U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Sunlight tracking sensor and its use in full-automatic solar tracking and collecting device

Patent 6465766 Issued on October 15, 2002. Estimated Expiration Date: Icon_subject May 15, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3305686

Radiant energy tracking device
Patent #: 4006356
Issued on: 02/01/1977
Inventor: Johnson ,   et al.

Three axis stellar sensor
Patent #: 4159419
Issued on: 06/26/1979
Inventor: Wittke

Solar tracking system
Patent #: 4649900
Issued on: 03/17/1987
Inventor: Trihey

5117744

Sun tracker system for a solar assembly Patent #: 5798517
Issued on: 08/25/1998
Inventor: Berger

Inventor

Application

No. 570643 filed on 05/15/2000

US Classes:

250/203.4, Sun250/203.7With moving reticle in optical path

Examiners

Primary: Kim, Robert H.
Assistant: Song, Hoon

Attorney, Agent or Firm

International Class

G01C 021/00

Foreign Application Priority Data

1999-05-19 CN

Abstract

A sunlight tracking sensor has light sensing faces for receiving light signals from all directions. The light sensing faces are arranged in four quadrants. Each quadrant of the light sensor can sense light signals in two coordinate axes direction. The light signals are processed and used to adjust a light collecting device to track light from the sun.

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