WO2016165448A1 - 一种基于led的智能对色灯箱 - Google Patents

一种基于led的智能对色灯箱 Download PDF

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WO2016165448A1
WO2016165448A1 PCT/CN2016/072280 CN2016072280W WO2016165448A1 WO 2016165448 A1 WO2016165448 A1 WO 2016165448A1 CN 2016072280 W CN2016072280 W CN 2016072280W WO 2016165448 A1 WO2016165448 A1 WO 2016165448A1
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light source
light
led
color
source group
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PCT/CN2016/072280
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English (en)
French (fr)
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潘建根
黄英
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杭州远方光电信息股份有限公司
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Priority claimed from CN201510172624.6A external-priority patent/CN104748848B/zh
Priority claimed from CN201520219078.2U external-priority patent/CN204788660U/zh
Application filed by 杭州远方光电信息股份有限公司 filed Critical 杭州远方光电信息股份有限公司
Publication of WO2016165448A1 publication Critical patent/WO2016165448A1/zh

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02Details
    • G01J3/10Arrangements of light sources specially adapted for spectrometry or colorimetry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46Measurement of colour; Colour measuring devices, e.g. colorimeters
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B35/00Electric light sources using a combination of different types of light generation

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  • the invention relates to the field of color detection, and in particular to a color light box.
  • the publication No. 8592748 B2 discloses a colorimetric light box for simulating daylight spectrum based on different color temperature LED light sources. Although the LED light source has a rich spectrum, it has the disadvantages of low color rendering index and incomplete spectrum.
  • the figure 5.1 (shown in Figure 1) given in this patent can clearly see the overall effect of the simulation. Not very ideal, especially after the 630nm band difference is more obvious, and failed to achieve high quality analog daylight spectrum.
  • the patent publication CN 101883971 A discloses a color measuring device based on a fluorescent lamp and a plurality of light emitting diodes. The short life and color drift are obviously one of the disadvantages of the fluorescent lamp over time.
  • the invention utilizes an LED light source to compensate for the aging of the fluorescent lamp.
  • the spectral change of the time but because the luminescence spectrum of the fluorescent lamp is not adjustable, and there is a large gap with the standard light source, the compensated light source still cannot perform the color comparison well.
  • the present invention aims to provide an intelligent color light box using a combination of an LED light source and a tungsten filament lamp as a light source for illumination detection.
  • the light source control unit is used to adjust the light source intensity and the switch to better simulate the standard light source; at the same time, different types of standard light sources can be simulated according to different test requirements, which can be widely used. Suitable for a variety of color comparison occasions.
  • the LED-based intelligent color light box of the present invention is realized by the following technical solutions: an LED-based intelligent color light box, comprising: a box body, a light source group and a light source control unit, the The light source group includes an LED light source and a tungsten light lamp, and the light source control unit controls the light source group to emit light of a specified spectrum.
  • LED has been widely used in various lighting fields due to its advantages of high light efficiency, small color tolerance, energy saving and environmental protection.
  • the spectrum emitted by the LED light source still has many defects (as shown in Figure 2).
  • the LED spectrum is incomplete and unevenly distributed over the entire visible range.
  • the spectral response has been It is high, and its spectral response is too low in the band of less than 420 nm or 480 nm or more than 700 nm, that is, the blue spectrum of the LED spectrum is large, and the composition of red light and green light is low.
  • Tungsten filament lamps are often regarded as ideal reference sources with good color rendering and continuous dimming (as shown in Figure 2). Their spectral power distribution is much larger in the red range than in the blue-violet band. . Both of them can not simulate high-quality simulated sunlight when used as a light source for illumination alone, which affects the application and development of each of them in the field of color evaluation. By combining and utilizing the spectral power distribution characteristics of the two, the present invention can obtain a spectral power distribution that is more uniformly distributed in the visible light band.
  • the tungsten filament lamp herein may be an incandescent lamp or a tungsten halogen lamp;
  • the LED light source comprises at least one LED white light source and one or more monochromatic LEDs, and the monochromatic LED is used for the LED white light source and tungsten.
  • the combined light source of the filament light source is filled with light to better simulate various light sources for detecting illumination, and to improve the reliability and authenticity of colorimetry.
