having a concave image-side surface, and the two surfaces being aspheric; wherein the optical imaging lens assembly further comprises an aperture stop disposed between an imaged object and the first lens element, and there are four lens elements with refractive power. | 01-19-2012 |
20120044403 | OPTICAL IMAGE-CAPTURING LENS ASSEMBLY - This invention provides an optical image-capturing lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power; a second lens element with negative refractive power; a third lens element, the object-side and image-side surfaces thereof being aspheric; and a fourth lens element having a concave image-side surface, the object-side and image-side surfaces thereof being aspheric and at least one inflection point being formed on at least one of the object-side and image-side surfaces thereof. The present lens assembly is further provided with a stop and an electronic sensor for image formation of an object. The stop is disposed between the object and the second lens element, and the electronic sensor is disposed at an image plane. | 02-23-2012 |
20120062783 | OPTICAL IMAGING LENS ASSEMBLY - The present invention provides an optical imaging lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave object-side surface; and a third lens element with negative refractive power having a concave image-side surface, at least one of the object-side and image-side surfaces thereof being aspheric. With the aforementioned arrangement of lens elements, the total track length of the optical imaging lens assembly can be effectively reduced, the sensitivity of the optical system can be attenuated, a large field of view can be achieved and the image quality can be improved. | 03-15-2012 |
20120127359 | OPTICAL IMAGING SYSTEM - An optical imaging system includes, in order from an object side to an image side, a first lens element with a positive refractive power, a second lens element, a third lens element, a fourth lens element with a positive refractive power having an aspheric surface and a fifth lens element with a negative refractive power. An image-side surface of the fifth lens element is concave, and at least one of two surfaces of the fifth lens element is aspheric. The relationship between a sum of thicknesses of all lens elements with refractive powers on an optical axis and a distance on the optical axis between an object-side surface of the first lens element and the image-side surface of the fifth lens element in the optical imaging system can effectively reduce the total length as well as the sensitivity of the optical imaging system while gaining superior resolution. | 05-24-2012 |
20120127596 | Thin Optical Lens Assembly - This invention discloses a thin optical lens assembly, comprising two lens elements with refractive power arranged from an object side to an image side along an optical axis, a bi-convex first lens element with a positive refractive power, a second lens element with a negative refractive power having a concave object-side surface and a convex image-side surface, and an image sensor on an image plane. Each of the two lens elements has two aspheric optical surfaces, and preferably is made of plastic. Additionally, the thin optical lens assembly satisfies the conditions of the present invention in order to reduce the total length and the sensitivity for its use in compact cameras and mobile phones with photographing functions. | 05-24-2012 |
20120154931 | PHOTOGRAPHING OPTICAL LENS ASSEMBLY - A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element with positive refractive power having a convex object-side surface and a convex image-side surface, and a second lens element with positive refractive power having a concave object-side surface and a convex image-side surface. At least one surface of the first lens element is aspheric and two surfaces of the second lens element are aspheric. The photographing optical lens assembly can also include a stop and an image plane. By adjusting the thicknesses of the first lens element and the second lens element as well as the allocation of the stop in the photographing optical lens assembly can effectively reduce the size as well as the sensitivity of the photographing optical lens assembly while gaining superior resolution. | 06-21-2012 |
20120182627 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 07-19-2012 |
20120188656 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: | 07-26-2012 |
20120229918 | Image Pick-Up Optical System - An image pick-up optical system, in order from an object side to an image side, along an optical axis comprising: the first lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the second lens element with positive refractive power, a bi-convex third lens element with positive refractive power, the fourth lens element with negative refractive power having a concave object-side surface, a plastic fifth lens element with positive refractive power having a convex object-side surface and at least one aspherical optical surface. Additionally, the image pick-up optical system satisfies conditions related to shorten the total length and to enhance the ability of wider field of view for use in compact cameras and mobile phones. | 09-13-2012 |
20130057968 | IMAGE CAPTURING OPTICAL LENS ASSEMBLY - An image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The third lens element with refractive power has a concave object-side surface, wherein the surfaces of the third lens element are aspheric. The fourth lens element has positive refractive power, wherein two surfaces of the fourth lens element are aspheric. The fifth lens element has refractive power, wherein two surfaces of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point formed on at least one surface thereof. | 03-07-2013 |
20130077181 | OPTICAL IMAGE LENS SYSTEM - An optical image lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The third lens element with negative refractive power has a concave image-side surface. The fourth lens element with refractive power has a concave object-side surface and a convex image-side surface, wherein the surfaces of the fourth lens element are aspheric. The fifth lens element with negative refractive power has a concave image-side surface, wherein the surfaces of the fifth lens element are aspheric, and the fifth lens element has inflection points formed on at least one of surface thereof. | 03-28-2013 |
