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Temperature control device and method for laser display light source and laser display device

A technology of temperature control device and laser display, which is applied in the direction of temperature control, laser cooling device, laser parts, etc., can solve the problem of continuous working time and volume increase of the laser, so as to prolong the continuous working time and delay the temperature rise Speed, overcoming the effect of volume increase

Active Publication Date: 2012-08-22
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the measures taken in the prior art to prolong the continuous working time of the laser have resulted in an increase in the volume of the entire device

Method used

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  • Temperature control device and method for laser display light source and laser display device
  • Temperature control device and method for laser display light source and laser display device
  • Temperature control device and method for laser display light source and laser display device

Examples

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Effect test

Embodiment 1

[0023] figure 1 Embodiment 1 of the present invention provides a temperature control device for a laser display light source. The temperature control device controls the current of the laser to achieve temperature control. Among them, the laser dissipates heat through the radiator, and there can be various connection relationships between the radiator and the laser, as long as the heat of the laser can be transferred to the radiator and dissipated by the radiator, for example, it can be used between the laser and the laser. A heat conduction device is provided between the radiators, and the heat conduction device is used to efficiently export the heat of the laser to the radiator.

[0024] Such as figure 1 As shown, the temperature control device in this embodiment includes: a first calculation unit 101 and a current adjustment unit 102 .

[0025] The first calculation unit 101 is used to calculate the difference between the current temperature of the radiator and the ambien...

Embodiment 2

[0061] image 3 A schematic diagram of one form of the laser display device provided by this embodiment is shown. Such as image 3 As shown, the laser display device includes a heat sink 301 and a laser 302 that dissipates heat through the heat sink 301 . It should be noted that those skilled in the art should understand that the laser display device also includes devices such as an optical engine and a projection lens. image 3 is not shown in , and will not be repeated here.

[0062]The heat sink 301 and the laser 302 are preferably provided with a heat conduction device, and the laser 302 is connected to the heat sink 301 through the heat conduction device. image 3 In particular, the heat conduction device includes a heat conduction plate 304, a semiconductor cooler (TEC) 305 and a heat pipe 306 as an example, wherein the laser 302 is connected to the cold end of the semiconductor cooler 305 through the heat conduction plate 304, and one end of the heat conduction pipe ...

Embodiment 3

[0069] This embodiment correspondingly provides a method for controlling the temperature of a laser display light source, wherein the laser display light source includes a radiator and a laser that dissipates heat through the radiator. Such as Figure 5 As shown, the method includes the following steps:

[0070] Step S501: Calculate the difference between the current temperature of the radiator and the ambient temperature, and multiply the obtained difference by the current adjustment coefficient to obtain the current adjustment value;

[0071] Step S502: Decrease the current applied to the laser, and the current reduction amount is equal to the obtained current adjustment value.

[0072] Preferably, step S500 is also performed before step S501: calculate the current adjustment coefficient, the current adjustment coefficient is the maximum operating temperature difference of the radiator divided by the thermal resistance between the laser and the radiator, and then divided by...

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Abstract

The embodiment of the invention discloses a temperature control device and a method for a laser display light source, and a laser display device. The temperature control unit of the laser display light source controls the current of a laser, the laser radiates through a radiator; the temperature control unit comprises a first computing unit and a current regulation unit, the first computing unit is used for computing the difference between the current temperature and the ambient temperature and then multiplying the difference by a current regulation factor to obtain a current regulation value, the current regulation unit is used for reducing the current applied to the laser, and the decrement of the current is equal to the obtained current regulation value. By the embodiment of the invention, the continuous working hours of the laser in the laser display source can be prolonged.

Description

technical field [0001] The invention belongs to the field of laser display, and in particular relates to a temperature control device and method of a laser display light source and a laser display device. Background technique [0002] Laser display technology has the characteristics of large color gamut and low energy consumption, and is considered to be the next-generation mainstream display technology. At present, laser display has begun to find applications in television, projection, commercial and entertainment systems. The laser light source is an important part of the laser display system, and it is also the main difference between laser display technology and other display technologies. The light-emitting component in the laser light source device is the laser. In the practical application of the laser display system, the temperature of the laser is required to be controlled at a constant value. If the temperature of the laser is too high, the wavelength of the outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/20H01S3/04
Inventor 张海翔陈昱刘卫东郭大勃
Owner HISENSE VISUAL TECH CO LTD
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