Apparatus for acquisition of the surface shape of a distant obje

Details Apparatus for acquisition of the surface shape of a distant obje Apparatus for acquisition of the surface shape of a distant obje

1986-05-15

1988-05-31

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250235, 350 64, 356376, H01J 314

Patent

active

047475749

ABSTRACT:
In the disclosed device, a lens arrangement focuses light upon a detecting sensor arrangement as a vehicle passes over an object, such as the ground, whose surface is to be determined. An optical device slews the path of light to the lens arrangement from left to right relative to the direction of vehicle movement. In one embodiment, a four-part prism rotating on an axis along the direction of vehicle movement passes light through three lenses angled down, for, and aft the vertical and separate radiation detectors simultaneously sense radiation from the earth's surface. In another embodiment, a rotating hexagonal prism has outer reflecting surfaces skewed normal, for, and aft, so that a single lens views sequential signals and applies them to a radiation detector. The signals are sampled, held, digitally converted, recorded, and stored.

REFERENCES:
patent: 3967109 (1976-06-01), Amos et al.
patent: 4424442 (1984-01-01), Kitamura

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