发明授权
- 专利标题： Light measuring apparatus and light measuring method
- 专利标题（中）： 光测量装置和光测量方法
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申请号： US09447266申请日： 1999-11-23
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公开(公告)号： US06567160B1公开(公告)日： 2003-05-20
- 发明人: Norio Ishikawa , Susumu Shirai
- 申请人： Norio Ishikawa , Susumu Shirai
- 主分类号： G01J110
- IPC分类号： G01J110
摘要：
A light measuring apparatus is provided with a photoelectric conversion element for converting a light energy to an electrical signal, a calculation circuit for calculating a measurement value based on the electrical signal, a memory for storing a correction value, a corrector for correcting the measurement value using the correction value, and a controller for allowing calculation of a recent correction value when the timer measures elapse of a predetermined time, and permitting the memory to renewably store the recent correction value.
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