Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1989-11-07
1996-04-23
Buczinski, Stephen C.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359887, G02F 103, G02B 522
Patent
active
055109284
ABSTRACT:
A method and apparatus are provided for filtering incident radiation to protect imaging sensors from the damaging effects of high intensity radiation. The apparatus comprises a filter and a plurality of mirrors disposed within a cube. The filter is positioned diagonally within the cube so that portions of the incident radiation reflected by the filter are directed to a beam-stop on a surface of the cube. Portions of the radiation passed by the filter are directed by the mirrors to pass through the filter a plurality of times. Passing the radiation through a single filter a plurality of times provides a high density imaging system in a physically compact geometric shape. A focused beam passes through the filter in regions of successively greater optical gain. High intensity radiation thermally activates the filter to reject the radiation and protect the sensors. Activation of the filter proceeds in stakes starting with the region of the filter receiving the highest optical gain so that the filter is also protected from damaging radiation.
REFERENCES:
patent: 2881663 (1959-04-01), Dearborn
patent: 3289099 (1966-11-01), Masters
patent: 3365678 (1968-01-01), Maurer
patent: 3415602 (1968-12-01), Harrick
patent: 3531183 (1970-09-01), Aagard
patent: 3575490 (1971-04-01), Reisman
patent: 3623797 (1971-11-01), Daw
patent: 3904981 (1975-09-01), Hughes et al.
patent: 4156209 (1979-05-01), Herbst et al.
patent: 4420217 (1983-12-01), Gerharz
Buczinski Stephen C.
McFarren John C.
Rockwell International Corporation
LandOfFree
Multiple pass 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 Multiple pass optical filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple pass optical filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2313802