Title:
CONTROL METHOD FOR ADAPTIVELY ADJUSTING BRIGHTNESS, CHROMATICITY, AND COLOR TEMPERATURE OF LIGHT SOURCE
Document Type and Number:
WIPO Patent Application WO/2021/072679
Kind Code:
A1
Abstract:
A control method for adaptively adjusting the brightness, chromaticity, and color temperature of a light source, comprising: (1) initializing a system; (2) respectively setting initial current gains of a red light (43), a green light (42), and a white light (41); a spectroscope acquires spectral curves of light beads to obtain the chromaticity, brightness, and color temperature thereof; (3) according to the acquired spectral curve of the white light (41), selecting a corresponding filter (3) for placing in front of the white light (41); (4) acquiring the chromaticity, brightness, and color temperature values of the red light (43), the green light (42), and the white light (41) passing through the filter (3); (5) setting the brightness, chromaticity, and color temperature values after mixing the lights, and obtaining theoretical adjustment values of the red, green, and white lights according to an algorithm for increasing the color rendering index of LED lights to approximate the natural spectrum; (6) setting current gains; (7) acquiring the chromaticity, brightness, and color temperature of the red light (43), the green light (42), and the white light (41) passing through the filter (3) in the current current gain; (8) determining abs((Yr
'-Yr
t)/Yr
t)≤Δe&&abs((Yg
'-Yg
t)/Yg
t)≤Δe&&abs((Yw
'-Yw
t)/Yw
t)≤Δe; (9) if it is determined as no, returning to step (6); and (10) if it is determined as yes, the current current gain satisfies the requirements: i r + Δi r, i g + Δi g, and i w + Δi w.
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| WO/1998/057524 | AN INVERTER CIRCUIT FOR ILLUMINATING AN ELECTROLUMINESCENT LAMP |
| WO/2010/009112 | STABLE LIGHT SOURCE |
Inventors:
XIAO GAOLI (CN)
Application Number:
PCT/CN2019/111483
Publication Date:
April 22, 2021
Filing Date:
October 16, 2019
Export Citation:
Assignee:
XIAO GAOLI (CN)
International Classes:
H05B44/00; F21V14/08
Foreign References:
| CN103925533A | 2014-07-16 | |||
| CN102858054A | 2013-01-02 | |||
| CN108463024A | 2018-08-28 | |||
| CN102141210A | 2011-08-03 | |||
| CN102548112A | 2012-07-04 | |||
| US7453195B2 | 2008-11-18 |
Attorney, Agent or Firm:
SHENZHEN HUIBANG INTELLECTUAL PROPERTY AGENCY FIRM (CN)
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