  • the invention combines the LED light source and the tungsten filament lamp to simultaneously emit light, and the light source control unit controls the illumination of each independent light source in the light source group, controls the intensity of the light source and the switch, and outputs the specified spectrum of light through the complementary light.
  • the light has a strong spectral power distribution in each wavelength band, thereby obtaining a light source with higher color rendering characteristics, further improving the reliability of visual assessment of the object color, and effectively overcoming the phenomenon of metamerism.
  • a color filter is included, and a color filter is disposed in front of the tungsten filament lamp in the light source group.
  • a light source group consisting of a cool white LED light source with a color temperature of 6500k and an incandescent lamp as an example
  • the spectral response of a cool white LED light source with a color temperature of 6500k in the range of 520nm-780nm is weak
  • the spectral response of the incandescent lamp in the corresponding range is as follows.
  • the combined light source can be complemented by adding a plurality of corresponding single-color LED light sources to further improve the color rendering characteristics and simulation effects of the combined light source.
  • the invention can be applied to simulate various types of standard light sources, such as D65, standard A light sources, etc., by using a combination of an LED light source, a tungsten filament lamp, and a color filter.
  • the light source control unit includes a plurality of independent program-controlled driving sub-units, and the plurality of independent program-controlled driving sub-units individually drive the opening, closing, and adjusting of the intensity of the respective light sources of the light source group.
  • the light source has different spectral distribution characteristics under different luminous intensities, and the spectral power distribution of the light source can be adjusted by changing the luminous intensity of the light source.
  • the light source group is controlled by a light source control unit, and the LED light source and tungsten in the light source group
  • the filaments emit light at the same time, mixing and emitting light of a specified spectrum.
  • the LED light source and the tungsten light source as the illumination source for the illumination alone have their respective shortcomings.
  • the invention combines the two in a smart way to obtain a better color rendering effect and better simulation results. Light source.
  • the LED light source and the tungsten filament lamp in the light source group are dispersedly arranged above the tank body, and the LED light source and the tungsten filament lamp in the light source group can be arranged in various forms: for example, the LED light source and the tungsten light
  • the filaments are arranged at intervals of two or two, or an equal number of tungsten lamps are arranged every several LED sources.
  • the light source control unit realizes switching and strength adjustment of the LED light source or the tungsten filament lamp in the light source group by adjusting the magnitude of the current or adjusting the pulse width or controlling the switch.
  • the output characteristics of the LED are closely related to its electrical parameters.
  • the PWM technology achieves by adjusting the pulse duty cycle.
  • the method of adjusting voltage and current indirectly changes the power distribution of the luminescence spectrum.
  • the light source control unit controls the switching and intensity adjustment of the light source in the light source by the above method, and then changes the spectral power distribution of the combined light source to achieve the purpose of emitting the specified spectrum.
  • the invention further includes an intelligent processor and a memory unit, wherein the memory unit stores the LED relative light source and the pulsed light source in the light source group, and the relative spectral power distribution data of the tungsten light lamp driven by different currents or pulse widths, and the intelligence
  • the processor controls the illumination of the LED light source and the tungsten filament lamp in the light source group through the light source control unit by calling the data in the memory unit according to the specified illumination spectrum distribution, analyzing and processing.
  • the intelligent processor compares the specified illuminating spectrum by calling the LED light source and the tungsten lamp in the light source group stored in the memory unit, and illuminating the relative spectral power distribution data under different current or pulse width, and parsing and selecting through the preset light source.
  • the program selects a spectrum similar to or consistent with the specified illuminating spectral distribution to correspond to the type of LED light source and the tungsten light lamp and the intensity of the illuminating light, and feeds the adjustment signal to the light source control unit, and the light source control unit controls the light source group according to the received signal.
  • the switch corresponding to the light source and the intensity of the light.
  • a diffuse transmission light homogenizing plate is disposed, the diffused transmission light homogenizing plate is disposed under the light source group, and the light emitted by the light source group is dimmed and mixed by the diffuse transmission homogenizing plate to be emitted.
  • a part of the light emitted by the light source group is directly transmitted to the sample to be tested through the diffuse transmission light-shading plate; the other part of the light is first reflected by the diffuse transmission light-shading plate, and then mixed and homogenized in the space formed by the diffuse transmission light-shading plate and the upper wall of the box body. After that, it is transmitted through the diffuse transmission homogenizing plate to the sample to be tested.
