Heads-up display device for vehicle

Patent metadata

Field	Value
Publication number	US-10670865-B2
Application number	US-201816012573-A
Country	US
Kind code	B2
Filing date	Jun 19, 2018
Priority date	Jun 22, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A head-up display device for a vehicle may include: a light source part configured to generate light; a lens part configured to concentrate the light irradiated from the light source part; a film part configured to make a scattering angle of the light different in horizontal and vertical directions, the light having passed through the lens part; and an image generation part configured to generate image information using the light having passed through the film part.

First claim

What is claimed is:

1. A head-up display device for a vehicle, comprising:
a light source configured to generate light beams;
a lens configured to transmit the light beams irradiated from light source in a forward direction;
a film configured to scatter the light beams transmitted from the lens in horizontal and vertical directions, wherein the film comprises a sheet and a microlens array attached to a surface of the sheet facing the lens, wherein the microlens array comprises a plurality of microlenses arranged in the horizontal and vertical directions, each of the plurality of microlenses having a horizontal curvature and a vertical curvature different from the horizontal curvature such that a horizontal scattering angle of the light beams is different from a vertical scattering angle of the light beams, wherein the plurality of microlenses in odd rows have a horizontal curvature different from that of the plurality of microlenses in even rows; and
an image generator configured to generate, using the light beams having been scattered by the film, an image to be displayed on a windshield of the vehicle.

2. The head-up display device of claim 1 , wherein the light source comprises an LED.

3. The head-up display device of claim 1 , wherein the lens comprises a collimator.

4. The head-up display device of claim 1 , wherein the lens comprises a Fresnel lens.

5. The head-up display device of claim 1 , wherein the film further comprises a plurality of emission microlenses formed on a surface of the sheet facing away, from the lens.

6. The head-up display device of claim 5 , wherein each emission microlens protrudes toward the image generator.

7. The head-up display device of claim 1 , further comprising an anti-reflection layer over any one of the lens and the film so as to prevent light reflection.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Song Ki Hyuk

Classifications

• G02B27/0101 Primary

  characterised by optical features (G02B27/0172 takes precedence) · CPC title

• G02B27/30

  Collimators · CPC title

• G02B19/0014

  at least one surface having optical power · CPC title

• G02B5/0231

  the surface having microprismatic or micropyramidal shape (macroscopic prism arrays G02B5/045) · CPC title

• G02B1/11

  Anti-reflection coatings · CPC title