WO2012024862A1 - 一种基于温度补偿的投影仪照明方法及其装置 - Google Patents

一种基于温度补偿的投影仪照明方法及其装置 Download PDF

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Publication number
WO2012024862A1
WO2012024862A1 PCT/CN2010/078911 CN2010078911W WO2012024862A1 WO 2012024862 A1 WO2012024862 A1 WO 2012024862A1 CN 2010078911 W CN2010078911 W CN 2010078911W WO 2012024862 A1 WO2012024862 A1 WO 2012024862A1
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led
led array
array
temperature
green
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PCT/CN2010/078911
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English (en)
French (fr)
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张嵘
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福建网讯科技有限公司
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Publication of WO2012024862A1 publication Critical patent/WO2012024862A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/28—Controlling the colour of the light using temperature feedback
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

Definitions

  • the present invention relates to the field of projector illumination, and more particularly to a projector illumination method with temperature compensation and an apparatus therefor. Background technique
  • Projector light source system usually with a high-brightness bulb or a high-brightness LED as a light source. Due to the limited service life of the bulb, it needs to be replaced after a certain period of time, and the cost of use is high. Due to its high luminous efficiency, long service life and small size, LEDs have become more and more widely used in projectors. Because the LED has temperature drift characteristics (LED luminous efficiency, light wavelength and other parameters will change with temperature), the LED itself will generate a lot of thermal energy when it is working, and the projector is cooled due to volume, cost and other restrictions. Not ideal, so LED temperature drift is serious. At the same time, white light LED is not ideal due to technical and cost constraints. As a projector light source, the image quality is not high. After the white LED produces temperature drift, it cannot accurately control its color temperature. The illumination level must be cooled before it can reach The ideal effect. This makes the already poor projection effect discount again.
  • the Chinese invention patent No. CN200580032859.X the publication number is CN101061583, the disclosure of which is hereby incorporated by reference.
  • the adjustment of the operating current of the LED chip is based on the temperature collected by the temperature sensor. In order to achieve an LED chip with a high operating current, it has a long working time, which reduces the risk of thermal overload. However, there is currently no expression for adjusting the operating current of the LED chip to control the spectrum of the white light led as a light source. Summary of the invention
  • One of the technical problems to be solved by the present invention is to provide a projector illumination method based on temperature compensation, which overcomes the unsatisfactory white light spectrum when white light LED is used as a projection light source. And eliminate the adverse effects of temperature drift on the LED projection effect.
  • the second technical problem to be solved by the present invention is to provide a projector device based on temperature compensation, which overcomes the unsatisfactory white light spectrum when white light LED is used as a projection light source, and eliminates the effect of temperature drift on the LED projection effect. Bad effects.
  • a temperature compensation based projector illumination method comprising the following steps:
  • the step 003 further includes: adjusting the average current of the led array to change the illuminating power to improve the illuminating power of the led array because the temperature change deviates from the standard value, thereby controlling the LED array illuminating effect.
  • a temperature compensation based projector device comprising: a carrier having a high thermal conductivity; a LED array consisting of red, green and blue LEDs arranged in a primary color, and Fixed on the carrier, providing a white light source; a temperature sensor fixed on the carrier for collecting data of the LED array; a temperature measuring circuit, one end connected to the temperature sensor, and the data collected according to the temperature sensor Calculating the temperature value; a control circuit, one end connected to the temperature measuring circuit, the other end connected to the led array, adjusting the working current of the led array according to the calculated temperature value, and controlling the lighting effect of the led array at the temperature value.
  • the LED array is arranged by a group of arrays of a ⁇ ⁇ group, and any one of the arrays of the singular type has a single red led, a single green led, and a single blue led is a font. arrangement.
  • the LED array is arranged by an array group of MXN groups, and any array of the fonts is arranged by a single red led, a single green led, and a single blue led.
  • the LED array is arranged by the M ⁇ N group in a rectangular array group, and any of the rectangular array groups consists of a single red led, two green led, and a single blue led is 2 x 2 arranged, and two greens are on a diagonal line, above M And N is a natural number greater than or equal to 1.
  • the invention utilizes the red, green and blue trichromatic LED array to simulate the white light spectrum, which can overcome the problem that the white light of the white light is not ideal, and improves the quality of the projected image;
  • the three primary color led array can be a word, or a font, or a rectangle, we can increase the number of led array groups as needed to achieve the desired lighting effect;
  • FIG. 1 is a flow chart of a method for lighting a projector based on temperature compensation according to the present invention.
