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Virtual image display apparatus

A technology of a virtual image display device and wavelength band, which is applied in the directions of light guides, optics, instruments, etc., can solve problems such as the reduction of the recognition degree of virtual images

Inactive Publication Date: 2013-10-23
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, especially in the case of a virtual image display device such as a see-through HMD in which the outside scenery is viewed as a background through transmission, there is a problem that the visibility of the virtual image observed by the observer is significantly reduced.

Method used

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Experimental program
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no. 1 approach

[0035] virtual image display device

[0036] First, the configuration of the virtual image display device according to the first embodiment will be described with reference to the drawings. figure 1 It is a schematic diagram which shows the schematic structure of the virtual image display apparatus which concerns on 1st Embodiment. The virtual image display device according to the first embodiment is a head-mounted display (HMD) that is worn on the head of an observer to display an image (virtual image), and includes an electro-optical device that emits light for forming an image, that is, image light. organic EL device.

[0037] like figure 1 As shown, the virtual image display device 100 according to the first embodiment includes an organic EL device 1, a collimator 110, a light guide 120, a reflective volume hologram layer 132 as a first reflective volume hologram layer, and a second The reflective volume holographic layer 130 of the two reflective volume holographic lay...

no. 2 approach

[0092] Next, the configuration of the virtual image display device according to the second embodiment will be described. The configuration of the organic EL device of the virtual image display device according to the second embodiment is different from that of the first embodiment, but other configurations are substantially the same. Therefore, the configuration of the organic EL device according to the second embodiment will be described with reference to the drawings.

[0093] Organic EL Device

[0094] Image 6 It is a schematic cross-sectional view showing the structure of the organic EL device according to the second embodiment. The organic EL device 1A according to the second embodiment is different from the organic EL device 1 of the first embodiment in that it does not include a color filter, but the other configurations are substantially the same. In addition, the same code|symbol is attached|subjected to the component common to 1st Embodiment, and the description ...

Deformed example 1

[0101] The virtual image display device 100 according to the above-described embodiment is configured to include the reflective volume hologram layer 132 at a position facing the light entrance of the light guide 120 and a reflective volume hologram layer 132 at a position facing the light exit port. layer 130, but the present invention is not limited in this way. The virtual image display device may be configured to include an optical path change such as a mirror instead of the reflective volume hologram layer at either a position facing the light entrance of the light guide 120 or a position facing the light exit port. unit. If the virtual image display device includes a reflective volume hologram layer in at least one of the positions facing the light entrance of the light guide body 120 or the positions facing the light exit port, it is possible to selectively utilize the required information for displaying the virtual image. wavelength of light.

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PUM

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Abstract

The invention relates to a virtual image display apparatus which includes an organic EL device that outputs light having one kind of wavelength band, a light guide member, and a reflection-type volume hologram that is disposed on a first face of the light guide member and diffracts and reflects light of a predetermined wavelength band of the light that has entered. The organic EL device includes an optical resonance structure that causes the above-mentioned light of one-kind wavelength band to resonate.

Description

technical field [0001] The present invention relates to a virtual image display device. Background technique [0002] There is known a virtual image display device that uses image light emitted from an electro-optical device such as a liquid crystal (LC: Liquid Crystal) device and an organic EL (Electro Luminescence) device by guiding light through a virtual image optical system to allow an observer to observe (for example, refer to Patent Document 1). ). The virtual image display device is used, for example, as a head-mounted display (HMD), which is a head-mounted display device that has become popular in recent years. [0003] The virtual image display device described in Patent Document 1 includes a reflective volume hologram layer that selectively diffracts and reflects light of a specific wavelength band in the virtual image optical system. This virtual image display device is configured such that light emitted from the electro-optical device (image forming unit) is d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B5/32
CPCG02B27/0172G02B6/00G02B2027/0118H01L51/5203H01L51/5265G02B27/0103H10K50/852H10K59/30H10K59/38H10K50/805H10K50/85
Inventor 藤川洋一横山修窪田岳彦
Owner SEIKO EPSON CORP