Title:
POLARIZATION DIFFRACTION ELEMENT, OPTICAL ELEMENT AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070693
Kind Code:
A1
Abstract:
Provided are a polarization diffraction element, an optical element, and an optical device that can reduce components that can become stray light. When clockwise polarized light with an ellipticity εin of 0.95 or more is incident on the polarization diffraction element, the zero-order light transmitted through the polarization diffraction element is counterclockwise polarized light, linearly polarized light, or clockwise polarized light with an ellipticity ε0 that satisfies the relationship of formula (1), and when counterclockwise polarized light with an ellipticity εin of 0.95 or more is incident on the polarization diffraction element, the zero-order light transmitted through the polarization diffraction element is clockwise polarized light, linearly polarized light, or counterclockwise polarized light with an ellipticity ε0 that satisfies the relationship of formula (1): ellipticity εin - ellipticity ε0 ≥ 0.05.
Inventors:
SATO HIROSHI (JP)
YONEMOTO TAKASHI (JP)
TANI TAKEHARU (JP)
YONEMOTO TAKASHI (JP)
TANI TAKEHARU (JP)
Application Number:
PCT/JP2023/033365
Publication Date:
April 04, 2024
Filing Date:
September 13, 2023
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/18; G01S7/481; G02B5/30; G02B27/02; G02F1/13; G02F1/1337
Domestic Patent References:
| WO2022050321A1 | 2022-03-10 | |||
| WO2022050319A1 | 2022-03-10 | |||
| WO2022045167A1 | 2022-03-03 | |||
| WO2020230700A1 | 2020-11-19 | |||
| WO2021220794A1 | 2021-11-04 |
Foreign References:
| JP2012009126A | 2012-01-12 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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