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Transmissive screen and head-up display device using same

A head-up display, transmissive technology, applied to projectors, projection devices, instruments, etc. with built-in screens/external screens, can solve problems such as excessive pixel bright spots, and achieve the effect of maintaining sharpness

Inactive Publication Date: 2017-10-13
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, it is known that excessive pixel bright spots occur when a 1-piece microlens array is used

Method used

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  • Transmissive screen and head-up display device using same
  • Transmissive screen and head-up display device using same
  • Transmissive screen and head-up display device using same

Examples

Experimental program
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Embodiment Construction

[0045] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a figure which shows the vehicle 5 equipped with the head-up display apparatus 100 which concerns on embodiment of this invention. also, figure 2 It is a diagram showing the configuration of the head-up display device 100 according to the embodiment of the present invention. In addition, the drawings described below are schematic diagrams, and may differ from actual shapes, dimensions, and arrangements.

[0046] The head-up display device 100 according to the embodiment of the present invention is mounted on the vehicle 5 or the like, and projects speed information display or navigation information display or the like from the projection unit 85 as a virtual image on the windshield 6 or is installed between the driver and the windshield 6 . on a compositor (not shown) in between, so that the virtual image is superimposed and displayed in the foreground o...

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PUM

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Abstract

In order to provide a transmissive screen with which it is possible to maintain image sharpness, without adversely affecting the uniformity of exiting light exiting the screen, this transmissive screen 40 has a microlens array base material 50 which has a first surface 51 provided with a microlens array 54 including a plurality of microlenses, and a light-diffusing base material 60 which has a second surface 61 provided with a light-diffusing surface. The transmissive screen is characterized in that the first surface 51 of the microlens array base material 50 where the microlens array is provided and the second surface 61 of the light-diffusing base material 60 where the light-diffusing surface is provided are arranged facing one another.

Description

technical field [0001] The present invention relates to a transmissive screen capable of suppressing reduction in luminance at the periphery of an image, and a head-up display device using such a transmissive screen. Background technique [0002] For example, a head-up display (HUD) device for a vehicle projects driving information (for example, a speed display or a navigation display, etc.) as a virtual image superimposed on the side opposite to the windshield when viewed by the driver, that is, the forward field of view. on the foreground. According to the display system for a vehicle using such a HUD, it is possible to minimize movement of the driver's line of sight when visually checking driving information. [0003] In addition, in the field of the above-mentioned head-up display or projector, a technique of using a microlens array (MicroLens Array: MLA) as a transmissive screen has been proposed. [0004] In particular, in the field of head-up displays, the reason fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/62G02B3/00G02B5/02G02B26/10G02B27/01G02B27/48G03B21/00G03B21/10
CPCG02B3/00G02B5/02G02B26/10G02B27/01G02B27/48G03B21/10G03B21/60G03B21/625G02B3/0056G02B5/0221G02B5/0278G02B27/0101G02B2027/0118
Inventor 久保田翔吾
Owner DAI NIPPON PRINTING CO LTD
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