Class 359/790 - With third component biconvex

Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein the third convergent component has
No. of patents: 31
Last issue date: 04/21/2009

Browse patents
Browse applications

Number	Title	Issue Date
7522354	Enhancing a field sequential color palette in an optical display A circuit for implementing a registration-free, contiguous conductive plane. A circuit may include a plurality of conductive structures in a first plane. The circuit may further include a contiguous conductive equipotential surface in a second plane parallel to the ...	04/21/2009
7236314	Compact lens system A compact lens system includes, in succession from an object side to an image side, an aspheric first lens element (1) having a positive power, an aperture stop (4), an aspheric second lens element (2) having a negative power, and a third lens e...	06/26/2007
7086790	Automatic focusing lens assembly in a camera A lens assembly in a camera includes a first meniscus lens (10) and a second meniscus lens (11) respectively having a first radius of curvature (A,A′) and a second radius of curvature (B,B′) larger than that of the first radius of curvature A,A′)...	08/08/2006
7028595	Precision double-sided aspheric element A precision optical element is described, such as is used in thermal imaging systems in the infra-red, manufactured by means of single point machining, with both of its surfaces having an aspheric form, with or without the addition of a diffractive optics pattern. T...	04/18/2006
7006305	Image forming optical system and electronic instrument using the same An image forming optical system comprises, in order from an object side, a first positive meniscus lens having a convex surface directed toward an object side, an aperture stop, a second positive meniscus lens having a convex surface directed toward the object side ...	02/28/2006
6927925	Imaging optical system An imaging optical system comprising, in order from the object side, a first positive meniscus lens having a convex surface on the object side, an aperture stop, a second negative meniscus lens having a convex surface on the image side, and a third positive lens hav...	08/09/2005
6804067	Single focus lens A single focus lens is disclosed that is formed of only three lens components. In order from the object side, these are: a first lens component that has positive refractive power and includes a first lens element; an aperture diaphragm; a second lens component that ...	10/12/2004
6741403	Hybrid lens system A lens system includes a plastic positive lens, a plastic negative lens and a glass positive lens. The plastic lenses are made to be meniscus lenses and an aspheric surface and a diffractive surface are respectively mounted onto the plastic lenses so as to have bett...	05/25/2004
6504655	Wide converter lens The object of the present invention is to provide a wide converter lens capable of obtaining an angle of view of about 80° or over and having small appearance of distortion. According to one aspect, a wide converter lens for using by attaching to an obje...	01/07/2003
6466377	Image pickup lens system An image pickup lens system according to the present invention includes a diaphragm, a first lens which has a convex fact formed on the side of an image surface in the vicinity of an optical axis and which has a positive power and radii of curvature at a ...	10/15/2002
6259570	Image readout lens An image readout lens comprises, successively from the object side, a first lens L1 made of a positive meniscus lens having a convex surface directed onto the object side, a second lens L2 made of a biconcave lens having a surface wi...	07/10/2001
6147816	Image-reading lens An image-reading lens is formed of a two lens elements of meniscus shape, one with its convex surface on the most object-side of the image-reading lens and one with its convex surface on the most image-side of the image-reading lens. An intermediate lens ...	11/14/2000
6111704	Readout lens In a three-sheet image readout lens, predetermined expressions are satisfied, so as to yield a bright lens system which can favorably correct each kind of aberration, while attaining a smaller size and a lighter weight. The lens system is constituted by, ...	08/29/2000
5754347	Photographic lens system A photographic lens system for compact cameras comprising in order from the object side: a first positive meniscus lens element having a convex surface on the object side; a second biconcave lens element; a third biconvex lens element; and a stop, wherein...	05/19/1998
5715098	Lens system for a head separated type charge coupled device camera Disclosed is a telephoto-type lens system of a head separated charge coupled device (CCD) camera, which includes a first lens group having a positive focal length, a second lens group having a negative focal length, and a third lens group. The first lens ...	02/03/1998
