Apparatus including multielement detectors for recording...

G - Physics – 01 – J

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352/32, 352/33.3

G01J 5/08 (2006.01) H04N 5/33 (2006.01) H04N 5/335 (2006.01)

Patent

CA 1303217

ABSTRACT OF THE DISCLOSURE An improved thermal imaging device is provided herein, which includes an optical recording system and a multi-element detector associated with an internally-mirrored autocollimating mirror. The mirror includes a diaphragm for limiting the aperture of the multi- element detector. The diaphragm is disposed close to the pupil of the optical system. In the improved device, the multi-element detector is offset from the optical axis. A second mirror is disposed at at a symmetrical point on the other side of the optical axis, at which the autocollimating mirror forms an image of the multi-element detector. Such mirror includes structure for projecting the image of the multi-element detector back to the autocollimating mirror. Such image is then reflected once more right way up and laterally unreversed onto the multi-element detector in such a way that each individual detector element receives its own image.

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