Claims
- 1. A method for a quantitative detection of one of a linear movement and rotary movement, comprising the steps of:emitting radiation from at least two light emitters in a pulsed mode at one of a same clock frequency and different clock frequencies; detecting said radiation from said at least two light emitters by a detection device; increasingly shadowing one of the radiations by a movable grid device; and separating signals originating from different light emitters by an evaluation circuit coupled to said detection device.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of U.S. application Ser. No. 09/401,021, filed Sep. 21, 1999 now U.S. Pat. No. 6,313,460.
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