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

Display module, virtual image display device, and method for manufacturing light-guiding optical device

A technology for optical devices and display modules, applied in optics, optical components, optical components, etc., can solve problems such as difficulty in removing useless light

Active Publication Date: 2022-05-27
SEIKO EPSON CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, when using the aperture limiting unit of the above-mentioned document in an optical system that does not have axial symmetry, part of the light that should be blocked as unnecessary light passes through the opening with axial symmetry, and it is difficult to sufficiently remove unnecessary light. Light

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
  • Display module, virtual image display device, and method for manufacturing light-guiding optical device
  • Display module, virtual image display device, and method for manufacturing light-guiding optical device
  • Display module, virtual image display device, and method for manufacturing light-guiding optical device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0026] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in each of the following figures, in order to make the size of each member recognizable, the size and angle of each member are different from the actual ones.

[0027] figure 1 It is an external perspective view showing the wearing state of the virtual image display device of the present embodiment. figure 2 It is a vertical cross-sectional view of the virtual image display device. image 3 It is a vertical cross-sectional view showing the internal structure of the virtual image display device.

[0028] like figure 1 and figure 2 As shown, the virtual image display device 100 of the present embodiment is a head mounted display (HMD) having an appearance like glasses, and allows the user US wearing the virtual image display device to recognize an image as a virtual image. exist figure 1 and figure 2 , X, Y, and Z are orthogonal coordin...

no. 2 Embodiment approach

[0104] Next, the display module of the second embodiment will be described. The display module of the present embodiment is different from the first embodiment in the position of the optical surface on which the light shielding portion is provided. The same reference numerals are assigned to the same structures and components as those of the first embodiment, and detailed descriptions are omitted.

[0105] Figure 7 It is a cross-sectional view showing the internal structure of the display module 201 of the present embodiment. Figure 7 is the same as that of the first embodiment image 3 In the corresponding drawings, the illustration of components and reference numerals irrelevant to the description is omitted.

[0106] like Figure 7 As shown, in the light guide optical system 112 in the display module 201 of the present embodiment, the prism 22 passes through the incident surface (first optical surface) 22 a , the output surface (second optical surface) 22 c and the 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

Provided are a display module, a virtual image display device, and a manufacturing method of a light guide optical device. Useless light can be well removed. This display module is provided with: a display element; and a light guide optical device that guides the image light emitted from the display element and forms an emission pupil, the light guide optical device being an off-axis optical system that includes a first optical surface, a second optical surface, a first light shielding portion formed on the first optical surface, and a second light shielding portion formed on the second optical surface. The first light-shielding portion exposes a portion of the first optical surface via the first opening, the second light-shielding portion exposes a portion of the second optical surface via the second opening, and the first opening and the second opening have mutually different shapes.

Description

technical field [0001] The present invention relates to a manufacturing method of a display module, a virtual image display device and a light guide optical device. Background technique [0002] The following Patent Document 1 discloses a head-mounted display that removes unnecessary light by providing an aperture restricting means on an incident surface of a prism member constituting an optical system, [0003] Patent Document 1: Japanese Patent Laid-Open No. 2016-90910 [0004] In the above-mentioned document, the opening restricting unit is used in an optical system having axial symmetry, and therefore, the opening shape of the opening restricting unit has axial symmetry. [0005] In an optical system that does not have axial symmetry, the beam widths of the respective image lights differ at positions where the chief rays of the respective image lights overlap. Therefore, for example, when the aperture restricting means of the above-mentioned document is used in an opti...

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 Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0172G02B2027/0178B29D11/00875B29D11/00692G02B2027/013G02B2027/011
Inventor 武田高司
Owner SEIKO EPSON CORP