| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359662000 | High distortion lens (e.g., f0, etc.) | 10 |
| 20110096405 | 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. The first lens is a double concave negative lens, the second lens is a positive meniscus lens, and the third lens is a double convex positive lens. Both of the curved surfaces of 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 | 04-28-2011 |
| 20110102904 | 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. The first lens is a plano-concave negative lens, the second lens is a positive meniscus lens, and the third lens is a double convex positive lens. All of the curved surfaces of the second lens are bent in the direction towards the diaphragm, wherein, 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 | 05-05-2011 |
| 20110199688 | PLASTIC LENS, AND MOLDING METHOD AND MOLDING MOLD THEREFOR - Provided is a plastic lens molded with a mold includes: an optical surface formed of an incident/output surface in a rectangular shape formed in a direction orthogonal to an optical axis; a long side surface portion that is a side surface in a longitudinal direction adjacent to the optical surface; at least one positioning reference portion as a positioning reference for positioning the plastic lens with respect to another member, formed on the long side surface portion; a gate-side short side surface portion with an injection port for a resin formed therein; an anti-gate side short side surface portion positioned on an opposite side of the gate-side short side surface portion; and a deflection suppressing shape portion in one of a convex shape and a concave shape formed on the anti-gate side short side surface portion. | 08-18-2011 |
| 20110242673 | LONG-LENGTH LENS - A lens includes a lens portion having two opposite oblong surfaces at least one of which is a curved lens surface having a reflective power. A cross-sectional area of the lens portion varies from a center toward each end in a longitudinal direction of the lens portion. A rib portion is disposed at each of two opposite sides of the lens portion adjacent to longer sides of the oblong surfaces of the lens portion, and extends along the longitudinal direction of the lens portion. A cross-sectional area of the rib portion varies along the longitudinal direction in a manner that renders variations of a cross-sectional area of a portion including the lens portion and the rib portion along the longitudinal direction of the lens portion smaller. | 10-06-2011 |
| 20110242674 | LONG-LENGTH LENS - A lens including a lens portion having first and second opposite oblong surfaces is disclosed. At least one of the first and second oblong surfaces of the lens portion is a curved lens surface having a reflective power. A rib portion is disposed at each of two opposite sides of the lens portion facing in a direction of a width of the first oblong surface. The rib portion extends along a longitudinal direction of the lens portion in a position separate from the second oblong surface. A draft surface extends between the second oblong surface and the rib portion. The draft surface includes a slant surface slanting outwardly toward the rib portion. The slant surface is curved inwardly with a draft thereof increasing gradually toward the rib portion. | 10-06-2011 |
| 20120314296 | ENHANCED DEPTH OF FIELD BASED ON UNIFORM RELATIVE ILLUMINATION VIA LENS WITH LARGE DISTORTION - A lens system is provided that comprises an enhanced depth of field based on a uniform or near uniform relative illumination via a lens with a large distortion. The distortion can be corrected with image processing equipment. The lens system can comprise an aperture stop and a group of lens, wherein there can be about five lenses in the group of lenses. The lens system is designed for relative illumination such that the light distribution over the lens system is substantially uniform. | 12-13-2012 |
| 20130050839 | ATHERMAL APOCHROMATIC TELECENTRIC F-THETA LENS WITH LOW F-NUMBER - A compact F-theta lens suitable for precise mapping and aerial photography has an F# of not more than 4.5 and a full field of view of 60° (high quality field over) 53°. The lens is near-telecentric to less than 6°, apochromatic from 450 nm to 650 nm, and athermal from −15° C. to +40° C. Embodiments have a focal plane diameter of 104 mm and are compatible for use with a CMOS 1.8 gigapixel multiple FPA. In some embodiments the focal length is 101 mm and the back working distance is more than 10 mm. In embodiments the lens includes three groups of optical elements, with an aperture located between the first and second groups. In some of these embodiments, the first group has at least three elements, while the second and third groups have four and three elements respectively, and the diameter of the first two groups, including housing, is less than 65 mm. | 02-28-2013 |
| 20140160578 | SCANNING LENS AND METHOD FOR MANUFACTURING SCANNING LENS - A scanning lens molded of resin includes: a lens portion having an elongate shape extending in a main scanning direction and having an optical surface; a slant portion having at least one slant surface slanting relative to the main scanning direction; and an ejector pin mark formed on the slant surface when thrusting out the scanning lens by ejector pins. The ejector pin mark is formed along a slanting direction of the slant surface. | 06-12-2014 |
| 20150022899 | F-THETA OBJECTIVE - An F-theta objective is provided that has five individual lenses with a first individual lens as biconcave lens with a focal length, a second individual lens as meniscus with a focal length, a third individual lens as meniscus with a focal length, a fourth individual lens as a biconvex lens with a focal length and a fifth individual lens as a plano-convex lens with a focal length and a total focal length f of the F-theta objective. A ratio between the focal lengths to the total focal lengthsatisfies predetermined conditions. | 01-22-2015 |
| 20150116842 | FREEFORM IMAGING LENS AND FREEFORM IMAGING SYSTEM USING THE SAME - A freeform imaging lens defined in a (x, y, z) coordinate is provided. The freeform imaging lens comprises a first surface and a second surface opposite to the first surface. The first surface comprises a first freeform surface and a second freeform surface symmetrical about x-z plane. The first freeform surface and the second freeform surface are 5 | 04-30-2015 |
