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| Number | Title | Issue Date |
| 7869125 | Multi-magnification viewing and aiming scope A multi-magnification viewing and aiming scope includes a first imaging group including an objective lens lying on the optical path and an eyepiece lens lying on the optical path. The first imaging group forms a first image having a first magnification on the optica... | 01/11/2011 |
| 7684114 | Scope with improved magnification system Various embodiments described herein include a scope for a firearm having a large range of zoom. The scope comprising a movable zoom selector for adjusting magnification of an image viewed through the scope. The scope further includes an objective, an ocular, and an... | 03/23/2010 |
| 7471451 | Multiple field of view optical system Optical systems, including apparatus and methods, for obtaining images, particularly with multiple fields of view. These systems may utilize a plurality of optical components with different optical axes, where the optical axes may be selectively rotated into alignme... | 12/30/2008 |
| 6909541 | Device capable of exchanging image projection direction A device capable of exchanging image projection directions includes an inner body provided with an internal reflector having adjustable angles and a horizontal light permeation aperture; an accommodation tube formed at the rear of the inner body and an upper light p... | 06/21/2005 |
| 6577449 | Telescopic zoom lens system A telescopic zoom lens system has a minimum magnification thereof is more than 2, and includes a positive objective lens group, and a positive eyepiece lens group, in this order from the object. Further, a zooming lens group which is made moveable along t... | 06/10/2003 |
| 6424462 | Binocular and method for manufacturing the same A mounting base which includes an object side portion, an eyepiece side portion, and a connecting portion. The connecting portion connects the side portions, and the side portions are parallel. A pair of first mounting holes are formed in the object side ... | 07/23/2002 |
| 6246516 | Modular infrared kepler telescope The invention is directed to an infrared Kepler telescope which includes an objective defining an optical axis and including a positive front group and a negative rear group all arranged on the optical axis. The objective further includes an interchangeab... | 06/12/2001 |
| 6219182 | Multiple magnification stereo video telescope objective lens system A stereoscopic objective lens system for video endoscopes and borescopes includes two full-diameter doublets and two lens pairs forming a stereo lens set. A rotatable dual telescope is disposed between the two doublets and the stereo lens pairs, establish... | 04/17/2001 |
| 6118583 | Optical imaging system A two-stage optical imaging system which is capable of operating in the infra red and which is compact, the system comprising an objective generally in the form of a Cassegrain system with primary and secondary mirrors A, B together with a relay C which m... | 09/12/2000 |
| 6057960 | Modular infrared Kepler telescope The invention is directed to an infrared Kepler telescope which includes an objective defining an optical axis and including a positive front group and a negative rear group all arranged on the optical axis. The objective further includes an interchangeab... | 05/02/2000 |
| 6002517 | Flat, hands-free, convertible Keplerian binoculars Binoculars which are flat in the direction of view include two powerful Keplerian telescopes placed in two flat containers covering each eye and held by an eyeglass frame resting on the nose and ears; the binoculars can be easily converted into magnifying... | 12/14/1999 |
| 5969860 | Optical System A dual field optical system [20] comprises an objective [A, B,] which forms an intermediate image [10] and a relay [E, F,] which transfers radiation to a focal plane [12]. The objective [A, B] comprises a primary mirror [A] and a secondary mirror [B] arra... | 10/19/1999 |
| 5956177 | Converter for polar-axis telescope A converter for a polar-axis telescope includes an optical system which varies one of the field of view, angle of field, and magnification of the polar-axis telescope. A movable lens barrel is provided which holds the optical system such that the optical ... | 09/21/1999 |
| 5953155 | Optical system An optical system having a selected one of a pair of fields of view. The optical system includes a primary reflector; a secondary reflector; a refractive optical system; and a drive. The drive orients the secondary reflector to a first region in optical a... | 09/14/1999 |
| 5930034 | Microscope with a telescopic function and method An auxiliary optical unit AU, which is removable on an object side of an objective lens of a microscope, has a built-in auxiliary lens group 15 having a negative refractive power. The auxiliary optical unit AU is provided with a focal point adjustment mec... | 07/27/1999 |
| 5796518 | Real image mode variable magnification finder optical system A real image mode variable magnification finder optical system is provided with an objective system having a positive refracting power, a correctly erect image forming system having a plurality of reflecting members for converting an intermediate image fo... | 08/18/1998 |
| 5737119 | Thermal imaging device A thermal imaging device (10) receives thermal infrared radiation from a viewed scene and responsively provides a visible image replicating the viewed scene. The imaging device (10) has a main housing with an optical aperture (16) at which a lens assembly... | 04/07/1998 |
| 5726814 | Multiple field of view changing apparatus for an optical system A three field of view change apparatus has a cubic carousel 1 mounted for rotation about a rotation axis 2 which is coincident with a diagonal of the carousel 1. The rotation axis 2 makes an angle of 54.736° with a fixed optical axis 5 so that carousel 1... | 03/10/1998 |
| 5691842 | Optical sight assembly An optical assembly (10) includes a first plurality of optical elements (14) providing the viewer a first field of view and a second plurality of optical elements (18) that, when moved into the optical path (16), provides the viewer with a second field of... | 11/25/1997 |
| 5673143 | Thermal imaging device with selectively replaceable telescopic lenses and automatic lens identification A thermal imaging device (10) provides for its use with a variety of accessory telescopic lenses (12). Each of the accessory telescopic lenses (12) and the thermal imaging device (10) include cooperating physical features allowing the lenses (12) to be ma... | 09/30/1997 |
