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US 2026/0266970 A1Published application
ENHANCING LASER SAFETY OF TIME OF FLIGHT (ToF) SENSOR IN EXTENDED REALITY (XR) DEVICES
AssigneeQUALCOMM Incorporated
InventorsSukumar SAMAL, Manoj ALLADA, Subbarami Reddy GOTTIGUNDALA, Thirukumaran DECHINAMOORTHY
Life of this patent
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Abstract
Aspects of the disclosure are directed to enhancing laser safety of time of flight (ToF) sensors. In accordance with one aspect, the disclosure includes a cover glass including a first surface and a second surface; a conductive coating on the first surface of the cover glass; a pulldown resistor connected electrically in series to the conductive coating; and an analog to digital converter (ADC) electrically connected to the conductive coating.
Claims20
A method comprising:
- measuring a monitor voltage related to a voltage divider at a cover glass coating terminal;
- comparing the monitor voltage to a voltage threshold setting;
- determining if the monitor voltage exceeds the voltage threshold setting;
- and
- declaring a conductive fault condition in a cover glass of a laser time of flight (ToF) sensor.
2 more elements
An apparatus comprising:
- a cover glass including a first surface and a second surface;
- a conductive anti-reflective coating on the first surface of the cover glass;
- a pulldown resistor connected electrically in series to the conductive anti-reflective coating;
- and
- an analog to digital converter (ADC) electrically connected to the conductive anti-reflective coating.
2 more elements
An apparatus comprising:
- means for measuring a monitor voltage related to a voltage divider at a cover glass coating terminal;
- means for comparing the monitor voltage to a voltage threshold setting;
- means for determining if the monitor voltage exceeds the voltage threshold setting;
- and
- means for declaring a conductive fault condition in a cover glass of a laser time of flight (ToF) sensor.
2 more elements
Dependencies are inferred from the claim text.