Batteries: thermoelectric and photoelectric – Photoelectric – Panel or array
Reexamination Certificate
1999-12-30
2001-02-20
Diamond, Alan (Department: 1753)
Batteries: thermoelectric and photoelectric
Photoelectric
Panel or array
C136S259000, C136S290000, C136S291000, C126S600000, C126S684000, C126S685000, C126S686000, C126S696000, C126S601000, C250S203400, C250S216000, C257S432000, C359S850000, C359S853000, C359S864000, C359S862000, C359S863000, C359S857000
Reexamination Certificate
active
06191352
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a device for projecting a defined light beam onto a photosensitive area, particularly for testing the performance of a photovoltaic module.
Performance tests of this kind require a well defined light beam as far as global intensity, local intensity distribution and spectral composition are concerned. For DC photovoltaic modules, pulsed simulated light sources are preferred over natural sunlight due to their well-known and constant light spectrum, their stable intensity over the measuring cycle (about 2 ms), their availability over the entire year and the low and constant temperature level to which the module is subjected during the short term test.
However, some new technology modules such as multi-junction solar panels or AC photovoltaic modules require measuring cycles of longer duration for which high intensity artificial light sources are only available at high costs.
SUMMARY OF THE INVENTION
It is therefore the aim of this invention to conceive an intense light source which is comparatively cheap, which supplies a uniform and defined light intensity on a large area of up to 4 m
2
during long lasting test periods and which allows one to keep the module under test at a controlled low temperature.
This aim is achieved according to the invention by the device as defined in claim
1
. Preferred embodiments of this device are characterized in the dependent claims.
REFERENCES:
patent: 3905352 (1975-09-01), Jahn
patent: 4249516 (1981-02-01), Stark
patent: 4284839 (1981-08-01), Johnson
patent: 4641227 (1987-02-01), Kusuhara
patent: 5578140 (1996-11-01), Yogev et al.
patent: 2497927 (1982-07-01), None
patent: 2 497 927 (1982-07-01), None
Helmke Claas
Ossenbrink Heinz
Zaaiman Willem
Diamond Alan
European Community (EC)
Sughrue Mion Zinn Macpeak & Seas, PLLC
LandOfFree
Device for projecting a defined light beam onto a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for projecting a defined light beam onto a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for projecting a defined light beam onto a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2606055