Optics: measuring and testing – Photometers – Photoelectric
Reexamination Certificate
2006-06-07
2009-11-17
Lauchman, L. G (Department: 2877)
Optics: measuring and testing
Photometers
Photoelectric
C356S221000, C356S226000
Reexamination Certificate
active
07619727
ABSTRACT:
The present invention relates to a light wavelength and intensity measuring device. The device automatically measures a center wavelength of the light source and an intensity of the light corresponding to the center wavelength by using a main photodetector, at least one optical filter, and at least one sub photodetector when the light source is connected to the device. The main photodetector detects the intensity of the light applied by the light source, the optical filter transmits the light corresponding to a prediscriminated transmission wavelength, and the sub photodetector detects the intensity of the light transmitted through the optical filter. Therefore, the light intensity is more accurately measured by calibrating the intensity according to the wavelength.
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patent: 6043480 (2000-03-01), Sakamoto et al.
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Cao Ba
Kang Min Hee
Koo Kilhun
Lyu Gap Youl
Lauchman L. G
Pearl Cohen Zedek Latzer LLP
Raybit Systems Inc.
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