公开(公告)号：US20180113508A1

公开(公告)日：2018-04-26

申请号：US15788725

申请日：2017-10-19

Applicant: Apple Inc.

Inventor： Kathrin Berkner-Cieslicki ,  Ricardo J. Motta ,  Se Hoon Lim ,  Minwoong Kim ,  Kenichi Saito ,  Branko Petljanski ,  Jason C. Sauers ,  Yoshikazu Shinohara

IPC: G06F3/01 ,  G06T19/00 ,  H04N5/33 ,  G06T7/292

CPC classification number: G06F3/013 ,  G02B27/0172 ,  G02B2027/0187 ,  G06T7/292 ,  G06T19/006 ,  H04N5/33

Abstract: An eye tracking system for detecting position and movements of a user's eyes in a head-mounted display (HMD). The eye tracking system may include at least one near-IR (NIR) eye tracking camera positioned at each side of the user's face and pointed towards eye-facing surfaces of eyepieces of the HMD, an illumination source that emits NIR light towards the user's eyes, and hot mirrors located between the eye-facing surfaces of the eyepieces and the user's eyes. The hot mirrors reflect at least a portion of NIR light, while allowing visible light to pass. The cameras capture images of the user's eyes reflected by the hot mirrors. Positioning the hot mirrors at or near the eye-facing surfaces of the eyepieces allows the cameras to be placed at the sides of the user's face without having to image through the eyepieces.

公开(公告)号：US11829528B2

公开(公告)日：2023-11-28

申请号：US17718083

申请日：2022-04-11

Applicant: Apple Inc.

Inventor： Kathrin Berkner-Cieslicki ,  Se Baek Oh ,  Scott M. DeLapp ,  Christopher F. Griffo ,  Bradley C. Steele ,  Ting Sun ,  Kenichi Saito ,  Noah D. Bedard

IPC: G06F3/01 ,  G02B27/00 ,  G02B27/01

CPC classification number: G06F3/013 ,  G02B27/0093 ,  G02B27/0172 ,  G02B2027/014 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0187

Abstract: An eye tracking system for detecting position and movements of a user's eyes in a head-mounted display (HMD). The eye tracking system includes at least one eye tracking camera, an illumination source that emits infrared light towards the user's eyes, and diffraction gratings located at the eyepieces. The diffraction gratings redirect or reflect at least a portion of infrared light reflected off the user's eyes, while allowing visible light to pass. The cameras capture images of the user's eyes from the infrared light that is redirected or reflected by the diffraction gratings.

公开(公告)号：US11606539B1

公开(公告)日：2023-03-14

申请号：US16221302

申请日：2018-12-14

Applicant: Apple Inc.

Inventor： Kenichi Saito ,  Yoshikazu Shinohara ,  Pierre-Jean Parodi-Keravec

IPC: G02B3/10 ,  G02B3/14 ,  G02B17/00 ,  G02B3/00 ,  G02B21/36 ,  H04N9/31 ,  G03B21/14 ,  G02B21/00

Abstract: An imaging system including a front aperture, two or more refractive lens elements mounted in a lens barrel, and a photosensor. One or more of the components of the imaging system (e.g., the aperture, lenses, lens groups, and/or photosensor) are tilted with respect to each other and/or with respect to a center (or mechanical) axis of the imaging system to compensate for effects including but not limited to keystone distortion, resolution non-uniformity, and gradient blur that result from tilt of an object in the field of view of the camera with respect to the center axis of the camera.

公开(公告)号：US20220236799A1

公开(公告)日：2022-07-28

申请号：US17718083

申请日：2022-04-11

Applicant: Apple Inc.

Inventor： Kathrin Berkner-Cieslicki ,  Se Baek Oh ,  Scott M. DeLapp ,  Christopher F. Griffo ,  Bradley C. Steele ,  Ting Sun ,  Kenichi Saito ,  Noah D. Bedard

IPC: G06F3/01 ,  G02B27/01 ,  G02B27/00

Abstract: An eye tracking system for detecting position and movements of a user's eyes in a head-mounted display (HMD). The eye tracking system includes at least one eye tracking camera, an illumination source that emits infrared light towards the user's eyes, and diffraction gratings located at the eyepieces. The diffraction gratings redirect or reflect at least a portion of infrared light reflected off the user's eyes, while allowing visible light to pass. The cameras capture images of the user's eyes from the infrared light that is redirected or reflected by the diffraction gratings.