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US 4,225,782 AGranted
Wide field of view-narrow band detection system
AssigneeSanders Associates, Inc.
InventorsJohn D. Kuppenheimer, Jr., Paul F. Murphy
Life of this patent
Estimating the term…
Abstract
A wide field of view-narrow band detection system including a radiation responsive member and optical filter is provided by employing optimal angle cones to simultaneously control field of view, throughput and angles impinging on the optical filter.
Claims13
A wide field of view-narrow band detection system, comprising:
- a radiation responsive member;
- an interference filter disposed on said radiation responsive member to filter any radiation applied to said member;
- and
- an angle converting cone arranged adjacent said interference filter to simultaneously control the field of view, throughput and angles impinging on said interference filter, said angle converting cone being open at both ends with the larger of the two ends adjacent said interference filter.
1 more element
A wide field of view-narrow band detection system, comprising:
- a radiation responsive member;
- an interference filter disposed on said radiation responsive member to filter any radiation applied to said member;
- and
- an angle converting cone having an entrance rim and an exit rim, said angle converting cone constructed so as to image the entrance rim of the cone onto the exit rim of the cone.
1 more element
A wide field of view-narrow band detection system, comprising:
- a radiation responsive member;
- an interference filter disposed on said radiation responsive member to filter any radiation applied to said member;
- and
- an angle converting cone arranged adjacent said interference filter to simultaneously control the field of view, throughput and angles impinging on said interference filter, said angle converting cone constructed so as to apply all radiation entering said cone to said interference filter with a maximum of one reflection off the sides of said cone.
1 more element
A wide field of view-narrow band detection system, comprising:
- a radiation responsive member;
- an interference filter disposed on said radiation responsive member to filter any radiation applied to said member;
- an angle converting cone having an entrance rim and an exit rim arranged to receive rays at said entrance rim and apply same to said filter;
- and
- a lens intermediate said angle converting cone and said filter.
2 more elements
A wide field of view-narrow band detection system, comprising:
- a radiation responsive member;
- a first angle converting cone having an entrance rim for receiving radiation to be applied to said radiation responsive member at a larger exit rim;
- a second angle converting cone having an entrance rim for receiving radiation from said first angle converting cone and a smaller exit rim, said radiation responsive member disposed adjacent said exit rim;
- and
- an interference filter disposed intermediate said exit rim of said first angle converting cone and said entrance rim of said second angle converting cone.
2 more elements
Dependencies are inferred from the claim text.