Unlock instant, AI-driven research and patent intelligence for your innovation.

Head-up display apparatus

A head-up display and equipment technology, which can be applied to TVs, color TVs, and components of color TVs, etc., and can solve problems such as the degradation of the use efficiency of light beams

Inactive Publication Date: 2015-03-11
DENSO CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, disadvantageously, the utilization efficiency of the light bundle degrades

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Head-up display apparatus
  • Head-up display apparatus
  • Head-up display apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example ）

[0026] figure 1 is a schematic diagram showing a vehicle in which the head-up display device according to the first embodiment of the present disclosure is installed. figure 2 is a diagram describing the arrangement of the head-up display device in the vehicle according to the first embodiment. image 3 is a diagram describing the structure and operation of the laser scanner of the first embodiment. Figure 4 is a perspective view of the screen part of the head-up display device of the first embodiment.

[0027] The head-up display device 100 of the first embodiment is housed in the instrument panel of the vehicle 1 . In the head-up display device 100 , the display image 71 is projected onto the display component (for example, the windshield 90 of the vehicle 1 ), so that the viewer (driver) can view the image from the preset dominant eye in the preset eye box 60 . The virtual image 70 of the displayed image 71 is visually recognized by the box 60a and the two preset sub-e...

no. 2 example ）

[0056] In the first embodiment, the two auxiliary curved surfaces 32b are provided on two opposite sides of the main curved surface 32a, respectively. In the case where the main curved surface 32a and the auxiliary curved surface 32b are formed in the above-described manner, when the viewpoint 61 moves away from the main eye box 60a and is placed in the sub-eye box 60b, the amount of light changes rapidly, and thus, the brightness of the virtual image 70 rapidly decreases, Such as Figure 9 shown. Therefore, a viewer may have an uncomfortable feeling about a rapid change in brightness.

[0057] Therefore, in the second embodiment, as Figure 10 As shown, a connection surface (also referred to as a transition surface) 32c is formed as a curved surface along the x-axis between the main curved surface 32a and each auxiliary curved surface 32b. In a longitudinal section of optical element 32 taken along the x-axis (i.e., along Figure 4 In the section taken by the line V-V in)...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A screen member has a plurality of optical elements, each of which includes a primary curved surface and two secondary curved surface. The primary curved surface diffuses a bundle of rays of light toward a main-viewing range through a display member. Each secondary curved surface diffuses the bundle of rays of light toward a corresponding sub-viewing range through the display member. A radius of curvature of the primary curved surface is larger than a radius of curvature of the secondary curved surface.

Description

technical field [0001] The present disclosure relates to a head-up display device. Background technique [0002] For example, JPH07-270711A teaches a head-up display device in which light beams are diffused by a screen part, and the light beams diffused by the screen part are projected onto the display part as a display image, so that the viewer can see the display The virtual image of the image. [0003] The screen part of the head-up display device of JPH07-270711A is an optical part in which a plurality of micro-optical elements are arranged in a lattice pattern to transmit or reflect light beams incident on the corresponding micro-optical elements. Micro-optical elements are generally called microlenses or micromirrors, and each of the microlenses or micromirrors is configured in a rectangular form in a view taken in a direction perpendicular to the plane of the screen part. These microlenses or micromirrors are arranged in a lattice pattern to form a microlens array o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/01B60K35/00G09F9/00H04N5/74
CPCG02B3/0006G02B2027/0118G02B5/02G02B27/0101G02B27/01
Inventor 藤川卓之
Owner DENSO CORP