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| Number | Title | Issue Date |
| 7027232 | Optical cross-connect switch with telecentric lens and multi-surface optical element In the beam path of an Optical Cross Connect between the front face of a fiber block and a moveable mirror array are placed a telecentric lens and multi-surface optical element. The lens is placed adjacent the front face with a front focal plane coinciding with the ... | 04/11/2006 |
| 6989942 | Zoom lens and photographing apparatus having the same A zoom lens includes, in order from an object side to an image side, a first lens unit of positive refractive power, a second lens unit of negative refractive power arranged to move during variation of magnification, a third lens unit arranged to compensate for shif... | 01/24/2006 |
| 6924941 | Optical apparatus An optical apparatus is disclosed which comprises an optical system provided with a zoom lens for performing zooming by moving along the optical axis and a focus lens for performing correction and focusing at the time of zooming, an imaging device for imaging an opt... | 08/02/2005 |
| 6921164 | Underwater viewing lens A viewing lens that is divided into at least three sections such that a wearer can see through a center section with both eyes, and can see through a lateral section only with the eye immediately adjacent to that section. ... | 07/26/2005 |
| 6922290 | Zoom lens system A zoom lens system includes a positive first lens group, a negative second lens group. Zooming is performed by moving the first and second lens groups in the optical axis direction thereof. The most image-side lens element of the positive first lens group includes a... | 07/26/2005 |
| 6917476 | Zoom lens system A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group. Upon zooming from the short to long focal length extremities, the distance between the first and second lens groups decreases, and the distance be... | 07/12/2005 |
| 6906868 | Zoom lens system A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group. The negative first lens group includes a negative meniscus lens element having the convex surface facing toward the object, and the positive third... | 06/14/2005 |
| 6894843 | Optical apparatus for a line scanner system with reduced optical total track An optical apparatus for a line scanner system comprises a main lens group, an aspherical field flattener lens and a line sensor arranged sequentially along the same optical axis. The main lens group consists of four rotationally symmetrical lenses for refracting an... | 05/17/2005 |
| 6891680 | Zoom lens system The object is to provide an afocal zoom lens system with the f-number of about 4 or less capable of performing vibration reduction correction. The system includes, in order from an object, a first group G1 being positive, a second group G2 being negati... | 05/10/2005 |
| 6873476 | Microlithographic reduction projection catadioptric objective The invention concerns a microlithographic reduction projection catadioptric objective having an even number greater than two of curved mirrors, being devoid of planar folding mirrors and featuring an unobscured aperture. The objective has a plurality of optical ele... | 03/29/2005 |
| 6873471 | Eyepiece for viewing a flat image An eyepiece (2) for viewing a flat image, which eyepiece (2) has a wide field of view and which eyepiece (2) comprises a cemented doublet of reflecting and refracting optical components, the reflecting and refracting optical components being suc... | 03/29/2005 |
| 6867925 | Zoom lens A zoom lens to form an image of an object with variable magnification between a shortest focal length and a longest focal length, is provided with a first lens group having a positive refracting power; a second lens group positioned closer to the image than the firs... | 03/15/2005 |
| 6867927 | Transparent surface formed complex polymer lenses Disclosed is a transparent polymeric film having a top and bottom surface comprising a plurality of complex lenses on at least one surface thereof and containing as its primary ingredient a polymer sufficient to impart to the film a light transmission of at least 92... | 03/15/2005 |
| 6859331 | Objective An objective has lens units, each of which is constructed with single lenses, and a numerical aperture of 0.7 or more, comprising, in order from the image side, a first lens unit including a positive meniscus lens with a convex surface facing the image side, at leas... | 02/22/2005 |
| 6856466 | Multiple imaging system A series of optical elements is used to produce multiple simultaneous adjoining images on a single image plane. A first, intermediate, image is produced using the first telecentric imaging lens. This intermediate image is produced at a plane coincident with an adjus... | 02/15/2005 |
| 6842298 | Broad band DUV, VUV long-working distance catadioptric imaging system A high performance objective having very small central obscuration, an external pupil for apertureing and Fourier filtering, loose manufacturing tolerances, large numerical aperture, long working distance, and a large field of view is presented. The objective is pre... | 01/11/2005 |
| 6833964 | Zoom lens system The present invention provides a zoom lens system suitable for an image gathering system using a solid-state imaging device, having a zoom ratio of about three, a small total lens length, and superb optical performance. According to one aspect, in order from the obj... | 12/21/2004 |
| 6831792 | Objective lens, combination of objective lenses, and method for adjusting optical system using objective lens The reference objective lens includes an objective lens and an index member provided with an index that indicates a reference position. The index member is disposed on the front-side focal position of the objective lens or in its vicinity. Upon the reference objecti... | 12/14/2004 |
| 6817713 | Spectacle lens manufacturing method and spectacle lens supply system The difference in optical performance, such as astigmatism, the radius of curvature of a first surface, etc., of left and right lenses is kept at or below a specific level, and the difference in optical performance and the radius of curvature of the first surfaces b... | 11/16/2004 |
| 6816326 | Optical system with compensated spatial dispersion The optical system has a first optical element (11,17, 19, 26) and a second optical element (12, 18, 20, 27) having respective plane surfaces and cubic crystal structures, which are arranged next to each other along an optic axis (10) so that on... | 11/09/2004 |
