Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1981-10-15
1984-11-20
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356 1, 356 4, G01J 120
Patent
active
044840691
ABSTRACT:
Apparatus for sensing the distance from a reference point to a remote object comprises a light source and optics to project light from the light source onto the remote object. One component of the optics is a movable mirror which is used to position the projected light on a remote object. A sensor is provided to detect the position of the projected light on the remote object. In response to position information from the sensor, control circuitry produces a drive signal which controls a galvanometer. The galvanometer shaft is attached to rotate the mirror. When the mirror has been positioned such that the projected light impinges on the remote object at a predetermined location, the value of the drive signal can be used to compute the distance to the remote object by triangulation.
REFERENCES:
patent: 2547232 (1951-04-01), Schwartz et al.
patent: 3010019 (1961-11-01), Sohst
patent: 3396626 (1968-08-01), Hughes
patent: 3530468 (1970-09-01), Hannan
patent: 3554646 (1971-01-01), Carlson
patent: 3643689 (1972-01-01), Ejiri et al.
patent: 3696248 (1972-10-01), Cunningham et al.
patent: 3759614 (1973-09-01), Harvey
patent: 3906389 (1975-09-01), Matsumoto et al.
patent: 4255029 (1981-03-01), Freudenschuss
patent: 4291223 (1981-09-01), Sakane et al.
patent: 4303320 (1981-12-01), Isono
patent: 4359634 (1982-11-01), Saito et al.
Brophy J.
Maguire Joseph M.
Nelms David C.
St. Regis Paper Company
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