| Document |
Document Title |
|
JPH0795141B2 |
|
|
JPH0792542B2 |
In a triplet type objective for a compact lens shutter camera with a diaphragm arranged behind the lens system, the first lens element is formed of glass and the second and third lens elements are formed of plastic, so that it is advanta...
|
|
JPH07253533A |
PURPOSE: To provide a compact objective lens of inner focus type having excel lent image forming performance at the time of focusing at a near distance. CONSTITUTION: An objective lens of inner focus type is provided, in order from the o...
|
|
JPH07253536A |
PURPOSE: To provide the excellent quality of picture whose aberrations including distortion aberration and the curvature of field are compensated while ensuring a working space for wiping out dust stuck to a monitor due to static electri...
|
|
JPH07253538A |
PURPOSE: To apply the system to a photographic optical system using two and more solid-state image pickup elements, to lengthen a back focal length, to reduce the angle of off-axis principal ray, to make the system high performance and t...
|
|
JPH07253537A |
PURPOSE: To apply the system to a photographic optical system using plural solid-state image pickup elements, to lengthen a back focal length and to reduce the angle of off-axis principal ray by comprising a condenser lens group having a...
|
|
JPH07239439A |
PURPOSE: To obtain a lens for reading an original which can be made compact because the constituting number of lenses is small and which is constituted so that a wide viewing angle or high performance can be easily realized by using a gr...
|
|
JPH07218976A |
PURPOSE: To exactly decide the effective diameter of an optical system by deciding the effective diameter based on object information in an extreme state to be handled by that optical system. CONSTITUTION: The main part of an effective d...
|
|
JPH07209578A |
PURPOSE: To easily and effectively cut off ghost light without increasing the cost by providing a stop which is rectangular or in a similar shape behind a meniscus lens. CONSTITUTION: A 1st lens L1 is a convex meniscus lens which is conv...
|
|
JPH0774857B2 |
|
|
JPH0741811U |
[Purpose] The projector-type headlights can be improved to switch between a light distribution pattern suitable for driving on general roads and a light distribution pattern suitable for driving on highways. Provided is a projector type ...
|
|
JPH07181380A |
PURPOSE: To improve a conventional optical system for front diaphragm and provide a lens system substantially having zero distortion aberration, and sufficiently ensuring the back focus. CONSTITUTION: A lens system for front diaphragm is...
|
|
JPH07181386A |
PURPOSE: To provide a small-sized, lightweight, and high performance zoom lens using refractive index distribution type lens having a refractive index change in the optical axial direction. CONSTITUTION: This zoom lens has, in order from...
|
|
JPH07181373A |
PURPOSE: To provide a gauss type photographic lens in which spherical aberration and sagital coma are satisfactorily corrected with a little lens number. CONSTITUTION: In a gauss type photographic lens having a front group GF of positive...
|
|
JPH07181390A |
PURPOSE: To provide a compact macro-lens having a relatively small delivering quantity in focusing, and capable of performing a high power photographing having a photographing distance to some degree. CONSTITUTION: This lens is formed of...
|
|
JPH07181385A |
PURPOSE: To provide a small-sized, lightweight, and high performance zoom lens using a refractive index distribution type lens having a refractive index change in the optical axial direction. CONSTITUTION: This zoom lens has, in order fr...
|
|
JPH07174964A |
PURPOSE: To obtain a compact image-forming lens constituted of a small number of component lenses, easily to be made to have a larger aperture, and having excellent performance by constituting the lens of two groups of two lenses being p...
|
|
JPH07168095A |
PURPOSE: To secure a small lens system, being high performance at a wide field angle and bright, with a triplet lens of 3-group/three sheet constitution, by forming at least one surface of both second and third lenses into aspheric surfa...
|
|
JPH0760212B2 |
A spherical recess is provided to one end wall of a first planar lens and the opposite end walls of a second planar lens, the first planar lens having a thicknesswise index distribution in the vicinity of the one end wall whereas the sec...
