Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1977-03-17
1978-05-16
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356141, G01J 120
Patent
active
040900703
ABSTRACT:
Two pyrheliometers each carry out periodic scanning in a plane at right angles to one of the two perpendicular axes of pivotal displacement of the solar pointer. Each pyrheliometer is associated with means for measuring the angular difference between the direction of the sun projected on the scanning plane and the direction of the pointing axis projected on the same plane and for delivering a pointing error signal which is proportional to the angular difference. The error signal obtained in each scanning plane is applied to a motor for the pivotal displacement of the pointer so that the pointing axis is directed towards the sun when both error signals have been cancelled.
REFERENCES:
patent: 3591260 (1971-07-01), Harrington et al.
patent: 3717413 (1973-02-01), Kubo et al.
patent: 3804976 (1974-04-01), Gard
Commissariat a l''Energie Atomique
Nelms David C.
LandOfFree
Solar pointer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solar pointer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar pointer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1198766