Optical scanning apparatus

Details Optical scanning apparatus Optical scanning apparatus

1987-02-27

1988-09-20

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250334, 350 68, G01J 100, G02B 2610

Patent

active

047727985

ABSTRACT:
The apparatus comprises a radiation-sensitive detector (17) and optical means for directing radiation from an observed field of view on to the detector. The optical means includes a rotatable support member (10) rotatable about an axis (11) and carrying a number of reflecting members (12) equally-spaced around it. Each reflecting member (12) is located in a plane parallel to the axis (11) of the support member and each is arranged at the same non-perpendicular angle to a radius of the support member. A pivoted reflecting member (14) is located inside the locus of the plurality of reflecting members (12) and is rotatable about an axis (15) located in a plane perpendicular to that axis (15). In operation radiation from the field of view is reflected by the pivoted reflecting member (14) on to successive ones of the rotating reflecting members (12) and thence on to the detector (17).

REFERENCES:
patent: 4084909 (1978-04-01), Mathisen
patent: 4123134 (1978-10-01), Meyers
patent: 4486662 (1984-12-01), Abel
patent: 4487473 (1984-12-01), Hatch et al.

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