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Virtual image display apparatus

A technology of virtual image display and equipment, applied in instruments, stereo photography, optics, etc., can solve problems such as lens aberration and reduced visibility

Inactive Publication Date: 2008-10-29
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Reduced visibility due to lens aberrations (image discontinuity), and

Method used

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Embodiment Construction

[0042] (first embodiment)

[0043] The present invention will be described below with reference to examples.

[0044] In FIG. 1 , a schematic structure of a virtual image display device S1 according to a first embodiment of the present invention is shown, and image information projected from an optical unit 100 is reflected by a translucent reflector 200 so that the image information becomes as a virtual image. From their point of view (eye) 301, 302 is visible to the observer, wherein the virtual images overlap each other at a distance.

[0045] figure 2 The observer's eyes (301, 302) are shown, where the dark part corresponds to the pupil of the eye, the length of the dark part being the diameter of the pupil.

[0046] The optical unit 100 includes a pair of optical projection systems, namely, the optical projection system 10 for the left eye 301 and the optical projection system 20 for the right eye 302 .

[0047] Each optical projection system 10 , 20 has a display devi...

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PUM

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Abstract

A virtual image display apparatus includes a pair of optical projection systems (10, 20), each of which has display device (11), light source (12), and projection lens (13). The image formed on the display device (11) is projected to image position optical system (30) which includes optical focus lens (31) and optical scattering device (32). Light from the optical projection systems (10, 20) is reflected at the translucent reflection device (200) in order to focus at right eye and left eye (301, 302) of observer. As a result, the image can form remote virtual image which can be distinguished by people. Because the optical scattering device (32) scatters lights in such a manner that the light which reaches one of the observing eye can not reach to other observing eyes, so that the image information of the light can be distinguished by the observer without causing cross fire.

Description

technical field [0001] The present invention relates to a virtual image display device which makes a virtual image on a semi-transparent reflection device visible from an observation point by reflecting image information projected from an optical unit on the semi-transparent reflection device and superimposing the virtual image on the foreground. Background technique [0002] This type of virtual image display device is commonly used in display systems where an additional image is displayed as a virtual image on the display in front of the viewer, and the additional image is superimposed onto the image, either already displayed on the display or the forward view and especially as an information display device for entertainment devices such as computer games or automobiles. [0003] It is necessary to increase the perspective of the image on the display by changing the image distance of the virtual image. For example, in the case where image information concerning a forward ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/22G03B35/18
Inventor 藤川卓之安藤浩
Owner DENSO CORP