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UNITÉ D'INTERFÉRENCE DE LUMIÈRE ET DISPOSITIF DE MESURE D'INTERFÉRENCE DE LUMIÈRE
专利权人:
Tatsuta Electric Wire & Cable Co., Ltd.;Nidek Co., Ltd.
发明人:
申请号:
EP18813050.4
公开号:
EP3637041A1
申请日:
2018.05.29
申请国别(地区):
EP
年份:
2020
代理人:
摘要:
A light interference unit (20) includes a branching optical element (21), a multiplexing optical element (23), and at least one fiber device (22). The branching optical element (21) branches a laser light for which an emission wavelength is temporally swept, into a measurement light and a reference light. The multiplexing optical element multiplexes the reference light and the measurement light reflected by an object to be measured, and causes the reference light and the measurement light to interfere. The at least one fiber device includes a reference light device (22A). A transmission light path length is defined by a light path length of the reference light, which transmits the reference light device, from the reference light device to the multiplexing optical element. A reflection light path length is defined by a light path length of the reference light, which is reflected by a separation portion of the reference light device, from the reference light device to the multiplexing optical element. In this case, the transmission light path length is equal to or more than the reflection light path length.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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