Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2007-09-12
2009-12-08
Alsomiri, Isam (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
Reexamination Certificate
active
07630062
ABSTRACT:
A distance measuring apparatus, which can attain a distance compensation of a high precision and can be stably operated by using a cheap circuit, without any arrival at a supersaturated state for a great reflected light intensity, while a gain of an amplifying circuit is made higher, in order to accurately detect even a weak reflected light. The apparatus comprises: a light source for outputting a pulsed measurement light towards a measurement target object; a light receiver for detecting the reflected light from the measurement target object; and a calculator for calculating the distance from the measurement target object on the basis of the delay time between the output timing of the measurement light and the detected timing of the reflected light by the light receiver, and a light receiver5is composed of a photodiode PD for photo-electrically converting the reflected light, a diode D that is connected in series to the photodiode PD and clamps the light current generated in the photodiode PD, and an amplifying circuit50for amplifying the output of the photodiode PD, and it contains an integration processor for integrating the output of the amplifying circuit50and a distance compensator for compensating the distance in accordance with the output of the integration processor.
REFERENCES:
patent: 3125693 (1964-03-01), De Clue
patent: 4188551 (1980-02-01), Iwasaki et al.
patent: 4505582 (1985-03-01), Zuleeg et al.
patent: 4952795 (1990-08-01), Gauthier et al.
patent: 5949530 (1999-09-01), Wetteborn
patent: 7088433 (2006-08-01), Kato
patent: 7202941 (2007-04-01), Munro
patent: 2003/0103197 (2003-06-01), Shirai et al.
patent: 2005/0110976 (2005-05-01), LaBelle
patent: 2005/0146705 (2005-07-01), Lei et al.
patent: 2008/0094201 (2008-04-01), Paradiso et al.
patent: 07-128438 (1995-05-01), None
patent: 10/020035 (1998-01-01), None
Hino Masanori
Mori Toshihiro
Alsomiri Isam
Hokuyo Automatic Co., Ltd.
Pillsbury Winthrop Shaw & Pittman LLP
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