Method and device for regulating brightness of light source as well as laser projection equipment

Abstract

The invention discloses a method and device for regulating brightness of a light source as well as laser projection equipment, relating to the field of laser display, which aims to solve the problem of large influence of external environment light on projection display output in the prior art. The embodiment of the invention comprises the following steps: setting an environment light brightness standard value; collecting environment light brightness; determining a difference regulation factor of the environment light brightness, wherein the difference regulation factor is determined according to the difference absolute value of the environment light brightness and the environment light brightness standard value, and the difference regulation factor is proportional to the difference absolute value; collecting input image brightness; and multiplying the environment light brightness with the difference regulation factor to be converted into a first current, converting the input image brightness into a second current, and overlying the two currents to form a light source drive current to be output. The invention is applicable to various image output devices.

Description

technical field [0001] The invention relates to the field of laser display, in particular to a method and device for adjusting the brightness of a light source and laser projection equipment. Background technique [0002] Due to the good monochromaticity of the laser light source, laser display technology has a wide color gamut, high color saturation, and strong color reproduction ability. It is considered to be one of the next-generation mainstream display technologies. Projection displays using laser light as a light source have begun to appear in the market. [0003] In the process of realizing the above-mentioned laser projection display, the inventor found at least the following problems in the prior art: In the projection display mode, the light intensity of the laser projection light source is generally constant, but in different occasions, different environments, and different viewing purposes , the impact of external ambient light on the output image is relatively ...

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Problems solved by technology

[0003] In the process of realizing the above-mentioned laser projection display, the inventor found at least the following problems in the prior art: In the projection display mode, the light intensity of the laser projection light source is generally constant, but in different occasions, different environments, and different viewing purposes , the impact of external ambient light on the output image is relatively large, so the laser projection display effect will become relatively poor in the environment of strong external light

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