|
|
JPH0760213B2 |
|
|
JPH0760224B2 |
|
|
JPH07159697A |
PURPOSE: To provide a microscopic objective lens which is as bright as ≥0.2 in NA, is as small in the number of lens elements as about three elements and is capable of well correcting aberrations by having one element of specific radia...
|
|
JPH07146436A |
PURPOSE: To remove effectively flare light in a light emitting wave length of an LED, and reduce crosstalk when it is arrayed by arranging a dye layer on a side surface so as to absorb light having a specific wave length. CONSTITUTION: I...
|
|
JPH07146435A |
PURPOSE: To provide a radial direction refractive index distribution type optical relay for excessively correcting a color aberration in an axial direction and the manufacturing method. CONSTITUTION: This relay 35 is provided with at lea...
|
|
JPH07140387A |
PURPOSE: To make the dust and foreign matter in the finder hardly visible while having a variable power ratio by moving a second lens group to change magnification and satisfying specific conditions. CONSTITUTION: This finder has an obje...
|
|
JPH0750202B2 |
|
|
JPH0750244B2 |
|
|
JPH0750243B2 |
|
|
JPH0750242B2 |
A refractive index distribution type meniscus-shaped single lens characterized in that it has a refractive index distribution in which the refractive index decreases along the optic axis thereof from a convex surface to a concave surface...
|
|
JPH0750247B2 |
|
|
JPH07128571A |
PURPOSE: To reduce blur quantity by a small quantity of rotating operation of a focus ring when zooming is performed to a telephotograph side after focus adjustment is performed at the wide-angle end by making a control circuit have a fu...
|
|
JPH0746168B2 |
|
|
JPH0743565B2 |
|
|
JPH07120671A |
PURPOSE: To provide a small-sized wide angle lens having the number of lens of as few as five, minimized in the change of lens performance by temperature change, and having a large aperture and a wide field angle such as F2.8 and about 7...
|
|
JPH07104183A |
PURPOSE: To obtain the Triplet lens having a high performance and a telephoto ratio of about 1.05, and a wide view angle, and being bright and small in size. CONSTITUTION: This lens is constituted of a first lens L1 having a meniscus sha...
|
|
JPH07104184A |
PURPOSE: To provide the photographic lens whose performance is not deteriorated, even if its aperture is enlarged by a small number of lens pieces to the utmost. CONSTITUTION: In the photographic lens in which a meniscus concave lens 1 w...
|
|
JPH07104179A |
PURPOSE: To obtain the Tessar lens whose view angle is such a wide view angle as about 60-65 degrees, and which is bright by an F-number of about 2.8, is small in size and has high performance. CONSTITUTION: This Tessar lens consists of ...
|
|
JPH0734057B2 |
|
|
JPH0731305B2 |
|
|
JPH0731304B2 |
|
|
JPH0731306B2 |
|
|
JPH0793292A |
PURPOSE: To efficiently perform optimizing arithmetic at all times by deciding the suitability of an applied parameter difference and resetting the amount at any suitable value when it is not suitable. CONSTITUTION: Data to be the target...
|
|
JPH0793291A |
PURPOSE: To improve the efficiency of processing by setting an initial value for efficiently searching an optimum solution with the small number of times of repetition. CONSTITUTION: Data to be the target of evaluation are inputted (S201...
|
|
JPH0792384A |
PURPOSE: To prevent the occurrence of errors and mistakes on a numerical calculation and to improve efficiency in calculating, in an optimizing calculation used for an optical system(lens) design. CONSTITUTION: This method is a descendin...
|
|
JPH0793293A |
PURPOSE: To efficiently perform optimizing arithmetic at all times by deciding the suitability of an applied variable difference and resetting the amount at any suitable value when it is not suitable. CONSTITUTION: Data to be the target ...
|
|
JPH0784182A |
PURPOSE: To make the lens compact by reducing the diameter and the total length of the lens while keeping bright and excellent performance by incorporating a meniscus lens and bi-concave lens between two positive lenses. CONSTITUTION: A ...
|
|
JPH0727113B2 |
|
|
JPH0727112B2 |
|
|
JPH0727116B2 |
|
|
JPH0727114B2 |
|
