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Polarizing reflector plate, augmented reality near-to-eye display system and head-mounted display device

A technology of polarized reflection and augmented reality, applied in polarizing elements, optics, instruments, etc., can solve the problems such as the field of view cannot be enlarged, the system design can be improved, and the manufacturing cost is high, and it can achieve excellent imaging effects, high imaging quality, and low cost. Effect

Inactive Publication Date: 2017-02-15
JINHUA VRSEEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are already some AR glasses products on the market today, such as Microsoft products, Israel’s Lumus, etc., but their manufacturing costs are extremely high
[0003] Due to the mutual constraints of various factors, the current system still cannot meet the ideal combination of factors such as large field of view (about 30 degrees or more), good image quality, small size, light weight, and low cost. See-through systems (such as augmented reality AR) further increase the difficulty of system design
Existing systems can be made to be lighter in weight, but the manufacturing cost is high, so the market price is also relatively expensive, and ordinary people cannot accept this price at all
The basic principles of AR glasses on the market are: free-form surface prism projection, holographic waveguide, semi-permeable iterative waveguide, etc. The manufacture of these lenses is extremely complicated and requires extremely high technology; and the field of view cannot be enlarged. , generally less than 30°

Method used

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  • Polarizing reflector plate, augmented reality near-to-eye display system and head-mounted display device
  • Polarizing reflector plate, augmented reality near-to-eye display system and head-mounted display device
  • Polarizing reflector plate, augmented reality near-to-eye display system and head-mounted display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: as Figure 1-4 The shown augmented reality near-eye display system is specifically a binocular augmented reality near-eye display system, which includes two display screens 1 capable of emitting polarized light, two polarizing reflectors 2 and a biconcave reflector 3a . The display screen 1 is used to construct a virtual image, the two polarizing reflectors 2 are used to process light transmission and reflection, and the double-concave mirror 3a is used for reflection. The polarizing reflective sheet 2 is mainly composed of a polarizing reflective film 20, an anti-reflection film 22, and a planar substrate 2a, wherein the planar substrate 2a is in the middle, the polarizing reflective film 20 is on the near-eye side, and the anti-reflection film 22 is on the back-eye side. This structure fully considers the extinction treatment of stray light, and at the same time, certain extinction threads can also be done on the mechanical structure to achieve a very p...

Embodiment 2

[0082] Embodiment 2: as image 3 , 5 As shown, the difference of this embodiment 1 is that the polarized reflective sheet 2 used in this embodiment is made in a different way. The back-eye surface is transmitted, and it is required to be reflected on the near-eye surface. At this time, it is required to cooperate with the wave plate 21 and other phase retarders. The reason is that the ordinary polarized reflective film produced by this method has only one polarization state, that is, the ordinary polarized reflective film on the market only selects to pass through the light with the same polarization direction as itself, and reflects the light perpendicular to its own polarization direction, and there is no polarized light from Different characteristics of front or back incident transmittance and reflectance. When using this kind of ordinary polarized reflective film, it is necessary to change the polarization direction of the light by adding a wave plate or other phase reta...

Embodiment 3

[0085] like image 3 As shown, the augmented reality near-eye display system includes a display screen that emits polarized light, a polarizing reflector 2, and two concave reflectors 3. The composition of this polarizing reflector 2 is exactly the same as that of Embodiment 1.

[0086]The position of the display screen 1 that emits polarized light is above the peripheral direction near the eyes. The display screen 1 can be a long strip display screen covering two eyes. Two concave reflectors 3 are respectively located below the display screen 1. The concave reflector 3 can also be connected as a strip, but the effect is not as good as that of separate ones. The polarizing reflective sheet 2 is arranged obliquely, that is, the far end of the polarizing reflective sheet 2 is close to the outer end of the concave reflector 3 , and the near end of the polarizing reflective sheet 2 is close to the inner end of the display screen 1 .

[0087] The axial far side of the above-menti...

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Abstract

The invention specifically relates to a polarizing reflector plate applied to an augmented reality visual system, can perform selective transmission and reflection on light emitted by a display screen, and can achieve efficient transmittance of natural light; the invention also relates to an augmented reality near-to-eye display system applying the polarizing reflector plate, and has the advantages of low cost, large visual field, high image quality and high transmittance; and also provided is a head-mounted display device applied to the augmented reality near-to-eye display system. According to the polarizing reflector plate applied to the augmented reality visual system, the front side and reverse side of the polarizing reflector plate only transmit light whose polarization direction is the same as that of the polarizing reflector plate itself, and reflect light whose polarization direction is vertical to that of the polarizing reflector plate itself; or the polarizing reflector plate has one side used for reflection and the other side used for transmission, one side of the polarizing reflector plate reflects light whose polarization direction is vertical to that of the polarizing reflector plate itself, and the other side transmits light in any direction; and one side of the polarizing reflector plate is applied to a near-to-eye side of the augmented reality visual system, and the other side is applied to a back-to-eye side of the augmented reality visual system.

Description

technical field [0001] The invention belongs to the field of near-eye display systems, more specifically the field of combining virtual and reality applications, and relates to a polarized reflective sheet applied to a virtual-real combined display system, a near-eye display system, and a head-mounted display prepared by using a virtual-real combined near-eye display system equipment. Background technique [0002] In near-eye display devices, the near-eye display optical system is the core component. The near-eye display device can clearly project images on the human retina through a special optical device, and present a virtual large-format image in front of the user's eyes, thereby being applied to virtual reality or augmented reality. Augmented reality is to see the real scene while seeing the virtual image. There are already some AR glasses products on the market today, such as Microsoft's products, Israel's Lumus, etc., but their manufacturing costs are extremely high...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02B27/01
CPCG02B5/3025G02B27/0172G02B2027/0178
Inventor 张国军许兵鲁杨孙静
Owner JINHUA VRSEEN TECH