Rangefinder for imaging system eliminating effect of rotor rotat

Details Rangefinder for imaging system eliminating effect of rotor rotat Rangefinder for imaging system eliminating effect of rotor rotat

1986-09-18

1988-03-22

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250236, 356 5, 350 68, H01J 314, H01J 516, H01J 4014

Patent

active

047330724

ABSTRACT:
An optical imaging system is provided with a pulsed laser rangefinder comprising a transmitter 10 aligned with the boresight of the imaging system, the return pulse being focussed by the telescope 6 of the imaging system upon its multi-mirror, two-rotor arrangement 2, 3 and reflected then to a detector 12 and display 13. To eliminate the effect of rotor rotation during the time-of-travel of the pulse, the latter is first reflected from the rotors to a beam reverser 14 including a 90 degree roof-reflector 18 (FIG. 2), which reflects the pulse back to the rotor mirrors in the same vertical plane and then to detector 12 along a path having a fixed spatial relationship to the path to the imaging-system detector 8.

REFERENCES:
patent: 3897150 (1975-07-01), Bridges et al.
patent: 4084092 (1978-04-01), Runciman
patent: 4457621 (1984-07-01), Harris et al.
patent: 4458982 (1984-07-01), Blain et al.
patent: 4461534 (1984-07-01), Runciman
patent: 4508422 (1985-04-01), Karlsson
patent: 4537465 (1985-08-01), Sherman et al.
patent: 4542986 (1985-09-01), Berdanier
patent: 4561775 (1985-12-01), Patrick et al.

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