20130114151 | PHOTOGRAPHING SYSTEM - A photographing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element with positive refractive power is made of plastic material and has a convex object-side surface and a convex image-side surface. The fourth lens element with negative refractive power is made of plastic material and has a concave object-side surface and a convex image-side surface. The fifth lens element with refractive power is made of plastic material and has a concave image-side surface, wherein the fifth lens element has at least one inflection point. The object-side surfaces and the image-side surfaces of the third through fifth lens elements are aspheric. | 05-09-2013 |
20130235463 | OPTICAL IMAGE LENS ASSEMBLY - An optical image lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The second lens element with refractive power has a concave object-side surface and a convex image-side surface. The third lens element with refractive power has two surfaces being aspheric. The fourth lens element with positive refractive power has a convex image-side surface, wherein the surfaces of the fourth lens element are aspheric. The fifth lens element with negative refractive power has a concave image-side surface, wherein the surfaces of the fifth lens element are aspheric, and the fifth lens element has inflection points on at least one of the surfaces thereof. | 09-12-2013 |
20130235473 | OPTICAL IMAGE SYSTEM - An optical image system includes, in order from an object side to an image side, the first lens element with positive refractive power having a convex object-side surface; the second lens element with refractive power; the third lens element with positive refractive power having at least one surface being aspheric; the fourth lens element with refractive power having a concave object-side surface and a convex image-side surface, wherein at least one surface thereof element is aspheric; the fifth lens element with positive refractive power having a convex image-side surface; and the sixth lens element with negative refractive power made of plastic material and having a concave image-side surface, wherein at least one surface thereof is aspheric, and the image-side surface thereof changes from concave at a paraxial region to convex at a peripheral region. | 09-12-2013 |
20130279021 | OPTICAL IMAGE LENS SYSTEM - An optical image lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has refractive power. The fifth lens element with positive refractive power has a convex image-side surface, wherein at least one surface of the fifth lens element is aspheric. The sixth lens element with negative refractive power has a concave image-side surface, wherein at least one surface of the sixth lens element is aspheric, and the sixth lens element has at least one inflection point on the image-side surface thereof. | 10-24-2013 |
20140043695 | OPTICAL PHOTOGRAPHING LENS SYSTEM - An optical photographing lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has positive refractive power. The third lens element has negative refractive power. The fourth lens element with refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric. The fifth lens element with positive refractive power has a convex image-side surface, wherein the surfaces thereof are aspheric. The sixth lens element with negative refractive power has a concave image-side surface, wherein the image-side surface changes from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces thereof are aspheric. | 02-13-2014 |
20140085736 | OPTICAL IMAGING SYSTEM - An optical imaging system includes, in order from an object side to an image side, a first lens element with positive refractive power, a second lens element, a third lens element, a fourth lens element, and a fifth lens element. Each of the fourth lens element and the fifth lens element includes at least one aspheric surface. The fourth lens element and the fifth lens element are made of plastic. The fifth lens element includes a concave image-side surface and at least one inflection point. An axial distance is formed between each of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element, and the optical imaging system further comprises a stop. | 03-27-2014 |
20140092487 | PHOTOGRAPHING LENS ASSEMBLY - A photographing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof. The second lens element has negative refractive power. The third lens element has refractive power. The fourth lens element with positive refractive power has an object-side surface being concave at a paraxial region thereof and an image-side surface being convex at a paraxial region thereof. The fifth lens element with negative refractive power has an image-side surface being concave at a paraxial region thereof and being convex at a peripheral region thereof, wherein the fifth lens element is made of plastic material and has at least one surface being aspheric. | 04-03-2014 |
20140198396 | OPTICAL IMAGE CAPTURING LENS ASSEMBLY - An optical image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has negative refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The fifth lens element with refractive power has a concave image-side surface, wherein the fifth lens element has at least one inflection point formed on at least one surface thereof. Both of the object-side surface and the image-side surface of the fourth and fifth lens elements are aspheric. The optical image capturing lens assembly has a total of five lens elements with refractive power. | 07-17-2014 |
20140211327 | OPTICAL IMAGE LENS SYSTEM - An optical image lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has a convex object-side surface, wherein at least one of two surfaces of the fifth lens element is aspheric. The sixth lens element with negative refractive power has a concave image-side surface, wherein at least one of two surfaces of the sixth lens element is aspheric, and the sixth lens element has at least one inflection point on at least one of the surfaces thereof. | 07-31-2014 |
20140247508 | OPTICAL IMAGE LENS SYSTEM - An optical image lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein at least one surface of the fifth lens element is aspheric. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein at least one surface of the sixth lens element is aspheric, and the image-side surface of the sixth lens element has at least one inflection point thereon. | 09-04-2014 |
