Title:
HOLOGRAPHIC SMART DISPLAY APPARATUS INTEGRATED WITH PUPIL TRACKING FUNCTION, AND IMPLEMENTATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/147825
Kind Code:
A1
Abstract:
A holographic smart display apparatus integrated with a pupil tracking function, and an implementation method therefor. A first holographic grating group (111, 112) and a second holographic grating group (121, 122) that are sensitive to light of two different wave bands are attached to a waveguide substrate (100) of a holographic waveguide. By using two holographic grating groups (111, 112, 121, 122) sensitive to light of different wave bands to transmit image information of a specific wavelength, the crosstalk between different light is reduced, and the pupil recognition efficiency can be effectively improved. In addition, due to the use of the two holographic grating groups (111, 112, 121, 122) sensitive to the light of different wave bands, an image source (400) and a pupil imaging unit (500) can be arranged at the same side, and the image source (400) and the pupil imaging unit (500) thus share part of a light path system, such that the whole system structure is effectively simplified, thereby solving the technical problem of existing wearable smart glasses not being able to be integrated with a pupil tracking module, or being able to be integrated with the module, but the module being too large, too heavy and too complex.
Inventors:
ZHANG MENGHUA (CN)
GE PINGLAN (CN)
FENG ZHENJUN (CN)
XU ZHONGFA (CN)
GE PINGLAN (CN)
FENG ZHENJUN (CN)
XU ZHONGFA (CN)
Application Number:
PCT/CN2021/072533
Publication Date:
July 29, 2021
Filing Date:
January 18, 2021
Export Citation:
Assignee:
ARTIZAN PHOTONIC CRYSTAL SHANDONG (CN)
International Classes:
G02B27/01
Foreign References:
| CN111123525A | 2020-05-08 | |||
| CN109116566A | 2019-01-01 | |||
| US20170277259A1 | 2017-09-28 | |||
| CN104116495A | 2014-10-29 | |||
| CN104116495A | 2014-10-29 | |||
| CN104950442A | 2015-09-30 | |||
| CN105954992A | 2016-09-21 | |||
| US20190258062A1 | 2019-08-22 |
Attorney, Agent or Firm:
BEIJING ZHILIN HENGYUAN IP FIRM (CN)
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