Entries |
Document | Title | Date |
20090052058 | OPTICAL ELEMENT MOLDING METHOD AND OPTICAL ELEMENT - An optical element is molded by placing at least two glass materials between a pair of molding dies having optical-function transfer surfaces, a total volume of the two glass materials being same as that of the optical element, the two glass materials being made of a same material and being formed to individually come in contact with centers of the optical-function transfer surfaces when they are pressed; and by heating and pressing the glass materials using the pair of molding dies. Thereby, closed spaces are not formed between the optical-function transfer surfaces and the glass materials coming in contact with the centers of the optical-function transfer surfaces. Therefore, it is possible to reduce a load of the molding process while preventing an appearance defect of the optical element by applying just a single cycle of a placing process, a transferring (heating and pressing) process and a cooling process. | 02-26-2009 |
20090316279 | Emitting and focusing apparatus, methods, and systems - Apparatus, methods, and systems provide emitting, field-adjusting, and focusing of electromagnetic energy. In some approaches the field-adjusting includes providing an extended depth of field greater than a nominal depth of field. In some approaches the field-adjusting includes field-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial. | 12-24-2009 |
20100296178 | MINIATURIZED OPTICAL HEAD WITH HIGH SPATIAL RESOLUTION AND HIGH SENSITIVITY, ESPECIALLY FOR FIBRED CONFOCAL FLUORESCENCE IMAGING - A miniaturized optical head provided to equip the distal end of a beam of flexible optical fibres scanned by a laser beam, is designed to come in contact with a sample and to excite the sample confocally. This optical head includes elements for correcting spherical aberrations and focusing members. The focusing members include: at least a first lens (L | 11-25-2010 |
20100296179 | OPTICS FOR AN EXTENDED DEPTH OF FIELD - An optical imaging assembly having cylindrical symmetry, comprising a plurality of lenses having surfaces with curvatures and spacings between the surfaces, such that an optical image formed by the plurality of lenses has a defocus aberration coefficient greater than 0.1 at a focal plane of the assembly. | 11-25-2010 |
20110090576 | OPTICAL SYSTEM AND OPTICAL APPARATUS HAVING THE SAME - An zoom lens includes a front unit having positive refractive power, an aperture stop, and a rear unit. The front unit has a positive lens Gp | 04-21-2011 |
20110199693 | Method and Apparatus for Scaled Up Reproduction of Detailed Features - Producing a scaled multiple parallax compound lens is accomplished by providing an insect eye having multiple ommitidia and creating a polymer mold of the insect eye. A casting is then created from the polymer mold with an expandable polymer which is then linearly expanded to provide a form for creating a second polymer mold. A second casting is then created from the second polymer mold. Duplication of the process can be accomplished for further scaling up of the compound lens with the final casting created using a durable polymer having appropriate optical properties for the lens. | 08-18-2011 |
20110299179 | OPTICAL SYSTEM AND OPTICAL APPARATUS INCLUDING THE OPTICAL SYSTEM - An optical system includes, in order from an object side to an image side, a first lens unit having a positive refractive power, an aperture stop, and a rear lens group. In the optical system, the rear lens group includes a second lens unit configured to move during focusing. The first lens unit includes n positive lenses (n is an integer greater than 1) and one or more negative lenses. With an order of an optical member counted from the object side towards the image side being indicated by i (i is an integer equal to or greater than 1), a refractive index and an Abbe number of a material of an i-th positive lens of the first lens unit with respect to d-line light (Ndi, νdi), maximum and minimum values of the Abbe number νdi (max(νdi), min(νdi)), a minimum value of the refractive index Ndi (min(Ndi)), a focal length of the first lens unit (fp), and a focal length of the entire optical system (f) are appropriately set. | 12-08-2011 |
20120229919 | MICRO-LENS MODULE - A micro-lens module including a plurality of lens groups is provided. The lens groups are disposed between an object side and an image side, wherein at least one lens group in the lens groups is composed by a complex lens. The complex lens includes a plurality of lenses, the lenses are adhered to each other, and an index of at least one lens in the lenses is different from indexes of the other lens in the lenses. The provided micro-lens module has an improved imaging quality and a miniaturized size while considering a manufacturing convenience. | 09-13-2012 |
