WO2015176594A1 - 滤光片及利用此滤光片的cmy混色组件及其光学系统 - Google Patents

滤光片及利用此滤光片的cmy混色组件及其光学系统 Download PDF

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Publication number
WO2015176594A1
WO2015176594A1 PCT/CN2015/077640 CN2015077640W WO2015176594A1 WO 2015176594 A1 WO2015176594 A1 WO 2015176594A1 CN 2015077640 W CN2015077640 W CN 2015077640W WO 2015176594 A1 WO2015176594 A1 WO 2015176594A1
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Prior art keywords
filter
color
color mixing
thickness
region
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PCT/CN2015/077640
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English (en)
French (fr)
Inventor
蒋伟楷
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Guangzhou Haoyang Electronic Co Ltd
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Guangzhou Haoyang Electronic Co Ltd
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Priority to DK15796738.1T priority Critical patent/DK3147695T3/da
Priority to US15/303,476 priority patent/US10174911B2/en
Priority to EP15796738.1A priority patent/EP3147695B1/en
Publication of WO2015176594A1 publication Critical patent/WO2015176594A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/007—Lighting devices or systems producing a varying lighting effect using rotating transparent or colored disks, e.g. gobo wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/106—Beam splitting or combining systems for splitting or combining a plurality of identical beams or images, e.g. image replication

Definitions

  • the invention relates to the field of stage lighting technology, in particular to a filter and a CMY color mixing component using the same and an optical system thereof.
  • stage lighting equipment such as lighting fixtures
  • technical means to display the environment with light color and its changes, to render the atmosphere, to highlight the central figures, to create a sense of stage space, time, and to create a stage performance.
  • External image and provide the necessary lighting effects, in order to shape the color rendering effect, generally using the dye light to achieve.
  • CMY Color mixing the current CMY color mixing dye color conversion can not produce a uniform gradient effect, when converting from one color to another color, the color over-extension is abrupt, and the color of the pattern is not uniform enough.
  • the technical problem to be solved by the present invention is to provide a filter with more uniform color conversion and CMY using the filter. Color mixing components and their optical systems.
  • the technical solution adopted by the present invention is: a filter comprising a substrate and a filter film plated on the substrate, wherein, the filter film comprises a uniform region and a mixed color region, the thickness of the filter film on the uniform region is uniform, the thickness of the filter film on the mixed color region is not uniform, and the thickness of the filter film on the uniform region is greater than or equal to the filter film on the mixed color region.
  • the thickness of the filter film in the central region of the color mixing region is larger than the thickness of the filter film in the two-wing region, and the color mixing region is disposed on the side of the filter that first accesses the optical path.
  • the filter film is designed as a uniform region and a mixed color region, and the light beam first enters the color mixing region. Since the thickness of the color filter region is partially or completely smaller than the thickness of the uniform region, the beam can be changed when the beam is discolored. To be gentle, when the beam emitted from the color mixing area is mixed with other light, the gradient of discoloration is moderated. From the naked eye, the color change is uniform, and the beam entering the filter gradually becomes. As the color changes, the color gradually changes until it reaches the uniform area from the color mixing area. At this time, the color has gradually become deeper to finally complete the color mixing.
  • the filter film on the color mixing region exhibits a semi-arc comb-like pattern with a middle portion A
  • the thickness is large, and the thickness of the side B is small.
  • the color mixing area sequentially sets the first pattern area C and the second pattern area D along the direction of successively accessing the optical path.
  • a third pattern area E and an intermediate pattern area F disposed at an intermediate portion of the color mixing area, the first pattern area C adopts a curved comb-tooth pattern, and the third pattern area E A curved atomizing film is used, and the second pattern area D is disposed between the first pattern area C and the third pattern area E; wherein the coating thickness of the first pattern area C is smaller than the second pattern area D The coating thickness is large; the intermediate pattern area F is composed of a first portion of the filter film having the same thickness as the uniform region and a comb-tooth pattern disposed on the side close to the optical path.