20140293455 | PHOTOGRAPHING SYSTEM - A photographing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The third lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The fourth lens element with negative refractive power has a concave object-side surface. The object-side surface and an image-side surface of the fourth lens element are aspheric. The fifth lens element with refractive power has a concave image-side surface. An object-side surface and the image-side surface of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point formed on the image-side surface thereof. | 10-02-2014 |
Patent application number | Description | Published |
20090009887 | Inverse Telephoto with Correction Lenses - An inverse telephoto with correction lenses comprises five lens elements with refractive power, from the object side to the image side: a first lens element with negative refractive power having a concave image-side surface; a second lens element with positive refractive power having a convex image-side surface; a third lens element with a convex object-side surface; a fourth lens element with a concave image-side surface; a fifth lens element with positive refractive power having a convex image-side surface, at least one of an object-side surface and the image-side surface of the fifth lens element being aspheric; and an aperture stop located between the first lens element and the second lens element. At least three of the surfaces of the first, second, third, fourth and fifth lens elements are aspheric. | 01-08-2009 |
20090128927 | Optical Lens System for Taking Image - An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface and at least one aspheric surface; a meniscus third lens element with negative refractive power having a convex image-side surface; and a fourth lens element with negative refractive power having a convex object-side surface and an aspheric image-side surface. The above configurations and arrangements of the lens elements can effectively reduce the size of the optical system while improving its resolution. | 05-21-2009 |
20100149659 | Optical Lens System for Taking Image - An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power has a convex object-side surface; a plastic second lens element with negative refractive power has a concave object-side surface and is provided with at least one aspheric surface; a plastic third lens element with negative refractive power has a concave object-side surface and is provided with at least one aspheric surface; a fourth lens element with positive refractive power has a concave image-side surface and is formed with inflection points; and an aperture stop is located between an object to be photographed and the second lens element. An on-axis distance between the first and second lens elements is T | 06-17-2010 |
20100208359 | IMAGING OPTICAL LENS ASSEMBLY - The present invention provides an imaging optical lens assembly including, in order from the object side to the image side: a first lens group comprising a first lens element with positive refractive power, no lens element with refractive power being disposed between the first lens element and an imaged object, the first lens element being the only lens element with refractive power in the first lens group; and a second lens group comprising, in order from the object side to the image side: a second lens element with negative refractive power; a third lens element; and a fourth lens element; wherein focusing adjustment is performed by moving the first lens element along an optical axis, such that as a distance between the imaged object and the imaging optical lens assembly changes from far to near, a distance between the first lens element and an image plane changes from near to far; and wherein the number of the lens elements with refractive power in the imaging optical lens assembly is N, and it satisfies the relation: 4≦N≦5. The abovementioned arrangement of optical elements and focusing adjustment method enable the imaging optical lens assembly to obtain good image quality and consume less power. | 08-19-2010 |
20100284094 | Optical Lens System for Taking Image - An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface and an object-side surface cemented to an image-side surface of the first lens element; a third lens element with negative refractive power; a fourth lens element with positive refractive power having a concave image-side surface and at least one inflection point; and an aperture stop located between an object to be photographed and the third lens element. In the optical lens system for taking image, the number of the lens elements with refractive power being limited to four. A focal length of the optical lens system for taking image is f, a focal length of the first lens element is f | 11-11-2010 |
20100321798 | Optical Lens System for Taking Image - An optical lens system for taking image comprises, in order from the object side to the image side: an aperture stop; a first lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a plastic second lens element with negative refractive power having a concave object-side surface, a convex image-side surface and at least one aspheric surface; a plastic third lens element with negative refractive power having a convex object-side surface, a concave image-side surface and at least one aspheric surface. The number of the lens elements with refractive power being limited to three. Focal lengths of the optical lens system, the first lens element, the second lens element and the third lens element are f, f1, f2, f3 respectively; Abbe numbers of the first and second lens elements are V1, V2 respectively, an on-axis distance between second and third lens elements is T23, and they satisfy the relations: 0.812-23-2010 | |
20120170138 | PHOTOGRAPHING OPTICAL LENS ASSEMBLY - This invention provides a photographing optical lens assembly, from an object side to an image side in order, comprising a first lens element with positive refractive power having a convex object-side surface, a second lens element with negative refractive power having a concave image-side surface, a third lens element with positive refractive power, a fourth lens element with negative refractive power having a concave image-side surface, both the two surfaces of the fourth lens thereof being aspheric. And an aperture stop is positioned between the first element and the second lens element. There are four lens elements with refractive power in the lens assembly. | 07-05-2012 |
