Device capable of emitting light rays with wide color temperature and high color rendering index

Abstract

The invention discloses a device capable of emitting light rays with wide color temperature and a high color rendering index. The device comprises an LED lamp plate formed into at least one array module, wherein the array module comprises a red lamp bead, a blue lamp bead, a green lamp bead, an amber lamp bead and a cold white lamp bead, the red lamp bead, the blue lamp bead, the green lamp bead and the cold white lamp bead are arranged in a rectangular pattern, and the amber lamp bead is positioned at the center position of the rectangle; an LED driving circuit; a main control circuit; an external control terminal machine; a communication module; and a diffusing plate. The device is novel in concept, reasonable in design and convenient to use, can achieve a wide color temperature adjustment range of 1000K-15000K, an average color rendering index of 90, and a wide wavelength coverage range, and can output composite light with the higher color rendering index on the basis of achieving the adjustable wide color temperature.

Description

technical field [0001] The invention relates to the technical field of light adjustment, in particular to a device capable of adjusting light with a wide color temperature and high color rendering index. Background technique [0002] When the light source device is used for detection, compared with the traditional light source, LED light source has the characteristics of high luminous efficiency, long life, low energy consumption and good stability, and has become the preferred light source for machine vision systems. Even so, LED lights also have their own defects. For example, an important shortcoming is the narrow-band nature of its luminous spectrum. By mixing LED lights of different colors, the luminous spectrum can be changed, thereby changing the overall color temperature, color and brightness of the light source to achieve different lighting. Features. [0003] Most of the existing light sources with variable color temperature adopt the mixed light of RGB three prim...

AI Technical Summary

Problems solved by technology

Among them, the former can realize the change of color temperature by adjusting the mixing ratio of the three primary colors, and has a wide range of dimming, but lacks the light in the amber band, has a low color rendering index, and is poor in restoring the true color of objects, which does not meet the lighting requirements for camera and sensor testing occasions. Requirements; the latter can obtain synthetic light with precise color temperature by mixing two kinds of color temperature LEDs, and the color temperature basically does not fluctuate when the output brightness is adjusted at the same time, but this dimming method has a narrow range of adjustable color temperature, and only two kinds of lights can be realized. Synthetic light on the line of color coordinates deviates from the blackbody locus, which cannot simulate the effect of sunlight well

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