Infrared detector subarray with integral optical filter

Details Infrared detector subarray with integral optical filter Infrared detector subarray with integral optical filter

1991-07-15

1992-08-11

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250349, 25037008, H01L 2714, G02B 520

Patent

active

051381648

ABSTRACT:
An infrared detector subarray having an integral filter assembly is comprised of a plurality of stacked modules defining an infrared detector focal plane subarray; a filter plate sized and configured to correspond to the infrared detector subarray; and a plurality of supports disposed intermediate the filter plate and the detector subarray for attaching the filter plate to the subarray such that the filter plate is in close proximity to the detector subarray. Scattering and crossstalk are minimized by positioning the filter plate in close proximity to the detector subarray. The supports may comprise planar members having a thickness of less than approximately 0.003 inch such that they may be disposed intermediate adjacent modules. The filter plate may further comprise a plurality of parallel stripes, each parallel stripe transmitting infrared radiation of a different frequency than that transmitted by adjacent stripes such that a focal plane array comprised thereof may be sensitive to infrared radiation at a plurality of frequencies. Forming the filter as an integral part of the subarrays eliminates the need to fabricate a single filter having a diameter of two feet or more. The infrared detector subarray and integral filter assembly of the present invention provide for the fabrication of a filter which is easier to fabricate, has a higher fabrication yield, is lighter in weight, has improved mechanical stability, and facilitates more reliable testing.

REFERENCES:
patent: 4618763 (1986-10-01), Schmitz
patent: 4659931 (1987-04-01), Schmitz et al.
patent: 4703170 (1987-10-01), Schmitz
patent: 4792672 (1988-12-01), Schmitz
patent: 4794092 (1988-12-01), Solomon
patent: 5038041 (1991-08-01), Egan
patent: 5041723 (1991-08-01), Ishida et al.
Carlson et al., "Development of a Staring Mosaic Module", SPIE, vol. 197, Modern Utilization of Infrared Technology, 1979, pp. 2-8.

Affiliated with

Also associated with

Rating

Infrared detector subarray with integral optical filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared detector subarray with integral optical filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared detector subarray with integral optical filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-348507