Thermal imaging optical system

Details Thermal imaging optical system Thermal imaging optical system

1989-05-10

1992-03-31

Arnold, Bruce Y.

Optical: systems and elements

Light control by opaque element or medium movable in or...

With rotating or pivoting element

250331, 359356, G02B 524

Patent

active

051002183

ABSTRACT:
This invention is concerned with a thermal imaging optical system finding utility as an individual weapon sight. The system comprises an infra-red objective lens including a chopper blade together with front and back elements with an adjustable element therebetween. Infra-red radiation is received by the objective lens which also incorporates an internal substantially collimated plane polarized visible light source which illuminates a liquid crystal. The path of the infra-red and visible light which is directed to the liquid crystal cell, is repeatedly interrupted by the chopper blade. Changes in the liquid crystal cell due to the infra-red radiation transmitted by the objective lens are caused to modulate the plane polarized visible light transmitted through the liquid crystal cell to generate a visible image. This image passes through a relay inverting system and is detected by a visible light detector and viewed through an eyepiece.

REFERENCES:
patent: 4166953 (1979-09-01), Menke et al.
patent: 4322620 (1982-03-01), Steinhage
patent: 4342941 (1982-08-01), Steinhage
patent: 4594507 (1986-06-01), Elliott et al.
patent: 4670654 (1987-07-01), Ross
patent: 4751387 (1988-06-01), Robillard

Affiliated with

Also associated with

Rating

Thermal imaging optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermal imaging optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal imaging optical system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2254551