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Patent Searching and Data


Matches 1,001 - 1,050 out of 3,807

Document Document Title
JP2787475B2  
JPH10213739A
To obtain a photographing lens which has single-lens constitution, which is made small in size and where color aberration is excellently compensated by providing a positive lens with at least one aspherical surface and one diffraction le...  
JPH10206729A
To reduce aberrational variation due to focusing by excellently compensating aberrations from an infinite distance to a short distance. This telephoto lens consists of a 1st convergent lens group G1, a 2nd divergent lens group G2, and a ...  
JPH10206752A
To constitute an optical equipment provided with plural different functions by separating/connecting and combining first -third lens groups. This optical system is constituted of the first lens group composed of the combined lens of a bi...  
JPH10206726A
To provide high optical performance and to reduce the number of constitutive lenses by providing an optical diffraction element satisfying a specified conditional expression on any one lens surface between 1st and 2nd lenses at least, an...  
JPH10206730A
To widen an image angle, to make a lens compact and light and to satisfactorily correct various abberrations by arranging a 1st lens and a 2nd lens and making any one of four lens surfaces into non-spherical surface at least. A 1st lens ...  
JPH10206725A
To provide a photographing lens constituted of two lenses being two groups where the illuminace of an image surface is high and the fluctuation of aberration is restrained without lowering moldability. This photographing lens 30 is const...  
JPH10206336A
To provide an optical member inspecting device by which the quality can be judged on the basis of a comparatively severe criterion in a central part and the quality can be judged on the basis of a comparatively gentle criterion in a peri...  
JP2782520B2  
JPH10197789A
To constitute a lens system with a small number of lenses and to suppress variation in lightness between the center part and peripheral part of an image plane at the time of application to a camera equipped with a solid image pickup elem...  
JPH10197785A
To obtain a lens system in which the secondary spectrum of chromatic aberration is highly corrected with less optical components by specifying relation between a radial type GRIN lens whose refractive index is changed in a direction perp...  
JPH10197786A
To excellently compensate the various kinds of eccentric aberration and to realize very large displacement compensation (blur compensation) with very small eccentric driving amount by moving a second group on an optical axis so that focu...  
JPH10197790A
To provide a small-sized projection lens which has a very wide field angle of back focus as compared with is focal length, consists of a reduced number of lens elements and has superior image forming performance, to provide a lighting le...  
JPH10186223A
To minimize both of astigmatism and the curvature of an image plane, to enlarge an allowable range when a triplet lens is manufactured and used and to enable the triplet lens to be easily handled by forming zonal structure having the act...  
JP2575871Y2  
JPH10170819A
To provide a photographic lens that consists of three lenses and can excellently compensate curvature of field, and is suitably made small-sized, lightweight, and low-cost. A meniscus lens 11, which is convex to an object surface 10 and ...  
JPH10170818A
To provide a new optical system that is excellently corrected in various aberrations such as color aberration in spite of having a large size and a relatively wide viewing angle, by providing the optical system with a refractive optical ...  
JPH10161020A
To provide the photographic optical system which has high performance and is low-cost by using the diffraction optical element. A 1st positive convex meniscus lens of which the object side is convexed, a lightness stop, and a 2nd biconve...  
JPH10161237A
To enhance a telecentric characteristic with respect to white light by constituting a positive and a negative lenses so that the Abbe's number of the materials thereof become mutually different. The white light radiated from a light sour...  
JPH10153736A
To obtain an ability of magnification variable action while keeping a long focal distance, long back focus amount and high performance, by constituting a projection lens of a first lens unit having a weak refractive power, a second lens ...  
JPH10150603A
To provide an extremely small electronic still camera. In an electronic still camera with a photographing lens 1 and an image storing means 2, the lens 1 is the single focal distance lens of a fixed focus, the means 2 is a semiconductor ...  
JPH10142503A
To enable a long back focus length, color correction of a high level, low distortion and low sensitivity to a temp. change by providing the projection lens with first, second and third lens units having prescribed relations. The first le...  
JP2756333B2  
JPH10133100A
To obtain an image pickup lens having simple constitution and fine optical performance by arranging a brightness stop for restricting a beam in the vicinity of the object side face of a radial type GRIN lens having positive refractive po...  
JPH10133120A