  • FIG. 2 is a schematic structural view of an embodiment of a projector illumination device based on temperature compensation according to the present invention.
  • FIG. 3 is a schematic structural view of an embodiment of the LED array of FIG. 2, showing a case where the three primary color led array is composed of at least one set of in-line arrays.
  • FIG. 4 is a schematic structural view of another embodiment of the led array of FIG. 2, showing a case where the three primary color led array is composed of at least one set of the array of characters.
  • FIG. 5 is a schematic structural view of still another embodiment of the LED array of FIG. 2, showing a case where the three primary color led array is composed of at least one set of rectangular arrays. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to Figures 1 to 5, a specific embodiment of the present invention will be described in detail.
  • FIG. 1 is a schematic flow chart of a method for lighting a projector based on temperature compensation according to the present invention. Including the following steps:
  • the control circuit uses a control circuit to adjust the operating current of the LED array, thereby controlling the illumination effect of the three primary color LED array at the temperature value, that is, if the temperature value of the three primary color LED array After rising to a certain temperature, the led array produces a temperature drift, and the red, green, and blue led light effects have an adverse effect. Finally, the simulated white light spectrum does not meet the requirements that need to be met. At this time, the LED is adjusted by the control circuit.
  • the working current changes the average current value, thereby improving the luminous power of the LED, so that the red, green and blue LEDs can all be in the standard value range of the respective luminous power, so that the LED lamp is at the temperature Under the value, it can adjust its own luminous effect.
  • the white light spectrum simulated by the last three primary color LED arrays can still meet the required requirements, overcome the adverse effects caused by temperature drift, and improve the image quality.
  • the present invention also provides a projector illumination device based on temperature compensation, as shown in Fig. 2, which is a schematic view of an embodiment of a projector illumination device of the present invention.
  • the projector illumination device of this embodiment comprises: a carrier (not shown), a led array 2, a temperature sensor 3, a temperature measuring circuit 4, and a control circuit 5.
  • the led array 2 and the temperature sensor 3 are disposed on the carrier, and the temperature sensor 3 and the LED array 2 are connected; the temperature sensor 3, the temperature measuring circuit 4, the control circuit 5, and the led array 2 are sequentially connected.
  • the carrier body is made of a material having a high thermal conductivity, such as a heat dissipation substrate.
  • the led array 2 is composed of red, green and blue primary colors led in a regular pattern; as a projected white light source.
  • the LED array 2 may be arranged by an MXN group in a group of arrays, and any one of the inline arrays consists of a single red led, a single green led, and a single blue led. Arranged in a line.
  • M and N are natural numbers greater than or equal to 1.
  • the LED array 2 is arranged by an array group of MXN groups in a font type, and any of the arrays of the font type is composed of a single red led, a single green led, and a single blue. Led is arranged in a font.
  • M and N are natural numbers greater than or equal to 1.
  • the LED array 2 is arranged by a matrix group of MXN groups in a rectangular shape, and any of the rectangular array groups consists of a single red led, two green led, and a single
  • the blue LEDs are arranged in a 2 x 2 arrangement, and the two greens are on a diagonal line, where M and N are natural numbers greater than or equal to one.
  • the temperature sensor 3 is configured to collect data of the LED array 2.
  • the temperature measuring circuit 4 calculates a temperature value based on the data collected by the temperature sensor 3.
  • the control circuit 5 adjusts the operating current of the LED array 2 according to the temperature value calculated by the temperature measuring circuit 4, and controls the luminous effect of the LED array 2 at the temperature value.
