Optical night vision device with standard light intensifier

Details Optical night vision device with standard light intensifier Optical night vision device with standard light intensifier

2011-01-04

2011-01-04

Tarcza, Thomas H (Department: 3662)

Radiant energy

Miscellaneous

C089S041050, C348S143000

Reexamination Certificate

active

07863592

ABSTRACT:
The disclosure relates to a compact optical device, intended for use in a night vision telescope, that includes an objective, a standard light intensifier that rotates the image through 180° between its entry and its exit, an eyepiece, and four optical deflections, one in the objective and three in the eyepiece. The eyepiece, producing a single intermediate image between its entry and its exit, includes a combiner whose deflection angle α depends on its optical index n and the half-field θ of the device. The field width of the device is at least 40°. The invention is applicable notably to night vision binoculars for aircraft or helicopter pilots.

REFERENCES:
patent: 4653879 (1987-03-01), Filipovich
patent: 6088165 (2000-07-01), Janeczko et al.

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