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An electro-optic device and control method

An electro-optical device and control unit technology, applied in the direction of electric light source, lighting device, electric lamp circuit layout, etc., can solve the problems of narrow single spectrum of three-color LED, cannot meet the needs of comfortable lighting and create light environment, and meet the needs of special light environment , reduce flicker and spectral shift, and prevent damage

Active Publication Date: 2017-04-19
刘红超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These schemes have greatly improved the spectrum of a single white LED, but because the single spectrum of the three primary color LEDs is relatively narrow, the synthesized spectrum still does not constitute a continuous spectrum, and these schemes cannot meet the needs of comfortable lighting and creating a light environment

Method used

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  • An electro-optic device and control method

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Experimental program
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Effect test

Embodiment 1

[0045] image 3 It is a full-spectrum lighting realization method that uses white LEDs, monochromatic yellow LEDs, and red LEDs as three groups of light-emitting devices as light-emitting units. The three sets of spectral signal acquisition unit collects three sets of spectral component data, corresponding to the percentage of each light-emitting device of white LED, yellow LED, and red LED. The form of the calibrated spectrum chart is used to help users intuitively feel the color temperature or color atmosphere that needs to be adjusted, combined with touching or approaching the controller to collect the digital signal of the spectrum or color temperature selected by the user, and convert it into a corresponding three-dimensional The corresponding contribution composition percentage of each light-emitting device. The calibration of the spectrum or color temperature is to convert the characteristic spectrum of each group of light-emitting devices into a standard color tempera...

Embodiment 2

[0048] Embodiment two see Figure 4 . The electro-optical device can be used to control the intelligent light environment for the growth of agricultural animals and plants. Because animals and plants have different requirements on the spectrum in different growth periods, the spectrum adjustment range is required to be wider. The light-emitting unit adopts four groups of light-emitting elements: white LEDs, blue LEDs, green LEDs, and red LEDs excited by ultraviolet or blue phosphor powder. The difference from Embodiment 1 is that because the electro-optical device uses four sets of light-emitting elements, four channels of corresponding spectrum acquisition signals are required, four channels of PWM signal control are required, and the constant current control unit needs to control four channels of constant current output. The spectral signal acquisition unit is made into an independent module, powered independently, and then sent to the subsequent unit wirelessly through th...

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Abstract

The invention relates to an electro-optical device and a control method. The electro-optical device comprise a power supply unit, a spectral signal acquiring unit, a spectrum control unit, a constant-current control unit, a brightness control unit, and a light-emitting unit. The spectral signal acquiring unit and the constant-current control unit are connected with the spectrum control unit. The light-emitting unit is connected with the brightness control unit and the constant-current control unit. Multiple light-emitting devices are controlled by current pulse width and current amplitude. Thus, the spectral components of the electro-optical device are added; stimulation of blue light and strobe on human bodies are reduced; an energy-efficient requirement is satisfied; and the controllability of the electro-optical device is improved. The electro-optical device can be widely used in control of various illumination and light environments.

Description

technical field [0001] The present invention relates to electro-optic technology, in particular to the spectrum and control technology of electro-optic light sources, especially to adjust the spectral distribution and brightness of light emitted by light-emitting devices according to different environments and the preferences of objects to be illuminated, so as to reduce or avoid the harmful effects of useless or harmful spectra. The illuminated object produces side effects, creates a comfortable light environment, and at the same time achieves the purpose of saving energy. It is suitable for solid luminescence, gas luminescence daily lighting, light environment control, animal and plant growth control lighting and other special lighting fields. Background technique [0002] A new generation of energy-saving lighting technology semiconductor light-emitting devices represented by LEDs has increasingly attracted the attention of governments and folks in various countries. Comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 刘红超刘知常
Owner 刘红超