18730091. LIGHTGUIDE INTEGRITY MONITORING IN A HEAD MOUNTED DISPLAY (GOOGLE LLC)
LIGHTGUIDE INTEGRITY MONITORING IN A HEAD MOUNTED DISPLAY
Organization Name
Inventor(s)
Kaveh Moussakhani of Toronto CA
LIGHTGUIDE INTEGRITY MONITORING IN A HEAD MOUNTED DISPLAY
This abstract first appeared for US patent application 18730091 titled 'LIGHTGUIDE INTEGRITY MONITORING IN A HEAD MOUNTED DISPLAY
Original Abstract Submitted
Lightguide integrity monitoring in a head mounted display is facilitated by monitoring an elongated conductor disposed proximal a lightguide in an optical combiner. When a sufficient change in one or more electrical characteristics of the elongated conductor is detected, a signal indicating that the lightguide has been damaged may be generated, which may alert the user to the damage or disable one or more light sources in the HMD to prevent eye discomfort. The monitored electrical characteristics of the elongated conductor may include connectivity, impedance, and gain, among others. A sufficient change in the one or more electrical characteristics may be detected based on a percentage change in an electrical characteristic, a change in more than one electrical characteristic, or a change in a ratio of two electrical characteristics, among others.