To provide an inexpensive microscope objective lens of an achromat class which has various aberrations compensated excellently up to an image periphery by providing specific constitution and meeting specific conditions. This lens is equi...  
JPH10133101A
To excellently compensate the trapezoidal distortion, distortion aberration, and image plane tilt of a projection original image and project the image obliquely while making the whole optical system compact by making some lenses of the o...  
JPH10123414A
To obtain an objective lens for a scanner which has high degree resolution, and copes with even a long line and secures uniform image formation performance without substantially causing distortion up to an end part by using objective len...  
JPH10123410A
To provide an objective lens capable of obtaining sufficiently high numerical aperture(NA), sufficiently correcting color aberration, making light in weight and facilitating manufacture by using low dispersion glass material whose Abbe n...  
JP2750775B2  
JPH10115776A
To provide an image pickup lens which is easily produced and has optically complete performance and whose constitution is simplified by obtaining a combined lens consisting of at least two positive lenses and at least one negative lens a...  
JPH10111449A
To obtain a lens capable of obtaining excellent image quality, being miniaturized and having a short focal distance by making a rear lens unit not possessing a negative lens, and making front and rear lens units cooperate with each other...  
JPH10104505A
To obtain a microlens with which photographing from infinity near to a life size is possible without changing its overall length and which has high performance and excellent operability by constituting the microlens in such a manner that...  
JPH10104512A
To obtain an optical system with which the well correction of an offaxial aberration and more particularly distortion aberration and magnification aberration is possible even if opening efficiency is improved by forming the optical syste...  
JPH10104511A
To provide an inexpensive image pickup lens of high performance having a F value of about two, composed of a small number of lenses, two lenses, and available for a lens of CCDTV, etc. This image pickup lens is composed of a first lens h...  
JPH10104509A
To make the common use of lens elements and to obtain a wide angle lens group of a low cost which is well corrected of aberrations in spite of a fewer kinds of the lens elements by constituting the wide angle lens group satisfying specif...  
JPH10104507A
To obtain an objective lens of a numerical aperture of ≥0.7 with an aspherical two-elements set by forming the first face on an object side as a ellipsoid of revolution and setting the curvature of the first face, the glass material (r...  
JP2740662B2  
JP2740672B2  
JPH1096855A
To fully correct aberration by making the focal distance of a power doublet lens always smaller than the absolute value of the focal distance of each aspherical meniscus element. This projection lens optical system is a pair of strongly ...  
JPH1090597A
To provide a photographic lens which is constituted of two lenses, which is suitable to make the lens small in size, to make the lens light in weight and also to reduce the cost. A meniscus lens 11 is arranged on the front side, and a bi...  
JPH1090596A
To obtain an optical system which is corrected of chromatic aberrations and has good imaging performance without increasing the number of the constituting elements of a lens having an incident surface of a concave surface and having posi...  
JPH1082950A
To reduce the number of image lenses by including two image lenses having lens data and the optical arrangement. Since a scrambler 31 improves the uniformity of an incident light beam by randomly reflecting light made incident from a lam...  
JPH1078543A
To excellently compensate chromatic aberration including g-line in an optical system used with a light source of white light or multiwavelength by satisfying a specified condition when the inclination of the refractive index distribution...  
JPH1073760A
To obtain a signal lens for which a DOE(diffraction type optical element) is used and which features high specifications and high image quality by using a specific positive lens. The diffraction type optical element consisting of the pos...  
JPH1073758A
To make it possible to improve the depth of focus of an image forming lens and to improve brightness by perpendicularly orienting the rear surface of a first main body consisting of a substantially transparent double refractive liquid cr...  
JPH1073759A
To obtain a compact and inexpensive optical system having excellent image-forming performance on both a tangential image surface and a sagittal image surface necessary for an optical system for reading a secondary bar code and consisting...  
JPH1062607A
To reduce the cost of the whole lens system of a radial type GRIN lens by filling at least one of surfaces transmitting light with a filler material without being polished. The non-polished surface 2 of a radial type GRIN lens 1 is arran...  
JP2722622B2  
JPH1048516A
To provide a low priced CCD lens of high performance being small in size and light in weight by composing it of a small number of lenses and adopting all plastic spherical lenses or glass spherical lens for a part of the lenses. This CCD...  
JP2717560B2  

Matches 1,001 - 1,050 out of 3,807