  • the LED array 2 When the temperature value of the LED array 2 rises to a certain temperature, the LED array 2 will generate a temperature drift, and the red, green, and blue LEDs have a bad effect, and the simulated white light spectrum cannot reach the temperature. Need to meet the requirements, at this time, through the control circuit 5 to adjust the operating current of the LED array 2, such as by changing the duty cycle of the current, change the average current value, in order to improve the red, green, blue led luminous power, so that red
  • the green and blue LEDs can all be in the standard value range of the respective luminous powers, so that the red, green, and blue LEDs can adjust their own luminous effects at the temperature value, and the white light spectrum simulated by the last three primary color LED arrays 2 can still satisfy
  • the required requirements overcome the adverse effects of temperature drift and improve the quality of the image.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Device Packages (AREA)
  • Led Devices (AREA)

Description

一种基于温度补偿的投影仪照明方法及其装置 技术械
本发明涉及一种投影仪照明领域， 尤其是涉及一种具有温度补偿的 投影仪照明方法及其装置。 背景技术
投影仪光源系统， 通常采用高亮灯泡， 或是高亮 LED作为光源。 而 灯泡由于使用寿命有限， 使用一定时间后就需更换， 使用成本高。 LED 由于发光效率高， 使用寿命长， 体积小等特点， 在投影仪中得到了越来 越广泛的运用。 因为 LED存在温漂特性（LED的发光效率、 光波波长 等参数会随着温度的变化而变化）， LED自身在工作时， 又会产生大量 的热能， 而且投影仪由于体积、 成本等限制， 散热不理想， 所以 LED温 漂现象严重。 同时,白光 LED由于技术、 成本等限制， 白光光谱并不理 想， 作为投影仪光源， 图像成像质量不高， 白光 LED产生温漂后， 无法 精确控制其色温， 照明度， 必须降温后才可能达到理想效果。 这使其本 已不佳的投影效果再次打折。
申请号为 CN200580032859.X, 公开号为 CN101061583 , 公开日为 2007.10.24 的中国发明专利公开了一种具有至少两个 LED 芯片（2)的 LED阵列， 所述 LED阵列包含温度传感器， 并且设置有根据由所述温 度传感器采集的温度对 LED芯片的工作电流进行的调节。以实现具有高 的工作电流的 LED芯片具有较长的工作时间， 而降低了热过载的危险。 但目前还没有通过调节 LED芯片的工作电流来控制白光 led的光谱作为 光源时发光效果不够理想的问题的任何表述。 发明内容
本发明要解决的技术问题之一， 在于提供一种基于温度 卜偿的投影 仪照明方法，它克服了白光 led作为投影光源时白光光谱不理想的情况， 并消除了温漂对 led投影效果产生的不良影响。
本发明要解决的技术问题之二， 在于提供一种基于温度 卜偿的投影 仪装置， 它克服了白光 led作为投影光源时白光光谱不理想的情况， 并 消除了温漂对 led投影效果产生的不良影响。
本发明要解决的技术问题之一是这样实现的： 一种基于温度补偿的 投影仪照明方法， 包括以下步骤：
001、 利用红、 绿、 蓝三基色 led阵列模拟白光， 作为光源；
002、 采集所述 led阵列的数据， 根据所采集到的数据计算出 led阵 列的温度值；
003、 根据所计算出来温度值的反馈， 调节 led阵列的工作电流， 控 制三基色 led阵列在该温度值下的发光效果。
