公开(公告)号：US20240319672A1

公开(公告)日：2024-09-26

申请号：US18126274

申请日：2023-03-24

Applicant: Apple Inc.

Inventor： Richard A. Davis ,  David D. Dashevsky

IPC: G04B3/04 ,  G04G21/02 ,  G04G21/08

CPC classification number: G04B3/046 ,  G04G21/025 ,  G04G21/08

Abstract: An electronic watch may include a housing defining a side wall, a display, a front cover positioned over the display, and an input system configured to receive a rotational input and a translational input. The input system may include a crown including a knob external to the housing and a rotor coupled to the knob and configured to rotate in response to the rotational input and translate in response to the translational input. The input system may further include a first laser module configured to direct a first laser beam onto the rotor and receive first reflected light from the rotor, a second laser module configured to direct a second laser beam onto the rotor and receive second reflected light from the rotor. The electronic watch may further include a processing system coupled to the first and second laser modules and configured to determine a parameter of the rotational input.

公开(公告)号：US20230258479A1

公开(公告)日：2023-08-17

申请号：US18141672

申请日：2023-05-01

Applicant: Apple Inc.

Inventor： Xin Li ,  Damon R. Lemmon ,  David D. Dashevsky ,  Dianbo Guo ,  Peng Zhao ,  Ruonan Yang

IPC: G01D5/347 ,  G06F3/03 ,  G06F3/0362

CPC classification number: G01D5/34715 ,  G06F3/0312 ,  G06F3/0362 ,  G01D5/3473

Abstract: An electronic device is described. The electronic device may include a housing, a rotatable crown, and a self-mixing interferometry (SMI) sensor positioned within the housing. The rotatable crown may include an array of retroreflective surface features that reflect incident light back to a light source. Each retroreflective surface feature of the array of retroreflective surface features may be formed as a corner-cube with three perpendicular faces. The SMI sensor or associated processing electronics may compare originally emitted light with reflected light to identify a movement or distance of the rotatable crown with respect to the SMI sensor.