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US 2025/0147399 A1Published application
Optical member, light source device, and head-up display
AssigneeKoito Manufacturing Co., Ltd.
InventorsKeiichiro Nomura, Takanobu Toyoshima, Masahiro Hori
Life of this patent
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Abstract
An optical member includes an optical element and a diffusion portion. In the optical element, a refracting portion disposed in a central portion and a reflecting portion disposed on both sides of the refracting portion extend in a predetermined direction. The diffusion portion is provided in at least one of a region corresponding to an emitted light flux from the refracting portion of the optical element and a region corresponding to an emitted light flux from the reflecting portion.
Claims6
An optical member comprising:
- an optical element in which a refracting portion disposed in a central portion and a reflecting portion disposed on both sides of the refracting portion extend in a predetermined direction;
- and
- a diffusion portion provided in at least one of a region corresponding to an emitted light flux from the refracting portion of the optical element and a region corresponding to an emitted light flux from the reflecting portion.
Dependencies are inferred from the claim text.