公开(公告)号：US20230176461A1

公开(公告)日：2023-06-08

申请号：US17922235

申请日：2021-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lebao Yang ,  Zhicong Xie ,  Bo Tian ,  Jing Zhang ,  Fei Zhao ,  Jingfei Zhang ,  Zhenlin Xie

IPC: G03B21/16 ,  G03B21/00 ,  G02B27/10

CPC classification number: G03B21/16 ,  G03B21/006 ,  G02B27/10 ,  G03B21/2066

Abstract: The optical machine module includes a light emitting module and a modulation module. The light emitting module includes a light source configured to emit linearly polarized light. The modulation module includes a modulation component. The modulation component includes a light-combining prism and a liquid crystal on silicon (LCOS) modulator. The light-combining prism includes four rectangular prisms. The light-combining prism has four sides and four intersection planes formed by the four rectangular prisms. The LCOS modulator includes a first LCOS modulator, a second LCOS modulator, and a third LCOS modulator. The first LCOS modulator, the second LCOS modulator, and the third LCOS modulator are respectively disposed on light emitting sides of three different sides. At least two of the four intersection planes are configured to split light. At least two of the four intersection planes are configured to combine light.

公开(公告)号：US11598956B2

公开(公告)日：2023-03-07

申请号：US17350367

申请日：2021-06-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenlin Xie ,  Yong Cao ,  Patricia Leichliter

IPC: G02B27/00 ,  G02B26/08 ,  G06V40/19

Abstract: An eyeball tracking system is provided, which includes: an illumination light source, configured to transmit an illumination light ray to a beam scanner; the beam scanner, configured to project the illumination light ray onto an entrance pupil optical apparatus; the entrance pupil optical apparatus, configured to reflect, reproduce, or refract the illumination light ray, so that the reflected, reproduced, or refracted illumination light ray illuminates an eyeball; a photoelectric detector, configured to: collect a receive optical power value of an eyeball reflection light ray, and send the receive optical power value to a controller; and the controller, configured to: receive the receive optical power value sent by the photoelectric detector, determine, based on the receive optical power value, an optical power reference value, and determine a current gaze direction of the eyeball based on the optical power reference value.

公开(公告)号：US11977229B2

公开(公告)日：2024-05-07

申请号：US17166358

申请日：2021-02-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenlin Xie ,  Qi Wang

IPC: G02B27/01 ,  G02B27/00 ,  H04N9/31

CPC classification number: G02B27/0172 ,  G02B27/0093 ,  H04N9/3161 ,  H04N9/3164 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: A multi-focal plane display system and a device are provided. The multi-focal plane display system includes a laser projection optical engine and a holographic reflection light fusion device. The laser projection optical engine is configured to generate and modulate at least two laser beam groups, and transmit the at least two laser beam groups to the holographic reflective optical fusion device, where each laser beam group corresponds to one displayed image. The holographic reflective optical fusion device is configured to reflect the at least two laser beam groups, where exit pupil locations of the at least two laser beam groups are the same, and displayed images of at least two focal planes are obtained by performing imaging on the at least two laser beam groups by a human eye. A structure of the multi-focus plane display system provided in the embodiments is easy to implement.

公开(公告)号：US11067795B2

公开(公告)日：2021-07-20

申请号：US16790137

申请日：2020-02-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenlin Xie ,  Yong Cao ,  Patricia Leichliter

IPC: G02B27/00 ,  G02B26/08 ,  G06K9/00

Abstract: An eyeball tracking system is provided, which includes: an illumination light source, configured to transmit an illumination light ray to a beam scanner; the beam scanner, configured to project the illumination light ray onto an entrance pupil optical apparatus; the entrance pupil optical apparatus, configured to reflect, reproduce, or refract the illumination light ray, so that the reflected, reproduced, or refracted illumination light ray illuminates an eyeball; a photoelectric detector, configured to: collect a receive optical power value of an eyeball reflection light ray, and send the receive optical power value to a controller; and the controller, configured to: receive the receive optical power value sent by the photoelectric detector, determine, based on the receive optical power value, an optical power reference value, and determine a current gaze direction of the eyeball based on the optical power reference value.