Real time holographic filter using nonlinear optical materials

Details Real time holographic filter using nonlinear optical materials Real time holographic filter using nonlinear optical materials

1987-08-25

1989-11-07

Ives, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428428, 428441, 428522, 427165, 430321, B32B 900, B32B 1710, G02B 518

Patent

active

048791679

ABSTRACT:
The present invention is an adaptive laser protection device which adaptively forms a reflection holographic optical element to reflect away incident laser radiation. The laser protection device includes a layer of a nonlinear optical material which has an index of refraction varying with light intensity, a transparent layer having a depth greater than the coherence length of the expected ambient illumination and less than the coherence length of the expected laser radiation, and a partially reflecting layer on the far surface of the transparent layer. Laser radiation incident on the laser protection device forms an interference pattern in the nonlinear optical material between directly incident light and light reflected from the partially reflecting layer. This interference pattern within the nonlinear optical material causes the formation of a holographic optical element due to varying indices of refractions. The geometry of the holographic optical element substantially reflects away the incident laser radiation protecting the user. The preferred embodiment includes a transparent substitute for supporting the device and an optical filter to limit incident light to a predetermined band.

REFERENCES:
patent: 4531809 (1985-07-01), Carter et al.
patent: 4741962 (1988-05-01), Wada et al.

Affiliated with

Also associated with

Rating

Real time holographic filter using nonlinear optical materials does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Real time holographic filter using nonlinear optical materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real time holographic filter using nonlinear optical materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-83009