Patent ID: 11933979
Assignee: NITTO DENKO CORPORATION
Field: Optics (Instruments)
Classification: CPC B  G  C | IPC C  G

Claim 0:
1. A head-up display apparatus, comprising:
a display unit configured to emit projection light, the display unit including
a display cell, and
a first polarizing plate with a retardation layer, which is arranged on an emission side of the display cell, and which includes a polarizer and a first retardation layer in the stated order from a display cell side;

at least one reflector configured to reflect the projection light; and
a second polarizing plate with a retardation layer, which is arranged on a reflection surface of the reflector, and which includes a polarizer and a second retardation layer in the stated order from a reflector side,
wherein the first retardation layer and the second retardation layer each have an in-plane retardation Re(550) of from 100 nm to 200 nm.