Photodetection device for rotary laser system

Details Photodetection device for rotary laser system Photodetection device for rotary laser system

2006-10-03

2006-10-03

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S206100, C250S206200, C356S141300, C359S820000

Reexamination Certificate

active

07115852

ABSTRACT:
A photodetection device for a rotary laser system for projecting at least two fan-shaped beams tilted at a known angle with respect to a horizontal plane and having a known spreading angle, comprising at least three photodetectors arranged in a known relationship.

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