Class / Patent application number | Description | Number of patent applications / Date published |
359739000 | Diaphragm | 66 |
20080285158 | Objective lens and optical measuring device - An objective lens used for a microscope includes a lens(es), an iris diaphragm and a tubular body. The lens(es),which is provided in a manner facing an object, transmits light reflected from a measuring surface of the object. The iris diaphragm, which is provided behind the lens(es), changes an aperture diameter of a light-transmissive aperture of a light-transmissive surface that is substantially orthogonal to a main optical axis of the light transmitted through the lens(es). The tubular body, which is detachably mounted on a revolving nosepiece of a trunk that includes a zoom imaging lens(es) for forming an image from the light transmitted through the light-transmissive aperture, holds the lens(es) and the iris diaphragm. | 11-20-2008 |
20090073578 | INCIDENT-LIGHT CONTROLLING APPARATUS - An incident-light controlling apparatus has a first aperture | 03-19-2009 |
20090097136 | OPTICAL DEVICE AND IMAGE PICKUP APPARATUS USING THE SAME OPTICAL DEVICE - An optical device including a lens group which generates an optical image on an image pickup area by focusing an image of a photographing object, an optical diaphragm which narrows light flux optically when the optical portion generates the optical image, an ND filter group which is disposed in front of or behind the optical diaphragm and constituted of a plurality of ND filters each having a different light transmittance, and an ND filter adjusting portion which adjusts a positional relation of the ND filter with respect to the optical axis of the optical portion. At least one of the plural ND filters is an oblique ND filter in which the transmittance change line which is a change line of the light transmittance intersects at least two sides constituting the image pickup area obliquely. | 04-16-2009 |
20090303617 | APERTURE STOP AND MANUFACTURING METHOD THEREOF - An aperture stop includes a body and a black film. The body is stainless steel and the black film is disposed on at least two corresponding ends of the body. A manufacturing method of the aperture stop is also provided. The aperture stop is produced using the characteristics of the stainless steel body. | 12-10-2009 |
20100014172 | Lens barrel and imaging apparatus - A lens barrel includes: a barrel body; a diaphragm pivotally held in the barrel body; a diaphragm operating member that changes the diameter of the diaphragm; an operation arm that can pivot in the barrel body and fits in the diaphragm operating member, the operation arm, when pivoted, changing the diameter of the diaphragm via the diaphragm operating member; and a light-blocking plate that prevents unwanted light from entering the barrel body and has a passage portion through which the operation arm passes and an engagement portion that an engaging piece protruding from the diaphragm operating member engages, the light-blocking plate, along with the diaphragm operating member, pivotally supported, wherein the passage portion has an opening having a width that is substantially the same as the width of the operation arm. | 01-21-2010 |
20100046094 | IMAGING LENS AND IMAGING APPARATUS - Disclosed is an imaging lens having a small F number, a wide angle of view, and a low manufacturing cost and capable of obtaining a high-quality image. | 02-25-2010 |
20100103536 | Imaging lens - It is to provide an imaging lens that can improve optical performance while reducing size and weight. | 04-29-2010 |
20100110566 | Imaging lens - It is to provide an imaging lens that can improve optical performance while reducing size and weight. | 05-06-2010 |
20100208365 | LENS BARREL - A barrier unit which can be easily assembled to a lens holding member in view of the above problems. The direction in which a barrier unit is rotated when the barrier unit is assembled with a lens holding member coincides with the direction in which a barrier blade driving member is rotated when the barrier blade is closed from the open state. | 08-19-2010 |
20110038062 | OPTICAL LENS - The present invention relates to the field of laser machining and provides an optical lens, comprising a lens group and a diaphragm. The diaphragm is located in front of the lens group. The lens group comprises three lenses, respectively the first, the second and the third lens, which are sequentially arranged as a “negative-positive-positive” separated focal power system, wherein the first lens is a negative meniscus lens, the second lens is a positive meniscus lens, the third lens is a positive meniscus lens, all the curved surfaces of the first lens, the second lens and the third lens are bent in the direction towards the diaphragm, and the focal length of the entire optical system is f, the focal lengths of the first, the second and the third lens are respectively f | 02-17-2011 |
