Laser distance measuring system with a shutter mechanism

Details Laser distance measuring system with a shutter mechanism Laser distance measuring system with a shutter mechanism

2007-07-30

2008-12-30

Tarcza, Thomas H (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

Reexamination Certificate

active

07471377

ABSTRACT:
A laser distance measuring system includes an object lens, a beam splitter, a transmitter, a receiver, and a shutter mechanism. The beam splitter is disposed at one side of the object lens. The transmitter emits a laser beam that is split by the beam splitter into a measurement beam and a reference beam. The measurement beam passes through the object lens, and is reflected by an object to result in a reflected measurement beam passing through the object lens. The receiver is disposed to receive the reflected measurement beam and the reference beam. The shutter mechanism includes a beam masker operable to move to either block path of the reflected measurement beam to the receiver or path of the reference beam to the receiver.

REFERENCES:
patent: 5082364 (1992-01-01), Russell
patent: 5949531 (1999-09-01), Ehbets et al.

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