公开(公告)号：EP4102220A1

公开(公告)日：2022-12-14

申请号：EP22177825.1

申请日：2022-06-08

Applicant: Apple Inc.

Inventor： MCCORD, Michael K. ,  KHAJEH, Ehsan ,  KING, Brian M. ,  CHEN, Tong ,  SHANJANI, Yaser

IPC: G01N29/04 ,  G01N29/44

Abstract: Acoustic optical integrity detection system architectures and methods can be used to detect optical integrity of an optical component by detecting a discontinuity on and/or in the optical component (e.g., on the optical surface and/or within the bulk of the optical component). In some examples, integrity detection can be used to ensure safety compliance of an optical system, optionally including a laser. Acoustic integrity detection can utilize transducers (e.g., piezoelectric transducers) to transmit ultrasonic waves along an optical surface and/or through the thickness of an optical component. A discontinuity of the optical surface can interact with the transmitted wave causing attenuation, redirection and/or reflection of at least a portion of the transmitted wave. Portions of the transmitted wave energy after interaction with the discontinuity can be measured to determine discontinuity location, type, and/or severity.