HEAD-UP DISPLAY DEVICE

• US 20160266383A1
• Filed: 10/16/2014
• Published: 09/15/2016
• Est. Priority Date: 11/06/2013
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: LIU, Heng
• Granted Patent: US 9,766,455 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 2360/20 Optical features of instruments
• CPC Class Codes: B60K 2370/1529 Head-up displays
• CPC Class Codes: B60K 2370/20 Optical features of instruments
• 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: G02B 2027/011 comprising device for correcting geometrical aberrations, distortion
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0152 involving arrangement aiming to get lighter or better balanced devices
• CPC Class Codes: G02B 2027/0154 with movable elements
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/0149 characterised by mechanical features G02B27/0176 takes precedence

Abstract

A head-up display device that is to be equipped to a moving body and displays an image projected on a projection surface of the moving body to be visually recognized as a virtual image from an inside of the moving body includes a light source, an image displaying panel and a common mirror. The image displaying panel luminously displays an image using a light of the light source passing through a first optical path and projecting the image on the projection surface via a second optical path. The common mirror reflects and leads the light of the light source toward the image displaying panel in the first optical path, and a light of the image toward the projection surface in the second optical path.

Claims

1. A head-up display device to be equipped to a moving body and displaying an image projected on a projection surface of the moving body to be visually recognized as a virtual image from an inside of the moving body, the head-up display comprising:

a light source emitting a light;

an image displaying panel luminously displaying an image using the light of the light source passing through a first optical path and projecting the image on the projection surface via a second optical path; and

a common mirror reflecting and leading the light of the light source toward the image displaying panel in the first optical path, and reflecting and leading a light of the image toward the projection surface in the second optical path.

2. The head-up display device according to claim 1, wherein

the image displaying panel is a transmissive liquid crystal panel, and

the image displaying panel is illuminated in a direction normal to the image displaying panel.

3. The head-up display device according to claim 1, further comprising:

a range setting member disposed between the light source and the common mirror in the first optical path and setting an illumination range to illuminate the image displaying panel; and

an angle setting member disposed between the common mirror and the image displaying panel in the first optical path and setting an emitting angle of a light to be emitted to the image displaying panel.

4. The head-up display device according to claim 1, further comprising:

a range setting member disposed between the light source and the common mirror in the first optical path and setting an illumination range to illuminate the image displaying panel; and

an adjusting mechanism adjusting a position of the range setting member.

5. The head-up display device according to claim 1, wherein the common mirror is a plane mirror.

6. The head-up display device according to claim 1, further comprising:

a range setting member disposed between the light source and the common mirror in the first optical path and setting an illumination range to illuminate the image displaying panel;

an adjusting mechanism adjusting a position of the range setting member; and

an angle setting member disposed between the common mirror and the image displaying panel in the first optical path and setting an emitting angle of a light to be emitted to the image displaying panel.