Method and device for regulating a light source of a...

Details Method and device for regulating a light source of a... Method and device for regulating a light source of a...

2007-06-26

2007-06-26

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C356S222000

Reexamination Certificate

active

10927689

ABSTRACT:
A device for regulating a light source of a position-measuring unit includes: a measuring standard device that is movable relative to the light source; and a plurality of photodetectors, the photocurrent of at least one of the photodetectors usable as a basis for forming an actual value. The photodetectors are arranged such that light modulated by at least a partial number of the photodetectors of the measuring standard device is convertible into position-dependent photocurrents. In addition, the position-measuring unit includes a device for generating a setpoint value, and a comparator, by which a comparison between the actual value and the setpoint value may be made. By the generation device, the setpoint value is able to be generated based on the position-dependent photocurrents. A method is for performing such a regulation.

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