20110043931 | OPTICAL LENS - The present invention relates to the field of laser machining and provides an optical lens, comprising a lens group and a diaphragm which is located in front of the lens group. The lens group comprises three lenses, respectively the first, the second and the third lens, which are sequentially arranged as a “negative-positive-positive” separated focal power system, wherein the first lens is a negative meniscus lens, the second lens is a positive meniscus lens, the third lens is a plano-convex or positive meniscus lens. All the curved surfaces of the first lens and the second lens are bent in the direction towards the diaphragm, and the focal length of the entire optical system is f, the focal lengths of the first, the second and the third lens are respectively f | 02-24-2011 |
20110273785 | LENS BARREL - A first tilt unit that is to abut a first tilt receiving unit of a rotating member is provided at a peripheral portion of a first lens frame. A second lens frame moves in a direction parallel to the optical axis, integrally with an adjustable diaphragm by a protrusion passing through a coil-shaped optical-axis biased spring and a hole provided in a base member. On a side surface of a linear-guidance ring, a guide groove is formed to engage with a lug of the second lens frame and slide the second lens frame in a direction parallel to the optical axis in the linear-guidance ring. Further, on an inner surface of the linear-guidance ring, a second tilt unit that is to abut a second tilt receiving unit of the rotating member is provided. | 11-10-2011 |
20130286489 | LENS APPARATUS AND IMAGE CAPTURING APPARATUS INCLUDING THE SAME - A lens apparatus includes a diaphragm unit that is driven in a first driving direction and a second driving direction, a driving unit that drives the diaphragm unit based on a driving instruction, a storage unit that stores a first driving instruction value for performing the driving in the first driving direction, and a second driving instruction value for performing the driving in the second driving direction, and a control unit that outputs a driving instruction for driving the diaphragm unit, wherein the control unit outputs, when driving the diaphragm unit in the first driving direction, the driving instruction based on the first driving instruction value or the like, and outputs, when driving the diaphragm unit in the second driving direction, the driving instruction based on the second driving instruction value or the like. | 10-31-2013 |
20130301146 | LENS APPARATUS - A lens apparatus includes a lens housing, driven member that is driven in a first direction. A lens barrel body that includes a lens, is separated from the driven member upon receiving an impact including a component of a second direction and can move. A drive section drives the driven member in the first direction. When the lens housing receives an impact including a component of the first direction, the drive member and the driven member are separated apart, and the driven member and the lens barrel body move together in the first direction, and when the lens housing receives an impact including the component of the second direction, the drive member prevents the driven member from moving in the second direction, the driven member and the lens barrel body are separated apart, and the lens barrel body moves. | 11-14-2013 |
20140118850 | IMAGING LENS HAVING FIVE LENS ELEMENTS AND ELECTRONIC APPARATUS HAVING THE SAME - An optical imaging lens includes, from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element has a positive refracting power, its object-side surface has a convex portion in a vicinity of an optical axis, and its image-side surface has a concave portion in the vicinity of the optical axis. The second lens element has a negative refracting power, and its image-side surface is concave. The fourth lens element has a convex image-side surface. The object-side surface of the fifth lens element has a convex portion in the vicinity of the optical axis, and the image-side surface of the fifth lens element has a concave portion in the vicinity of the optical axis. | 05-01-2014 |
20140118851 | IMAGING LENS HAVING FIVE LENS ELEMENTS AND ELECTRONIC APPARATUS HAVING THE SAME - An optical imaging lens includes, from an object side to an image side, an aperture stop, first, second, third, fourth, and fifth lens elements. The first lens element has a positive refracting power, and its object-side surface has a convex portion near an optical axis and a convex portion near its periphery. The second lens element has a negative refracting power. The third lens element has a negative refracting power, and its object-side surface has a concave portion near its periphery. The fourth lens element has a positive refracting power, an object-side surface having a concave portion near the optical axis and a concave portion near its periphery, and an image-side surface having a convex portion near the optical axis and a convex portion near its periphery. The image-side surface of the fifth lens element has a concave portion near the optical axis and a convex portion near its periphery. | 05-01-2014 |
