Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1994-12-22
1997-03-04
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25055923, 25055931, 356376, H04N 122
Patent
active
056082118
ABSTRACT:
In an optically scanning displacement detector for determination of an object's profile, the detector comprises a light projecting unit for radiating a light beam on the object, a light receiving unit for receiving a reflected light beam from the object to output an object position signal, and a distance determining unit for determining a distance between the projecting unit and the object in accordance with the object position signal. The light projecting and receiving units are mounted in a carrier which is movably supported to a frame. The carrier can be moved in a scanning direction to scan the light beam across the object by the use of an electric motor such as a voice-coil linear motor. Since the present detector does not use a scanning mirror for deviating the light beam, the object's profile can be determined with improved accuracy of measurement, while preventing a formation of dead space in which the light beam can not be radiated during the scanning operation. The detector also comprises a carrier position sensor for determining a position of the carrier in the scanning direction, and a safeguard unit for sensing unusual operation of the motor to generate a stop signal, and stopping a supply of electric current to the motor in response to the stop signal.
REFERENCES:
patent: 3355590 (1964-10-01), Bertram
patent: 4332989 (1982-06-01), Nicolaisen
patent: 4577142 (1986-03-01), Matsumiya
patent: 4676649 (1987-06-01), Phillips
patent: 4806777 (1989-02-01), Ulbers et al.
patent: 4864147 (1989-09-01), Ikari
patent: 4924598 (1990-05-01), Gruhler
patent: 4952816 (1990-08-01), Dunning
patent: 4959553 (1990-09-01), Yamada et al.
patent: 5124524 (1992-06-01), Schuster et al.
patent: 5229619 (1993-07-01), Van Amstel
patent: 5233201 (1993-08-01), Cheng
patent: 5294804 (1994-03-01), Kajimua
patent: 5424836 (1995-06-01), Weise et al.
patent: 5451777 (1995-09-01), Blake et al.
Steuerungssystem fur Montageroboter, "Control System for an Assembly Robot", D. Classe, Erlangen, Automatisierungstechnik at, 34, Jahrgang Oct. 1986, pp. 381-387.
Hashimoto Takeshi
Hirono Atsuyuki
Ito Takayasu
Allen Stephone
Matsushita Electric & Works Ltd.
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