Vehicle
AssigneesMaxell, Ltd., Hitachi Industry & Control Solutions, Ltd.
InventorsMasahiko Yatsu, Koji Hirata, Shigeki Hoshino
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image forming unit side along the emission direction of the image light.
Claims8
A vehicle comprising:
- a windshield;
- an image forming unit that emits image light containing image information;
- and
- an optical system that displays a virtual image in front of the vehicle by reflecting the image light emitted from the image forming unit on the windshield;
- wherein
- the optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from an image forming unit side along an emission direction of the image light,
- a surface opposing the image forming unit in the concave lens is formed into a flat shape, and
- the concave lens is disposed so that an optical axis of the concave lens is parallel to an optical axis of an emission surface of the image light in the image forming unit.
A vehicle comprising:
- a windshield;
- an image forming unit that emits image light containing image information;
- and
- an optical system that displays a virtual image in front of the vehicle by reflecting the image light emitted from the image forming unit on the windshield;
- wherein
- the optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from an image forming unit side along an emission direction of the image light,
- the image forming unit includes a laser light source, a light scanning section that light-scans the laser light source by rotation of a reflection surface, and a screen plate that has a diffusion function, and
- the concave lens is disposed so that an optical axis of the concave lens is parallel to an optical axis of the screen plate.
Dependencies are inferred from the claim text.