Optical sighting devices

Details Optical sighting devices Optical sighting devices

1976-09-27

1979-06-19

Corbin, John K.

Optics: measuring and testing

Fiducial instruments

250334, 250347, 350 11, 350166, 356141, 356222, G01J 504

Patent

active

041585046

ABSTRACT:
An optical sighting device consists of a hood with two windows which can transmit radiation within predetermined wavelength ranges to a rotatable reflecting device. The reflecting device receives radiation from one or other of the windows and the hood is rotatable subject to the rotation of the reflecting device. The radiation reflected by the reflecting device is received by two dichroic mirror plates which are suitable for transmitting or reflecting thermal infra-red radiation, visible radiation and near infra-red radiation towards suitable corresponding detectors.

REFERENCES:
patent: 3160751 (1964-12-01), Dunning
patent: 3200250 (1965-08-01), Bouwers
patent: 3585281 (1971-06-01), Jordan
patent: 3594578 (1971-07-01), Ohman
patent: 3719424 (1973-03-01), Weischedel
patent: 3859530 (1975-01-01), Brewster
patent: 3977793 (1976-08-01), Trotta
Wolfe et al., "Optical Materials, Films, and Filters for Infrared Instrumentation," Proc. of the IRE-Paper 4.2.3 vol. 47, Sep. 1959, pp. 1540-1546.

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