Batteries: thermoelectric and photoelectric – Thermoelectric – Radiation pyrometer
Patent
1978-10-02
1980-05-27
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Thermoelectric
Radiation pyrometer
126438, 136 89CA, 136206, 350162R, 350162ZP, 350211, H01L 3104
Patent
active
042048818
ABSTRACT:
A system for generating electrical power from sunlight, comprising a focussing diffraction grating or other focussing, spectrally dispersive means and a photocell array. The diffraction grating focuses sunlight into a spectrally dispersed band. The photocell array is composed of cells with different spectral sensitivities, located in positions in the dispersed band corresponding to the cell spectral sensitivities so that the net conversion efficiency of sunlight to electricity exceeds the conversion efficiency attainable with nondispersive collectors and single material photocells. Alternate embodiments of the invention provide sun tracking means, reflective or transmissive diffraction gratings, flat or curved diffraction grating surfaces, on- or off-axis focus, and optical coatings on the photocell surfaces.
REFERENCES:
patent: 3578845 (1971-05-01), Brooks et al.
patent: 3821549 (1974-06-01), Gloge
patent: 4003756 (1977-01-01), Abrams
patent: 4021267 (1977-05-01), Dettling
patent: 4091799 (1978-05-01), Steiner
F. A. Jenkins et al., "Fundamentals of Optics," McGraw-Hill Book Co., 1957, pp. 347-348.
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