Dunkelzählratenabschwächung auf einem Lawinenphotodiodenbasierten Umgebungslichtsensor

Details

Veröffentlichungs-Nr.

EP4722669

Anmeldetag

30. September 2025

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

G01J1/42, G01J1/02

Abstract

An example apparatus, computer-implemented method, and electronic device comprising an ambient light sensor configured to mitigate the effects of dark count rate associated with avalanche photodiodes are provided. The example apparatus includes an exposed avalanche photodiode array, a dark avalanche photodiode array, and a controller. The exposed avalanche photodiode array is positioned to receive ambient light from an external environment. The dark avalanche photodiode array is obscured from the ambient light. The controller is configured to receive an exposed illumination count corresponding to the ambient light received at the exposed avalanche photodiode array. The controller is further configured to receive a dark illumination count corresponding to a dark count at the dark avalanche photodiode array. The controller determines an ambient light value based on a difference between the exposed illumination count and the dark illumination count.

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz