公开(公告)号：US20230341694A1

公开(公告)日：2023-10-26

申请号：US18342451

申请日：2023-06-27

Applicant: Magic Leap, Inc.

Inventor： Chunyu Gao ,  Chulwoo Oh ,  Michael Anthony Klug ,  Evyatar Bluzer

IPC: G02B27/01 ,  G06T19/00 ,  H04N13/344 ,  G02B27/00 ,  H04N13/383 ,  H04N13/332 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G06T19/006 ,  H04N13/344 ,  G02B27/0093 ,  H04N13/383 ,  G02B27/0179 ,  H04N13/332 ,  H04N2213/001 ,  G02B2027/0127 ,  G02B2027/0134 ,  G02B2027/0123 ,  G02B6/0076 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02B2027/0185 ,  G02B2027/0138

Abstract: Examples of eye-imaging apparatus using diffractive optical elements are provided. For example, an optical device comprises a substrate having a proximal surface and a distal surface, a first coupling optical element disposed on one of the proximal and distal surfaces of the substrate, and a second coupling optical element disposed on one of the proximal and distal surfaces of the substrate and offset from the first coupling optical element. The first coupling optical element can be configured to deflect light at an angle to totally internally reflect (TIR) the light between the proximal and distal surfaces and toward the second coupling optical element, and the second coupling optical element can be configured to deflect at an angle out of the substrate. The eye-imaging apparatus can be used in a head-mounted display such as an augmented or virtual reality display.

公开(公告)号：US11237631B2

公开(公告)日：2022-02-01

申请号：US17168006

申请日：2021-02-04

Applicant: Magic Leap, Inc.

Inventor： Asif Sinay ,  Barak Freedman ,  Evyatar Bluzer

IPC: G06T7/20 ,  G02B27/48 ,  H04N5/232 ,  G06F3/01 ,  G02B27/00 ,  G06T7/262 ,  G06T7/32 ,  G01N21/47 ,  G02B27/01

Abstract: A method of tracking an eye gaze include obtaining a pre-calibrated speckle map of the eye of the user, determining a starting position of the eye using the pre-calibrated speckle map, and tracking movement of the eye relative to the starting position by: directing a light beam at the eye, detecting a plurality of speckle patterns formed at a detector by a portion of the light beam reflected by the eye, and tracking movement of the eye relative to the starting position by tracking the plurality of speckle patterns from frame to frame.

公开(公告)号：US11073695B2

公开(公告)日：2021-07-27

申请号：US15925505

申请日：2018-03-19

Applicant: Magic Leap, Inc.

Inventor： Chunyu Gao ,  Chulwoo Oh ,  Michael Anthony Klug ,  Evyatar Bluzer

IPC: G02B27/01 ,  G02B27/00 ,  H04N13/383 ,  H04N13/332 ,  H04N13/344 ,  G06T19/00 ,  F21V8/00

Abstract: Examples of eye-imaging apparatus using diffractive optical elements are provided. For example, an optical device comprises a substrate having a proximal surface and a distal surface, a first coupling optical element disposed on one of the proximal and distal surfaces of the substrate, and a second coupling optical element disposed on one of the proximal and distal surfaces of the substrate and offset from the first coupling optical element. The first coupling optical element can be configured to deflect light at an angle to totally internally reflect (TIR) the light between the proximal and distal surfaces and toward the second coupling optical element, and the second coupling optical element can be configured to deflect at an angle out of the substrate. The eye-imaging apparatus can be used in a head-mounted display such as an augmented or virtual reality display.