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Patent Searching and Data


Matches 801 - 850 out of 3,829

Document Document Title
JP2001281535A
To provide a Gauss type photographing lens whose image surface is flat from the center to an off-axis peripheral viewing angle and which has high performance while securing production propriety including cost by disposing the positive, t...  
JP2001281536A
To obtain a Gauss type lens realizing brightness equal to or above about F1.4, having the angle of view equal to or above about 24 degrees, securing sufficient back focus and excellently correcting aberration in spite of compact constitu...  
JP3234618B2
PURPOSE: To obtain the large-aperture intermediate telephoto lens which has various aberrations to a short-distance object point well compensated by composing the lens of a 1st and a 2nd lens group, a stop, and 3rd-5th lens groups, and s...  
JP2001515604A
(57) On the whole, summary book invention relates to the technology of stabilizing the alignment in an interferometer (5) and the rapid scanning type Michelson interferometer (5) used with a Fourier transform spectrometer much more in de...  
JP2001242377A
To realize miniaturization and high contrast and to correct aberration such as chromatic aberration.This lens is constituted by sticking a 1st lens 11 made of resin material and a 2nd lens 12 made of glass material, and provided with an ...  
JP3221765B2
PURPOSE: To provide the large-diameter macrolens which have aberrations compensated excellently from an infinite distance to a short distance corresponding to unmagnification by composing the lens of a front group which has at least one ...  
JP2001183578A
To provide a bright, inexpensive image pickup lens which is constituted of a small number of lenses, and which is used for a high performance CCD camera and a CMOS camera, etc. In the image pickup lens, at least one surface of a 1st lens...  
JP2001176109A
To provide a compatible optical pickup device utilizing a laser beam of two different wavelengths in a short wavelength band, a compatible optical pickup device capable of effectively correcting the occurrence of aberration owing to rapi...  
JP2001174712A
To reduce the cost by reducing the number of kinds of lenses to reduce the frequency for setting the condition of a lens working machine.The material and the shape of at least one of lenses in a front end illumination optical system of a...  
JP3201394B2
To provide an fθ lens for two-dimensionally scanning optical system for a printed board drilling work capable of realizing high fθ linearity over a wide two-dimensional scanning range, the telecentric characteristic, and the convergenc...  
JP2001166205A
To provide a compact projection lens which is composed of three groups; negative, positive and positive, is insertable with a color synthesis optical system but has an adequate back focus not longer than needed and telecentric characteri...  
JP2001507463A
(57) The spherical aberration of a summary optical beam 合焦 a beam, and is determined by dividing the section into at least two same mind zones (50, 51). The sub beam which passes through a zone is 合焦 (ed) on a focal detection sys...  
JP2001141995A
To provide an excellent optical projection lens system for photolithography. A first lens group G1 having a positive refracting power, a second lens group G2 which has a negative refracting power and consists of a waist 37 having a minim...  
JP3168424B2  
JP2001133684A
To obtain a photographic lens system which is composed of four lenses as a whole and has a high telecentric property and a high optical performance. This photographic lens system is composed of a first group, consisting of a meniscus len...  
JP2001100090A
To hold high telecentricity while securing a wide field angle and making an optical system small-sized, to secure sufficient back focus length, and further facilitate manufacturing. A 1st lens 1 composed of a concave lens, a stop 3, and ...  
JP2001100096A
To provide a wide-angle color image read lens which is relatively light and compact and can have aberrations excellently corrected by using four elements in four groups and meeting prescribed conditional expressions. This lens has a 1st ...  
JP2001100091A
To provide a photographic lens which has high resolution, small distortion aberration, long back focus, and excellent telecentricity and is compact and few in the number of constitutive lens. The photographic lens meets conditional inequ...  
JP2001504949A
(57) The lens system for summary electronic devices has two lenses. The 1st lens (1/of field side 2) has negative optical refracting power, and the 2nd lens (4/of field side 5 or 5/of field side 6) has positive optical refracting power, ...  
JP2001091828A
To provide a lens for reading an image which is composed of six lenses, namely, positive, positive, negative, negative, positive and positive in this order from an object side, which is comparatively bright, whose angle is wide and whose...  
JP2001083411A
