Control system and its method for lighting brightness color

A lighting brightness and color control technology, applied in the field of light source brightness and color control systems, can solve problems such as high cost, inability to apply color sequences, and complex corrections

Active Publication Date: 2011-05-25
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the multi-wavelength monitor used in this method must cooperate with multiple optical sensors of different wavelengths, so the calibration is also more complicated, and the cost is also higher, and it cannot be applied to the technology of color sequence

Method used

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  • Control system and its method for lighting brightness color
  • Control system and its method for lighting brightness color
  • Control system and its method for lighting brightness color

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Embodiment Construction

[0041] clear reference figure 1 , is a schematic diagram of the timing sequence of light source signal sampling in the embodiment of the present invention, wherein the point light source can be realized by using multi-wavelength diode light sources in practice, and the length of the diode conduction time of each wavelength diode is different according to the difference in luminous efficiency. First, the generation The first upper edge trigger signal 1a is used to drive the red light source diode (not shown) to conduct for a predetermined period of time, and to perform sensing and sampling during the conduction time of the red light source diode to obtain the light source intensity signal generated by the red light source diode value.

[0042] Next, generate the first lower-edge trigger signal 1b to turn off the red light source diode, and at the same time, generate the second upper-edge trigger signal 2a to drive the green light source diode (not shown) to conduct for a predet...

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Abstract

A light brightness color control system and its method, use the way of time-division, which detects the light source intensity valve of the sampling point through a single source sensor, and then calculates the light source intensity valve of different wavelength with a set color brightness value, to obtain an amendment current value, then returns the current value to the source drive unit, to adjust the brightness color value of diode source to be the stable state.

Description

technical field [0001] The invention relates to a system and method for controlling the brightness and color of a light source, in particular to a system and method for controlling the brightness and color of a point light source (for example, a multi-wavelength diode light source). Background technique [0002] The currently used diode light source lighting module, because of its high luminance, no mercury, high color reproducibility and high fineness, makes it endow the LCD panel with higher added value, which makes the application of the diode light source lighting module span The field of portable electronic products has spread rapidly to the fields of vehicles (cars, airplanes, subways, etc.), displays, small projection systems, and televisions. However, the problem of unstable brightness due to factors such as temperature and aging, It affects the lighting quality of the diode light source lighting module, so how to effectively control the brightness of the monochromat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H05B33/08H05B44/00
CPCY02B20/42Y02B20/40
Inventor 黄瑞峯卢俊德
Owner IND TECH RES INST
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