| 摘要 |
By forming a detection-membrane with a light reflective layer in which the detection-membrane is a multilayer construction with a protective layer, a detection-membrane can be provided which is able to be used favorably within an optical sensor, will suffer no reduction in mechanical strength as a result of external factors such as physical pressure, high temperature, high humidity or the like, and will cause no deterioration in the characteristics of an optical sensor, and an optical sensor which utilizes such a detection-membrane can also be provided.
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