LED light source control method

Abstract

The invention provides an appropriate method to control an LED light source. The LED light source control method comprises the steps that (a) light emission of an LED assembly is controlled according to a preset value; (b) an optical sensor is used to detect light emitted by the LED assembly; and (c) if the detection result is inconsistent with the preset value, light emission of the LED assembly is adjusted by a controller, so that light emitted by the LED assembly equals the preset value.

Description

technical field [0001] The invention relates to a method for controlling the light emission of an LED light source to provide suitable light. In particular, the present invention relates to a method of controlling LED light sources to provide light with a suitable spectrum, light intensity and / or color temperature for electronic equipment. Background technique [0002] Common light-emitting elements (or illuminants) that provide light sources for camera and / or photographic equipment, such as mobile phone cameras and other portable electronic devices, mainly include LED light-emitting elements, fluorescent lamps or standard light sources. [0003] The above-mentioned various types of light-emitting elements have many defects when providing background light sources for portable electronic devices: First, the above-mentioned LED light sources, fluorescent lamps or standard light sources can only provide light with specific spectrum and color temperature values, which cannot sat...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned various types of light-emitting elements have many defects when providing background light sources for portable electronic devices: First, the above-mentioned LED light sources, fluorescent lamps or standard light sources can only provide light with specific spectrum and color temperature values, which cannot satisfy users in different environments. The use needs of the environment

For traditional light sources, since this difference cannot be eliminated and irreparable through post-correction

This variance can lead to variations in image quality even within the same batch of portable electronic devices

Also, since this difference cannot be eliminated and is difficult to predict, it makes it difficult for manufacturers to further improve the light source based on statistical data

Further, light-emitting elements such as LED lamps, fluorescent lamps or standard light sources all have a certain service life, and after a period of use, they will age and cannot provide stable and high-intensity light.

Finally, since the single-wavelength LED light source, fluorescent lamp or standard light source can only provide light with a single spectrum and color temperature value, the light source of the camera equipment cannot automatically switch between multiple color temperatures according to the preset value.

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