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Primary Examiner: Mack, John H.
Assistant Examiner: Weisstuch, Aaron
Attorney: Stone; Steven F.

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Title: High efficiency converter of solar energy to electricity

Abstract: Apparatus is disclosed which permits the use of a large proportion of the solar spectrum in the coversion of solar energy to electricity by means of photovoltaic cells. The apparatus comprises a collecting element which concentrates the incident radiation, a collimating element which forms the concentrated incident radiation into a beam of parallel photons, a spectral separation element, such as a prism, prism plate or diffraction grating which spectrally separates the solar radiation in the collimated beam and a plurality of photovoltaic cells disposed in the separated spectrum, the energy gap of the cells being matched to the energy of the photons in that portion of the spectrum in which the cells are located.

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Inventors: Dettling, Joseph R. (Santa Clara, CA, US)

Application Number: 611454
Filing Date: 1975-09-08
Publication_date: 1977-05-03
Assignee: United Technologies Corporation (Hartford, CT)
Primary Class(es): 136/246 136/259
Other Classes:
US Patent Ref:

2641712	Jun, 1953	Kircher	136/89.
3912931	Oct, 1975	Gravisse et al.	250/458.

Other Refs: 1,089,018358,214

Sep, 1960	DT
Oct, 1931	UK

Other References: K. H. Spring, Editor, "Direct Generation of Electricity," Academic Press, N.Y. (1965), p. 354.
W. R. Cherry, "Advanced Photovoltaic Devices," 14th Annual Power Sources Conference (1960), pp. 37-38.
H. A. Strobel, "Chemical Instrumentation: A Systematic Approach," Second Edition, Addison-Wesley, Reading, Mass. (1973), p. 327.
H. H. Willard et al., "Instrumental Methods of Analysis," Fifth Ed., D. Van Nostrand, N.Y. (1974), p. 57.