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Temperature compensation-based projector illuminating method and device thereof

A lighting method and temperature compensation technology, applied in the field of projector lighting, can solve problems such as unsatisfactory white light spectrum, achieve the effect of overcoming temperature drift caused by LEDs and improving quality

Inactive Publication Date: 2011-02-09
FUJIAN NETCOM TECH
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Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is to provide a projector lighting method based on temperature compensation, which overcomes the unsatisfactory white light spectrum when the white light LED is used as a projection light source, and eliminates the influence of temperature drift on the LED projection effect adverse effects

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  • Temperature compensation-based projector illuminating method and device thereof
  • Temperature compensation-based projector illuminating method and device thereof
  • Temperature compensation-based projector illuminating method and device thereof

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Embodiment Construction

[0023] refer to Figure 1 to Figure 5 , the specific embodiments of the present invention will be described in detail.

[0024] Such as figure 1 , is a schematic flowchart of a method for illuminating a projector based on temperature compensation in the present invention. Include the following steps:

[0025] 001. Use red, green and blue primary color LED arrays to simulate white light as a white light source for projection;

[0026] 002. Collect the data of the LED array of three primary colors, and then calculate the temperature value of the LED array through the temperature measurement circuit according to the collected data;

[0027] 003. According to the feedback of the calculated temperature value, use the control circuit to adjust the operating current of the LED array, so as to control the luminous effect of the three-primary-color LED array at this temperature value, that is, if the temperature value of the three-primary-color LED array After rising to a certain t...

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Abstract

The invention provides a temperature compensation-based projector illuminating method. The method comprises the following steps of: simulating white light serving as a light source by using a red-green-blue tricolor light-emitting diode (LED) array; acquiring data of the LED array and calculating the temperature value of the LED array according to the acquired data; and adjusting the working current of the LED array according to the feedback of the temperature value so as to control the luminescence effect of the tricolor LED array under the temperature value. A device of the illuminating method comprises the LED array, a temperature sensor, a temperature measuring circuit and a control circuit, wherein the LED array is used for providing a white light source; the temperature sensor is used for acquiring the data of the LED array; the temperature measuring circuit is used for calculating the temperature value according to the data acquired by the temperature sensor; and the control circuit is used for adjusting the working current of the LED array according to the feedback temperature value so as to control the luminescence effect of the LED array under the temperature value. The situation of non-ideal white light spectrum when a white-light LED is taken as a projecting light source is avoided and adverse effects of temperature drift on the LED projecting effect are eliminated.

Description

【Technical field】 [0001] The invention relates to the field of projector lighting, in particular to a projector lighting method with temperature compensation and a device thereof. 【Background technique】 [0002] The projector light source system usually uses high-brightness bulbs or high-brightness LEDs as the light source. However, due to the limited service life of the light bulb, it needs to be replaced after a certain period of time, and the cost of use is high. Due to the characteristics of high luminous efficiency, long service life and small size, LEDs have been more and more widely used in projectors. Because LEDs have temperature drift characteristics (the parameters such as LED luminous efficiency and light wave wavelength will change with the change of temperature), LED itself will generate a lot of heat when it is working, and the projector is limited by volume and cost. Not ideal, so LED temperature drift is serious. At the same time, due to limitations in te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02F21V19/00F21S2/00G03B21/20
CPCH05B33/0872G03B21/2033G03B21/2053H04N9/3111H04N9/3155G09G2320/041G09G3/3413G09G2320/0666H05B45/28
Inventor 张嵘
Owner FUJIAN NETCOM TECH
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