Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Reexamination Certificate
2007-01-23
2007-01-23
Diamond, Alan (Department: 1753)
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
C136S246000, C136S259000, C136S257000, C257S432000, C257S435000, C250S216000, C359S586000, C359S589000, C359S588000, C359S587000, C359S839000, C359S590000, C359S359000, C359S360000
Reexamination Certificate
active
10217441
ABSTRACT:
This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.
REFERENCES:
patent: 5403405 (1995-04-01), Fraas et al.
patent: 5488511 (1996-01-01), Rahmlow, Jr.
patent: 5611870 (1997-03-01), Horne et al.
patent: 5700332 (1997-12-01), Brown et al.
patent: 6689949 (2004-02-01), Ortabasi
Black et al, “Thermophotovoltaics—Development Status and Parametric Considerations for Power Applications,” Eighteenth International Conference on Thermoelectrics, pp. 639-644, meeting date Aug. 29, 1999-Sep. 2, 1999, published in 1999.
Raynolds et al, an abstract entitled “Micron-scale Frequency Selective Surfaces for Thermo-Photovoltaic Spectral Control,” American Physical Society, Annual March Meeting, Mar. 12-16, 2001, published Mar. 2001.
Baldasaro et al, “Thermodynamic analysis of thermophotovoltaic efficiency and power density tradeoffs,” Journal of Applied Physics, vol. 89(6), pp. 3319-3327, Mar. 15, 2001.
Brown et al, “Segregated tandem filters for enhanced conversion efficiency in a thermophotovoltaic energy conversion system,” dated Jul. 7, 1998, OSTI, for U.S. Appl. No. 08/678,741.
Martin et al, “Sputtered Si :H alloys for edge filters : application to thermophotovoltaics,” Applied Optics, vol. 41, No. 31, pp. 6702-6707, Nov. 1, 2002.
Baldasaro Paul Francis
DePoy David Moore
Dziendziel Randolph J.
Diamond Alan
Field Linda P.
Gottlieb Paul A.
The United States of America as represented by the United States
LandOfFree
Tandem filters using frequency selective surfaces for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tandem filters using frequency selective surfaces for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tandem filters using frequency selective surfaces for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3820646