Class 359/736 - Two components

Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein the lens comprises two sections
No. of patents: 24
Last issue date: 04/19/2011

Number	Title	Issue Date
7929219	Optical element, optical system and endoscope using the same A flux of light entering a transparent medium proceeds along a side view optical path by way of a first transmissive surface so as to be reflected to the side opposite to an image plane by a first reflective surface and then to the image plane side by a second refle...	04/19/2011
7746566	Observation optical system An observation optical system has a negative lens unit including a cemented lens, arranged at the most object-side position; an annular reflecting mirror placed on the image side of the negative lens unit, with a reflecting surface facing the image side; and an imag...	06/29/2010
7405887	Zoom lens and imaging device using zoom lens The present invention is directed to a zoom lens used for image pick-up optical system of digital still camera, or video camera, and is composed, in order from the object side, of a first group GR1 including a reflection member for bending or folding the opti...	07/29/2008
7333416	Optical pickup apparatus for recording or reproducing information for an optical information recording medium and objective lens for optical pickup apparatus An objective lens of an optical pickup apparatus converges a divergent light flux onto an information recording surface. The following conditional formula is satisfied: \|δSA1/δU\|·\|δU\|+\|δSA2/δT\|·\|δT\|≦0.07...	02/19/2008
7170687	Projection lens system and projector A projection lens system of the present invention projects projection light from a light modulator onto a screen and includes a first lens group disposed closest to the screen, the first lens group including a first meniscus lens with negative refractive power that ...	01/30/2007
7016114	Diffraction optical device and optical system including same A diffraction optical device includes a first diffraction element and a second diffraction element arranged adjacent to each other. One of the first diffraction element and the second diffraction element has a positive power, and the other has a negative power. The ...	03/21/2006
6980375	Objective lens system An objective lens system consisting of a first lens unit having a negative refractive power and a second lens unit having a positive refractive power wherein the first lens unit or the second lens unit comprises at least one radial type gradient index lens element w...	12/27/2005
6515809	Fixed focal length lens system A lens system has the first and second lens components from the object side. The first lens component has a negative optical power. The second lens component has a positive optical power. The lens system fulfills the conditions: 0.0	02/04/2003
5999334	Fixed focal length lens system A lens system has the first and second lens components from the object side. The first lens component has a negative optical power. The second lens component has a positive optical power. The lens system fulfills the conditions: 0.0	12/07/1999
5734500	Binocular with extended monocular field A wide field monocular is provided which is essentially a wide field virtual telescope. Two of these monoculars can be placed side-by-side to achieve a binocular with an extended monocular field. Also for such binoculars with objective lenses larger than ...	03/31/1998
5712735	Catadioptric reduction projection optical system A catadioptric reduction projection optical system having a first lens unit having negative refractive power and widening a light beam from a reticle, a prism type beam splitter for transmitting therethrough a light beam from the first lens unit, a concav...	01/27/1998
5673135	Scanning projection optical device A scanning projection optical device is disclosed which can be constructed using relatively small optical members, which employs a catadioptric system that is advantageous to attain a high NA, and which has arc-shaped object and image regions located out ...	09/30/1997
5668672	Catadioptric system and exposure apparatus having the same This invention relates to a catadioptric optical system in which, a large numerical aperture is attained on the image side and, while securing a sufficient working distance, the size of the beam splitter is reduced, thereby attaining a resolution of a qua...	09/16/1997
5552938	Projection device for projecting an original image onto a screen Disclosed is a projection optical system for projecting an original image onto a screen, including a projection lens comprising, in succession from the screen side, a first lens unit having positive refractive power, and a second lens unit having positive...	09/03/1996
5448416	Wide-field exposure optical system A wide-field exposure optical system in which the projection is performed by scanning an object to be projected with a predetermined scan width. The optical system comprises an illuminating section for illuminating the object to be projected in a circular...	09/05/1995
5278695	Magnifier An apparatus is provided for magnifying the image of distant objects which has the unique feature that, unlike the Galilean telescope, the magnification is largely determined by how far the eye is located from the apparatus. Furthermore, unlike the Loupe,...	01/11/1994
5159495	Graded index optical elements and catadioptric optical systems The present invention relates to an optical element and catadioptric optical systems using the optical element. The optical element has a spherical surface with a reflective layer formed on at least a portion of the surface, and is formed of a radiant ene...	10/27/1992
4783156	Optical system for altering the direction of the visual field in endoscopes In order to make it possible to observe the image of an object as an erect (correct) image and also to construct the entire device in a compact size, the optical system for altering the direction of the visual field for use in endoscopes comprises visual ...	11/08/1988
4664515	Optical system of a radiation thermometer The present invention relates to an optical system of a radiation thermometer in which the measuring optical system and the finder optical system can be focused. The central portion of the sub-mirror in Cassegrainian type optical system is used as a finde...	05/12/1987
4593984	Viewfinder lens system An improved eyepiece for a viewfinder of a single lens reflex camera is provided. This improved eyepiece includes a negative first lens element and a positive second lens element with an air space formed between the first and second lens elements. The sec...	06/10/1986
4578710	Lens system for projection television A projection television receiver having a more compact cabinet size due to an improved projection lens system. The projection lens system includes a plano-concave lens and a plano-convex lens having optical axes forming an angle in a range of 170° to 190...	03/25/1986
4557591	Photographic printing apparatus Disclosed herein is a photographic printing apparatus including at least one of image-rotating lenses 25 and 26 which enables the production of prints of the same size from photographic films both of full size and half size by a 45-degree rotation of said...	12/10/1985
4437750	Adjustable diopter type finder optical system An adjustable diopter type finder optical system comprising an eyepiece comprising a first lens component having negative refractive power and a second lens component having positive refractive power, the finder optical system being arranged to make diopt...	03/20/1984
4015896	Reflecting-lens objective An objective particularly designed for copying machines consists of a biconvex lens air-spaced from a negative-meniscus lens with silvered convex surface, known as a Mangin mirror....	04/05/1977

PatentStorm

Quotables

PatentStorm News

Class 359/736 - Two components