Sunlight direction sensor

Details Sunlight direction sensor Sunlight direction sensor

1982-05-07

1985-01-22

Willis, Davis L.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

126425, G01J 120, F24J 302

Patent

active

044954085

ABSTRACT:
Provided is a sunlight direction sensor having a cylindrical body, a nontransparent flange having a diameter smaller than the inner diameter of the cylindrical body, a first photosensor disposed on the flange or substantially at the center of the inner bottom surface of the cylindrical body, and at least one pair of second and third photosensors which are disposed at the inner bottom surface of the cylindrical body and which are arranged symmetrically with respect to the axis of the cylindrical body, inner edges of the second and third photosensors corresponding to the inner periphery of the flange.

REFERENCES:
patent: 3599001 (1971-08-01), Rolnik et al.
patent: 3783271 (1974-01-01), Abbott, Jr. et al.
patent: 3996460 (1976-12-01), Smith
patent: 3996917 (1976-12-01), Trihey
patent: 4003655 (1977-01-01), Wasilko
patent: 4041307 (1977-08-01), Napoli et al.
patent: 4225781 (1980-09-01), Hammons
patent: 4355896 (1982-10-01), Laue

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