Night vision goggle with improved optical system

Details Night vision goggle with improved optical system Night vision goggle with improved optical system

1993-02-16

2000-10-31

Nguyen, Thong

Optical: systems and elements

Compound lens system

Telescope

359641, 359744, 359400, G02B 1316, G02B 2304

Patent

active

061411469

ABSTRACT:
There is provided an improved night vision goggle having a housing containing an objective lens assembly, an image intensifier tube, a collimator assembly, a splitter member, and a pair of afocal telescopes. The optical axis of the afocal telescopes are offset from the optical axis of the collimator and objective lens assemblies. A pair of achromatic doublet lens assemblies are mounted side-by-side on the exit side of the collimator and near the entrance pupils of the telescopes. The optical axes of the doublet lens assemblies are coaxial with the optical axes of the telescopes. The achromatic doublet lens assemblies thus collect light from a sub-diameter, decentered aperture of the collimator assembly, and correct axial chromatic aberration in the telescopes.

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