20120293878 | Imaging Lens Unit and Production Method Therefore - Disclosed is an imaging lens unit that prevents the detachment of a cover from a holder. The imaging lens unit ( | 11-22-2012 |
20130215523 | Optical System for Endoscope - An optical system for an endoscope includes a negative lens-group, an aperture diaphragm and a positive lens-group in this order from an object side, wherein the negative lens-group includes a negative first-lens and a negative second-lens in this order from the object side; and wherein the optical system meets conditional expressions (1) and (2): | 08-22-2013 |
20140078605 | IMAGING LENS, IMAGING APPARATUS, AND INFORMATION DEVICE - An imaging lens includes a plurality of lenses, wherein a surface on an image side of a lens on an object side and a surface on the object side of a lens on the image side of two lenses arranged adjacently and separately from each other face each other across an air space, the air space is termed an air lens, a shape of the air lens is defined such that the surface on the image side of the lens on the object side is taken as a surface on the object side of the air lens and the surface on the object side of the lens on the image side is taken as a surface on the image side of the air lens, and an air lens positioned on a most object side and an air lens positioned on a most image side each have a biconvex shape. | 03-20-2014 |
20140092490 | LENS SYSTEM, OPTICAL DEVICE WITH LENS SYSTEM, AND METHOD OF MANUFACTURING LENS - A lens system comprises, on a side closest to an object, a first lens component having a positive refractive power and a second lens component having a positive refractive power in order from the object; and on a side closest to an image, a cemented lens constructed by cementing together a positive lens and a negative lens in order from the object; wherein the lens system satisfies the following conditional expressions: | 04-03-2014 |
20140111875 | METHOD FOR MAKING PAIRED LENSES WITH AN OPAQUE BARRIER BETWEEN, AND PRODUCT MADE - A method comprises depositing an optical filter layer on a glass wafer, then cutting the wafer into dice. The dice are positioned on a carrier and encapsulated in a molding compound to form a reconstituted wafer, and the wafer is back-ground and polished. Lens faces are positioned on opposing surfaces of the glass dice and spacers are positioned on one side of the wafer. The wafer is then cut into lens modules, each having two side-by-side lenses with an opaque molding compound barrier between. The individual modules are attached to devices that require dual lenses, such as, e.g., proximity sensors that use a light source and a light receiver or detector. | 04-24-2014 |
20140307338 | 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 an object-side. The first lens-group substantially consists of three or less lenses including at least one negative lens and a positive lens. The second lens-group substantially consists of a 21st lens-group and a 22nd lens-group in this order from the object-side. The 21st lens-group substantially consists of three or less lenses and has positive refractive-power. The 22nd lens-group substantially consists of two lenses of a negative lens and a positive lens in this order from the object-side. Predetermined conditional formulas about distance on an optical-axis from a most-object-side lens surface in an entire system to an image-plane, maximum image height, distance on the optical-axis from a most-object-side lens surface in the first lens-group to a most-image-side lens surface in the second lens-group, and focal-length of the entire system are satisfied. | 10-16-2014 |
20140340769 | SUPER WIDE ANGLE LENS AND IMAGING APPARATUS USING IT - A super wide angle lens substantially consists of a positive first lens group in which a positive first lens, a negative second lens, a negative third lens, a negative fourth lens, a positive fifth lens, a sixth lens unit that is a cemented lens, a seventh lens, an aperture stop, and an eighth lens unit that is a cemented lens are arranged in this order from an object side, a second lens group in which a first lens unit that is a positive single lens or a cemented lens and a second lens unit that is a cemented lens are arranged in this order from the object side, and a third lens group including a positive lens. The super wide angle lens is structured in such a manner to satisfy conditional formula (1): 0.8<(T16+T17)/f<2.5. | 11-20-2014 |
