Optics: measuring and testing – Photometers – Integrating spheres
Reexamination Certificate
2008-10-16
2010-02-16
Nguyen, Sang (Department: 2886)
Optics: measuring and testing
Photometers
Integrating spheres
C356S213000, C356S445000, C250S228000, C250S330000
Reexamination Certificate
active
07663744
ABSTRACT:
A mirror is provided with a light source window and an illumination window each establishing communicative connection between an inner face side and an outer side of a hemispherical unit. The light source window is an opening to which a light source OBJ to be measured is attached mainly. The illumination window is an opening for guiding a flux of light from a correcting light source used for measurement of self-absorption toward the inner face of the hemispherical unit. A self-absorption correcting coefficient of the light source OBJ is calculated based on an illuminance by a correcting flux of light in a case where the light source to be measured OBJ in a non-light emitting state is attached to the light source window and an illuminance by a correcting flux of light in a case where a calibration mirror is attached to the light source window.
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Ditthavong Mori & Steiner, P.C.
Nguyen Sang
Otsuka Electronics Co., Ltd.
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