Patent ID: 9454039
Filing Date: 2016-09-27
CPC Classification: G02B,G02F

Claim Text:
1. A display device for a vehicle comprising: a display which emits an emission display light having a polarization plane only in a horizontal direction; an illumination light source which illuminates the display; a phase difference plate, a λ/4 plate, which is disposed facing the display in a state where a fast axis is shifted by 45 degrees with respect to the polarization plane of the emission display light emitted by the display; an adjusting mechanism which variably adjusts an incident angle of a final display light incident on a windshield of the vehicle such that the final display light is incident on the windshield at Brewster's angle as the incident angle, wherein the final display light indicates a display light transmitted through the phase difference plate; and a rotating mechanism which rotates the phase difference plate at an arbitrary angle.