1
Robert B Wood, Mark A Thomas, John P Desmond: Automobile head-up display system with reflective aspheric surface. Flight Dynamics, Stoel Rives Boley Jones & Grey, October 9, 1990: US04961625 (188 worldwide citation)

An optical display system (10) presents visual source information to an observer (18). The display system includes a vision unit (14) that has reflective surfaces (16) through which the observer can view an outside world scene and which reflect source information emanating from an information source ...


2
Jan Hoogland: Flat field lenses. Townsend & Townsend, March 11, 1986: US04575195 (43 worldwide citation)

A flat field lens system wherein the Petzval sum is corrected without requiring many spaced high powered elements or sharply bent elements. This is achieved by having the Petzval sum correction dominated by the index difference. In an embodiment suitable for use in endoscope transfer optics where me ...


3
G Michael Morris, Kevin J McIntyre, Kenneth F Walsh: Beam shaping optics for diverging illumination, such as produced by laser diodes. Rochester Photonics Corporation, M LuKacher, K LuKacher, June 13, 2000: US06075650 (28 worldwide citation)

A lens shapes a diverging laser diode beam, and particularly circularizes and collimates, or diverges, or converges the beam. The lens may be part of an optical system, or part of a laser diode assembly. The lens is constituted of a body, the opposite ends of which are spaced from each other. The su ...


4
Hideyasu Takato: Objective optical system for endoscopes. Olympus Medical Systems, Arnold International, Bruce Y Arnold, August 10, 2010: US07773318 (27 worldwide citation)

An objective optical system for endoscopes is characterized by comprising, in order from its object side, a stop, a first lens and a second lens. The first lens comprises a positive meniscus lens concave on its object side and the second lens comprises a positive lens convex on its object side. The ...


5
Hirofumi Matsuo, Hiroyuki Kato: Ocular lens system. Asahi Kogaku Kogyo, Sughrue Mion Zinn Macpeak & Seas, November 10, 1992: US05162945 (22 worldwide citation)

An ocular system is disclosed which is composed of at least three lens elements for constituting, in order from the eye side, at least first and second lens units. At least one of the lens elements is made of resin. Two of the lens elements are substantially cemented together. In addition, an aspher ...


6
Kazuo Kikutani: Lens system for reading image. Mahk, Spencer Frank & Schneider, December 12, 1995: US05475536 (19 worldwide citation)

A lens system used for reading an image, the system being constructed of two lenses and presents sufficient performance for reading an image in an image scanner, a facsimile, etc. The system is constructed of a positive meniscus image-forming lens and a positive meniscus auxiliary lens. The convexes ...


7
Masaya Kobayashi, Kaoru Kushida, Norikazu Arai: Optical system for use in recording and reading information on an optical information medium. Konica Corporation, Finnegan Henderson Farabow Garrett & Dunner, December 12, 1995: US05475537 (18 worldwide citation)

An optical system for recording and reading information on an optical information medium such as a video disk, a mini disk, a magneto-optical disk, and a phase change disk. The optical system includes: a light source for irradiating the optical information medium with a light beam through a coupling ...


8
Tomohiro Saito: Imaging lens. Enplas Corporation, William L Androlia, H Henry Koda, May 19, 2009: US07535660 (16 worldwide citation)

An imaging lens is used for forming an image of an object on an image-taking surface of a solid state image sensor element and includes, in order from an object side to an image surface side, a diaphragm, a first lens which is a meniscus lens having a positive power whose convex surface faces the ob ...


9
Takahiro Sugiyama: Lens for use with an optical disk. Asahi Kogaku Kogyo Kabushiki Kaisha, Sughrue Mion Zinn Macpeak & Seas, June 28, 1988: US04753524 (16 worldwide citation)

A lens system for use with an optical disk comprises, in order from the side of a light source, a front group composed of a cemented lens made up of positive and negative lenses, and a rear group composed of a single positive lens or one positive and one negative lens. The lens system satisfying the ...


10
Kenichi Takanashi, Nobuo Sakuma: F.theta. lens for use in light beam scanner. Ricoh Company, Oblon Fisher Spivak McClelland & Maier, November 17, 1987: US04707085 (15 worldwide citation)

An f.theta. lens for use in a light beam scanner for deflecting a monochromatic or quasi-monochromatic light beam. The f.theta. lens comprises two positive-meniscus lenses having concave surfaces directed to a deflection point about which the light beam is deflected. The lenses have lens surfaces ha ...