LED light source device and imaging system

Abstract

The invention discloses an LED light source device and an imaging system, and relates to the technical field of LED light sources. The problems that in the prior art, the adjustable range of the spectrum is small, and the continuity of the spectrum is poor are solved. The LED light source device comprises LED light sources emitting light in at least three colors. The chromaticity coordinate points of the spectrums of the LED light sources emitting the light in the different colors in a chromaticity diagram are different. The chromaticity coordinate points of the spectrums of the LED light sources emitting the light in at least one color in the chromaticity diagram are located in a white-light coordinate region, and the chromaticity coordinate points of the spectrums of the LED light sources emitting the light in at least one color in the chromaticity diagram are located outside the white-light coordinate region. The LED light source device and the imaging system are mainly used for various imaging devices such as digital cameras and mobile phones with the camera shooting function.

Description

technical field [0001] The invention relates to the technical field of LED light source, in particular to an LED light source device and an image system. Background technique [0002] Electronic devices with imaging functions have become popular in daily life and work, such as digital cameras, smart phones, digital video cameras and other imaging devices. During the working process of imaging equipment, the role of light is very important. The intensity of light and the quality of light color will affect the imaging quality of imaging equipment; especially for some creative imaging work, in order to obtain high-quality imaging, specific lighting to match. [0003] The lighting equipment mainly used in the imaging equipment of the prior art mainly includes the following three types: [0004] First, the gas discharge tube is used as the light source, which can achieve a high flash index (that is, the intensity of the light source), and has better illuminance output and insta...

AI Technical Summary

Problems solved by technology

However, the luminous characteristics of the lighting device with gas discharge tube as the light source are not easy to control, the control and drive are more complicated, and the light color is relatively single, so it cannot provide light sources with different light colors for different objects.

In addition, the energy consumption of the gas discharge tube is relatively high, which does not meet the current requirements for energy saving and emission reduction.

[0005] Second, the LED with a single light color is used as the light source, and the spectrum of the LED light source is also very single. In order to make the light source relatively versatile, ordinary white LEDs are generally used as the light source. The color rendering of white LEDs is not high, and the light color It is very difficult to adjust, and it cannot provide light sources of different light colors for different objects

However, due to the defects of narrow spectrum and high saturation of red, green, and blue LEDs, the continuity of the mixed light spectrum composed of three-color LEDs is poor, and the color rendering is not good.

In the range of visible light with a wavelength of 380nm-780nm, the mixed light spectrum composed of three-color LEDs can be found in figure 1 ,pass figure 1 It can be seen that the spectrum of the mixed light formed by the three-color LED is only high in the amplitude of some wavelengths, and the amplitude of other wavelengths is lower, and the amplitude of many wavelengths is lower than 10%, which cannot meet the imaging requirements of the imaging system. Requirements, that is to say, the mixed light composed of three-color LEDs only has good performance in some bands of light sources, and the spectral continuity is poor, which cannot meet the requirements of video equipment for various lighting environments and control flexibility.

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