进一步地， 所述步骤 003进一步包括， 调节 led阵列的平均电流来 改变发光功率， 以改善 led阵列的发光功率因为温度变化偏离标准值的 情况， 以此控制 led阵列发光效果。
本发明要解决的技术问题之二是这样实现的： 基于温度补偿的投影 仪装置， 其包括： 一承载体， 导热系数高； 一 led阵列， 由红、 绿、 蓝 三基色 led排列组成， 并固定在所述承载体上， 提供白光源； 一温度传 感器， 固定在所述承载体上， 用于采集所述 led阵列的数据； 一温度测 量电路，一端连接温度传感器，根据温度传感器采集的数据计算温度值； 一控制电路， 一端连接温度测量电路， 另一端连接 led阵列， 根据所计 算的温度值调节 led阵列的工作电流，控制 led阵列在该温度值下的发光 效果。
其中， 所述 led阵列由 Μ χ Ν组呈一字型的阵列组排列而成， 且任 一所述一字型的阵列组由单个红色 led、 单个绿色 led、 单个蓝色 led呈 一字型排列。 或者是： 所述 led阵列由 M X N组呈品字型的阵列组排列 而成， 且任一所述品字型的阵列组由单个红色 led、 单个绿色 led、 单个 蓝色 led呈品字型排列。 还或者是： 所述 led阵列由 M χ N组呈矩型的 阵列组排列而成， 且任一所述矩型的阵列组由单个红色 led、 两个绿色 led,单个蓝色 led呈 2 x 2排列， 并且两个绿色处于一对角线上，上述 M 和 N为大于等于 1的自然数。
本发明具有如下优点：
1、 本发明利用红绿蓝三基色 led阵列模拟白光光谱， 可以克服白光 led的光语作为光源时不够理想的问题， 提升了投影图像的质量；
2、 三基色 led阵列可以呈一字型， 或品字形， 或矩形， 我们可以根 据需要增加 led阵列组的数量， 来达到所需要的发光效果；
3、通过采集 led阵列的温度，并根据温度来调节工作电流，控制 led 阵列在该温度值下的发光效果， 使 led灯的发光光谱达到需求， 克服了 由于温度的上升导致 led产生温漂， led产生温漂后投影效果受到影响的 问题。 附图说明
下面参照附图结合实施例对本发明作进一步的说明。
图 1为本发明一种基于温度补偿的投影仪照明方法的流程图。
图 2为本发明一种基于温度补偿的投影仪照明装置一实施例的结构 示意图。
图 3为图 2中 led阵列一实施例的结构示意图， 显示了三基色 led 阵列， 由至少一组呈一字型的阵列组成时候的情况。
图 4为图 2中 led阵列另一实施例的结构示意图，显示了三基色 led 阵列， 由至少一组呈品字形的阵列组成时候的情况。
图 5为图 2中 led阵列又一实施例的结构示意图，显示了三基色 led 阵列， 由至少一组呈矩形的阵列组成时候的情况。 具体实施方式 参阅图 1至图 5 , 对本发明的具体实施例进行详细说明。
如图 1 , 为本发明一种基于温度补偿的投影仪照明方法的流程示意 图。 包括下述步骤：
001、 利用红、 绿、 蓝三基色 led阵列模拟白光， 作为投影的白光光 源；
002、 采集所述三基色 led阵列的数据， 再根据所采集到的数据通过 温度测量电路计算出 led阵列的温度值；
003、 根据所计算出来温度值的反馈， 利用控制电路来调节 led阵列 的工作电流， 以此控制三基色 led阵列在该温度值下的发光效果， 即如 果当所述三基色 led阵列的温度值上升到一定的温度后， led阵列产生温 漂， 红、 绿、 蓝 led的发光效果产生了不良影响， 最后模拟出来的白光 光谱达不到所需要满足的要求， 这时候， 通过控制电路调节 led的工作 电流， 如通过改变电流的占空比， 改变平均电流值， 以此来改善 led的 发光功率， 使得红绿蓝 led都能够处于各自的发光功率的标准值范围， 使得 led灯在该温度值下， 能够调整自己的发光效果， 最后三基色 led 阵列模拟出来的白光光谱仍然可以满足所需要的要求， 克服了温漂带来 的不利影响， 提升图像的质量。
为实现本发明方法， 本发明还提供一种基于温度补偿的投影仪照明 装置， 如图 2所示， 其为本发明投影仪照明装置的一实施例的示意图。 本实施例的投影仪照明装置包括： 一承载体（未图示） 、 一 led阵列 2, 一温度传感器 3 , —温度测量电路 4, 一控制电路 5。 所述 led阵列 2和 温度传感器 3设置于所述承载体上，且温度传感器 3和 led阵列 2连接； 所述温度传感器 3、 温度测量电路 4、 控制电路 5 以及 led阵列 2依次 连接。
所述承载体采用体导热系数高的材质所制， 如散热基板等。
所述 led阵列 2由红、绿、蓝三基色 led按一定规律排列组成； 作为 投影的白光光源。
如图 3所示， 所述 led阵列 2可以由 M X N组呈一字型的阵列组排 列而成， 且任一所述一字型的阵列组由单个红色 led、 单个绿色 led、 单 个蓝色 led呈一字型排列。 其中， M和 N为大于等于 1的自然数。
或者是如图 4所示， 所述 led阵列 2由 M X N组呈品字型的阵列组 排列而成， 且任一所述品字型的阵列组由单个红色 led、 单个绿色 led、 单个蓝色 led呈品字型排列。 其中， M和 N为大于等于 1的自然数。
