Provided is a headup display device that suppresses luminance variance of diffusion light with respect to an obliquely disposed screen. A screen is tilted with respect to an orthogonal plane that is orthogonal to an optical axis of projection light. In the cases where the screen and the optical axis of the projection light are orthogonal to each other, a center line of a distribution angle (β) of diffusion light is set such that the center line tilts in a direction with respect to an output surface of the screen, said direction being identical to a tilt direction of the screen.
HEADUP DISPLAY DEVICE
2021-03-04
Patent
Electronic Resource
English