[특허]Detection and display device

[미국특허] Detection and display device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01C-003/08 H01J-040/14
출원번호	US-0428624 (1989-10-30)
발명자 / 주소	Ake DuWain K. (Tipp City OH)
출원인 / 주소	Spectra-Physics, Inc. (San Jose CA 02)
인용정보	피인용 횟수 : 27 인용 특허 : 7

초록 ▼

A device for detecting and displaying the relative position of a generally horizontal reference plane of light, even when partial shading of the device occurs, produces a linear response that is independent of spot size and energy distribution. The device includes a photodetector means having first and second interdigitated photodetector elements positioned adjacent each other on the device. The first and second interdigitated photodetector elements provide first and second detection signals, respectively. A circuit means, responsive to the photodetector means, determines the relative levels of the first and second detection signals such that the position of the reference plane of light with respect to the detector device is determined. A display means, responsive to the circuit means, provides an indication of the position of the reference plane of light with respect to the detector device.

대표청구항 ▼

A device for use with a transmitter which produces a beam of light having an energy distribution, the device capable of detecting and displaying the relative position of a generally horizontal reference plane of light, said device generating a linear response which is independent of beam size and energy distribution, comprising: photodetector means, including first and second interdigitated photodetector elements positioned adjacent each other on said device, said first and second interdigitated photodetector elements providing first and second detection signals, respectively, said first and second interdigitated photodetector elements having a plurality of sections arranged in a generally vertically oriented row, wherein each section has at least one leg portion which is inclined with respect to said row, circuit means, responsive to said photodetector means, for determining the relative levels of said first and second detection signals such that the position of said reference plane of light with respect to said detector device is determined, and display means, responsive to said circuit means, for providing an indication of said position of said reference plane of light with respect to said detector device.

이 특허에 인용된 특허 (7) 인용/피인용 타임라인 분석

Petersen Alan (Cupertino CA), Detector device for a rotating light beam.
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Pehrson Marie S. (Sparks NV), Hand-held laser surveying rod.
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Cain Gary L. (Springfield OH) Goren Sidney B. (Troy OH), Laser alignment system with modulated field.
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Leitz ; Ludwig ; Heitmann ; Knut ; Schneider ; Eckart ; Schaefer ; Klaus Dieter, Method and apparatus for photoelectrically determining the position of at least one image focus plane.
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McCullough James R. (Falmouth MA) Agrawal Yogi C. (Hatchville MA), Method for measuring particle velocity using differential photodiode arrays.
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Mizuno Masao (Kyoto JPX), System for collecting and processing data relating to moving bodies.
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Rando Joseph F. (Cupertino CA) Kahn Michael E. (Palo Alto CA) Heumann Thomas E. (Atherton CA) Luebbers Scott S. (Cupertino CA), System for controlling attitude of laser beam plane.
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이 특허를 인용한 특허 (27) 인용/피인용 타임라인 분석

Takaaki Yamazaki JP; Ken-ichiro Yoshino JP, Beam position detector having a photodetection unit.
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Denner, John; Kelley, Paul; Melrose, David, Container structure for removal of vacuum pressure.
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Melrose, David Murray, Container structure for removal of vacuum pressure.
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Melrose, David Murray, Container structure for removal of vacuum pressure.
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Melrose, David Murray, Container structure for removal of vacuum pressure.
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Melrose, David; Denner, John; Kelley, Paul, Container structure for removal of vacuum pressure.
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Katayama, Yasutaka, Detection sensor to detect receiving position of laser light and level device employing the detection sensor to detect receiving position of laser light.
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Conner,Robert G.; Zalusky,James T., Handheld laser light detector with height correction, using a GPS receiver to provide two-dimensional position data.
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Ake, DuWain K., Laser light detector with reflection rejection algorithm.
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Ake DuWain K., Laser receiver and angle sensor mounted on an excavator.
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Douglas,Frank B., Laser receiver using multiple arrays of photodetector elements.
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Schumacher, Lars, Laser reference system.
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Kahle, Kent W.; Zalusky, James T.; Green, Francisco R., Laser reference system and method of determining grade rake.
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Dumoulin, Charles Leopold Elisabeth, Light detection circuit.
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Melrose, David; Kelley, Paul; Denner, John, Methods of compensating for vacuum pressure changes within a plastic container.
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Ake,DuWain K., Modulated laser light detector.
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Ake,DuWain K.; Hajmousa,Ayman, Modulated laser light detector with discrete fourier transform algorithm.
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Dumoulin, Charles Leopold Elisabeth, Multi PSD-arrangement and circuitry.
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Ake DuWain K., Multi-segment composite photocell device.
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Melrose, David, Plastic container having a deep-set invertible base and related methods.
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Melrose, David Murray; Denner, John; Kelley, Paul; Trude, Gregory, Plastic container having a deep-set invertible base and related methods.
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Melrose, David; Denner, John; Kelley, Paul; Trude, Gregory, Plastic container having a deep-set invertible base and related methods.
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Dierschke Eugene G. (Dallas TX) Berlien ; Jr. John H. (Plano TX), Position sensing photosensor device.
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Melrose, David; Kelley, Paul; Denner, John, Pressure reinforced plastic container having a moveable pressure panel and related method of processing a plastic container.
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Melrose, David; Kelley, Paul; Denner, John, System for processing a pressure reinforced plastic container.
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Melrose, David Murray, Systems and methods for handling plastic containers having a deep-set invertible base.
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Melrose, David; Kelley, Paul; Denner, John, Systems for compensating for vacuum pressure changes within a plastic container.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Detection and display device 원문보기