Title:
OPTICAL ELEMENT AND ILLUMINATION APPARATUS INCLUDING OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2024/048034
Kind Code:
A1
Abstract:
The present invention provides an optical element capable of arbitrarily processing light incident from a light source and an illumination apparatus including the optical element. An optical element (120) comprises a liquid crystal cell (130), a λ/4 film (150) on the liquid crystal cell, and a reflective plate (160) on the λ/4 film. The liquid crystal cell includes a plurality of first electrodes (136), a first alignment film (142) on the first electrodes, a liquid crystal layer (140) located on the first alignment film, a second alignment film (144) on the liquid crystal layer, and a plurality of second electrodes (138) located on the second alignment film. The plurality of first electrodes extend in a first extension direction and are arranged in a stripe form. The liquid crystal layer contains liquid crystal molecules. The plurality of second electrodes are arranged in a stripe form and extend in a second extension direction that intersects the first extension direction at an angle of 80°-90° inclusive.
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Inventors:
KOITO TAKEO (JP)
IKEDA KOJIRO (JP)
IKEDA KOJIRO (JP)
Application Number:
PCT/JP2023/023319
Publication Date:
March 07, 2024
Filing Date:
June 23, 2023
Export Citation:
Assignee:
JAPAN DISPLAY INC (JP)
International Classes:
G02F1/13; G02F1/13363; G02F1/1337; G02F1/1343; G02F1/1347
Foreign References:
| US20190377248A1 | 2019-12-12 | |||
| JP2018189913A | 2018-11-29 | |||
| US20180196318A1 | 2018-07-12 | |||
| US20050057701A1 | 2005-03-17 |
Attorney, Agent or Firm:
TAKAHASHI, HAYASHI AND PARTNER PATENT ATTORNEYS, INC. (JP)
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