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Patent Searching and Data


Matches 801 - 850 out of 1,948

Document Document Title
JP08278443A
PURPOSE: To provide a photographic lens device which is capable of assuring a sufficient back focus and the exit pupil position from an imaging plane and has high performance. CONSTITUTION: A stop 2, a first lens 6, a second lens 8, a th...  
JP08262321A
PURPOSE: To provide a bright ralay optical system comparatively small in size and high in image forming performance. CONSTITUTION: This system is provided with a first lens group G1 having comparatively weak negative refractive power, a ...  
JP08265614A
PURPOSE: To provide an image split image pickup device by which color informa tion is obtained with a simple configuration by forming plural images with different spectral characteristics split by an eccentric optical member and a color ...  
JP08248306A
PURPOSE: To obtain an optical system which corrects axial chromatic aberrations generated in one relay up to a good level with a small number of lens elements by constituting an optical system for unmagnification imaging with one piece o...  
JP08248305A
PURPOSE: To provide a long focus microlens which decreases aberration fluctuations from infinite photography to unmagnification photography and is good in aberration balance. CONSTITUTION: This long focus lens is composed, successively f...  
JP08234097A
PURPOSE: To provide an optical lens system for a space optical transmission device which is well corrected of various aberrations in spite of a large aperture diameter and small number of constituting elements. CONSTITUTION: This optical...  
JP08234096A
To provide an improved lens system constituted of two lens elements and having a curved image surface. This optical system 10 is used for a low-cost camera 100 having a curved image surface 109, the optical system 10 is constituted of a ...  
JP08220424A
PURPOSE: To provide a Gauss type lens having a vibration proof function, sufficient brightness, back focusing capability and a superior image forming performance. CONSTITUTION: At least the lens is provided with a first lens group G1 hav...  
JP08220430A
PURPOSE: To reduce the cost and to maintain a sufficient performance even though environmental conditions including temperature and humidity vary by employing many plastic lenses. CONSTITUTION: The lens system is constituted by three len...  
JP08220423A
PURPOSE: To obtain a compact optical system for binoculars short in an optical axis direction in which spherical aberration and field curvature are excellently corrected by providing an objective optical system with an aspheric surface. ...  
JP2554601B
PURPOSE: To provide a ring pattern exposure device and method for plotting a highly minute ring pattern having the distribution of arbitrary ring width. CONSTITUTION: A photosensitive material is formed on the remaining part of a substra...  
JP2554600B
PURPOSE: To provide a manufacture method for easily obtaining a transmission grating element whose refraction efficiency is high. CONSTITUTION: One stage is formed on the surface of a substrate by an exposure deposition process for formi...  
JP08201686A
PURPOSE: To provide an inexpensive triplet lens using a plastic lens having an excellently compensated off-axis chromatic aberration by composing the lens of three lenses of a glass lens and plastic lenses and a diaphragm and satisfying ...  
JP08201692A
PURPOSE: To provide a short distance correcting lens suitable for photographic and video use, etc. CONSTITUTION: In a short distance correcting lens comprising, in order from the object side, a first lens group G1 having a positive refra...  
JP08190047A
PURPOSE: To excellently compensate various aberrations, specially distortion aberration even though both sides of the system is made to be telecentric while ensuring a wide exposing region and a large numerical aperture and making the sy...  
JP08190049A
PURPOSE: To provide an optical system for copying machine having high contrast and the brightness of F8 and capable of reducing the cost by using the glass of a low unit price by comprising the system of plural lens groups composed of si...  
JP08179204A
PURPOSE: To provide a projection optical system having a large exposure region, high resolving power and a large numerical aperture and a projection aligner provided with the same. CONSTITUTION: The projection optical system PL projects ...  
JP08179194A
PURPOSE: To excellently compensate aberrations when the focusing is executed for bodies in a wide range from an infinite-distance body to a short-distance body by constituting a macrolens so that it consists of three lens groups and sati...  
JP08171050A
PURPOSE: To provide a Gaussian photographic lens with a large aperture having a small number of lenses, excellently compensated in spherical aberration and sagittal coma aberration. CONSTITUTION: In A Gaussian photographic lens comprisin...  
JP08171051A
PURPOSE: To provide a Gaussian photograpic lens with a large aperture having a small number of lenses, excellently compensated in spherical aberration and sagittal coma aberration. CONSTITUTION: In a Gaussian photographic lens comprising...  
JP08166540A
PURPOSE: To compensate aberrations 'while ensuring a wide exposure region and a large numerical aperture and making both sides telecentric by specifying the refractive powers, focal distances and a composite focal distance of plural lens...  
JP08160293A
PURPOSE: To compensate sagittal coma aberration and other aberrations by satisfying a specified condition in a photographic lens composed of a front group composed of, in order from the object side, a first, a second and a third lenses a...  
JP08160292A
PURPOSE: To excellently compensate chromatic aberration and on-axis chromatic aberration and to miniaturize a lens by shortening the back focal length by limiting a composite focal distance of a first and a second lenses within a specifi...  
JP2528771B
PURPOSE: To obtain a projection lens capable of reducing conventional three pieces type of expensive dies for molding to two pieces type saving one piece type, and decreasing die expenses, and with satisfactory optical performance and wi...  
JP08152555A
PURPOSE: To obtain a photographing lens constituted of six lenses of six groups as a whole, using a rear focus system where back focus is long and having high optical performance. CONSTITUTION: This photographing lens is provided with a ...  