  • the upper part of the box is coated with a highly reflective coating, and the light emitted by the light source group is lighted and mixed by the high-reflection coating and the diffuse transmission homogenizing sheet. Since the upper part of the box is coated with a highly reflective layer, the light can be reflected at a higher reflectivity to the space formed by the diffuse transmission light-shading plate and the upper wall of the box after being incident on the box body, so that the light is mixed in the space. More uniform and then emerge.
  • the present invention adopts a combination of an LED light source and a tungsten lamp as a light source for detecting illumination, and uses a combination of spectral power distribution characteristics of the two to obtain a detection light source having better color rendering characteristics; and a color filter is disposed in front of the tungsten lamp. , the combination gets more Excellent spectral power distribution to further optimize the color rendering properties of the source.
  • the illuminating relative spectral power distribution data of LEDs or tungsten lamps pre-stored in the memory unit under different current or pulse width driving can more accurately and intelligently simulate various standard light sources, improve the reliability of color comparison and Authenticity.
  • 1 is an effect diagram of simulating a D50 light source using an LED light source
  • 2 is a spectral power distribution curve of different color temperature LED white light sources and standard A light sources
  • Figure 3 is a comparison diagram of the spectral power distribution curve after dimming in Embodiment 1 and the spectral power distribution curve of the D65 standard illumination source;
  • Figure 4 is a schematic view of Embodiment 2;
  • an LED-based intelligent color light box including a box body, a light source group and a light source control unit, and a color filter group including an LED light source 2-1 and a tungsten filament lamp 2-2, wherein the LED light source 2-1 includes a cool white LED light source with a color temperature of 6500k and a number of monochromatic LEDs (see Table 1 for details).
  • the tungsten filament lamp 2-2 used here is an incandescent lamp.