20140347749 | IMAGING LENS AND IMAGING APPARATUS - The imaging lens substantially consists of a first lens group, an aperture stop, a positive second lens group which is a focusing group, and a third lens group in this order from the object side. The first lens group substantially consists of a positive first sub lens group composed of a negative meniscus lens, a positive meniscus lens, and a positive lens; and a second sub lens group including a negative lens and a cemented lens, in this order from the object side. The second lens group substantially consists of a positive single lens or a cemented lens. The third lens group substantially consists of a cemented lens, a positive lens, and a negative lens in this order from the object side. | 11-27-2014 |
20140376113 | Lenses for Curved Sensor Systems - The subject disclosure is directed towards lenses for curved surfaces, including multi-element lens assemblies. In one or more implementations, an object-side meniscus lens is coupled to an image/curved surface side subassembly including a biconvex lens. The subassembly may comprise a single biconvex lens or a biconvex lens coupled to a negative meniscus lens. | 12-25-2014 |
20150036230 | OPTICAL IMAGING LENS - An optical imaging lens includes, in order from an object side to an image side, first, second, third, fourth, fifth, sixth, seventh, and eighth lens elements. The first lens element has a negative refractive power, a convex portion on the object-side surface near the outer circumference and a concave portion on the image-side surface near the optical axis. The object-side surface and the image-side surface of the fourth lens element each have a concave portion near the optical axis. The object-side surface of the fifth lens element has a convex portion near the optical axis. The object-side surface and the image-side surface of the sixth lens element each have a convex portion near the optical axis. The eighth lens element has a positive refractive power, and a convex object-side surface. The optical imaging lens only has eight lens elements having a refractive power. | 02-05-2015 |
20150103418 | Objective Optical System - An objective optical system consists of, from an object side to an image side: a first lens group having positive optical power; a second lens group having negative optical power; and a third lens group having positive optical power, wherein the first lens group includes, from the object side to the image side, a first lens having negative optical power and a second lens having positive optical power, and the second lens group is moved according to a change in an object distance to perform focusing, and the following conditional expressions are satisfied: | 04-16-2015 |
20150116849 | OPTICAL IMAGING LENS - The present invention provides an optical imaging lens. The optical imaging lens comprises a lens barrel and several lens elements positioned therein. Each lens element has a lens portion and a peripheral portion formed around the lens portion and extending to the rim. The lens portion is formed with an object-side surface facing to the object side and an image-side surface facing to the image side for passing the light. One of the lens elements is an embedded lens element. The radius from the center to the rim of the embedded lens element is smaller than that of another lens element adjacent to the embedded lens element and thus the rim of the embedded lens element is embedded in the peripheral portion of the adjacent lens element. | 04-30-2015 |
20150293327 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes: a first lens group; a stop; a positive second lens group; and a negative third lens group which is fixed while focusing, in order from the object side. The first lens group includes at least one positive lens, at least one cemented lens, and a negative meniscus lens having a concave surface toward the image side, in order from the object side. The second lens group includes a cemented lens formed by a biconcave lens and a biconvex lens and a biconvex lens, in order from the object side. The third lens group includes a negative meniscus lens having a convex surface toward the object side, a biconcave lens, and a biconvex lens, in order from the object side. The first lens group, the stop, and the second lens group move integrally along the optical axis to focus from an infinite to a finite distance. | 10-15-2015 |
20160077323 | ENDOSCOPE - An endoscope includes a mounting and detaching section, terminals that, when an adapter is mounted on an outer circumference, come into contact with an identification resistor provided in the adapter and having different resistance values for each of adapters, a lead wire that energizes the identification resistor via the terminals, and a flexible board electrically connected to the terminals in the mounting and detaching section and electrically connected to a distal end of the lead wire in a position behind the mounting and detaching section. | 03-17-2016 |
