18150982. WEARABLE HEADS-UP DISPLAY WITH OPTICAL PATH FAULT DETECTION simplified abstract (Google LLC)

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WEARABLE HEADS-UP DISPLAY WITH OPTICAL PATH FAULT DETECTION

Organization Name

Google LLC

Inventor(s)

Stuart James Myron Nicholson of Waterloo (CA)

Timothy Paul Bodiya of Toronto (CA)

WEARABLE HEADS-UP DISPLAY WITH OPTICAL PATH FAULT DETECTION - A simplified explanation of the abstract

This abstract first appeared for US patent application 18150982 titled 'WEARABLE HEADS-UP DISPLAY WITH OPTICAL PATH FAULT DETECTION

Simplified Explanation

The abstract describes a wearable heads-up display that includes a power source, laser sources, and a lightguide. It also mentions a photodetector positioned to detect the intensity of a test light emitted from the lightguide and a laser safety circuit that controls the power supply to the laser sources based on the output signal from the photodetector.

  • The wearable heads-up display includes a power source, laser sources, and a lightguide.
  • A photodetector is used to detect the intensity of a test light emitted from the lightguide.
  • A laser safety circuit is implemented to control the power supply to the laser sources.
  • The laser safety circuit reduces or shuts off the power supply if the detected intensity is below a threshold.

Potential Applications

  • Augmented reality devices
  • Virtual reality headsets
  • Heads-up displays in vehicles
  • Medical imaging devices

Problems Solved

  • Ensures laser safety by monitoring the intensity of emitted light
  • Prevents potential harm to the user's eyes from laser sources

Benefits

  • Enhanced safety for users by controlling laser power supply
  • Enables reliable and accurate detection of low light intensity
  • Can be applied to various wearable display devices


Original Abstract Submitted

A wearable heads-up display includes a power source, laser sources, and a lightguide. A photodetector is positioned to detect an intensity of a test light emitted at a perimeter of the lightguide from an optical path within the lightguide. A laser safety circuit provides a control to reduce or shut off a supply of electrical power from the power source to the laser sources in response to an output signal from the photodetector indicating that the detected intensity is below a threshold.

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