Laser range finder

Details Laser range finder Laser range finder

2008-04-29

2008-04-29

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S139040

Reexamination Certificate

active

10943836

ABSTRACT:
A laser range finder measures the range between itself and another laser range finder by propagating a laser beam only in one way therebetween. A laser unit generates a short-pulse laser beam to be transmitted to the other laser range finder. A photodetector receives a short-pulse laser beam transmitted from the other laser range finder and detects the direction of the other laser range finder. A pointing unit adjusts the direction the laser beam generated by the laser unit is to be transmitted, into alignment with the direction of the other laser range finder. A controller stores in advance a holding time after the other laser range finder receives the short-pulse laser until the other laser range finder transmits the short-pulse laser, and calculates the range between the laser range finders from the time the short-pulse laser beam is transmitted, the short-pulse laser beam is received, and the holding time.

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