  • the invention also provides a CMY
  • the color mixing component includes a cyan filter, a magenta filter, and a yellow filter, and each of the filters is the above filter.
  • each filter is designed to include a mixed color region and a uniform region, so that when a single filter or two or two filters or three filters are mixed, the color conversion becomes more uniform.
  • the present invention also provides an optical system with the CMY color mixing component, including a light source device sequentially disposed along an optical path, the CMY a color mixing component and an effect component, each of the filters in the CMY color mixing component is sequentially arranged from top to bottom, CMY
  • the color mixing component further includes a color mixing driving mechanism corresponding to each of the filters, and each of the filters is respectively connected to a corresponding color mixing driving mechanism; the light source device emits light, CMY
  • the color mixing component controls the corresponding filter to be connected to the optical path according to the color requirement of the light output, and the light beam forms a corresponding color and then enters the effect component and exits.
  • the light source device is an LED module light source; the LED module light source includes LEDs arranged in sequence along the optical path An array, a lens array, an optical integrator, and a focusing lens, wherein the LED array is packaged on a heat dissipating substrate, and each lens on the lens array and each LED on the LED array One-to-one correspondence, the lens array is used to aggregate the light emitted by the LEDs on the LED array into a bundle of light, and the optical integration component performs preliminary uniform processing on the beam.
  • the optical integrator element is a microlens array;
  • the LED array is a white LED array.
  • the invention passes The filter is designed to include a color mixing area and a uniform area, so that when the color filter is mixed, the color conversion becomes more uniform.
  • the present invention uses a CMY color mixing component in combination with an LED
  • the structure of the light source device can greatly improve color efficiency and brightness compared to the conventional structure.
  • Figure 1 is a schematic view showing the first structure of the filter of the present invention
  • FIG. 2 is a schematic view showing a second structure of the filter of the present invention.
  • Figure 3 is a schematic structural view of an optical system of the present invention.
  • Fig. 4 is a schematic view showing the structure of a light source device of the present invention.
  • a filter includes a substrate and a filter film plated on the substrate.
  • the filter film comprises a uniform region and a mixed color region, the thickness of the filter film on the uniform region is uniform, the thickness of the filter film on the mixed color region is not uniform, and the thickness of the filter film on the uniform region is greater than or equal to the filter film on the mixed color region.
  • the thickness of the filter film in the central region of the color mixing region is larger than the thickness of the filter film in the two-wing region, and the color mixing region is disposed on the side of the filter that first accesses the optical path.
  • the coating thickness of the filter film on the uniform region is uniform, so that the color of the light beam passing through the region is projected to be the same depth of color; the coating thickness of the filter film on the mixed color region is not uniform to form different colors.
  • the pattern (pattern) is such that the color of the light beam passing through the area is projected to a different shade of color. and Since the thickness of the color filter region is partially or completely smaller than the thickness of the uniform region, the beam can be changed more gently when the beam is discolored, and the color beam emitted from the color mixing region is mixed with other rays to alleviate the discoloration. Gradient, from the human eye, the color change is a uniform change.
  • Figure 1 Shown as a first structural schematic view of the filter of the present invention, the filter film on the color mixing region exhibits a semi-arc comb-like pattern, the middle portion A has a large thickness, and the two regions B have a thicker thickness. small.
  • FIG. 2 a second schematic structural view of a filter according to the present invention, wherein the color mixing region sequentially sets a first pattern region along a direction in which the optical paths are sequentially connected.
  • the intermediate pattern area F is composed of a first portion of the filter film having the same thickness as the uniform region and a comb-tooth pattern disposed on the side close to the optical path.
  • the specific processing method is as follows: firstly, a certain thickness of the filter film layer is plated on the filter according to the wavelength band, and then the desired pattern shape is drawn in a certain area according to the need, and then the laser along the edge
  • the outline of the pattern shape is subjected to dot processing so that the film thickness of each point on the different contours is laser-engraved to different thicknesses as needed to form a mixed color region of uneven coating thickness, so that a progressive color mixing region of the color is formed;
  • the film layer outside the color mixing area retains the original thickness as a uniform area.
