US 11,906,735 B2 · Head-up display device

Abstract

A head-up display device (10) includes one picture generation unit (20) that emits both first light (L1) and second light (L2) and includes an optical path adjuster (40) disposed in an optical path of at least one of the first light (L1) and the second light (L2) and having light transmission properties and substantially zero optical power. The optical path adjuster (40) gradually separates the first light (L1) and the second light (L2) as compared with a state before at least one of the first light (L1) and the second light (L2) enters the optical path adjuster (40) in such a manner that the first light (L1) creates a first virtual image (V1) in a position closer to an operator and the second light (L2) creates a second virtual image (V2) in a position farther from the operator than the first virtual image (V1).

Claims9

Dependent claims

A head-up display device configured to display a first virtual image in front of an operator's point of view and a second virtual image in a position farther than the first virtual image,

the head-up display device comprising:
one picture generation unit configured to emit first light which creates the first virtual image and second light which creates the second virtual image;
a prism disposed on an optical path of the second light;
a first convex mirror configured to reflect the first light;
a second convex mirror configured to reflect the second light;
and
one concave mirror configured to reflect the first light reflected from the first convex mirror and the second light reflected from the second convex mirror toward a windshield.

4 more elements

Dependencies are inferred from the claim text.

Head-up display device

Life of this patent

Head-up display device

Life of this patent

Abstract

Claims9