Filter structure having combined wavelength and polarization sen

Details Filter structure having combined wavelength and polarization sen Filter structure having combined wavelength and polarization sen

1989-03-20

1991-08-06

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250332, 250339, 359589, 359489, 359498, G02B 530, G02B 528

Patent

active

050380419

ABSTRACT:
A radiation filter structure having combined wavelength and polarization sensitive characteristics and which is constructed on a single substrate. A plurality of different wavelength (.lambda.1 to .lambda.n) interference filter coatings are applied to different areas of the filter substrate as a plurality of parallel adjacent stripes, such that different wavelengths .lambda.1 to .lambda.n are passed by the different stripe areas. Moreover, a plurality of different polarization filters of both parallel polarization or perpendicular polarization, are also applied as a plurality of parallel adjacent stripes to the different areas of the filter substrate. The arragement includes first and second interference filter stripes for each wavelength .lambda.1 to .lambda.n, and a parallel polarization filter for each first stripe for each wavelength .lambda.1 to .lambda.n, and a perpendicular polarization filter for each second stripe for each wavelength .lambda.1 to .lambda.n, such that parallel and perpendicular polarization components are passed, and can be detected, for each wavelength .lambda.1 to .lambda.n. In different disclosed embodiments the interference filter stripes and the polarization filter stripes are applied to either opposite sides or the same side of the substrate, and can extend along the length or across the width of the substrate. Moreover, the substrate can be formed by a radiation detector array, over which the interference filter stripes and the polarization filter stripes are applied.

REFERENCES:
patent: 2309629 (1943-02-01), Conrad
patent: 3544193 (1970-12-01), Laput
patent: 3631254 (1971-12-01), Covault
patent: 3771857 (1973-11-01), Thomasson et al.
patent: 3897136 (1975-07-01), Bryngdahl
patent: 3981568 (1976-09-01), Bartolomei
patent: 4423325 (1983-12-01), Foss
patent: 4743092 (1988-05-01), Pistor
patent: 4764670 (1988-08-01), Pace et al.

Affiliated with

Also associated with

Rating

Filter structure having combined wavelength and polarization sen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter structure having combined wavelength and polarization sen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter structure having combined wavelength and polarization sen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1989078