• Patent Title: Techniques for dynamic voltage control for laser diodes in head-wearable display devices
  • Application No.: US17238781
    Application Date: 2021-04-23
  • Publication No.: US11682880B2
    Publication Date: 2023-06-20
  • Inventor: Kai XuKevin Orr
  • Applicant: GOOGLE LLC
  • Applicant Address: US CA Mountain View
  • Assignee: GOOGLE LLC
  • Current Assignee: GOOGLE LLC
  • Current Assignee Address: US CA Mountain View
  • Main IPC: H01S5/042
  • IPC: H01S5/042 G02B27/01
Techniques for dynamic voltage control for laser diodes in head-wearable display devices
Abstract:
The present disclosure relates generally to a device, such as a wearable display device configured with a laser diode driver implementing dynamic voltage control for laser diodes. The laser diodes may include one or more of a red laser diode, a blue laser diode, and a green laser diode. The device may determine a load condition based on a frame to be displayed at the device, and determine a target voltage level for a laser diode operably coupled to the laser diode driver of the device based on the load condition (e.g., an image signal processor (ISP) frame buffer load). The device may generate the target voltage level for the laser diode based on a base voltage level. For example, the device may be configured with a voltage booster operably coupled to the laser diode driver to provide the target voltage level in addition to the base voltage level.
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