Electronic devices and optical detection methods

By using both ambient light sensors and infrared light sensors to detect ambient light in electronic devices, the problem of inaccurate visible light illuminance detection is solved, enabling more accurate illuminance calculation and display brightness adjustment, thus improving user experience and shooting results.

CN122306216APending Publication Date: 2026-06-30HONOR DEVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HONOR DEVICE CO LTD
Filing Date
2024-12-31
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

When electronic devices detect ambient light parameters, especially visible light illuminance, they are easily affected by infrared light, leading to inaccurate detection and affecting the brightness matching of the display screen and the shooting effect.

Method used

The system uses both an ambient light sensor and an infrared light sensor to detect ambient light, ensuring that they are oriented in the same direction and within a distance of less than a threshold. The processor collects electrical signals from visible light and infrared light to calculate a more accurate visible light illuminance, and adjusts the display brightness and camera exposure time based on the illuminance and flicker frequency.

Benefits of technology

It improves the matching of display brightness and user viewing experience, reduces user operations, enhances shooting effects, avoids the "water ripple" phenomenon, and saves design space and costs.

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Abstract

This application provides an electronic device and a light detection method. The electronic device may include an ambient light sensor and an infrared light sensor. Specifically, the electronic device can determine the voltage value corresponding to the ambient light illuminance using the ambient light sensor, and determine the voltage value corresponding to the infrared light component in the ambient light using the infrared light sensor. Then, the electronic device can cancel out the voltage value corresponding to the infrared light component in the ambient light from the voltage value corresponding to the ambient light illuminance to obtain the voltage value corresponding to the visible light illuminance in the ambient light. Furthermore, the electronic device can determine the visible light illuminance in the ambient light based on the aforementioned voltage value corresponding to the visible light illuminance. Finally, the electronic device can adjust the display screen brightness based on the visible light illuminance, thereby improving user comfort when viewing the display screen.
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