Solar position tracing sensor using thin film pattern of...

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems

Reexamination Certificate

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C250S238000, C250S221000

Reexamination Certificate

active

10991714

ABSTRACT:
Provided is a solar position tracing sensor having a high resolving power by using a temperature coefficient and heat conductivity of fine patterns on a printed circuit board (PCB). The solar position tracing sensor is reliable and has a wide application ranges for both celestial and terrestrial applications. It can be produced in mass at cheep cost. The solar position tracing sensor includes: a light condenser for condensing and filtering sunlight; a PCB having light reception patterns on the top and bottom surfaces; a heat protection plate for preventing the temperature of the entire PCB from being increased; a reference voltage supplier for providing a reference voltage source to find out a specific light reception pattern whose temperature is increased from radiation of the sunlight; and a voltmeter for measuring alteration in voltage based on the alteration in a temperature coefficient of the light reception pattern with increased temperature.

REFERENCES:
patent: 4114596 (1978-09-01), Chang et al.
patent: 6018122 (2000-01-01), Hibino et al.
patent: 6313396 (2001-11-01), Glenn
“A Study on the Fluid Definite Equipment Inside Chamber Using Photo-Coupler”, J. Oh, et al., Korean Institute of Communication and Sciences, vol. 6, pp. 720-725, Nov. 1996.

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