| 5598296 | Prismatic telescope optical system A prismatic telescope optical system is available to include one of a plurality of optical systems different in magnification from one another, each having an objective system, an image erecting prism system, and an eyepiece system. Each of plurality of o... | 01/28/1997 |
| 5570229 | Real image mode variable magnification finder optical system A real image mode variable magnification finder optical system is provided with an objective lens having a positive refracting power and an eyepiece having a positive refracting power. The objective lens includes the first lens unit having a negative refr... | 10/29/1996 |
| 5563736 | Compact real image finder A compact, simple real image finder includes an objective, a field lens, erecting optics and an eyepiece. The field lens is separated from an internal image sufficiently that it contributes substantially to the magnification of the finder.... | 10/08/1996 |
| 5552931 | Finder optical system A finder optical system includes a finder objective lens provided independent of a photographic objective lens, an image erecting unit for erecting an image formed by the finder objective lens, and an eyepiece. The distance from a surface, closest to an i... | 09/03/1996 |
| 5548442 | Optical sight assembly An optical assembly (10) includes a first plurality of optical elements (14) providing the viewer a first field of view and a second plurality of optical elements (18) that, when moved into the optical path (16), provides the viewer with a second field of... | 08/20/1996 |
| 5528847 | Variable power telescopic sight A variable magnification telescopic rifle sighting means includes an externally-located zoom adjusting ring rotatable about sighting means axis and modified to provide a digitally-activated zooming feature, permitting an essentially instantaneous switchin... | 06/25/1996 |
| 5485307 | Binoculars A binocular includes an eye-piece tube, a first lens system associated with the eye-piece tube for providing a base magnification as seen through the eye-piece tube, and an eye-piece module having a second lens system therein which is interchangeably inst... | 01/16/1996 |
| 5479293 | Portable magnification apparatus for conducting medical examinations A portable apparatus useful for close range physical examinations, in particular for use as a colposcope, is described. The portable apparatus includes a stereoscopic optical unit, a main frame lens holder, an auxiliary frame lens holder, a light and moun... | 12/26/1995 |
| 5321546 | Switching variable magnification finder A switching variable magnification finder includes an objective lens system having a positive refracting power, an image erecting optical system for erecting an image formed by the objective lens system, and an eyepiece system having a positive refracting... | 06/14/1994 |
| 5321548 | Real image mode variable magnification finder optical system A real image mode variable magnification finder optical system comprising an objective lens system including a rotatable prism, an image erecting optical system for erecting an image formed by the objective lens system and an eyepiece lens system having a... | 06/14/1994 |
| 5121220 | Ocular turret telescope system An ocular turret telescope system for attachment to a conventional reflecting or refracting telescope or other optical instrument includes a plurality of integrated optical adjustment features. A rack and pinion slidable adjustment provides a viewer with ... | 06/09/1992 |
| 5052791 | Variable magnification viewfinder optical system with variable magnification based on polarization The variable magnification viewfinder optical system comprises a polarizing element allowing the light incident thereon to emerge as a linearly polarized light, an objective optical system comprising a first lens component having refractive power variable... | 10/01/1991 |
| 5000556 | Binocular telescope with auxiliary lens system Auxiliary lens cylinders constituting a tele-or wide-conversion lens system can be held in and away from the front of the objective lenses of a binocular telescope, so that the main lens system of the binocular telescope can be converted to a highly magni... | 03/19/1991 |
| 4877317 | Dual field of view catadioptric optical system A dual field of view catadioptric optical system is disclosed which includes a narrow field of view (FOV) and a wide FOV. The narrow field of view includes an apertured stationary primary reflector and a secondary reflector which may be pivoted into a com... | 10/31/1989 |
| 4838672 | Function-conversion device for ground monocular telescope A function-conversion device for a ground monocular telescope of an erecting-prism type ground monocular telescope. The device includes a rotational plate so mounted as to be horizontally movable in a vicinity of the focal plane of the objective lens of t... | 06/13/1989 |
| 4806005 | Spotting system for binoculars and telescopes An auxiliary spotting optical system for binoculars and telescopes includes an auxiliary objective lens proximate the principal objective lens, a principal magnification system field of view indicator and an image transfer arrangement between the field of... | 02/21/1989 |
| 4695119 | Infrared optical system A forward looking infrared optical system comprises a refractor telescope 20 in combination with a powered window and fold mirror arrangement 30. Arrangement 30 comprises a powered window element J with concentric spherical refractive surfaces having thei... | 09/22/1987 |
| 4548481 | Variable magnification observation optical device A variable magnification observation optical device comprises an objective lens, an eyepiece disposed rearwardly of the objective lens, a magnification changing lens disposed between the objective lens and the eyepiece, a support member for supporting the... | 10/22/1985 |
| 4486069 | Afocal telescopes An afocal telescope (20) comprises an objective system (21) and an eyepiece system (23) aligned on a common optical axis (19), the objective system (21) forming a real image (24) of radiation received from object space (17) and eyepiece system (23) being ... | 12/04/1984 |
| 4479695 | Afocal refractor telescopes An afocal refractor telescope is formed by a fixed focus achromatic telephoto objective system (10) and a fixed focus eyepiece system (11) aligned on a common optical axis (12) and is arranged to provide an internal real image (13). The objective system (... | 10/30/1984 |