20140126068 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens provided with a negative first lens group and a positive second lens group arranged in order from the object side. The first lens group is composed of a first group first lens which is a negative single lens, and the second lens group is composed of a positive second group first lens, a positive second group second lens, and a negative second group third lens arranged in order from the object side. The second group first lens is a biconvex lens, the second group second lens is a biconvex lens, the second group third lens is a meniscus lens, an aperture stop is disposed between the second group first and second lenses, and the second group second and third lenses form a cemented lens. The imaging lens satisfies conditional expressions (1): −0.89≦f1/f<0 and (4): 0.305-08-2014 | |
20140126069 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens provided with a negative lens group and a positive second lens group disposed in order from the object side. The first lens group is composed of a first group first lens which is a negative single lens, and the second lens group is composed of a positive second group first lens, a positive second group second lens, and a negative second group third lens disposed in order from the object side in which an aperture stop is disposed in the second lens group or the first group first lens has a biconcave shape and an aperture stop is disposed between the second group first lens and the second group second lens. | 05-08-2014 |
20140313600 | LENS DEVICE AND IMAGING DEVICE MOUNTED WITH THE LENS DEVICE - A lens device for an imaging device having a imaging-lens and an aperture stop device that adjusts an aperture-area, the lens device including: a lens barrel that houses the imaging-lens and the aperture stop device; a first operation ring that is provided on an outer circumferential portion of the lens barrel at a desired position and is provided to be rotatable in a circumferential direction of the outer circumferential portion about an axis line of the lens barrel as a rotation axis in order to adjust the aperture-area of the aperture stop device; a second operation ring that is provided in parallel with the first operation ring and provided to be rotatable in the circumferential direction of the outer circumferential portion about the axis line of the lens barrel as the rotation axis in order to adjust a transmittance of a variable light transmission filter; and a mechanism section. | 10-23-2014 |
20160062071 | LENS BARREL, OPTICAL APPARATUS, AND METHOD OF MANUFACTURING THE LENS BARREL - A lens barrel includes a first lens holder | 03-03-2016 |
20180024319 | Optical Image Capturing System | 01-25-2018 |
359740000 | Between lens components | 45 |
20080204899 | Imaging lens and imaging device including the imaging lens - It is to provide an imaging lens and an imaging device including the imaging lens that can maintain optical performance and achieve size and weight reduction. | 08-28-2008 |
20080204900 | THREE-CHANNEL CAMERA SYSTEMS WITH NON-COLLINEAR APERTURES - A three-dimensional imaging system uses a single primary optical lens along with three non-collinear apertures to obtain three offset optical channels each of which can be separately captured with an optical sensor. | 08-28-2008 |
20100027135 | Lens assembly - A lens assembly comprises a lens group M and a lens frame | 02-04-2010 |
20100149663 | LARGE CALIBER STANDARD LENS - A large caliber standard lens having a first lens of a positive refractive power; a second lens of a negative refractive power; a diaphragm; a third lens of a negative refractive power; a fourth lens of a positive refractive power; and a fifth lens of a positive refractive power, wherein the lenses are arranged sequentially from an object side to an image side, and the first lens, the second lens, the third lens, and the fourth lens are meniscus lenses having concave surfaces facing the diaphragm and satisfy the following inequality, | 06-17-2010 |
20100165488 | LENS BARREL AND IMAGING APPARATUS - When the lens barrel is in the storage state, a part of a lens group and a group cylinder are inserted into an aperture of a diaphragm unit and a shutter blade of a shutter unit is closed for light shielding. With this arrangement, the cylinder length in the storage state is shortened, and the performance degradation of an image sensor and optical components provided on a front side of an image sensor can be prevented as well. | 07-01-2010 |
