Head-up display for a vehicle

• US 10,035,419 B2
• Filed: 12/29/2016
• Issued: 07/31/2018
• Est. Priority Date: 12/29/2015
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Banyay, Matus, Haefner, Marcus
• Primary Examiner(s): Cheng, Joe H
• Application Number:
  US15/393,446
• Publication Number:
  US 20170182888A1
• Time in Patent Office: 579 Days
• CPC Class Codes: B60K 2360/334 Projection means
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/23 Head-up displays [HUD] optical aspects of head-up displays G02B27/01
• CPC Class Codes: B60R 2300/205 using a head-up display
• CPC Class Codes: B60R 2300/308 by overlaying the real scene, e.g. through a head-up display on the windscreen
• CPC Class Codes: B60Y 2400/92 Driver displays
• CPC Class Codes: G02B 2027/013 comprising a combiner of particular shape, e.g. curvature
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/0194 with combiner of laminated type, for optical or mechanical aspects
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/281 used for attenuating light intensity, e.g. comprising rotatable polarising elements
• CPC Class Codes: G02B 5/22 Absorbing filters G02B5/201 - G02B5/208 take precedence
• CPC Class Codes: G02B 5/3025 Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state G02B5/3008, G02B5/3016 take precedence
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

The disclosure relates to a head-up display for a vehicle. The head-up display includes a combiner screen that is arranged between a viewer and a window pane of the vehicle. The combiner screen reflects an image, which is generated by an image generating and imaging device at a front-side reflection surface, which faces the viewer, to the viewer. The viewer can perceive the generated image as an imaginary image located behind the combiner screen. A polarization filter is attached on a rearward side, which is remote from the viewer, of the reflection surface of the combiner screen.

Claims

1. A head-up display for a vehicle, comprising:

a combiner screen having two partial screens arranged one behind the other arranged between a viewer and a window pane to reflect an image;

an image generating and imaging device to generate the image at a front-side reflection surface to the viewer, wherein the viewer can perceive the image as an imaginary image located behind the combiner screen; and

a polarization filter attached on a rearward side of the reflection surface, within the combiner screen between the two partial screens and remote from the viewer.

2. The head-up display as claimed in claim 1, wherein the polarization filter is a filter that polarizes in a p-direction.

3. The head-up display as claimed in claim 1, wherein the polarization filter covers an entirety of the rearward side of the reflection surface of the combiner screen.

4. The head-up display as claimed in claim 1, wherein the polarization filter is further attached on a rear side of the first partial screen.

5. The head-up display as claimed in claim 1, wherein the polarization filter is configured in a shape of a wedge.

6. A vehicle comprising:

a combiner screen having first and second partial screens, wherein the first partial screen is behind the second partial screen, disposed adjacent a window within a cabin;

an imaging device to produce a reflected image on the combiner screen at a front-side reflection surface such that the reflected image is perceived as an imaginary image behind the combiner screen; and

a wedge film disposed between the first and second partial screens attached on a rearward side of the reflection surface.

7. The vehicle as claimed in claim 6, wherein the rearward side of the reflection surface is remote from a viewer.

8. The vehicle as claimed in claim 6, wherein the front-side reflection surface faces a viewer within the cabin.

9. The vehicle as claimed in claim 6, wherein the combiner screen is disposed between the window and a viewer in the cabin.

10. The vehicle as claimed in claim 8, wherein the combiner screen has a wedge-shape configuration such that the wedge film disposed between the first and second partial screens.

11. A display system for a vehicle comprising:

a combiner screen configured to reflect an image between a window pane and a viewer disposed within a cabin and including first and second partial screens;

an imaging device configured to generate the image on a reflection surface toward the viewer such that the image faces the viewer and is perceived as an imaginary image behind the combiner screen; and

a p-direction polarization filter disposed between the first and second partial screens such that the polarization filter is behind the first partial screen and in front of the second partial screen.

12. The display system of claim 11, wherein the polarization filter is a wedge film and oriented such that the first and second partial screens of the combiner screen form a wedge shape.

13. The display system of claim 11, wherein the polarization filter covers an entire rear side of the reflection surface.

14. The display system of claim 11, wherein the imaginary image is disposed with a virtual image plane in front of the viewer.

15. The display system of claim 11, wherein the window pane includes reflections absorbed by the polarization filter.

16. The display system of claim 15, wherein the reflections of the window pane are perceived by the viewer in a second virtual image plane.