JP08146290A
PURPOSE: To provide an IR wide angle single lens which has an excellent imaging characteristic and is simultaneously approximately uniform in a peripheral light quantity ratio. CONSTITUTION: This IR wide angle single lens 1 is a biconvex...  
JP08146204A
PURPOSE: To improve roundness, to render a centering process unnecessary, and to simplify the production process by forming the outer diameter of a plastic GRIN lens in a polymn. process of a preform after diffusion. CONSTITUTION: The le...  
JP2521235B
PURPOSE: To provide the optical system of high performance with less decline of optical performance accompanying assembly errors by making light be incident on one lens element through the area of a transmission grating element provided ...  
JP08114767A
PURPOSE: To simplify the constitution of a collimator lens of three-element constitution which consists, successively from a parallel luminous flux side, a biconvex positive lens, a negative lens having a concave face on the parallel lum...  
JP08114768A
PURPOSE: To improve the offaxial performance of a collimator lens of 4-element constitution which consists, successively from a parallel luminous flux side, a biconvex positive lens, a negative lens having a concave face on the parallel ...  
JP08114742A
PURPOSE: To obtain an optical system, specially a relay lens system by which high resolution can be obtained even when an image pickup element for an electronic camera obtained by combining an image pickup lens system and the relay lens ...  
JP08110465A
PURPOSE: To provide a photographing lens composed of two spherical lenses and can be used by the viewing angle of a standard lens having a half viewing angle of 15°-30°. CONSTITUTION: This lens is composed of two spherical lenses arran...  
JP08101365A
PURPOSE: To provide a laser beam apodizer of liquid crystal by using a cholesterol liquid crystal(CLC), of which selective reflection peak wave length is adjusted by changing the mixing ratio of the mixture of nematic liquid crystal and ...  
JP08094926A
To correct the lateral chromatic aberration and the inclined spherical aberration at a high level and at the same time by making an objective lens have plural long crown type focusing lenses, and plural short flint type divergent lenses....  
JP08096014A
PURPOSE: To provide a lens system design method and device which can fast design a lens system with the minimum computational amount. CONSTITUTION: This lens system design method locally changes the value of plural component elements so ...  
JP08094927A
PURPOSE: To enable the photographing in a dark condition, and to facilitate the aberration correction in the case of using a light amplification exchange lens. CONSTITUTION: The first - sixth lens groups L1-L6 are arranged in order from ...  
JP08069092A
To provide a photographing camera having a view lens which can be used by an aperture ratio from F/8 to F/16, especially, from F/9 to F/11. An optical system is constituted of a single meniscus lens 10 which is formed by an optically tra...  
JP08068935A
PURPOSE: To obtain a camera provided with a compact triplet type photographing lens. CONSTITUTION: This is the camera loading a triplet lens for photographing 1 constituted of a first positive refractive-power lens, a second negative- re...  
JP08062497A
PURPOSE: To reduce uncomfortable feeling of a spectacled person by forming a first surface into a spherical surface and a second surface into an aspherical surface which satisfies a specific conditioning expression so as to correct aberr...  
JP08054575A
PURPOSE: To provide a light beam scanner provided with a light beam scanning optical system corresponding to high speed light beam scanning. CONSTITUTION: This scanner is provided with a 2nd optical system 14 making constant scanning vel...  
JP08043730A
PURPOSE: To well correct the chromatic aberration, curvature of field and astigmatism of an observation optical system in particular by using a single biconvex lens of which at least either face of the face on the side of the eye to be e...  
JP08036124A
PURPOSE: To obtain a simply constituted and inexpensive lens holding device and a lens system provided with it by providing the device with a lens barrel and a fixed ring and shading the edge surface of the lens barrel by using the fixed...  
JP08029677A
PURPOSE: To provide high optical performance while composing one relay of an image transmitting optical system used for a rigid endoscope from two lenses. CONSTITUTION: In an optical system of almost unmagnified image, two positive lenes...  
JP08029678A
PURPOSE: To provide inexpensive rigid endoscope observing optical system having well compensated chromatic aberration and a small number of lenses by including a diffraction type optical element generating a positive on-axis aberration i...  
JP08029714A
PURPOSE: To prevent sagittal image surface curvature from occurring by using a cylindrical lens having a cylindrical surface capable of being easily processed. CONSTITUTION: The cylindrical lens 20 converges a light beam from a semicondu...  
JP08029679A
PURPOSE: To constitute a high speed shutter device which opens by 100% and whose shielding operation speed is made high, so as to be small in size and light in weight and to provide a practical camera capable of carrying out stroboscopic...  
JP08021951A
PURPOSE: To realize an inexpensive beam shaping optical system having a simple constitution and emitting a converged beam. CONSTITUTION: The beam emitted from a monochromatic light source S0 such as a semiconductor laser is shaped into t...  
JP08015605A
PURPOSE: To excellently compensate chromatic aberration and to considerably decrease a number of lens constitution in the read out lens system of a picture reader by arranging a specified lens composed of two lenses. CONSTITUTION: This l...  
JP08015609A
PURPOSE: To compensate aberrations and curvature of field while keeping the balance, to make the lens comparatively bright am to take close-up photography by comprising a first to a third lens groups having specified refractive powers an...  
JP08007603A
PURPOSE: To provide a spotlight possessing heat insulating action and downsized shape. CONSTITUTION: The housing 21 os a spotlight is formed into a double structure composed of an interior wall and an exterior wall, and its member throug...  

Matches 801 - 850 out of 1,948