20110069400 | Objective Lens Design For Miniature Endoscope - An endoscope objective lens system design is disclosed, generally comprising a first lens group having overall negative refractive power, a second lens group having overall positive refractive power, and an aperture diaphragm disposed between the first and second lens groups wherein the first lens group includes a plano-concave lens with its concave surface facing the objective end of the endoscope. | 03-24-2011 |
20110157724 | OPTICAL UNIT AND IMAGE PICKUP APPARATUS - An optical unit includes a first lens, a second lens, a diaphragm, a third lens, a fourth lens, and a fifth lens, which are arranged in the stated order from an object side to an image plane side. The second lens has a convex shape. The third lens has a meniscus shape. The fourth lens has a convex shape. The fifth lens has a negative power. | 06-30-2011 |
20110157725 | OPTICAL UNIT AND IMAGE PICKUP APPARATUS - An optical unit includes a first lens, a diaphragm, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens is a positive meniscus lens which is convex toward an object side. The second lens has a positive power. The third lens has a negative power. The fourth lens has a positive power. The fifth lens has a negative power. Those are arranged in the stated order from the object side to an image plane side. | 06-30-2011 |
20120262805 | Image Pickup Lens Unit - Image pickup lens unit ( | 10-18-2012 |
20130021681 | LENS MODULE WITH SPACER - A lens module includes a lens barrel, a first lens, a second lens, and a spacer. The lens barrel includes an object-side end and an image-side end opposite to the object-side end. The first lens is received in the lens barrel, and adjacent to the object-side end. The second lens is received in the lens barrel, and adjacent to the image-side end in relative to the first lens. The spacer is an annular plate, and includes an object-side surface, an image-side surface opposite to the object-side surface, and an inner sidewall. The spacer is positioned between the first lens and the second lens. The object-side surface faces the first lens, and the image-side surface faces the second lens. The intersection of the object-side surface and the inner sidewall forms a chamfer. | 01-24-2013 |
20130279026 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes negative first lens having a concave image-side surface, positive second lens having a convex object-side surface in a paraxial region, an aperture stop, and positive third lens having a convex image-side surface in the paraxial region, which are arranged in this order from an object side. The Abbe numbers of materials constituting the first lens and the third lens for d-line are greater than or equal to 40. The Abbe number of a material constituting the second lens for d-line is less than or equal to 40. When the focal length of an entire system is f, and the center thickness of the second lens is D | 10-24-2013 |
20130321936 | IMAGING LENS, CAMERA, AND PORTABLE INFORMATION TERMINAL DEVICE - An imaging lens, includes: in order from an object side to an image side, a first negative lens group including a negative lens a concave surface of which faces the image side; a second positive lens group including a negative lens a concave surface of which faces the object side, and a positive lens, or a cemented lens entirely having a positive refractive power in order from the object side to the image side; an aperture; a third positive lens group including a cemented lens of a biconvex lens and a biconcave lens from the object side; and a fourth lens group having a weakest refractive power among all of the lens groups and including a single lens, or a cemented lens, a surface on the object side of which is concave and a surface on the image side of which is convex. | 12-05-2013 |
20140002910 | MODIFIED RETROFOCUS-TYPE WIDE-ANGLE LENS | 01-02-2014 |
20140022650 | OPTICAL UNIT - The present invention relates to optical unit comprising, seen in the direction from the object side to the imaging surface, a first substrate, a first lens, a second lens and a second substrate, characterised in that the distance [(vertex first lens) and (vertex second lens)] is 250-650 pm. Such an optical unit is used, inter alia, in image processing units, such as cameras. It is an object of the present invention to provide an optical unit in which the desired dimensional precision of the lens system can be accomplished without this leading to an undesirable increase of the optical unit's dimensions. | 01-23-2014 |
