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Display device and adjustment method

A display device and adjustment technology, applied in transportation and packaging, optics, instruments, etc., can solve problems such as inability to focus on the foreground and virtual image observation

Active Publication Date: 2019-04-16
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the position of the viewpoint on the foreground of the vehicle and the display position of the virtual image are not at the same distance from the eyes of the driver, the driver cannot focus on the foreground and the virtual image at the same time for observation.

Method used

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  • Display device and adjustment method
  • Display device and adjustment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031]

[0032] figure 1 It is a schematic diagram showing an example of the configuration of the virtual image display device 100 according to the first embodiment. The virtual image display device 100 is, for example, a head-up display for a vehicle. The virtual image display device 100 is mounted, for example, on a dashboard 610 of a vehicle 600 . However, the virtual image display device 100 is not limited to a head-up display, and the installation location is not limited to an instrument panel.

[0033] The virtual image display device 100 has an image display unit 110 and a control unit 130 . The virtual image display device 100 can have a magnifying mirror 140 . The image display unit 110 has a light source unit 111 and a screen 120 .

[0034] The light source unit 111 emits image light like a projector, for example. "Image light" refers to light having image information. The image light emitted from the light source unit 111 has information of an image reflect...

Deformed example 1

[0214] Next, a modified example of the virtual image for adjustment used for adjusting the position of the virtual image will be described.

[0215] Figure 9 (a) and Figure 9 (b) is an explanatory diagram showing an example of an image for adjusting a virtual image position. Figure 9 (a) is an example in which an adjustment image is projected on the short-distance virtual image screen 120a. Figure 9 (b) is an example in which an adjustment image is projected on the remote virtual image screen 120b. Figure 9 (a) and Figure 9 (b) is a diagram viewed by the driver 500 through the magnifying mirror 140 .

[0216] The short-distance adjustment intermediate image 122c is projected above the short-distance projection area 121a in the area of ​​the short-distance virtual image screen 120a. The short-distance adjustment intermediate image 122c is an oblique figure.

[0217] exist Figure 9 In (a), the short-distance adjustment intermediate image 122c is a strip-shaped figu...

Deformed example 2

[0276] In the previous embodiment, the driver 500 visually recognizes the virtual image area 400 vertically. However, in Modification 2, the virtual image area 400 is inclined.

[0277] Figure 13 It is a schematic diagram showing an example of the configuration of a virtual image display device 161 according to Modification 2.

[0278] The tilted screen 120t is tilted with respect to the optical axis C of the light source 111 . Therefore, the inclined virtual image area 400t visually recognized by the driver 500 is inclined such that the upper end is farther than the lower end. That is, the inclined virtual image area 400t is inclined such that the higher position is farther than the lower position when viewed from the driver 500 . The virtual image projected into the inclined virtual image region 400t has a depth with a distance from the virtual image. That is, the virtual image projected into the inclined virtual image area 400t has portions displayed at different dista...

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Abstract

A display device that is used in a vehicle in order to display a virtual image is provided with: a picture display unit (110) including a light source unit (111) that emits picture light and a screen(120) on which the picture light is projected; and a control unit (130) that adjusts a position at which the virtual image (400) is displayed. The virtual image (400) includes a first virtual image and a second virtual image that is displayed at a position different from that of the first virtual image. The picture display unit (110) displays, on the screen (120), a first adjustment image (113a) that is projected on a display area (400a) of the first virtual image and a second adjustment image (113b) that is projected on a display area (400b) of the second virtual image. The control unit (130)adjusts the position of the display area (400a) of the first virtual image and the position of the display area (400b) of the second virtual image on the basis of the first adjustment image (113a) and the second adjustment image (113b).

Description

technical field [0001] The present invention relates to a display device for displaying a virtual image, such as a head-up display used in vehicles such as automobiles and trains. Background technique [0002] A head-up display (Head Up Display, hereinafter referred to as HUD) for a vehicle displays driving support information as a virtual image in front of a windshield as viewed from the driver. Driving assistance information is, for example, speed display or navigation information. The driver can visually recognize the vehicle's foreground and driving assistance information. The vehicle's foreground and driver assistance information overlap. Therefore, the driver can shorten the movement time of the line of sight and the adjustment time of the focus during driving. As a result, driver fatigue can be reduced and safety can be improved. "Foreground" refers to the scenery that can be seen ahead. [0003] The driver drives while observing the surrounding conditions. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01B60K35/00
CPCB60K35/00G02B27/01G02B2027/0154G02B2027/0185B60K35/23B60K35/28B60K2360/177B60K2360/334B60K35/90B60K35/60B60K2360/785G02B27/0101G02B2027/014G02B2027/0187
Inventor 岸上智竹下伸夫道盛厚司中原彰太
Owner MITSUBISHI ELECTRIC CORP