发明名称 |
Optical filter, optical filter module, spectrometric measurement apparatus, and optical apparatus |
摘要 |
An optical filter includes: a first variable wavelength bandpass filter that can extract light of a first wavelength band (400 to 460 nm) , the first wavelength band having a first spectral band having a central wavelength equal to a first wavelength in the first wavelength band and a second spectral band having a central wavelength equal to a second wavelength in the first wavelength band; and a second variable wavelength bandpass filter that can extract light of a second wavelength band (480 to 540 nm) adjacent to the first wavelength band, the second wavelength band having a third spectral band having a central wavelength equal to a third wavelength in the second wavelength band and a fourth spectral band having a central wavelength equal to a fourth wavelength in the second wavelength band. |
申请公布号 |
EP2405294(A1) |
申请公布日期 |
2012.01.11 |
申请号 |
EP20110172493 |
申请日期 |
2011.07.04 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
MATSUSHITA, TOMONORI;URUSHIDANI, TATSUO |
分类号 |
G02B26/00;G02B5/28 |
主分类号 |
G02B26/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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