20140063624 | IMAGING OPTICAL SYSTEM, AND IMAGING APPARATUS INCORPORATING THE SAME - An imaging optical system including, from the object side to the image side, a first lens group having positive refracting power, an aperture stop, and a second lens group having positive power, in which the first lens group consists of three lens subgroups, having positive, negative and positive refracting powers, respectively, from the object side to the image side, with satisfaction of the following: | 03-06-2014 |
20140063625 | Lens Assembly and Optical System Including the Same - Provided are a lens assembly and an optical system including the same. The lens assembly may include a first lens having a groove region, a second lens having an insertion region that is inserted into the groove region, and a light blocking member between the first lens and the second lens. The light blocking member may be disposed between a first surface portion of the first lens and a second surface portion of the second lens, and the light blocking member may be separated from at least one of the first surface portion and the second surface portion. The lens assembly may further include at least one additional lens. The lens assembly may be applied to various optical systems. | 03-06-2014 |
20140098429 | Endoscopic Objective Optical System - The diameter of an endoscope insertion portion is reduced, and a wide field angle of an endoscope insertion portion is obtained. An endoscope objective optical system includes, from an object side, a first lens formed of a plano-concave lens having a concave surface facing an image side, a second lens formed of a plano-concave lens having a concave surface facing the object side, an aperture stop, and a third lens formed of a plano-convex lens having a plane surface facing the object side, and satisfies | 04-10-2014 |
20140126070 | Wide-angle Lenses with reduced ghost reflections - Low ghosting wide-angle lens designs are presented. The dimensions and materials are selected such that the lens has a field of view of at least 145 degrees, f# of 2.2-2.9 and all secondary images of an object imaged on the image plane are focused such that they fall either outside of the image plane thus having a relative intensity that is less than 10 | 05-08-2014 |
20140126071 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens provided with a negative first lens group and a positive second lens group arranged in order from the object side. The first lens group is composed of a first group first lens which is a biconcave negative single lens, and the second lens group is composed of a positive second group first lens, an aperture stop, a positive second group second lens, and a negative second group third lens arranged in order from the object side, in which the second group second lens and the second group third lens are cemented together to form a cemented lens. When f1 and f2 are taken as the focal lengths of the first group first lens and the second group first lens respectively, the imaging lens satisfies a conditional expression (4 | 05-08-2014 |
20140146402 | IMAGING LENS UNIT - Disclosed herein is an imaging lens unit, including: a first lens having a positive (+) power; a second lens having a negative (−) power; a third lens having power; a fourth lens having a negative (−) power; and a fifth lens having a negative (−) power, wherein the first lens, the second lens, the third lens, the fourth lens, and fifth lens are arranged in order from an object to be formed as an image, and the fourth lens is convex toward an image side. | 05-29-2014 |
20140146403 | IMAGING LENS, AND IMAGING APPARATUS INCLUDING THE IMAGING LENS - An imaging lens substantially consists of a negative first lens group and a positive second lens group in this order from the object side. The first lens group substantially consists of merely a first lens, which is one negative lens. The second lens group substantially consists of, in the following order from the object side: a cemented lens, which is formed by bonding a positive lens, and a negative lens, in this order from the object side, and which has a positive refractive power as a whole; an aperture stop; a positive lens; and a negative lens. The imaging lens is configured to satisfy the conditional expression (1a): −2.305-29-2014 | |
20140146404 | IMAGING LENS, AND IMAGING APPARATUS INCLUDING THE IMAGING LENS - An imaging lens substantially consists of a negative first lens group and a positive second lens group in this order from the object side. The first lens group substantially consists of only a first lens, which is one biconcave lens. The second lens group substantially consists of, in the following order from the object side: a cemented lens, which is formed by bonding a second lens, i.e., a biconvex lens, and a third lens, i.e., a negative meniscus lens, in this order from the object side, and which has a positive refractive power as a whole; an aperture stop; and a cemented lens that is formed by bonding a fourth lens, i.e., a biconvex lens and a fifth lens, i.e., a negative meniscus lens in this order from the object side and that has a positive refractive power as a whole. | 05-29-2014 |
