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Patent Searching and Data


Matches 901 - 950 out of 3,779

Document Document Title
JPH11167061A
To provide a photographing optical system capable of improving chromatic aberration and obtaining high image quality, reduced in the number of composing lenses, small in size, light in weight, and low in cost. This photographing optical ...  
JPH11160615A
To provide a large-diameter lens obtained by excellently correcting spherical aberration and various aberration even in the case a large diameter lens with a F-number 1.2. This lens is constituted of a front-group lens having positive re...  
JP2595552Y2  
JP2895150B2  
JPH11133312A
To make an optical system have the function of a telescope to observe an infinite object and also the function of a microscope to enlarge and observe a minute object in a short distance by providing three lens groups and moving 1st and 2...  
JP2893046B2  
JPH11125767A
To obtain the small-sized, low-cost photographic lens system which has high performance, long back focus, and excellent telecentricity. This system is equipped with a 1st lens group 10 with negative refracting power, a stop S, and a 2nd ...  
JPH11119092A
To obtain an inner focusing optical system provided with vibration- proof where a still picture is obtained by optically correcting the blurring of a photographic image when the optical system is vibrated. This optical system is provided...  
JPH11120810A
To emit the illuminating light in the front direction in a central part and in the central part direction on the side surface side and avoid reduction in a luminance level on the side surface side through effective use of emitting light ...  
JPH11119091A
To accomplish an inexpensive variable power optical system with less transverse chromatic aberration by using a specified aspherical lens and an abnormality dispersing glass for a projection variable power optical system equipped with th...  
JP2887004B2  
JPH11109221A
To effectively compensate axial chromatic aberration in a low magnification lens and to attain high performance in a wide wavelength area by specifying a distance between lenses, the radius of curvature of a concave surface and balance b...  
JPH11109222A
To excellently compensate aberration by providing a 2nd diffraction surface arranged nearer to an image surface side than a 1st diffraction surface and having negative refractive power and constituting the respective diffraction surfaces...  
JPH11101938A
To provide a photographic lens which has relatively little fluctuation in aberration associated with change in magnification in a case of focusing according to ranges of an object, and is capable of providing an excellent focusing perfor...  
JPH11101937A
To easily cope with a change in the image pickup size, etc., of a video camera to be used by disposing a front group consisting of a convex lens group and a rear group consisting of a convex lens group in this order from a specimen side ...  
JP2881744B2  
JP2881926B2  
JPH1195130A
To enlarge an apparent visual field and eye relief and to correct the original aberration of an eyepiece and the aberration of a pupil by forming an intermediate image in an optical path between a 1st and a 2nd lens groups by an objectiv...  
JP2879458B2  
JP11084230A
To provide a wide-angle lend small in size, light in weight, low in cost and also compensative in various aberrations with simple constitution such as four groups and five lenses. This lens is composed of four groups and five lenses, tha...  
JP11084229A
To obtain a single focus lens small in size, reduced in the number of lenses, low in cost and excellent in performance while securing sufficient back focus by using a diffraction optical element. This single focus lens is constituted of ...  
JP2873912B2  
JPH1179007A
To shorten the longitudinal length of each crawler and prevent the vehicle body from sinking in the ground. This semi-crawler type tractor has steerable front wheels and crawlers 4 extended in a substantial triangle including the vertex ...  
JP2871021B2  
JPH1172704A
To provide a compact zoom lens having high magnification. Relating to a zoom lens composed, in order from the object side, of a first group Gr1 having a negative power, a second group Gr2 having a positive power, a third group Gr3 having...  
JP2867375B2  
JP11064727A
To compose a lens system of lenses having shape easy in machining, to restrain distortion aberration and chromatic aberration to the comparatively minimum and to obtain excellent optical performance by arranging a lens group having negat...  
JPH1151880A
To provide a moisture containing amount measuring unit capable of highly precisely measuring an amount of moisture containing in an inner lining refractory stuck on the surface of the iron plate of an iron melting vessel. With regard to ...  
JPH1155309A
To efficiently receive an electronic mail at the time of receiving the same electronic mail by plural electronic mail clients used by the same user from an electronic mail server. In this mail system, the same electronic mail is received...  
JPH1152227A
To provide a photographing lens having a sufficient back focas and telecentric property and obtaining good image forming performance by a small number of component lenses. This photographing lens is composed and arrayed in order from an ...  
JPH1155310A
To quickly and accurately retransmit an electronic mail by storing the received electronic mail and also the address of the mail originator and transmitting automatically an electronic mail to ask the mail originator to retransmit the st...  
JP2860176B2  
JP2859418B2  
JP11044839A
To obtain a rear diaphragm type photographing lens having good optical performance over the entire image plane while realizing the miniaturization and the wide angle of an entire lens system. This lens is provided with a 1st lens L1 bein...  
JP11044801A
To provide a photographing lens capable of realizing the reduction of cost without deteriorating lens performance. This photographing lens 40 has positive refractive power and is positioned and held on the object side of a diaphragm aper...  
JPH1134412A
To provide a printing apparatus capable of well cooling a printed object to be printed even when the size of a cooling platen is not enlarged. A temp. sensor 38 as a detection means for detecting the temp. of a cooling platen 23 is provi...  
JPH1130118A
To improve fuel consumption of an engine by optimally controlling the reducing agent supplying amount and the timing so that the decrease of NOx may be performed at high efficiency. A device is provided with an NOx purifying catalyst 18,...  
JPH1128024A
To provide a plant carpet for a structural body of a plant for transplantation comprising thin and lightweight soil, having tensile strength, capable of being transplanted on a rooftop, etc., without requiring a reinforcing work, having ...  
JP11023959A
To obtain a compact photographing lens whose front lens diameter is small and which has high optical performance over an entire image plane. A positive meniscus 1st lens L1 whose convex surface is faced to an object, a negative 2nd lens ...  
JPH1123207A
To make the assemblage of a rotational displacement detector easier. A rubber bush 37 which controls relative rotation between the input shaft 35 of a potentiometer 21 which detects the angle of rotation of the king pin 15 and the pin 15...  
JPH1124809A
To provide an infrared communication device of an information processor which never deteriorates the operability and the freedom of placement for its peripheral device and also never produces electrical noises for the transfer of informa...  
JPH1116613A
To provide a connecting part that is electrically stable and has excellent mechanical characteristics by placing a split band conductor and an insulating film in a slot with one surface side held down by a press-in terminal. On one face ...  
JP2846821B2  
JP2836691B2  
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 ...  
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...  
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...  
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  

Matches 901 - 950 out of 3,779