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Head-mounted device of eyeball tracking device having multi-layer free-form optical waveguide

A head-mounted device and eye-tracking technology, applied in optics, optical components, instruments, etc., can solve problems such as being unfavorable to the simplified design and appearance expansion of the head-mounted device, affecting the effect of eye tracking, and low device integration. , to achieve the effect of solving low device integration, improving user experience, and meeting setting requirements

Inactive Publication Date: 2018-10-12
深圳纬目信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The eyeball image is captured by the camera facing the eyeball, so that the collected image is oblique imaging, which will affect the effect of eyeball tracking;
[0006] 2) In order to correct the error, repeated calibration is required many times, resulting in poor user experience;
[0007] 3) The eyeball imaging sensor is separated from the lens and has a non-integrated structure. As a result, if the final product wants to add eye tracking function, it must be pre-installed for each product
The low level of equipment integration is not conducive to the simple design and appearance expansion of the headset

Method used

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  • Head-mounted device of eyeball tracking device having multi-layer free-form optical waveguide
  • Head-mounted device of eyeball tracking device having multi-layer free-form optical waveguide
  • Head-mounted device of eyeball tracking device having multi-layer free-form optical waveguide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] The contact surfaces of the first-layer optical waveguide 102 and the third-layer optical waveguide 106 with the air space are all arc surfaces, and the interface between the first-layer optical waveguide 102 and the second-layer optical waveguide 104 is a combination of multiple folded surfaces and arc surfaces. The infrared light source 20 is located on the mirror frame on one side of the multilayer free-form surface optical waveguide, and the CMOS element of the eyeball imaging sensor 30 is closely attached to the side of the other side of the multi-layer free-form surface optical waveguide.

[0075] Placing the infrared light source 20 and the CMOS element on different sides of the multilayer free-form surface light wave, changing the shape of the interface between the first layer of optical waveguide 102 and the second layer of optical waveguide 104, can make more light reflected by the eyeball 50 go to the CMOS element. side transmission.

[0076] Infrared light r...

Embodiment 2

[0078] Figure 4 and Figure 5 A schematic structural diagram of an eye tracking device according to an embodiment of the present invention is shown.

[0079] The outer surface of the first-layer optical waveguide 102 and the outer surface of the third-layer optical waveguide 106 are all configured as arc surfaces, and the interface between the first-layer optical waveguide 102 and the second-layer optical waveguide 104 is configured as a trapezoidal concave surface and an inverted trapezoidal shape. The convex surface is staggered along the width structure direction of the lens 10 to form the second combination structure surface; there are two eyeball imaging sensors 30, which are respectively arranged on both sides of the lens 10, and the eyeball imaging sensor 30 is attached to the side of the corresponding lens 10 ; The infrared light source 20 includes a plurality of infrared light sources 20 distributed on the peripheral contour of the lens 10 . The infrared light sour...

Embodiment 3

[0081] Image 6 and Figure 7 A schematic structural diagram of an eye tracking device according to an embodiment of the present invention is shown.

[0082] In any of the above embodiments, preferably, the outer surface of the first-layer optical waveguide 102 and the outer surface of the third-layer optical waveguide 106 are formed by splicing a plurality of bending planes, the second-layer optical waveguide 104-the third-layer optical waveguide The interface of the waveguide 106 is a combined multi-fold surface. The infrared light source 20 is located on the mirror frame on one side of the multilayer free-form surface optical waveguide, and the CMOS element of the eyeball imaging sensor 30 is closely attached to the side of the other side of the multilayer free-form surface optical waveguide.

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Abstract

The invention provides a head-mounted device of an eyeball tracking device having multi-layer free-form optical waveguide. The head-mounted display device comprises a main body casing, an eyeball tracking device having a multi-layer free-form optical waveguide, a main board and a power source. The eyeball tracking device having the multi-layer free-form optical waveguide includes a lens, an infrared light source and an eyeball imaging sensor. The main board includes an eyeball tracking calculation module and a device control module. Through the technical solution of the invention, the problemof low integration of the device with the eyeball tracking device is solved, a new scheme is provided for the simplified design and the appearance expansion, the eyeball tracking and positioning speedof the device is fast, and the tracking effect is good.

Description

technical field [0001] The invention relates to the technical field of eye tracking, in particular to a head-mounted device including an eye tracking device with a multi-layer free-form surface optical waveguide. Background technique [0002] At present, the head-mounted display devices on the market, such as VR or AR, MR, in order to achieve high resolution, need a computer processing system with relatively high processing power, in order to reduce the dizziness when using the head-mounted display and improve the user's interactive experience , requiring the device to automatically adjust and adapt to the user's pupillary distance. Eye tracking technology just provides a practical solution to the above problems: judge the center of the user's eye focus based on eye tracking technology, perform gaze point rendering, and optimize the allocation of computer processing power; accurately calculate the user's interpupillary distance, and then combine the micro control unit Adapt...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B27/00
CPCG02B27/0093G02B27/0172
Inventor 栗明范聪
Owner 深圳纬目信息技术有限公司
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