20140146405 | IMAGING LENS, AND IMAGING APPARATUS INCLUDING THE IMAGING LENS - An imaging lens substantially consists of a negative first lens group and a positive second lens group in this order from the object side. The first lens group substantially consists of only a first lens, which is one biconcave lens. The second lens group substantially consists of, in the following order from the object side: a cemented lens, which is formed by bonding a positive lens and a negative lens, in this order from the object side, and which has a positive refractive power as a whole; an aperture stop; a positive lens; and a negative lens. The imaging lens is configured to satisfy the conditional expressions (1a): 005-29-2014 | |
20140160582 | IMAGING LENS - An imaging lens includes a first lens group having negative refractive power; a stop; and a second lens group having positive refractive power, arranged in the order from the object side to the image plane side. The first lens group includes a first lens having a strong concave surface facing the image plane side and negative refractive power; and a second lens having negative refractive power and a biconcave lens shape near the optical axis. The second lens group includes a third lens having a biconvex shape; and a lens group that is composed of a lens having positive refractive power and a lens having negative refractive power, and has negative refractive power as a whole. The first lens group has a focal length F1 and the second lens group has a focal length F2 so that the following conditional expression is satisfied: | 06-12-2014 |
20140307337 | IMAGING LENS AND IMAGING APPARATUS - An imaging-lens substantially consists of a first-lens-group, a stop and a second-lens-group in this order from object-side. The first-lens-group substantially consists of three or less lenses including a negative-lens having meniscus-shape with convex-surface facing object-side and a positive-lens cemented on the negative-lens in this order from object-side. The second-lens-group substantially consists of a 21st-lens-group substantially consisting of a 21-1st-lens and a 21-2nd-lens and a 22nd-lens-group substantially consisting of a positive-lens. The 21-1st-lens is a positive-lens, an image-side-lens-surface of which has convex-shape facing image-side, and the absolute-value of a curvature-radius of the image-side-lens-surface of which is less than the absolute-value of a curvature-radius of an object-side-lens-surface thereof. The 21-2nd-lens is a negative-lens, an object-side-lens-surface of which has concave-shape facing object-side, and the absolute-value of a curvature-radius of the object-side-lens-surface of which is less than the absolute-value of a curvature-radius of an image-side-lens-surface thereof. A conditional-formula about optical-total-length and maximum-image-height is satisfied. | 10-16-2014 |
20140334020 | SUPER WIDE ANGLE LENS AND IMAGING APPARATUS - This super-wide lens substantially consists of a positive first lens group, a positive second lens group, and a negative third lens group, in this order from the object side. The first lens group and the third lens group are fixed and the second lens group moves toward the object side while focusing from an object at infinity to an object at the closest distance. The first lens group substantially consists of a negative first sub lens group, a positive second sub lens group, an aperture stop, and a positive third sub lens group in this order from the object side. Conditional expressions (1) and (2) are satisfied: | 11-13-2014 |
20140362455 | IMAGING LENS AND IMAGING APPARATUS INCLUDING THE SAME - The imaging lens substantially consists of a front group having positive refractive power, an aperture stop, a rear group having positive refractive power in this order from the object side. The front group substantially consists of a lens having a negative meniscus shape with a convex surface toward the object side, a negative lens, and a positive lens in this order from the object side. The rear group substantially consists of a positive lens, a negative lens, a positive lens, and a positive lens in this order from the object side. In the case that the Abbe numbers with respect to the d-line of the first lens and the second lens from the object side in the front group are respectively ν1 and ν2, conditional expressions (1) and (2) below are satisfied: | 12-11-2014 |