还可以是如图 5所示： 所述 led阵列 2由 M X N组呈矩型的阵列组 排列而成， 且任一所述矩型的阵列组由单个红色 led、 两个绿色 led、 单 个蓝色 led呈 2 x 2排列， 并且两个绿色处于一对角线上， 其中， M和 N 为大于等于 1的自然数。
所述温度传感器 3 , 用于采集所述 led阵列 2的数据。
所述温度测量电路 4, 根据温度传感器 3采集的数据计算温度值。 所述控制电路 5 , 根据温度测量电路 4所计算的温度值调节 led阵 列 2的工作电流， 控制 led阵列 2在该温度值下的发光效果。
当所述 led阵列 2的温度值上升到一定的温度后， 所述 led阵列 2 会产生温漂， 红、 绿、 蓝 led的发光效果产生了不良影响， 最后模拟出 来的白光光谱达不到所需要满足的要求， 这时候， 通过控制电路 5调节 led阵列 2的工作电流， 如通过改变电流的占空比， 改变平均电流值， 以此来改善红、 绿、 蓝 led的发光功率， 使得红、 绿、 蓝 led都能够处于 各自的发光功率的标准值范围， 使得红、 绿、 蓝 led在该温度值下能够 调整自己的发光效果， 最后三基色 led阵列 2模拟出来的白光光谱仍然 可以满足所需要的要求，克服了温漂带来的不利影响，提升图像的质量。
基于本发明中的实施例， 本领域普通技术人员在没有做出创造性的 劳动的前提下， 所获得的所有其他实施例， 都属于本发明保护的范围。

Claims

权 利 要 求 书
1、 一种基于温度补偿的投影仪照明方法， 其特征在于， 包括以下步 骤：
001、 利用红、 绿、 蓝三基色 led阵列模拟白光， 作为光源；
002、 采集所述 led阵列的数据， 根据所采集到的数据计算出 led阵 列的温度值；
003、 根据所计算出来温度值的反馈， 调节 led阵列的工作电流， 控 制三基色 led阵列在该温度值下的发光效果。
2.根据权利要求 1所述的一种基于温度补偿的投影仪照明方法，其 特征在于： 所述步骤 003进一步包括， 调节 led阵列的平均电流来改变 发光功率，以改善 led阵列的发光功率因为温度变化偏离标准值的情况， 以此控制 led阵列发光效果。
3. 根据权利要求 1所述的一种基于温度补偿的投影仪照明方法，其 特征在于： 所述 led阵列由 M X N组呈一字型的阵列组排列而成， M和
N为大于等于 1的自然数， 且任一所述一字型的阵列组由单个红色 led、 单个绿色 led、 单个蓝色 led呈一字型排列。
4. 根据权利要求 1所述的一种基于温度补偿的投影仪照明方法，其 特征在于： 所述 led阵列由 M X N组呈品字型的阵列组排列而成， M和 N为大于等于 1的自然数， 且任一所述品字型的阵列组由单个红色 led、 单个绿色 led、 单个蓝色 led呈品字型排列。
5.根据权利要求 1所述的一种基于温度补偿的投影仪照明方法，其 特征在于： 所述 led阵列由 M X N组呈矩型的阵列组排列而成， M和 N 为大于等于 1 的自然数， 且任一所述矩型的阵列组由单个红色 led、 两 个绿色 led、单个蓝色 led呈 2 X 2排列，并且所述两个绿色 led处于一对 角线上。
6. 一种根据权利要求 1所述的照明方法的装置， 其特征在于， 它包 括： 一承载体， 导热系数高； 一 led阵列， 由红、 绿、 蓝三基色 led 排列组成， 并固定在所述承载体上， 提供白光源； 一温度传感器， 固定在所述承载体上， 用于采集所述 led阵列的数据； 一温度测量 电路， 一端连接温度传感器， 根据温度传感器采集的数据计算温度 值； 一控制电路， 一端连接温度测量电路， 另一端连接 led阵列， 根据所计算的温度值调节 led阵列的工作电流，控制 led阵列在该温 度值下的发光效果。
7. 根据权利要求 6所述的一种装置， 其特征在于： 所述温度传感器 为热电偶， 或热敏电阻， 或半导体部件； 所述承载体为散热基板。
8. 根据权利要求 6所述的一种装置， 其特征在于： 所述 led阵列由 Μ χ Ν组呈一字型的阵列组排列而成， Μ和 Ν为大于等于 1的自然数， 且任一所述一字型的阵列组由单个红色 led、单个绿色 led、单个蓝色 led 呈一字型排列。
9. 根据权利要求 6所述的一种装置， 其特征在于： 所述 led阵列由 M X N组呈品字型的阵列组排列而成， M和 N均为大于等于 1的自然数， 且任一所述品字型的阵列组由单个红色 led、单个绿色 led、单个蓝色 led 呈品字型排列。
10.根据权利要求 6所述的一种装置， 其特征在于： 所述 led阵列 由 Μ χ N组呈矩型的阵列组排列而成， M和 N为大于等于 1的自然数， 且任一所述矩型的阵列组由单个红色 led、 两个绿色 led、 单个蓝色 led 呈 2 X 2排列， 并且所述两个绿色 led处于一对角线上。
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