  • a color filter is placed in front of the incandescent lamp, and the color filter filters out the light source of the incandescent lamp in the range before the 520 nm band.
  • Each independent program-controlled driving sub-unit in the light source control unit separately adjusts the luminous intensity and the switch of the LED white light source, the plurality of single-color LEDs, and the incandescent lamps.
  • the dimming coefficient of the LED white light source is 0.6
  • the dimming coefficient of the incandescent light source is 0.6
  • the dimming coefficient of each monochromatic LED is shown in Table 1.
  • the dimming coefficient herein may be based on the maximum value of the spectral power distribution, or may be based on the integral value of the spectral power distribution of the entire visible light band, which is the former in the present embodiment.
  • Figure 3 is a comparison of the spectral power distribution curve after dimming with the spectral power distribution curve of the D65 standard illumination source.
  • Main wavelength Dimming coefficient Main wavelength Dimming coefficient 365nm 0.4 425nm 0.4 375nm 0.4 435nm 0.4 385nm 0.4 475nm 0.3 395nm 0.4 495nm 0.55
  • this embodiment discloses an arrangement manner of a light source group in an intelligent color light box based on LEDs.
  • the LED light source 2-1 and the tungsten filament lamp 2-2 are arranged at intervals of two or two; or every two LED light sources 2-1 are arranged with an equal number of tungsten light 2-2 light sources, so that the light source around the light box The distribution is more uniform.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种基于LED的智能对色灯箱,通过采用LED光源(2-1)以及钨丝灯(2-2)组合作为对色照明用光源,利用两者光谱功率分布特性组合获得显色特性更优的对色照明光源;还通过在钨丝灯(2-2)前设置滤色片,组合获得更优的光谱功率分布,进一步优化光源的显色特性。利用预先存储在记忆单元中的LED光源(2-1)或钨丝灯(2-2)在不同电流或者脉宽驱动下的发光相对光谱功率分布数据,可更为准确模拟各类标准照明光源,提高颜色比对的真实性和可靠性。

Description

一种基于LED的智能对色灯箱 【技术领域】
本发明涉及颜色检测领域,具体涉及一种对色灯箱。
【背景技术】
在现代工业中,对同类产品颜色的一致性和准确性有着越来越高的要求。随着科学技术的不断发展,对产品颜色的检验从最初依靠检验人员在普通光照下通过肉眼对被测样品和标准比色卡进行比对,以判别被测样品与标准比色卡之间的颜色偏差,逐渐发展到将被测样品和标准比色卡置于内置标准光源的颜色测定装置内进行检验,标准光源常用于模拟各种环境光线下的人造光源。不同物体的表面反射颜色是相匹配的,但他们所反射的光谱功率分布是相异的,这种现象被称作同色异谱(metamerism)。当光源光谱中很少或缺乏物体在基准光源下所反射的主波时,会使颜色产生明显的色差,而这会导致同色异谱的发生,从而导致生产工厂或实验室等非现场获得与在这些特定环境下的光源照明下物体颜色不一致的结果,影响纺织、印刷和涂料等工业中产品颜色检验的可靠性。采用标准灯箱在不同标准光源下对物体的颜色进行评定可以很有效的防止同色异谱的现象发生。
