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Optical system for augmented reality device

An augmented reality and optical system technology, applied in the field of optical systems, can solve the problems of difficult field of view and large field of view in the enhanced part of the enhanced display device, and achieve field of view matching, enlargement of field of view, The effect of small color difference

Inactive Publication Date: 2017-06-13
上海乐蜗信息科技有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide an optical system for an augmented reality device, which can solve the problem that the viewing angle of the enhanced part of the existing augmented display device is difficult to be as large as that of the real part

Method used

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  • Optical system for augmented reality device

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such as Figure 1-6 As shown, the present invention provides an optical system of an augmented reality device, including optical units, and each optical unit sequentially includes an absorbing polarizer 2, a display screen 3, and a 1 / 8 or 1 / 4 wave plate from the side of the human eye 1 4 and reflection-transmission beam splitter 5, wherein,

[0032] The absorbing polarizer 2 , the display screen 3 , the 1 / 8 wave plate, and the 1 / 4 wave plate 4 (phase retarder) are all optically transparent components, and the light emitted by the display screen 3 is linearly polarized light. Here, in this embodiment, a transparent display screen is arranged between the reflection-transmission beam splitter and the human eye, and polarizing devices and 1 / 8 or 1 / 4 wave plates are respectively arranged on both sides of the display screen, so that the display screen is se...

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Abstract

The invention provides an optical system for an augmented reality device. A transparent display screen is arranged between the human eyes and a reflection and transmission light splitter, the two sides of the display screen are provided with a polarizing device and a 1 / 8 or 1 / 4 wave plate, the display screen is set to be transparent, and augmented content can be reflected and then forms a virtual image to be seen by the human eyes; in addition, light in reality can pass through the display screen, the human eyes can see the reality, linear polarization light transmitted from the front face of the display screen is absorbed by an absorption type polarization device and cannot enter the human eyes, stray light is effectively cut off, linear polarization light transmitted from the back face of the display screen is sequentially transmitted by the 1 / 8 or 1 / 4 wave plate, reflected by the reflection and transmission light splitter, transmitted by the 1 / 8 or 1 / 4 wave plate, transmitted by the display screen, and transmitted by the absorption type polarization device, and then enters the human eyes, and therefore the view angle of the augmented portion is enlarged.

Description

technical field [0001] The invention relates to the field of computers, in particular to an optical system of an augmented reality device. Background technique [0002] At present, most of the enhanced display devices on the market use a semi-reflective and semi-transparent free-form surface plus a compensation mirror. The optical system of this enhanced display device includes a lens and a display screen from the human eye side, but it is limited by off-axis reflection and human face. , the limitation of the nose, it is difficult to increase the vertical field of view of the enhanced display part, which is basically less than 60 degrees, and it is difficult to match the field of view of the enhanced part and the real part. For example, the application number is CN200810167800.7 The optical system recorded in the patent literature of China has a maximum viewing angle of only 54 degrees, which is far smaller than the visual range of the human eye. [0003] There is also a wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0101G02B2027/0123
Inventor 谢斌
Owner 上海乐蜗信息科技有限公司
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