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Head-up display device

A head-up display and display technology, applied in the direction of instruments, transportation and packaging, chemical instruments and methods, etc., can solve the problems of reduced visual recognition, black vision, etc., and achieve the effect of excellent visual recognition

Pending Publication Date: 2021-05-14
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such head-up display devices have a problem that their visibility is significantly reduced (in the worst case, blackout) when the driver wears polarized sunglasses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to these embodiments.

[0034] A. The overall structure of the head-up display device

[0035] figure 1 It is a partial sectional schematic diagram explaining the head-up display device which concerns on one Embodiment of this invention. The head-up display device 100 includes: a display unit 11, a polarizer 12 with a first retardation layer, and a display 10 that emits projected light; and at least one reflector (one reflector in the illustrated example) 20 that reflects the projected light. and the polarizer 50 with the second retardation layer provided on the reflective surface of the reflector 20 . Typically, the head-up display device 100 further includes: a housing 30 having an opening 32 and accommodating the display 10 and the reflector 20 therein; and a cover member 40 covering the opening 32 .

[0036] exist figure 1 One reflector 20 is provided in...

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Abstract

Provided is a head-up display device (100) having excellent heat resistance as well as excellent visibility when viewed through polarized sunglasses. This head-up display device (100) comprises: a display (10) which includes a display cell (11) and a first phase difference layer-equipped polarizing plate (12) disposed on the emission side of the display cell (11) and including, in order from the display cell (11) side, a polarizer and a first phase difference layer, and which emits projection light; at least one reflector (20) which reflects the projection light; and a second phase difference layer-equipped polarizing plate (50) which is provided on a reflection surface of the reflector (20) and includes, in order from the reflector (20) side, a polarizer and a second phase difference layer. Each of the first phase difference layer and the second phase difference layer has an in-plane phase difference Re (550) of 100-200 nm.

Description

technical field [0001] The invention relates to a head-up display device. Background technique [0002] The driver of the vehicle drives while looking ahead through the windshield while looking at the instruments on the dashboard. That is, the gauges with the line of sight in front and below move. If it is possible to directly observe instruments while looking ahead, it is expected that drivability (ultimately, safety) will be improved without moving the line of sight. From this idea, a head-up display device has been developed and put into practical use. In the head-up display device, in order to prevent foreign matter such as dust from entering into the case housing the optical system, a cover member covering the opening of the optical path may be provided. Furthermore, in order to prevent an increase in temperature in the housing (specifically, to prevent the incidence of sunlight), a polarizing plate may be bonded to the cover member (for example, Patent Document 1). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01B60K35/00B60R11/02G02B5/30
CPCB60K35/00G02B27/0101G02B5/3033G02B2027/0118B60K35/23B60K2360/25B60K2360/23G02B5/3083G02B1/04G02B5/08C08K5/3725C08K5/375C09D7/63C09B31/057G02B5/3025
Inventor 麻野井祥明渊田岳仁高田胜则
Owner NITTO DENKO CORP