20140368931 | IMAGING LENS AND IMAGING APPARATUS EQUIPPED WITH THE IMAGING LENS - An imaging lens substantially includes six lenses, constituted by: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, a concave surface toward an image side, and at least one inflection point in the surface toward the image side; provided in this order from an object side. The imaging lens satisfies a predetermined conditional formula. | 12-18-2014 |
20150022905 | IMAGING LENS AND IMAGING APPARATUS EQUIPPED WITH THE IMAGING LENS - An imaging lens substantially includes six lenses, constituted by: a first lens having a negative refractive power, which is of a meniscus shape having a concave surface toward an image side; a second lens; a third lens; a fourth lens; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, a concave surface toward the image side, and at least one inflection point in the surface toward the image side; provided in this order from an object side. The imaging lens satisfies a predetermined conditional formula. | 01-22-2015 |
20150062726 | IMAGING LENS AND IMAGING APPARATUS INCLUDING THE SAME - The imaging lens substantially consists of a first lens having a biconvex shape, a second lens having a negative refractive power, a third lens having a negative refractive power and a convex surface that faces the object side, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power, of which at least one of the object-side surface and the image-side surface has at least one inflection point, in this order from the object side; and wherein conditional expression (1A): −0.3803-05-2015 | |
20150070787 | IMAGING LENS AND IMAGING DEVICE PROVIDED WITH THE SAME - An imaging lens substantially consists of five lenses consisting of, in order from the object side: a first lens having a positive refractive power with a convex surface toward the object side; a second lens having a negative refractive power and having a meniscus shape with a convex surface toward the image side; a third lens having a positive refractive power and having a meniscus shape with a convex surface toward the image side; a fourth lens having a positive refractive power and having a meniscus shape with a convex surface toward the image side; and a fifth lens having a negative refractive power, wherein an image-side surface of the fifth lens includes a concave surface and at least one inflection point, wherein a predetermined conditional expression is satisfied. | 03-12-2015 |
20150309289 | Wide-Angle Objective Optical System - Excellent aberration correction, suitability for high-definition and high-pixel solid state imaging elements, a small outer diameter of an end and reduction in manufacturing cost are achieved. | 10-29-2015 |
20150346462 | OPTICAL IMAGING SYSTEM - Provided is a wide angle optical imaging system composed of four lenses, the wide angle optical imaging system allowing various types of aberrations including chromatic aberration of magnification to be sufficiently reduced. The wide angle optical imaging system includes the following arranged from the object side to the image plane side: a first lens that is a negative meniscus lens having a convex surface on the object side; a second lens that is negative; a third lens that is positive; an aperture stop; and a fourth lens that is positive, wherein the following expressions are satisfied, where v2, v3, and v4 represent Abbe numbers of materials that form the second to fourth lenses with respect to a d-line, respectively, f2 and f3 represent focal distances of the second and third lenses, respectively, and f represents a focal distance of the whole optical system: v2>35 (1) v3<45 (2) v4>35 (3) v2−v3≧10 (4) v4−v3≧10 (5) −2.3≦f2/f≦−1.5 (6) 3.0≦f3/f≦4.0 (7) | 12-03-2015 |
20160004064 | ENDOSCOPE OBJECTIVE LENS AND ENDOSCOPE - An endoscope objective lens consists essentially of, in order from the object side, a negative first lens group, a stop, and a positive second lens group. At least one of the first lens group and the second lens includes only one cemented lens which is formed by a positive lens and a negative lens cemented together. The entire system includes a positive single lens. The endoscope objective lens satisfies given condition expressions relating to the focal length of the entire system, the center thickness of the positive single lens, the center thickness of the cemented lens, the distance from the most object-side lens surface to the stop, and the distance from the stop to the most image-side lens surface. | 01-07-2016 |
20160011403 | IMAGING LENS AND IMAGING APPARATUS | 01-14-2016 |
20160077308 | IMAGE FORMING LENS AND IMAGE CAPTURING DEVICE - An image forming lens is formed by sequentially arranging, from an object side to an image side, a first lens group having positive power, an aperture stop, a second lens group having positive power, and a third lens group having positive power. The image forming lens satisfies following conditional expressions: | 03-17-2016 |
