Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1976-06-07
1977-08-09
Rolinec, Rudolph V.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250209, 250237R, 126270, G01J 120
Patent
active
040413071
ABSTRACT:
An opaque open-ended cylindrical tube, with a flange on one end, has its other end connected to a surface of a platform with the axis of the cylinder normal to the surface. When rays of the sun are substantially normal to the surface, a lens causes a concentrted illumination of a group of tracking photocells carried on the surface within the cylinder. In response to the concentrated illumination, the tracking photocells provide signals that cause the platform to rotate in a direction that maintains the surface substantially normal to the rays of the sun. Additionally, outside of the cylinder and adjacent thereto, a group of acquisition photocells are shielded by the flange from the sun when the rays thereof are substantially normal to the surface. When there is a large angle between a normal to the surface and the rays of the sun, the acquisition photocells provide signals that cause the platform to rotate in a direction that reduces the angle.
REFERENCES:
patent: 2954608 (1960-10-01), Lawlor
patent: 2956170 (1960-10-01), Sibley
patent: 3996917 (1976-12-01), Trihey
Marx Richard Everet
Napoli Louis Sebastian
Norton Edward J.
RCA Corporation
Rolinec Rudolph V.
Sunderdick Vincent J.
Weiss Leonard
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