Position detecting apparatus

Details Position detecting apparatus Position detecting apparatus

1983-12-16

1986-11-18

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

901 47, G01B 1114

Patent

active

046232532

ABSTRACT:
The image of an object is focused on a pair of photoelectric transducer arrays through a focusing lens, a beam splitter, and cylindrical lenses, the photoelectric transducer arrays having longitudinal axes extending substantially perpendicularly to each other. A scanning unit operates to move object images one-dimensionally over the photoelectric transducer arrays at an angle to the longitudinal axes thereof. A control unit is responsive to detected signals from the photoelectric transducer arrays and generates a scanning signal for the scanning unit for determining a two-dimensional position of the object with respect to the photoelectric transducer arrays. The beam splitter and the cylindrical lenses may be dispensed with, and the photoelectric transducer arrays may be replaced with a matrix of four photoelectric transducers.

REFERENCES:
patent: 3448284 (1969-06-01), Friesecke
patent: 4097750 (1978-06-01), Lewis et al.
patent: 4327959 (1982-05-01), Minoura et al.
patent: 4480918 (1984-11-01), De Fazio
IBM Technical Disclosure Bulletin, vol. 15, No. 12, May 1973, pp. 3791-3792, New York, U.S., H. E. Korth et al.: "Position Detection of an Extended Light Spot".
Proceedings of the Society of Photo-Optical Instrumentation Engineers, vol. 251, "Optical Alignment", Jul. 29-31, 1980, pp. 210-213, Washington, U.S., J. F. Hoose: Alignment System Devices for Medium Repetition Rate Glass Fusion Lasers, Figure captioned, Pointing Focusing Centering Sensor (P.F.C.), p. 211, first paragraph.

Affiliated with

Also associated with

Rating

Position detecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Position detecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position detecting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1614888