为了减小同色异谱现象对颜色评定可靠性带来的风险,公告号为US 8592748 B2的专利公开了一种基于不同色温LED光源用于模拟日光光谱的比色灯箱。LED光源虽具有丰富的光谱,但却有具显色指数低、光谱不完整等缺点,从该专利中给出的附图5.1(如图1所示)可以清晰的看出,模拟的整体效果并不十分理想,尤其在630nm之后波段的差异更为明显,并未能实现高质量的模拟日光光谱。公告号为CN 101883971 A的专利公开了一种基于荧光灯和多个发光二极管的颜色测定装置,寿命短、色漂移随时间明显是荧光灯的缺点之一,因此该发明利用LED光源来补偿荧光灯在老化时的光谱变化,但由于荧光灯的发光光谱不可调,且与标准光源有较大的差距,故而此种经补偿的光源仍不能很好的实施颜色比对。
【发明内容】
针对上述现有技术的不足,本发明旨在提供一种采用LED光源和钨丝灯组合作为照明检测用光源的智能对色灯箱。通过结合、利用两者的光谱功率分布特性,配合光源控制单元调节光源发光强弱及开关,以更好的模拟标准光源;同时还可根据测试需求的不同,模拟不同类型的标准光源,可广泛的适用于各种颜色比对场合。
本发明所述的一种基于LED的智能对色灯箱是通过以下技术方案实现的:一种基于LED的智能对色灯箱,其特征在于,包括箱体、光源组和光源控制单元,所述的光源组包括LED光源和钨丝灯,所述的光源控制单元控制光源组发出指定光谱的光线。
近些年来随着半导体技术的不断发展,LED凭借其高光效、小色容差、节能环保等优势广泛应用于各种照明领域。然而LED光源发出的光谱依然存在不少的缺陷(如图2所示),无论色温高低,LED光谱在整个可见光范围内不完全且分布不均匀,例如,在450nm或者600nm附近,其光谱响应过高,而在小于420nm或者480nm附近或者大于700nm的波段上其光谱响应过低,也即是LED光谱中蓝光成分多,红光和绿光的成分偏低。钨丝灯常被视为理想的基准光源,具有显色性好,可连续调光等特点(如图2所示),其光谱功率分布在红光范围内远大于蓝紫波段的光谱功率分布。两者单独作为检测照明用光源时均不能高质量的模拟日光,影响了两者各自在颜色评定领域的应用和发展。本发明通过结合、利用两者的光谱功率分布特性,可获得在可见光波段内较为均匀分布的光谱功率分布。
需要指出的是,这里的钨丝灯可以是白炽灯或者卤钨灯;所述的LED光源包括至少一个LED白光源以及一个或者以上的单色LED,单色LED用于对LED白光源与钨丝灯光源的组合光源进行补光,以便更好的模拟各种检测照明用光源,提高比色的可靠性和真实性。
本发明通过将LED光源与钨丝灯组合后同时发光,利用光源控制单元控制光源组中各个独立光源的发光,控制光源发光的强弱和开关,通过相互补光,混合后发出指定光谱的光线,该光线在各个波段内均具有较强的光谱功率分布,进而可获得具有较高显色特性的光源,进一步提高物体颜色目测评定的可靠性,有效克服同色异谱现象。
本发明还可通过以下技术方案进一步限定和完善:
作为一种技术方案,包括滤色片,在所述光源组中的钨丝灯前设置滤色片。以色温为6500k的冷白LED光源和白炽灯组成的光源组为例,色温为6500k的冷白LED光源在520nm-780nm的波段范围内的光谱响应较弱,白炽灯在相应范围内的光谱响应较强,通过在白炽灯前设置对应波段的滤色片,滤除白炽灯光源在520nm之前波段的光源,从而使得滤除后的组合光源在整个可见光波段范围内均具有较强的光谱响应;同时还可通过添加多个对应单色LED光源对组合光源进行补光,以达到进一步提高组合光源显色特性和模拟的效果。通过LED光源、钨丝灯以及滤色片的组合使用,本发明可适用于模拟各种类型的标准光源,如D65、标准A光源等。
作为一种技术方案,所述的光源控制单元包括多个独立的程控驱动子单元,所述多个独立的程控驱动子单元单独驱动光源组各个独立光源的开启、关闭以及发光强弱的调节。光源在不同的发光强度下具有不同的光谱分布特性,改变光源的发光强度即可实现对光源光谱功率分布的调整。
作为一种技术方案,所述的光源组在光源控制单元的控制下,光源组中的LED光源和钨 丝灯同时发光,混合发出指定光谱的光线。如前文所述,LED光源和钨丝灯光源作为检测照明用光源单独发光模拟标准光源均有其各自的缺点,本发明巧妙的将两者结合,可获得显色效果更佳、模拟结果更优的光源。
作为一种技术方案,所述的光源组中的LED光源和钨丝灯在箱体内上方分散设置,光源组中的LED光源和钨丝灯可以以多种形式排布:例如,LED光源与钨丝灯两两间隔、密布排列;或者每隔若干个LED光源排布相等数量的钨丝灯。
作为一种技术方案,所述的光源控制单元通过调节电流大小或者调节脉宽大小或者控制开关实现对光源组中的LED光源或者钨丝灯的开关及强弱调节。以LED光源为例,LED的输出特性与其电参数有着密切的联系,通过改变电参数即可实现对LED光源发光强弱的调节,进而改变发光光谱功率分布;PWM技术通过调整脉冲占空比达到调整电压、电流的方法,间接的改变发光光谱功率分布。光源控制单元通过上述方法控制光源中光源的开关及强弱调节,继而改变组合光源光谱功率分布,实现发出指定光谱的目的。
作为一种技术方案,还包括智能处理器和记忆单元,所述的记忆单元内存储有光源组中的LED光源和钨丝灯在不同电流或者脉宽驱动下的发光相对光谱功率分布数据,智能处理器通过调用记忆单元中的数据,比照指定发光光谱分布,解析、处理后经光源控制单元控制光源组中的LED光源和钨丝灯的发光。智能处理器通过调用记忆单元内存储的光源组中的LED光源和钨丝灯在不同电流或者脉宽驱动下的发光相对光谱功率分布数据,比对指定发光光谱,解析后通过预设的光源选择程序选择与指定发光光谱分布相近或一致的光谱对应所需的LED光源和钨丝灯的类型及发光强弱,并将调节信号反馈至光源控制单元,光源控制单元根据接收的信号控制光源组中对应光源的开关以及发光强弱。
