Beam directing system having a moveable low mass inertia beam fo

Details Beam directing system having a moveable low mass inertia beam fo Beam directing system having a moveable low mass inertia beam fo

1975-02-07

1976-06-01

La Roche, Eugene

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250234, 350 55, G01J 120

Patent

active

039611795

ABSTRACT:
A low mass inertia scanning system is used in conjunction with a servo control system to make high frequency changes in beam direction. The scanning system is placed behind a beam expansion optical system, which reduces the mass-inertia and increases its directional accuracy. When used in the reverse direction, with beam reduction, it can be used to increase the directional movement. A beam scanning system, refractive or reflective, diverts the ray direction from or toward the primary optical axis. A beam expander, a telescope in reverse, projects the beam, for instance, to a moving target. Alternately if the source-director-telescope is moving, it can keep the beam on a stationary or moving target. The beam direction or image is maintained in the same position, irrespective of source-director-telescope or target movement, by means of a sensing device and a servo system which appropriately adjusts the position of the scanning system (director) to accommodate such position change.

REFERENCES:
patent: 3446980 (1969-05-01), Meier
patent: 3644043 (1972-02-01), Jones et al.
patent: 3647276 (1972-03-01), Howell et al.
patent: 3899145 (1975-08-01), Stephenson

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