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Patent Searching and Data


Title:
OPTICAL FILTER AND OPTICAL PART
Document Type and Number:
WIPO Patent Application WO/2021/200005
Kind Code:
A1
Abstract:
In the transmission spectrum of this optical filter, the minimum value of transmittance in the wavelength range of 550-650 nm is 20-60%, and falls within the range of 570-620 nm. The optical filter contains at least one absorbing pigment. The absorbing pigment is a tetraazaporphyrin-based pigment having a central metal, which is nickel or cobalt, and a substituent, which is based on fluorobenzo.

Inventors:
KONDO TOMO
WADA HIDEKI
TSUBAKINO YURIKA
Application Number:
PCT/JP2021/009693
Publication Date:
October 07, 2021
Filing Date:
March 10, 2021
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02B5/22; G02C7/02; G02C7/10
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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