作为优选,还包括漫透射匀光板,所述的漫透射匀光板设置在光源组的下方,所述光源组所发出的光线经过漫透射匀光板匀光和混光后出射。光源组发出的光线中一部分光线经漫透射匀光板直接透射到被测样品上;另一部分光线先经漫透射匀光板反射后在漫透射匀光板与箱体上壁组成的空间内混合、匀光后再经漫透射匀光板透射到被测样品上。
作为优选,箱体的上方涂有高反射涂层,所述光源组所发出的光线经高反射涂层和漫透射匀光板匀光和混光后出射。由于此时箱体上方涂有高反射层,光线在入射到箱体上方后能够以较高的反射率反射至漫透射匀光板与箱体上壁组成的空间内,以使该空间内混光更均匀后出射。
综上所述,本发明采用LED光源以及钨丝灯组合作为检测照明用光源,利用两者光谱功率分布特性组合获得显色特性更优的检测用光源;通过在钨丝灯前设置滤色片,组合获得更 优的光谱功率分布,进一步优化光源的显色特性。利用预先存储在记忆单元中的LED或钨丝灯在不同电流或者脉宽驱动下的发光相对光谱功率分布数据,可更为准确和智能的模拟各类标准光源,提高颜色比对的可靠性和真实性。
【附图说明】
附图1是利用LED光源模拟D50光源的效果图;
附图2是不同色温LED白光源和标准A光源的光谱功率分布曲线;
附图3是实施例1中经调光后的光谱功率分布曲线与D65标准照明光源的光谱功率分布曲线的比照图;
附图4是实施例2的示意图;
2-1-LED光源;2-2-钨丝灯。
【具体实施方式】
实施例1
本实施例中公开了一种基于LED的智能对色灯箱,包括箱体、光源组和光源控制单元以及滤色片,光源组包括LED光源2-1和钨丝灯2-2,其中LED光源2-1中包括一个色温为6500k的冷白LED光源和若干个单色LED(具体见表1),这里所用的钨丝灯2-2为白炽灯。在白炽灯前设置滤色片,滤色片滤除白炽灯在520nm之前波段范围的光源。光源控制单元中各个独立的程控驱动子单元,分别、单独调节LED白光源、若干个单色LED以及白炽灯的发光强弱及开关。
本实施例中LED白光源的调光系数为0.6,白炽灯光源的调光系数为0.6,具体各个单色LED的调光系数情况见表1。这里的调光系数可以是以光谱功率分布的最大值作为基准,还可以是以整个可见光波段光谱功率分布的积分值作为基准,本实施例采用的是前者。图3为经调光后的光谱功率分布曲线与D65标准照明光源的光谱功率分布曲线的比照图。
表1本实施例所用单色LED光源及其各自的调光系数
主波长 调光系数 主波长 调光系数
365nm 0.4 425nm 0.4
375nm 0.4 435nm 0.4
385nm 0.4 475nm 0.3
395nm 0.4 495nm 0.55
405nm 0.4 515nm 0.3
415nm 0.4    
实施例2
如图4所示,本实施例公开了一种基于LED的智能对色灯箱中光源组的排布方式。其中LED光源2-1与钨丝灯2-2两两间隔、密布排列;或者每隔2个LED光源2-1排布相等数量的钨丝灯2-2光源,以使得灯箱各处的光源分布更为均匀。
需要强调的是,以上仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。

Claims (9)

  1. 一种基于LED的智能对色灯箱,其特征在于,包括箱体、光源组和光源控制单元,所述的光源组包括LED光源(2-1)和钨丝灯(2-2),所述的光源控制单元控制光源组发出指定光谱的光线。
  2. 如权利要求1所述的一种基于LED的智能对色灯箱,其特征在于,包括滤色片,在所述光源组中的钨丝灯(2-2)前设置滤色片。
  3. 如权利要求1所述的一种基于LED的智能对色灯箱,其特征在于,所述的光源控制单元包括多个独立的程控驱动子单元,所述多个独立的程控驱动子单元单独驱动光源组各个独立光源的开启、关闭以及发光强弱的调节。
  4. 如权利要求1或3所述的一种基于LED的智能对色灯箱,其特征在于,所述的光源组在光源控制单元的控制下,光源组中的LED光源(2-1)和钨丝灯(2-2)同时发光,混合发出指定光谱的光线。
  5. 如权利要求1所述的一种基于LED的智能对色灯箱,其特征在于,所述的光源组中的LED光源(2-1)和钨丝灯(2-2)在箱体内上方分散设置。
  6. 如权利要求1或3所述的一种基于LED的智能对色灯箱,其特征在于,所述的光源控制单元通过调节电流大小或者调节脉宽大小或者控制开关实现对光源组中的LED光源(2-1)或者钨丝灯(2-2)的开关及强弱调节。
  7. 如权利要求1或3所述的一种基于LED的智能对色灯箱,其特征在于,还包括智能处理器和记忆单元,所述的记忆单元内存储有光源组中的LED光源(2-1)和钨丝灯(2-2)在不同电流或者脉宽驱动下的发光相对光谱功率分布数据,智能处理器通过调用记忆单元中的数据,比照指定发光光谱分布,解析、处理后经光源控制单元控制光源组中的LED光源(2-1)和钨丝灯(2-2)的发光。
  8. 如权利要求1所述的一种基于LED的智能对色灯箱,其特征在于,包括漫透射匀光板,所述的漫透射匀光板设置在光源组的下方,所述光源组所发出的光线经过漫透射匀光板匀光和混光后出射。
  9. 如权利要求8所述的一种基于LED的智能对色灯箱,其特征在于,箱体的上方涂有高反射涂层,所述光源组所发出的光线经高反射涂层和漫透射匀光板匀光和混光后出射。
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