To make the length of back focus long and to restrain aberration with good balance while attaining a wider viewing angle and high resolution by constituting a wide-angle lens of three lens groups being negative, positive and positive and...  
JP2001083415A
To provide a glass-made objective lens for excellently reproducing a DVD and a CD. At least one surface of the glass-made single lens is concentrically divided into a 1st aspherical surface area 104 including an optical axis, a 2nd asphe...  
JP2001083409A
To provide an image pickup lens which is constituted so that desired optical performance can be maintained, a back focus distance can be sufficiently secured, a high telecentric property can be secured and respective aberrations can be e...  
JP2001075006A
To excellently correct each aberration and to easily manufacture an image pickup lens while maintaining a desired optical performance and securing a wide viewing angle. This lens is constituted by successively arraying a diaphragm 4, a f...  
JP3148221B2  
JP2001066523A
To provide an eyepiece lens used for an observation optical system such as binoculars, a telescope and a microscope capable of excellently compensating aberration to the peripheral part of its field, restraining distortion aberration wit...  
JP3142127B2  
JP3140841B2  
JP2001051191A
To provide an fθ lens for two-dimensionally scanning optical system for a printed board drilling work capable of realizing high fθ linearity over a wide two-dimensional scanning range, the telecentric characteristic, and the convergenc...  
JP2001051190A
To provide a large aperture lens in which a distortion aberration is not enlarged but other various aberrations are corrected excellently, by specifying a lens formation. This large aperture lens is composed of first and second lenses L1...  
JP3134880B2  
JP3133360B2  
JP3155360B2
PURPOSE: To provide the visual display device by which images can be observed at the angle of view wider than 40° and flat and sharp images can be observed even at the periphery. CONSTITUTION: This visual display device is composed of a...  
JP3130527B2  
JP3128125B2  
JP2001021798A
To provide a small-sized and light-weighted telephoto macro-lens system to allow life-size photographing, suitable for an AF camera, and having high optical performance.This system is composed, in order from an object side, of the first ...  
JP3123947B2  
JP2001004915A
To make total transmitted light quantity maximum and to obtain a bright and excellent observed image by including at least two or more surfaces having optical refractive power between an object image and a pupil position and satisfying a...  
JP3115879B2  
JP3117225B2  
JP2000338396A
To obtain a rear focus type middle-range telephoto lens whose F number is ≤2.8, the angle of view is about 26° by which the mechanism of a lens barrel can be simplified, which is adequate to auto-focusing, and whose performance is hig...  
JP2000321490A
To obtain a photographic lens which has a ≥60° photographic view angle without degrading the optical performance. This photographic lens 10 has six-group constitution of a 1st lens group 11 to a 6th lens group 16 having negative, posi...  
JP2000322757A
To sufficiently reduce the diameter of a light beam to be converged on each information recording layer by designing to minimize the spherical aberration of the light beam that converges on the information recording layer positioned near...  
JP2000321489A
To provide an image pickup lens capable of maintaining desired optical performance, properly setting the power of a 1st lens and the power of a 2nd lens while a large back focus distance is secured, and being easily manufactured. This im...  
JP2000321494A
To obtain a variable power optical system provided with vibration- proof function which obtains a still image by optically correcting the blur of a photographic image when the variable power optical system vibrates. This variable power o...  
JP3122970B2
PURPOSE: To embody a photographing lens good in aberration compensation and having wide photographing viewing angle with a low cost single lens by making at least one surface of a biconvex single lens aspherical shape and satisfying a sp...  
JP3103166B2  
JP2000292688A
To provide an image pickup device having a photographing lens having the short lens total length and maintaining optical performance of the whole image screen in a well-balanced state by adopting a triplet type, arranging a diaphragm in ...  
JP3121068B2
PURPOSE: To provide the photographic lens which has various aberrations excellently compensated and is used for such a microscope that its objective and ocular have curvature of field compensated independently of each other. CONSTITUTION...  
JP2000284172A
To obtain a color image read lens with high resolution which while correcting the on-axis chromatic aberration effective and sufficiently, can main tain the excellency of other various aberrations by making a lens of five-group constitut...  

Matches 801 - 850 out of 3,829