20160077309 | IMAGE FORMING LENS AND IMAGE CAPTURING DEVICE - An image forming lens is formed by sequentially arranging, from an object side to an image side, a first lens group having positive refractive power, an aperture stop, a second lens group having positive refractive power, and a third lens group having positive or negative refractive power. When focusing is performed from a long distance to a short distance, the third lens group is fixed relative to an image surface, and the first lens group, the aperture stop, and the second lens group are moved integrally to the object side. In the image forming lens, the third lens group is formed by sequentially arranging, from the object side to the image side, two lenses in order of a negative lens and a positive lens, and a conditional expression is satisfied: | 03-17-2016 |
20160116707 | OPTICAL IMAGING LENS AND ELETRONIC DEVICE COMPRISING THE SAME - An optical imaging lens includes a first, second, third and fourth lens element, and an aperture stop positioned between the second and third lens elements. The first lens element has an object-side surface with a convex portion in a vicinity of its periphery, the second lens element has an image-side surface with a concave portion in a vicinity of the optical axis, the third lens element has an image-side surface with a convex portion in a vicinity of the optical axis, the fourth lens element is made of plastic and has an object-side surface with a concave portion in a vicinity of the optical axis, and the optical imaging lens set does not include any lens element with refractive power other than said first, second, third and fourth lens elements. | 04-28-2016 |
20160131878 | FIXED FOCAL-LENGTH LENS SYSTEM - A fixed focal-length lens system includes a negative first lens group, a positive second and third lens groups. The first and second lens groups move toward the object side during focusing from an object at infinity to an object at a close-up distance. The first lens group includes a negative lens element having a concave surface on the image side, at least two positive lens elements, and a negative lens element having a concave surface on the image side. The second lens group includes a negative lens element having a concave surface on the object side, and at least two positive lens elements. The third lens group includes at least one negative lens element, and at least one positive lens element. The following condition (1) is satisfied: | 05-12-2016 |
20160147041 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens is substantially constituted by: a negative first lens group; a positive second lens group; an aperture stop; a positive third lens group; and a negative fourth lens group; provided in this order from an object side. The first lens group is constituted only by two or more negative lenses. The second lens group has a positive lens at the most object side thereof. The third lens group has a negative lens having a concave surface toward the object side at the most object side thereof. The fourth lens group is constituted by a single negative lens. The fourth lens group moves from the object side to an image side when changing focus from an object at infinity to an object at an extremely close distance. Only the fourth lens group moves during focusing operations. | 05-26-2016 |
20160147042 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes, in order from the object side: a positive first lens group; a stop; a positive second lens group; and a negative third lens group. The first lens group includes, in order from the object side, at least one positive single lens, at least one cemented lens, at least one negative single lens, and a negative meniscus single lens. The second lens group includes, in order from the object side, a cemented lens and a biconvex lens. The third lens group includes, in order from the object side, a negative meniscus lens, at least one negative lens, and at least one positive lens. Focusing from infinity to a close distance is performed by moving the first lens group, the stop, and the second lens group while the third lens group is fixed with respect to an imaging surface. | 05-26-2016 |
20160161706 | OPTICAL LENS SYSTEM - An optical lens system includes a first lens element of negative refractive power having a meniscus shape, a second lens element of positive refractive power having a convex image-side surface and disposed adjacent to the first lens element, a third lens element of positive refractive power having at least one aspheric surface and disposed adjacent to the second lens element, and a fourth lens element of negative refractive power having at least one aspheric surface and disposed adjacent to the third lens element. | 06-09-2016 |
20160195691 | IMAGING OPTICAL SYSTEM | 07-07-2016 |
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20180024310 | Image Lens | 01-25-2018 |