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Patent Searching and Data


Matches 1,001 - 1,050 out of 3,760

Document Document Title
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...  
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...  
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...  
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  
JP2716526B2  
JP2714685B2  
JP2714686B2  
JPH1039207A
To drastically reduce the cost, to make the back focus satisfactorily long even in a small-sized lens system, also, to make an image forming lens bright and to make the viewing angle wider, by arranging a 1st negative lens, a 2nd positiv...  
JPH1039236A
To make it possible to cover the shortest observation distance without requiring a close-up lens by providing a telescopic optical system which has, successively from an object side, an objective optical system having a stationary first ...  
JPH1039205A
To obtain a bright scanning lens having a small number of component lenses, capable of making excellent compensation for various aberration, whose F value is reduced, by providing a 1st lens whose refractive power is negative, a 2nd lens...  
JPH1039206A
To make an image forming lens small, have a viewing angle larger than 150°, a bright Fno of 1.8 or smaller, a sufficiently long back focal length and good resolving power while composing it of five lenses. First-five lenses L1-L5 have n...  
JP2712370B2  
JP2711128B2  
JP2710955B2  
JP2711127B2  
JP2707789B2  
JP2709460B2  
JP2706789B2  
JP2706946B2  
JPH1020187A
To provide an optical device capable of sufficiently enjoying the change of an optical image. This device is provided with a lens L1 composed of a meniscus lens having a positive power, a lens L2 composed of a positive power lens and a d...  
JP2699977B2  
JP2700003B2  
JP2696797B2  
JP2697822B2  
JP2697119B2  
JPH103033A
To satisfactorily correct spherical aberration of a luminous flux of which numerical aperture exceeds 1 by providing an immersion system objective lens with a front group of an approximately afocal system and a rear group having a positi...  
JPH09329766A
To display a stable low pass effect and the obtain a satisfactory picture by forming a prescribed continuous shape and refractive index distribution in a radial direction by setting up the enter of an incident luminous flux as an origin ...  
JPH09329740A
To obtain a long focal distance, comparatively long back focus, high level color correction, low distortion, and obtusity to a temperature change by arranging lens parts in the order of low dispersion, low dispersion, high dispersion, an...  
JPH09329739A
To provide an optical system reducing the number of constitutional lenses, considering the difficulty and cost of manufacturing of a low material and capable of attaining sufficiently enough performance and miniaturization by the use of ...  
JP2692996B2  
JP2690765B2  
JPH09325264A
To locate an exit pupil at almost infinity and to shorten a total length by providing a lens having a positive refractive power provided in the vicinity of an image plane between a main optical system and a solid-state image pickup eleme...  
JPH09318872A
To correct shake without changing a focal distance in an a focal state even in the same inserting a lens between light beam by opposing a planoconave lens to a planoconvex lens through a small cavity and specifying relation between the r...  
JP2683895B2  
JPH09304695A
To obtain a compact and bright image-formation lens securing a long back focus and a wide field angle and realizing the reduction of cost in the case of mass production by making the lens a retrofocus type lens constituted of two concave...  
JP2683463B2  
JP2679130B2  
JP2679017B2  
JP2677711B2  
JP2676000B2  
JPH09292565A
To make the angle of view wide, to make the lens bright, to insert various optical members such as a low-pass filter, etc., between a lens system and an image pickup element, to attain long back focus and to obtain high optical performan...  
JPH09292566A
To make the angle of view wide, to make the lens bright, to insert various optical members such as a low-pass filter, etc., between a lens system and an image pickup element and to obtain high optical performance by specifying the ratio ...  
JPH09288235A
To provide an image forming lens having a high image filed illuminance even in the case of using in an unmagnified state, and also capable of suppressing the fluctuation of various kinds of aberration. The image forming lens 16 is consti...  
JPH09281388A
To set the number of lenses to about 2 to 4 and to excellently compensate aberration by providing a radial type refractive index distribution lens having axially symmetric refractive index distribution in a radial direction in a rear gro...  
JP2665274B2  
JPH09265037A
To smoothly and easily perform driving control corresponding to a zoom lens where not only a movable lens group for focusing but also a movable lens group for variable power are moved in the case of focusing by providing a movable lens g...  

Matches 1,001 - 1,050 out of 3,760