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Patent Searching and Data


Matches 901 - 950 out of 3,731

Document Document Title
JPH10325919A
To miniaturize the whole lens system and to satisfactorily correct various kinds of aberration, specially, a distortion by arranging a diaphragm, a biconvex lens, a biconcave lens, a biconvex lens and a meniscus lens having a convex on a...  
JPH10325920A
To obtain an optical system which performs excellent eccentricity adjustment with the constitution of small number of lenses and whose producing performance is hardly deteriorated in comparison with designing performance by assembling a ...  
JP2858639B2
To obtain an ultraviolet wide-angle lens which has a small F number and a wide field angle and secures a space where plural ND filters, polarizing filters, etc., that are put in and out are arranged between lenses and is excellent in ima...  
JPH10319315A
To make a manufacturing cost low while improving resolution by making second and third lenses nearly the same shape from an object side with respect to an image formation lens constituted of three lenses. A first lens L1 is a biconcave l...  
JPH10319314A
To obtain a compact optical system obtaining high image quality and provided with many usable interchangeable lenses and to reduce the drop of illuminace by constituting the optical system of a condenser lens group and an image-formation...  
JP2829981B2  
JPH10311946A
To provide a high performance and bright triplet lens using a diffraction optical element by constituting it with a positive lens, a negative lens and the positive lens from an object side, providing at least a surface of diffraction sur...  
JP2826319B2  
JP2825657B2  
JP2825356B2  
JPH10307253A
To obtain high reading density in the vicinity of image formation magnification 0.16535, to reduce cost and to obtain the sufficient angle of view and sufficient brightness by arranging 1st group to 4th group which are positive, negative...  
JPH10301022A
To attain miniaturization and lowering the cost of a lens and to easily suppress the movement of focus due to temp. change by making a first and a second meniscus lenses whose concave surfaces confront to each other to be plastic lenses ...  
JPH10301057A
To achieve miniaturizing without reducing illumination flux at all and to provide a microstructure and light/thin projection type optical device by configuring a part interfering with an illumination optical system excluding optical lens...  
JPH10301021A
To attain the cost reduction and high performance of a telephoto lens while making the telephoto lens small in size by dividing the whole lens system into two front and rear groups, having a telephoto lens constitution in which the front...  
JP2848523B2
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...  
JPH10282411A
To provide a projection optical system constituted so that partial chromatic aberration and the other monochromatic aberration can be compatibly corrected by including a first lens group having positive power, a second lens group having ...  
JPH10282410A
To provide a compact, high-performance, inexpensive and light-weight lens for a CCTV by constituting a lens system consisting of a first diaphragm, a lens and a second diaphragm so that at least one surface thereof is aspherical and a sp...  
JPH10282407A
To provide an optical lens capable of obtaining sufficient compensation of aberration to a different color wavelength. An optical lens is composed so as to have joined lenses 11, 12 made of a material having different refractive indices ...  
JP2811447B2  
JPH10268188A
To properly maintain a back focus without using an spherical lens, while realizing compact type, by inseating a negative lens having a prescribed refracting power at the pre-stage of a front joint lens, applying a gauss type lens constit...  
JP2808817B2  
JP2808628B2  
JP2806104B2  
JPH10253881A
To excellently correct a chromatic aberration, and read a color document with high definition by arranging positive first lens and second lens, negative third lens and fourth lens and positive fifth lens and sixth lens in this order from...  
JPH10257506A
To suppress the occurrence of color moire without using any optical low-pass filter by specifying the relation between an optical lens and a color imaging device. An image pickup device is constituted so as to satisfy the conditional exp...  
JPH10239594A
To correct distortion aberration satisfactorily and prevent shading, by providing a solid image pickup element for generating larger output to luminous flux entering a light receiving face in the state of inclining outward from the optic...  
JP2790919B2  
JPH10227974A
To provide the photographic lens for an electronic still camera which is compact and has a wide field angle and excellently compensates distortion by arranging a negative lens which is concave to the image place side, a positive meniscus...  
JPH10221509A
To provide an image-forming optical system and a photographic measuring method with which a position of the gravitational center of an object image can be precisely measured when photographic measurement can be carried out by using an el...  
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...  
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...  
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...  
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 ...  
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...  
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...  
JP2782520B2  
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...  
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...  
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  
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 ...  
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 ...  
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...  
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...  
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 ...  

Matches 901 - 950 out of 3,731