20120170139 | PHOTOGRAPHING OPTICAL LENS ASSEMBLY - This invention provides a photographing optical lens assembly, from an object side to an image side in order, comprising a first lens element with positive refractive power having a convex object-side surface, a second lens element with negative refractive power having a concave image-side surface, a third lens element with positive refractive power, a fourth lens element with negative refractive power having a concave image-side surface, both the two surfaces of the fourth lens thereof being aspheric. And an aperture stop is positioned between the first element and the second lens element. There are four lens elements with refractive power in the lens assembly. | 07-05-2012 |
20120176527 | OPTICAL LENS SYSTEM - An optical lens system comprises, in order from an object side to an image side: the first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; the second lens element with positive refractive power; the third lens element with positive refractive power having the object-side surface and the image-side surface being aspheric; the fourth lens element with negative refractive power having a concave image-side surface and at least one aspheric surface. There are four lens elements with refractive power. Such arrangements can enable a larger field of view, reduce the volume of the system, and further obtain higher resolution for the optical lens system of the present invention. | 07-12-2012 |
20120300315 | IMAGE CAPTURING LENS ASSEMBLY - This invention provides an image capturing lens assembly in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens element with negative refractive power having a concave object-side surface; a fourth lens element having a concave object-side surface and a convex image-side surface; and a fifth lens element having a concave image-side surface, the object-side and image-side surfaces thereof being aspheric and at least one inflection point being formed on at least one of the object-side and image-side surfaces thereof. By such arrangement, it can effectively reduce the aberration as well as the total track length of the imaging lens system for obtaining higher image resolution. | 11-29-2012 |
20130021680 | OPTICAL IMAGE CAPTURING LENS SYSTEM - This invention provides an optical image capturing lens system comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element; a third lens element; a fourth lens element; and a fifth lens element with negative refractive power, at least one of the object-side and image-side surfaces thereof being aspheric, and at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof; wherein the system at least has one front stop and one rear stop; which are positioned between an imaged object and the third lens element as well as between the third lens element and the fifth lens element, respectively. By such arrangement, photosensitivity and total track length of the system can be reduced, and the aberration and astigmatism of the system can be effectively corrected. Moreover, the focusing performance thereof can be improved. | 01-24-2013 |
20130215521 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 08-22-2013 |
20130215522 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 08-22-2013 |
20130250439 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 09-26-2013 |
20130258501 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 10-03-2013 |
20130265650 | OPTICAL IMAGING LENS SYSTEM - This invention provides an optical imaging lens system in order from an object side to an image side comprising five non-cemented lens elements with refractive power: a first lens element with positive refractive power having a convex object-side surface; a second lens element with positive refractive power; a third lens element with negative refractive power, and both surfaces being aspheric; a fourth lens element having a convex image-side surface, and both surfaces being aspheric; and a plastic fifth lens element having a concave image-side surface, both surfaces being aspheric, and at least one inflection point is formed on at least one of the surfaces thereof. By such arrangement, the refractive power of the optical imaging lens system can be effectively distributed with improved light converging power so that the total track length can be shortened effectively, and the aberration of system can be corrected to facilitate high image quality. | 10-10-2013 |
20140146215 | IMAGING LENS SYSTEM - An imaging lens system comprises, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with refractive power having object-side and image-side surfaces being aspheric, at least one surface thereof having at least one inflection point; a fourth lens element with refractive power having a concave object-side surface and a convex image-side surface; a fifth lens element with refractive power having an aspheric object-side surface and an aspheric concave image-side surface, the image-side surface thereof having at least one inflection point. | 05-29-2014 |
20140185151 | IMAGE CAPTURING LENS SYSTEM - An image capturing lens system includes four lens elements with refractive power, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The positive first lens element has a convex object-side surface at a paraxial region. The negative second lens element has a concave object-side surface at a paraxial region and an image-side surface changing from concave at a paraxial region to convex at a peripheral region, wherein the surfaces of the second lens element are aspheric. The positive third lens element has a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region. The negative fourth lens element has an image-side surface changing from concave at a paraxial region to convex at a peripheral region, and the surfaces of the fourth lens element are aspheric. | 07-03-2014 |
20150022700 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 01-22-2015 |
20150022701 | IMAGING LENS SYSTEM - This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. | 01-22-2015 |