Photometry device with correction for temperature change
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United States of America Patent
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Feb 18, 1997
Grant Date -
N/A
app pub date -
May 11, 1995
filing date -
Jun 23, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A photometry device provides accurate photometry outputs over temperature by correcting light sensitivity variations of a light receiving element due to temperature variations. The photometry device includes the light receiving element, a light sensitivity detection device and a light sensitivity correction device. A correction formula is determined from the outputs of the light sensitivity corrections device generated at a standard condition and a condition other than the standard condition. The light sensitivity correction device corrects the outputs of the light receiving elements based on the correction formula.
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