20160091690 | LENS UNIT - A lens unit may include a plurality of lenses, a lens holder, and a circular ring-shaped sealing member made of rubber. A first lens disposed closest to an object side is a plastic lens and formed with a small diameter part in a step shape on an image side of the first lens. A sealing member accommodation part is provided between an outer peripheral face of the small diameter part and an opposed face and accommodates the sealing member so as to have clearance in an optical axis direction. An inner face of the lens holder is formed with a sealing member coming-off prevention part which is projected to the sealing member accommodation part to narrow the clearance on the image side of the sealing member accommodation part and thereby movement to the image side of the sealing member is restricted. | 03-31-2016 |
20160147032 | LENS MODULE - A lens module, including: a first lens including a first conical surface based on an optical axis and a first flat surface extending in a vertical direction with respect to the optical axis; and a second lens including a second conical surface based on an optical axis and a second flat surface extending in a vertical direction with respect to the optical axis, wherein the first conical surface and the first flat surface are connected by a first curved surface having a first radius, and the second conical surface and the second flat surface are connected by a second curved surface having a second radius. | 05-26-2016 |
20160147037 | LENS BARREL - An interchangeable lens has a lens frame holding a movable lens group, another lens frame holding another movable lens group, one actuator that drives one lens frame, and the other actuator that drives the other lens frame. A first yoke forming a magnetic circuit of the one actuator and a second yoke forming a magnetic circuit of the other actuator are disposed away from each other in an optical axis direction, and a nonmagnetic member is interposed between the first yoke and the second yoke. | 05-26-2016 |
20160147045 | IMAGING SYSTEM AND IMAGING OPTICAL SYSTEM - An optical system includes a central portion having a magnification per unit angle of view which increases from a center to an outside at an increase rate and a circumferential portion being outside the central portion and having a magnification per unit of view which increases from the central portion to an outside at an increase rate smaller than the increase rate of the central portion. | 05-26-2016 |
20160161700 | OPTICAL ELEMENT UNIT - An optical element unit is provided comprising an optical element group for projecting light along an optical axis of the optical element group and a housing having an inner housing part partly defining a first space and a light passageway between the inner s housing part and a second space. The inner housing part receives the optical element group. The optical element group comprises an ultimate optical element located in the region of the light passageway. A load-relieving device is provided adjacent to the ultimate optical element, the load relieving device partly defining the first space and the second space and at least partly relieving the ultimate optical element from loads resulting from pressure differences between the first space. | 06-09-2016 |
20160161701 | OPTICAL APPARATUS AND IMAGING SYSTEM INCLUDING THE SAME - An optical apparatus captures imaging light entering into an imager to acquire an image of an object. The optical apparatus includes a lens module and a support. The lens module is configured by a combination of two or more lenses, captures the imaging light through the lenses, and focuses the captured imaging light on the imager. The support supports the lens module at a position apart from the imager by a predetermined distance, such that the imager and the lenses are aligned on the optical axis, and a focal point of the imaging light is formed on the imager. The support is formed such that an expansion-contraction ratio, at which the support expands or contracts along the optical axis in accord with changes in ambient temperature of the optical apparatus, becomes a first expansion-contraction ratio at which the support expands or contracts so as to cancel a movement of the focal point occurring in the lens module along the optical axis in accord with the changes in ambient temperature of the optical apparatus. | 06-09-2016 |
20160170166 | OPTICAL ASSEMBLY INCLUDING PASSIVE OPTICAL ELEMENTS HAVING ALIGNMENT FEATURES | 06-16-2016 |
20160170174 | Image Pickup Lens | 06-16-2016 |
20160252706 | Optical System and Image Pickup Apparatus | 09-01-2016 |
20170235132 | WIDE ANGLE OPTICAL SYSTEM | 08-17-2017 |