  • the invention also provides a CMY
  • the color mixing component includes a cyan filter, a magenta filter, and a yellow filter, and each of the filters is the above filter.
  • the present invention also provides an optical system with the CMY color mixing component, including a light source device sequentially disposed along the optical path.
  • the CMY color mixing component 2 and the effect component 3 each of the filters in the CMY color mixing component 2 are sequentially arranged from top to bottom, and the CMY color mixing component 2
  • a color mixing driving mechanism corresponding to each of the filters is further included, and each of the filters is respectively connected to a corresponding color mixing driving mechanism;
  • the light source device 1 emits light, and the CMY color mixing component 2
  • the corresponding filter is controlled to be connected to the optical path, and the light beam forms a corresponding color and enters the effect component 3 to be emitted.
  • CMY color mixing component 2 also includes a fixed chassis 21 Each filter is respectively connected to a corresponding color mixing driving mechanism, and the color mixing driving mechanism is connected to the fixed chassis 21; each color mixing driving mechanism includes a driving transmission mechanism corresponding to a filter, a slider 22 and a guiding rod twenty three The driving mechanism is coupled to the slider 22, and the slider 22 is slidably sleeved on the guiding rod 23, and the respective filters are respectively connected to the corresponding slider 22.
  • the drive transmission mechanism includes a drive motor 24, a drive wheel 25, and a drive belt 26
  • the driven wheel 27 and the driving wheel 25 are coupled with the output shaft of the driving motor 24, and the driven wheel 27 is connected with the fixed component, specifically, the driven wheel 27
  • the bearing can be coupled to the output shaft of the other drive motor; one end of the drive belt 26 is connected to one end of the slider 22, and the other end of the drive belt 26 is bypassed to the outside of the drive wheel 25 and the driven wheel 27, and extends to the slider.
  • the other end of 22 is connected to the other end of the slider 22.
  • the driving transmission mechanism is a screw motor, and the screw motor is connected with the slider.
  • the linear motion of the screw motor can drive the filter to move into or out of the optical path to achieve color mixing.
  • the light source device is an LED module light source; and the LED module light source includes sequentially arranged along the optical path.
  • the LEDs on the array are arranged one by one, and the lens array is used to LEDs on the LED array
  • the emitted light is aggregated into a bundle of light, and the optical integrator element performs a preliminary uniform processing of the beam.
  • the optical integration element is a microlens array; the LED array is a white LED array.
  • the definition of the uniform area of the coating thickness and the position of the color mixing area with uneven coating thickness needs to be determined according to various factors such as the size of the light exit opening, the light source exit angle, the size of the filter, the mixed color gradient stroke requirement and the mechanical structure interference. decided.
  • the size of the light exit of the incident light source determines the position of the filter when it is fully opened, and the filter needs to be in an unobstructed state. At the same time, when the filter is completely closed, the light emitted by the light source cannot pass through the filter directly. Subsequent optical components, and in the middle portion of the two sheets when the filter is fully closed, it is necessary to reserve a uniform area. The non-uniform regions of the two sheets have no overlapping portions to achieve a full-color effect. The larger the size of the light exit port, the larger the filter size when the final color effect is finally achieved, the wider the color mixing gradient stroke requirement, and the larger the size of the filter. At the same time, the size limit of the entire optical system tends to limit the size of the filter, resulting in infinitely large gradient travel.
  • the layout design of the coating thickness can be designed according to actual needs, specifically: the type of light source selected according to the luminaire, the light distribution after passing through the light source, the band characteristics of the filter, the filter and the light source.
  • the distance, of course, the color mixing uniformity of the filter and the white light hole in the effect component ( GOBO) also has a close relationship with the white hole in the effect component (GOBO)
  • the location should be selected from the most concentrated light energy and uniformity of light distribution.
  • the types of light sources are different, the distribution of light sources is different, and the design of the collected light paths is different.
  • the light distribution after the light passes through the condenser is very different.
  • the design of the collecting light path does not need to consider the aberration, and the light passes through the lens.
