公开(公告)号：US10942086B2

公开(公告)日：2021-03-09

申请号：US16836579

申请日：2020-03-31

Applicant: Magic Leap, Inc.

Inventor： Ming Yang ,  Wendong Xing ,  Eric C. Browy ,  William Hudson Welch ,  Thomas Mercier

IPC: G01M11/02 ,  G02B27/01

Abstract: Techniques are described for inspecting optical devices, such as eyepieces, to determine whether they exhibit light leakage through an edge sealant that has been applied to the device. Embodiments provide an inspection apparatus that can be employed to detect the leakage of light through an edge sealant of an optical device, where the edge sealant is applied to prevent, or at least reduce, the leakage of light from the optical device. Light from a light source is projected into the optical device. The light can travel along one or more wave guides within the device, until reaching an edge of the device. Light that is able to leak through an edge sealant can be reflected, using mirror(s) in the apparatus, and detected by a camera. Image(s) captured by the camera can be analyzed to determine the performance of the optical device with respect to edge leakage.

公开(公告)号：US20190383697A1

公开(公告)日：2019-12-19

申请号：US16438683

申请日：2019-06-12

Applicant: Magic Leap, Inc.

Inventor： Ming Yang ,  Wendong Xing ,  Eric C. Browy ,  William Hudson Welch ,  Thomas Mercier

IPC: G01M11/02

Abstract: Techniques are described for inspecting optical devices, such as eyepieces, to determine whether they exhibit light leakage through an edge sealant that has been applied to the device. Embodiments provide an inspection apparatus that can be employed to detect the leakage of light through an edge sealant of an optical device, where the edge sealant is applied to prevent, or at least reduce, the leakage of light from the optical device. Light from a light source is projected into the optical device. The light can travel along one or more wave guides within the device, until reaching an edge of the device. Light that is able to leak through an edge sealant can be reflected, using mirror(s) in the apparatus, and detected by a camera. Image(s) captured by the camera can be analyzed to determine the performance of the optical device with respect to edge leakage.

公开(公告)号：US20200225114A1

公开(公告)日：2020-07-16

申请号：US16836579

申请日：2020-03-31

Applicant: Magic Leap, Inc.

Inventor： Ming Yang ,  Wendong Xing ,  Eric C. Browy ,  William Hudson Welch ,  Thomas Mercier

IPC: G01M11/02

Abstract: Techniques are described for inspecting optical devices, such as eyepieces, to determine whether they exhibit light leakage through an edge sealant that has been applied to the device. Embodiments provide an inspection apparatus that can be employed to detect the leakage of light through an edge sealant of an optical device, where the edge sealant is applied to prevent, or at least reduce, the leakage of light from the optical device. Light from a light source is projected into the optical device. The light can travel along one or more wave guides within the device, until reaching an edge of the device. Light that is able to leak through an edge sealant can be reflected, using mirror(s) in the apparatus, and detected by a camera. Image(s) captured by the camera can be analyzed to determine the performance of the optical device with respect to edge leakage.