| 6813090 | Zoom lens system A zoom lens system includes a positive first lens group, a positive second lens group, and a negative third lens group. Zooming is performed by moving the first, second and third lens groups in the optical axis direction. The positive first lens group is constituted... | 11/02/2004 |
| 6813088 | Projection optical system and projection exposure device which uses same A projection optical system that is telecentric or very nearly telecentric on both sides is formed of four positive lens groups with a central diaphragm for achieving at least very nearly unity magnification. The second and third lens groups are movable along the op... | 11/02/2004 |
| 6809883 | Autofocus system An autofocus system for an imaging device that includes an image detecting element for image production at a focused image plane of an adjustable focus imaging lens that also includes four image detecting elements for focus detection arranged in pairs that are equid... | 10/26/2004 |
| 6809888 | Apparatus and methods for thermal reduction of optical distortion Apparatus and methods for reducing optical distortion in an optical system by thermal means are disclosed. The apparatus includes a heating/cooling system spaced apart from and in thermal communication with an internally reflecting surface of a refractive element in... | 10/26/2004 |
| 6793339 | Coated sunglass lens An optical lens including an optically clear lens element; and a light absorbing coating on a surface of the lens that attenuates transmitted light; has a coloured or colourless reflection as seen from the front of the sunglass lens; and is anti-reflective as seen f... | 09/21/2004 |
| 6785058 | Zoom lens system A zoom lens system includes a positive first lens group and a negative second lens group which move in an optical axis direction upon zooming. The positive first lens group includes a positive first lens element having a convex surface on the object side, a negative... | 08/31/2004 |
| 6785055 | Zoom lens system A zoom lens system has, in order from an enlargement side, a first lens unit having negative optical power, a second lens unit having positive optical power, a third lens unit having positive optical power, a fourth lens unit having negative optical power, including... | 08/31/2004 |
| 6781769 | Small-sized three-unit zoom lens A three-unit zoom lens includes, in order from the object side, the first lens unit with positive refracting power, the second lens unit with positive refracting power, and the third lens unit with negative refracting power. When the magnification of the zoom lens i... | 08/24/2004 |
| 6776486 | Progressive addition power lens A system and method for designing a progressive lens. Mean power is specified at points distributed over the entire surface of the lens and lens height is specified around the edge of the lens. Lens height is determined at the points consistent with the specified me... | 08/17/2004 |
| 6771431 | Zoom lens and camera equipped with zoom lens The disclosed zoom lens includes a first lens unit having a negative optical power, a second lens unit having a positive optical power, and a third lens unit having a positive optical power in order from an object side to an image side. The zoom lens has a shorter i... | 08/03/2004 |
| 6768595 | Five-group zoom lens and projection display device including it A five-group zoom lens is formed of, in order from the enlarging side of the zoom lens, a negative first lens group that is movable for focusing and that is stationary during zooming, a positive second lens group, a positive third lens group, a negative fourth lens ... | 07/27/2004 |
| 6762889 | Compact telephoto lens for grating scale position measuring system A telephoto lens for a grating scale measurement system includes a pair of aspheric lenses that together operate at finite conjugates with minimal spherical aberrations. Identical aspheric lenses provide a subsystem with a magnification of 1×, and a magnifying syst... | 07/13/2004 |
| 6747810 | Single focus lens having short overall length A single focus lens is disclosed that is formed of only four lens components, which are arranged in positive, negative, positive and relatively weak positive or negative refractive power order from the object side, with a stop arranged between the first and second l... | 06/08/2004 |
| 6744576 | Recognition of the maximum position of a revolving dial or slide on microscopes A method for detecting the maximum quantity of possible positions of an exchangeable nosepiece or slide in a microscope system is disclosed. The method comprises the steps of: starting from an initial position which corresponds to a first position, adjusting the max... | 06/01/2004 |
| 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 |
| 6741402 | Objective lens for optical head A single element objective lens for an optical disc drive converges a laser beam, which is emitted by a laser source, on a data recording surface of an optical disc through a protective layer of the optical disc. One surface of the objective lens is divided into a c... | 05/25/2004 |
| 6735020 | Zoom lens and image pickup apparatus The present invention provides a zoom lens suitable for an image pickup system using a solid-state image pickup element. In detail, the zoom lens disclosed in the present invention includes three lens units having negative, positive, and positive optical power in or... | 05/11/2004 |
| 6724542 | Monolithic optical device for light transmission, and multi-channel optical system using same An integrated light-transmission optical module for a safetyoptoelectronic barrier, comprises a condenser element having a first lens, and an objective having a second lens which are located respectively at a first end and a second end. The module comprises a single... | 04/20/2004 |
| 6717746 | Catadioptric reduction lens A catadioptric projection lens configured for imaging a pattern arranged in an object plane (2) onto an image plane (4) while creating a single, real, intermediate image (3) has a catadioptric first section (5) having a concave mirror ( | 04/06/2004 |
| 6717745 | Optical systems and methods employing rotating cylindrical lenses/mirrors An optical system includes a first cylindrical optical element (lens or mirror), and a second cylindrical optical element positioned in a round-spot plane following the first cylindrical optical element. At least one of the cylindrical optical elements is rotatable ... | 04/06/2004 |
