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Patent Searching and Data


Title:
FILTER ARRAY AND OPTICAL DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/235151
Kind Code:
A1
Abstract:
A filter array according to the present invention is arrayed two-dimensionally and comprises a plurality of filters, each of which have differing transmission spectrums. The plurality of filters include: a first filter having a first peak group including a first peak and second peak, the transmission spectrums of which are adjacent to each other; and at least one second filter having a second peak group including a third peak and fourth peak, the transmission spectrums of which are adjacent to each other, and in the plurality of peaks included in the second peak group, the wavelength of the third peak is closest to the wavelength of the first peak. A first interval between the wavelength of the first peak and the wavelength of the second peak is different from a second interval between the wavelength of the third peak and the wavelength of the fourth peak. If the absolute value of the difference between the first interval and second interval is ΔFSR, and the half width of the first peak is σ, ΔFSR / σ ≥ 0.25.

Inventors:
YAKO MOTOKI
ISHIKAWA ATSUSHI
HISADA KAZUYA
Application Number:
PCT/JP2021/015828
Publication Date:
November 25, 2021
Filing Date:
April 19, 2021
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01J3/26; G01J3/51; G02B5/28
Foreign References:
JP2020053910A2020-04-02
US20150015692A12015-01-15
JP2008529092A2008-07-31
JPH0836157A1996-02-06
JP2018180539A2018-11-15
US9599511B22017-03-21
US9466628B22016-10-11
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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