公开(公告)号：US20240264413A1

公开(公告)日：2024-08-08

申请号：US18107338

申请日：2023-02-08

Applicant: Meta Platforms Technologies, LLC

Inventor： Dongmin YANG ,  Romeo Iguico Mercado ,  Yi Zhou ,  Yizhi Xiong

IPC: G02B13/00 ,  G02B5/20 ,  G02B7/08 ,  G02B7/36 ,  G02B9/60 ,  G02B13/06 ,  G02B26/08 ,  H04N23/55

CPC classification number: G02B13/0075 ,  G02B5/208 ,  G02B7/08 ,  G02B7/36 ,  G02B9/60 ,  G02B13/06 ,  G02B26/0875 ,  H04N23/55 ,  G02B27/0172 ,  G02B2027/0178

Abstract: An optical lens assembly with an electrically controlled, tunable optical lens with an attached aperture stop provides autofocus or similar functionalities in a camera with a wide field of view (FOV) (that is larger than 100 degrees in diagonal direction). The tunable optical lens is positioned between a first optical lens and a second optical lens in the optical lens assembly with the assembly including any number of negative or positive optical power lenses and/or other optical elements such as polarizers, quarter wave plates, optical filters, and similar ones. An optical profile of the tunable optical lens is modified through a voltage-controlled thin film piezo actuator based on a determined focus distance.

公开(公告)号：US20240264430A1

公开(公告)日：2024-08-08

申请号：US18359544

申请日：2023-07-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Jianer BAO ,  Yi ZHOU ,  Yizhi XIONG ,  Dongmin YANG ,  Tuoqi LI ,  Alexander HSING

IPC: G02B26/08 ,  G02B13/12 ,  G02B13/18 ,  G02B27/01

CPC classification number: G02B26/0875 ,  G02B13/12 ,  G02B13/18 ,  G02B27/0172 ,  G02B2027/0138 ,  G02B2027/0178

Abstract: A tunable lens includes a soft transparent polymer layer whose shape (optical profile) is dynamically modified by actuation of one or more piezoelectric actuators or shaping/reshaping of a transparent piezoelectric layer with a plurality of actuation zones on it. Through control of the actuation voltage a particular shape corresponding to a desired focal distance is obtained. Thus, spherical or aspherical reshaping of the tunable lens may be accomplished through the transparent piezoelectric layer.

公开(公告)号：US20240027722A1

公开(公告)日：2024-01-25

申请号：US18093715

申请日：2023-01-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Dongmin YANG ,  Fei Liu

IPC: G02B7/02 ,  G02B27/01

CPC classification number: G02B7/023 ,  G02B27/0172 ,  G02B2027/0178

Abstract: A flat-surfaced, electrically controlled, tunable lens to provide autofocus, optical zoom, optical image stabilization, and similar functionalities is described. A thickness profile of the tunable lens may be modified through a voltage-controlled thin film piezo actuator, for example, a lead-zirconium-titanium oxide (PZT) film. For autofocus and optical zoom features, an entire thickness of the tunable lens may be modified with the thickness being the same across a cross-section area of the tunable lens and opposing surfaces of the tunable lens remaining flat. For optical image stabilization, the thickness profile of the tunable lens may be modified to a tilted profile, where one side of the tunable lens is thinner than the other side with the opposing surfaces of the tunable lens remaining flat. The tilted profile may have an angle between the two plates (surfaces) in a range up to 10 degrees.

公开(公告)号：US20230360567A1

公开(公告)日：2023-11-09

申请号：US17989145

申请日：2022-11-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Dongmin YANG

IPC: G09G3/00 ,  G02B27/01

CPC classification number: G09G3/002 ,  G02B27/0172 ,  G09G3/003 ,  G02B2027/0138 ,  G02B2027/0178

Abstract: A near-eye display device may include a camera to track location of an eye pupil center; a projection light source to provide a collimated beam; and a micromirror array with adjustable micromirror pixels, for each eye of a user wearing the near-eye display device. A processor may determine a first coordinate set for a point on a 3D virtual object and a second coordinate set for a center of the pupil; select a micromirror pixel based on the first and second coordinate sets; determine a tilt angle for the selected micromirror pixel based on the first and second coordinate sets and a location of the projection light source; set the selected micromirror pixel to determined tilt angle; set a direction of the projection light source to a center of the micromirror pixel; and cause the projection light source to transmit a collimated beam to the center of the micromirror pixel.