  • the uniformity of the light distribution at different positions of the optical axis at different positions and at the same point of the optical axis and the plane of the optical axis is different; the filter can be selected in the visible band, but the color subtraction principle is adopted, that is, the general white light can be considered It is a mixture of red, green and blue colors.
  • the color reduction is based on the coating design of each specification. RGB Reflected back to one of the two colors, through the other two colors, the commonly used filters pass through the light source are: magenta, cyan, yellow.
  • the arrangement of the three-layer filter is confirmed.
  • the most sensitive color of the human eye is closer to the position of the light source, and so on. Meanwhile, it can be inferred from the above that the magenta is blue.
  • the red color is added, but the red and blue bands are different in position, and the color after passing through the magenta filter is slightly different, which affects the pattern design on the filter; usually When the concentrating lens or mirror is designed, the convergence point will not be a certain position due to the aberration, but a range in which the light energy is concentrated, but the uniformity may be Poor, of course, there is also a position where the spot is the most uniform, the light energy may be slightly lower, and the white hole of the effect component in the filter color mixture ( The uniformity of the position of the GOBO) also affects the uniform effect of the spot light from the entire lamp.
  • the effect component includes one or more of a pattern disk assembly, a color wheel disk, a prism assembly, and the like.
  • the optical system of the present invention further includes an optical component including a focusing component 41, a lens 42 and the like which are sequentially disposed along the optical path.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

