METHOD FOR DETECTING BRIGHTNESS LEVEL OF LIGHT FROM HIGH-INTENSITY LIGHT SOURCE

To provide a method, a device, and an optical communication system that detect the brightness level of light from a high-intensity light source and detect the brightness level of light having an intensity exceeding the saturation level of an image sensor.SOLUTION: A method includes the steps of receiving light from a first light emitting element 11 with an image sensor 13, detecting a first saturated region in which the amount of received light is greater than the saturation level of the image sensor 13 among light receiving regions that have received light from the first light emitting element 11, and determining the size of a first saturated region as a first detected value representing the brightness level of light from the first light emitting element 11.SELECTED DRAWING: Figure 1 【課題】イメージセンサの飽和レベルを超える強さを持つ光の輝度レベルを検出するための、高輝度光源からの光の輝度レベルを検出する方法、装置及び光通信システムを提供する。【解決手段】方法は、第１の発光素子１１からの光をイメージセンサ１３で受光するステップと、第１の発光素子１１からの光を受光した受光領域のうち、受光量がイメージセンサ１３の飽和レベルより大きい第１の飽和領域を検出するステップと、第１の発光素子１１からの光の輝度レベルを表す第１の検出値として、第１の飽和領域の大きさを決定するステップと、を含む。【選択図】図１