5615051	Bright triplet The invention provides a high-performance, bright and compact triplet that has a zoom ratio of about 1.05 with an wide field angle, said triplet comprising, in order from the object side, a first lens L1 consisting of a positive single lens of glass in a ...	03/25/1997
5606461	Behind stop triplet lens A triplet lens using plastic lens elements is disclosed. The triplet lens includes, in order from the object side, a glass lens element that is positively meniscus having the convex surface on the object side, a plastic lens element formed of polycarbonat...	02/25/1997
5589989	Compact objective lens system A compact objective lens with a diaphragm arranged behind the lens system suitable for use in very compact photographic cameras. The objective lens comprises a plurality of components arranged in a triplet or a triplet type configuration and is capable of...	12/31/1996
5572369	Triplet-type lens for use in a compact photographic camera A compact objective lens system with a diaphragm arranged in front of or preferably behind the lens system and suitable for use in compact photographic cameras. The objective lens comprises a plurality of components arranged in a triplet-type configuratio...	11/05/1996
5521761	Real image mode finder optical system with high magnification A real image mode finder optical system includes an objective system having a positive refracting power as a whole, an image erecting system for erecting an image, and an eyepiece system having a positive refracting power. The objective system has a menis...	05/28/1996
5155632	Copying lens system A copying lens system of a three-unit/three-element composition that can be made from relatively inexpensive optical materials and which exhibits satisfactory performance at copying ratios ranging from about 0.5 to 2.0. The lens system includes, in order ...	10/13/1992
4828375	Lens for scanning devices It is a lens comprising three elements for a scanning device; the lens is particularly for providing a linear scanning. A beam enters the lens from its front focus by rotating a constant angular velocity, will become a beam in parallel with the axis of th...	05/09/1989
4787724	Triplet type objective with a diaphragm arranged behind the lens system 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 advantageous in manufactu...	11/29/1988
4542961	Triplet type objective The disclosed triplet type objective includes from front to rear, a first lens of positive power, a second lens of negative power and a third lens of positive power followed by a diaphragm, with at least one of the refracting surfaces of the second and th...	09/24/1985
4531815	Objective lens An objective lens has a positive first lens disposed at a position most distant from an object surface, a meniscus-shaped second lens disposed on the object side of the first lens and having its convex surface facing the object side, and a positive third ...	07/30/1985
4385809	Copying lens A copying lens system of three lenses is provided in which the total length is less than 0.15f with aberration fully corrected. This is brought about by a three-lens system in which the first lens is a positive meniscus whose convex surface faces the obje...	05/31/1983
4234243	Reducing lens system A reducing lens system consisting of three lens components, having an aperture ratio of F/8 with the capability of providing a good image over the entire image surface, and a vignetting factor of 100% capable of maintaining brightness of the image to the ...	11/18/1980
4190324	Achromatic objective lens An achromatic objective lens having an aperture ratio of about 1:12 and a viewing angle of about &#b1;1° for use in an astronomical telescope is disclosed. The lens uses conventionally available optical materials matched to produce optimum compensation o...	02/26/1980
4139266	Medium magnification objective for video disks A medium magnification objective for video disks comprising three or four single lenses for which the number of lenses constituting the objective is small, the working distance is large and flatness of image is high....	02/13/1979
4050789	Tracking lens system for solar collectors and skylights A tracking lens system for solar collectors or skylights comprises a first array of condensing lenses, a movable array of diverging lenses, and a second array of condensing lenses. By moving the array of diverging lenses, sunlight incident from any small ...	09/27/1977
3967884	Three element objective lens An objective lens comprising a front positive meniscus element, a middle negative biconcave element and a rear positive biconvex element. Improved optical performance at a relative aperture of f/1.70 is achieved by the incorporation of an asphere on the r...	07/06/1976

PatentStorm

Quotables

PatentStorm News

Class 359/790 - With third component biconvex