一种滤光片及利用此滤光片的CMY混色组件及其光学系统。滤光片包括基片及镀设于基片上的滤光膜。滤光膜包括均匀区域及混色区域，均匀区域上的滤光膜厚度均匀，混色区域上的滤光膜厚度不均匀。均匀区域上滤光膜的厚度大于或等于混色区域上滤光膜的厚度，混色区域中心区域的滤光膜的厚度比两翼区域的滤光膜的厚度大。混色区域设置在滤光片上首先接入光路的一侧。

Description

滤光片及利用此滤光片的CMY混色组件及其光学系统 标题
技术领域
本发明涉及舞台灯光技术领域，尤其涉及一种滤光片及利用此滤光片的 CMY 混色组件及其光学系统。
背景技术
在舞台灯光领域中，通常需要运用舞台灯光设备（如照明灯具等）和技术手段，以光色及其变化显示环境、渲染气氛、突出中心人物，创造舞台空间感、时间感，塑造舞台演出的外部形象，并提供必要的灯光效果，为了塑造色彩渲染效果，一般使用染色灯来实现。
目前，染色灯一般使用 RGB 原理进行混色，或利用 CMY 混色系统混合处理而成。然而，利用 CMY 混色，目前的 CMY 混色的染色灯的颜色转换均不能产生均匀渐变效果，当由一种颜色转换至另一种颜色时，色彩的过度是突变的，而且图案的色彩也不够均匀。
发明内容
本发明所要解决的技术问题是，提供一种颜色变换更为均匀的滤光片及利用此滤光片的 CMY 混色组件及其光学系统。
为解决上述技术问题，本发明采用的技术方案是： 一种滤光片，包括基片及镀设于基片上的滤光膜， 其中，滤光膜包括均匀区域及混色区域，均匀区域上的滤光膜厚度均匀，混色区域上的滤光膜厚度不均匀，均匀区域上滤光膜的厚度大于或等于混色区域上滤光膜的厚度，混色区域中心区域的滤光膜的厚度比两翼区域的滤光膜的厚度大，所述混色区域设置在滤光片上首先接入光路的一侧。
本方案中，将滤光膜设计为均匀区域及混色区域，光束首先进入混色区域，由于混色区域滤光膜的厚度部分或全部比均匀区域的厚度小，故能使光束变色时，其变换更为平缓，而从混色区域射出的光束与其他光线混合时，更是缓和了变色的梯度，从人的肉眼来看，其色彩的变换是呈现均匀的变化，随着进入滤光片的光束逐渐变多，颜色也逐渐变化，直至由混色区域跨度到均匀区域，此时颜色已逐渐变深至最终完成混色。
作为本发明的第一种改进方案，所述混色区域上的滤光膜呈现为半弧形梳齿状图样，其中间部位区域 A 厚度较大，两侧区域 B 厚度较小。
作为本发明的第二种改进方案，所述混色区域沿先后接入光路的方向上依次设置第一图样区域 C 、第二图样区域 D 、第三图样区域 E 以及设置在混色区域中间部位的中间图样区域 F ，第一图样区域 C 采用的是弧形梳齿状图样，第三图样区域 E 采用的是弧形雾化膜，第二图样区域 D 设置在第一图样区域 C 与第三图样区域 E 之间；其中，第一图样区域 C 的镀膜厚度比第二图样区域 D 的镀膜厚度大；中间图样区域 F 由与均匀区域相同厚度滤光膜的第一部分以及设置在接近光路一侧的梳齿状图样构成。
本发明还提供一种 CMY 混色组件，包括青色滤光片、品红色滤光片和黄色滤光片，所述各滤光片为上述的滤光片。
本方案中，将各个滤光片设计为包括混色区域与均匀区域，使得单个滤光片或两两滤光片或三个滤光片进行混色时，颜色的变换变得更为均匀。
另外，本发明还一种带有所述 CMY 混色组件的光学系统，包括沿光路依次设置的光源装置、所述 CMY 混色组件及效果组件，所述 CMY 混色组件中的各滤光片依次由上而下按层次错开设置， CMY 混色组件还包括与各滤光片相对应的混色驱动机构，各滤光片分别与对应的混色驱动机构连接；光源装置发出光线， CMY 混色组件根据出光颜色要求，控制对应滤光片接入光路，光束形成对应颜色后进入效果组件后出射。
所述光源装置为 LED 模组光源；所述 LED 模组光源包括沿光路依次设置的 LED 阵列、透镜阵列、光学积分元件和聚焦透镜，其中， LED 阵列封装在散热基板上，透镜阵列上的各透镜分别与 LED 阵列上的各 LED 一一对应设置，所述透镜阵列用于将 LED 阵列上各 LED 发出的光汇聚合成一束合光，光学积分元件对光束进行初步均匀处理。所述光学积分元件为微透镜阵列；所述 LED 阵列为白光 LED 阵列。
与现有技术相比，本发明的有益效果是：
本发明通过 将滤光片设计为包括混色区域与均匀区域，使得滤光片进行混色时，颜色的变换变得更为均匀。另外，本发明采用 CMY 混色组件结合 LED 光源装置的结构，相对传统结构，可大大提高颜色效率及亮度。
附图说明
图 1 是本发明滤光片的第一种结构示意图；
图 2 是本发明滤光片的第二种结构示意图；
图 3 是本发明光学系统的结构示意图；
