Control method for adaptively adjusting light source brightness, chromaticity, and color temperature

Abstract

The invention relates to a control method for adaptively adjusting the brightness, chromaticity and color temperature of a light source. Including: ⑴system initialization; ⑵set the initial current gain of red, green, and white lights respectively, and the spectrometer collects the spectral curve of each lamp bead to obtain chromaticity, brightness, and color temperature; ⑶according to the collected spectral curve of white light, select the corresponding filter (4) Collect the chromaticity, brightness, and color temperature values ​​of the red light, green light, and white light passed through the filter; (5) Set the brightness, chromaticity, and color temperature values ​​of the mixed lights, and improve the color rendering index of the LED light Approximate the natural spectrum algorithm to obtain the theoretical adjustment value of red, green and white lights; ⑹set the current gain; ⑺collect the chromaticity, brightness, and color temperature of the red light, green light and white light filtered by the current gain; ⑻judgment abs( (Y r '‑Y r t ) / Y r t )≤Δe&&abs((Y g '‑Y g t ) / Y g t )≤Δe&&abs((Y w '‑Y w t ) / Y w t )≤Δe; ⑼If the judgment is no, return to step ⑹; ⑽If the judgment is yes, the current current gain meets the requirements i r +Δi r i g +Δi g i w +Δi w .

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a control method for adaptively adjusting the brightness, chromaticity and color temperature of a light source. Background technique [0002] In recent years, with the continuous development of LED technology, it is possible to use LED as a lighting source. However, the light source has strict requirements on the color rendering index in lighting fixtures. Unfortunately, the LED lighting market is still in a relatively chaotic state, and the color rendering index of various companies is uneven. In addition, LED has also been proved that LED blue light will pose a threat to the health of the fundus and easily induce related ophthalmic diseases, which has become a restrictive problem for the promotion and application of LED lighting products. [0003] The color rendering index refers to the degree to which an object restores its essential color when it is illuminated by a certain lig...

AI Technical Summary

Problems solved by technology

[0006] ⑴Currently, the cost of the existing scheme is relatively high by adjusting the coating material

[0007] (2) And through the adjustment of the coating material, it is easily affected by the temperature during use

[0008] (3) Some increase the color rendering index of R9 by adding red powder, and the cost is higher

[0009] ⑷The scheme of adding red, green and blue lamp beads cannot effectively reduce the interference of blue light, and at the same time cannot arbitrarily adjust the brightness and chromaticity of the light to achieve the effect of improving the color rendering index

Its shortcoming is that it only reduces the energy ratio of blue light by increasing red and green, but the harm of blue light itself has not been weakened, that is, no other technology has been used to reduce blue light, and it has not mentioned how to effectively improve the color rendering index.

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