PROBLEM TO BE SOLVED: To provide a head-up display capable of blocking entry of external light into an optical system to appropriately prevent degradation in visibility of virtual images.SOLUTION: A head-up display presents a virtual image to a viewer by having display light reflected on a windshield 25 of a vehicle. The head-up display includes a light source unit 1, a screen 2, a cover 5, and a light absorber 6. The light source unit 1 and the screen 2 are configured to project the display light toward the windshield 25 via a concave mirror 3. The cover 5 covers an opening on a dashboard 29, and is configured to transmit light of particular wavelengths only and reflect or absorb light of other wavelengths. The light absorber 6 absorbs external light reflected by the cover 5. The cover 5 transmits at least the display light.SELECTED DRAWING: Figure 1
ヘッドアップディスプレイ
2019-03-27
Patent
Electronic Resource
Japanese