Temperature stable boresight module

Details Temperature stable boresight module Temperature stable boresight module

1985-08-22

1987-03-10

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2502521, 250330, 2504671, G02B 2304, G01M 1100

Patent

active

046492747

ABSTRACT:
Laser guided weapons delivery systems are now well known. Such systems, termed laser designator/sighting devices, are optical devices. One of the major potential sources of error in optical devices is misalignment of optical elements, particularly in helicopters and tanks where operating environments are quite severe. Alignment is maintained by boresighting, using optical instruments, called boresighting modules, which can be coupled optically with the misaligned optical device. Since these modules usually include prisms, beam dividers, mirrors and lenses, vibrations and other mechanical problems have been sources of error. While vibrational and weight load errors have been considered, the problem of errors due to thermal device has not been solved. The problem is solved herein by a boresight device incorporating a zero expansion, glass ceramic, optical transfer tube.

REFERENCES:
patent: 3518005 (1970-06-01), Weber
patent: 3966328 (1976-06-01), Wiklund
patent: 4022533 (1977-05-01), Firester
patent: 4139769 (1979-02-01), McCrum et al.
patent: 4422758 (1983-12-01), Godfrey et al.
Max Amon, Rudolph Hartman, Edward Poppliers, "Target Acquisition and Desition System/Pilots Night Vision Sight TADS/PNVS", 1981 Annual Meeting of the Optical Society of America, Kissimmee, Fla. (Oct. 1981).
Target Acquisition Designation Sight/Pilot Night Vision Sensor, vol. P-13, Substantiating Technical Data, Book 1, TADS Technical Description and Performance Data, Part 2, Martin Marietta Aerospace OR 15,801P13B1P2 (Dec. 1979).

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