Distance-measuring sensor

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12228645
APP PUB NO 20220066030A1
SERIAL NO

17521983

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a sensor having a high SN ratio. The sensor includes a light source, a band pass filter; and a light-receiving element, in which the band pass filter includes a cholesteric liquid crystal layer that is a layer obtained by immobilizing a cholesteric liquid crystalline phase, the cholesteric liquid crystal layer has a region where a refractive index nx in an in-plane slow axis direction and a refractive index ny in an in-plane fast axis direction satisfy nx>ny, and in a case where a selective reflection wavelength of the cholesteric liquid crystal layer is represented by λ, the cholesteric liquid crystal layer has a second selective reflection peak at a wavelength λ/2 and a half-width of the second selective reflection peak at λ/2 is 30 nm or less.

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Patent Owner(s)

  • FUJIFILM CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Saitoh, Yukito Minamiashigara, JP 202 944
Sasata, Katsumi Minamiashigara, JP 67 133
Sato, Hiroshi Minamiashigara, JP 974 10580
Taguchi, Takao Minamiashigara, JP 59 270
Watano, Akiko Minamiashigara, JP 35 158

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