图 4 是本发明光源装置的结构示意图。
具体实施方式
下面结合具体实施例对本发明作进一步的说明。
如图 1 及图 2 所示，一种滤光片，包括基片及镀设于基片上的滤光膜， 其中，滤光膜包括均匀区域及混色区域，均匀区域上的滤光膜厚度均匀，混色区域上的滤光膜厚度不均匀，均匀区域上滤光膜的厚度大于或等于混色区域上滤光膜的厚度，混色区域中心区域的滤光膜的厚度比两翼区域的滤光膜的厚度大，所述混色区域设置在滤光片上首先接入光路的一侧。
其中，均匀区域上滤光膜的镀膜厚度均匀，以使得经过该区域的光束的颜色投射出去后呈现为相同深度的颜色；所述混色区域上滤光膜的镀膜厚度不均匀，以形成不同的图样（图案），使得经过该区域的光束的颜色投射出去后呈现为深浅程度不同的颜色。而 由于混色区域滤光膜的厚度部分或全部比均匀区域的厚度小，故能使光束变色时，其变换更为平缓，而从混色区域射出的光束与其他光线混合时，更是缓和了变色的梯度，从人的肉眼来看，其色彩的变换是呈现均匀的变化。
如图 1 所示，为本发明滤光片的第一种结构示意图，所述混色区域上的滤光膜呈现为半弧形梳齿状图样，其中间部位区域 A 厚度较大，两侧区域 B 厚度较小。
如图 2 所示，为本发明滤光片的第二种结构示意图，所述混色区域沿先后接入光路的方向上依次设置第一图样区域 C 、第二图样区域 D 、第三图样区域 E 以及设置在混色区域中间部位的中间图样区域 F ，第一图样区域 C 采用的是弧形梳齿状图样，第三图样区域 E 采用的是弧形雾化膜，第二图样区域 D 设置在第一图样区域 C 与第三图样区域 E 之间；其中，第一图样区域 C 的镀膜厚度比第二图样区域 D 的镀膜厚度大；中间图样区域 F 由与均匀区域相同厚度滤光膜的第一部分以及设置在接近光路一侧的梳齿状图样构成。
对于各滤光片具体加工方式为：先在滤光片上根据波段的不同镀上一定厚度的滤光膜膜层，再根据需要在一定区域范围内画出需要的图样形状，然后通过激光沿着图样形状的轮廓进行打点处理，以使得不同轮廓上的各点的膜层厚度根据需要利用激光雕刻出不同的厚度，以形成镀膜厚度不均匀的混色区域，使得形成颜色的渐进混色区域；而混色区域外的膜层则保留原有的厚度，作为均匀区域。
本发明还提供一种 CMY 混色组件，包括青色滤光片、品红色滤光片和黄色滤光片，所述各滤光片为上述的滤光片。
另外，如图 3 所示，本发明还一种带有所述 CMY 混色组件的光学系统，包括沿光路依次设置的光源装置 1 、所述 CMY 混色组件 2 及效果组件 3 ，所述 CMY 混色组件 2 中的各滤光片依次由上而下按层次错开设置， CMY 混色组件 2 还包括与各滤光片相对应的混色驱动机构，各滤光片分别与对应的混色驱动机构连接；光源装置 1 发出光线， CMY 混色组件 2 根据出光颜色要求，控制对应滤光片接入光路，光束形成对应颜色后进入效果组件 3 后出射。
CMY 混色组件 2 还包括固定底架 21 ，各滤光片分别与对应的混色驱动机构连接，混色驱动机构连接在固定底架 21 上；每个混色驱动机构均包括与一滤光片相对应的驱动传动机构、滑块 22 和导杆 23 ，所述驱动传动机构与滑块 22 连接，滑块 22 可滑动地套设在导杆 23 上，所述各滤光片分别与对应的滑块 22 连接。
作为第一种优选方案，如图 3 所示，所述驱动传动机构包括驱动电机 24 、主动轮 25 、传动带 26 、从动轮 27 ，主动轮 25 与驱动电机 24 的输出轴配合连接，从动轮 27 与固定组件连接，具体地，从动轮 27 可以通过轴承与另一驱动电机的输出轴配合连接；传动带 26 的一端与滑块 22 的一端连接，其另一端分别绕过主动轮 25 、从动轮 27 的外侧，延伸至滑块 22 的另一端，进而与滑块 22 的另一端连接。
作为第二种优选方案，所述驱动传动机构为丝杆电机，丝杆电机与滑块连接，通过丝杆电机的直线运动，可带动滤光片移入或移出光路，以实现其混色作用。
进一步的， 如图 4 所示， 所述光源装置为 LED 模组光源；所述 LED 模组光源包括沿光路依次设置的 LED 阵列 11 、透镜阵列 12 、光学积分元件 13 和聚焦透镜 14 ，其中， LED 阵列封装在散热基板上，透镜阵列上的各透镜分别与 LED 阵列上的各 LED 一一对应设置，所述透镜阵列用于将 LED 阵列上各 LED 发出的光汇聚合成一束合光，光学积分元件对光束进行初步均匀处理。所述光学积分元件为微透镜阵列；所述 LED 阵列为白光 LED 阵列。
对于镀膜厚度均匀的均匀区域与镀膜厚度不均匀的混色区域的位置的界定需要根据光源出光口的尺寸、光源出光角度、滤光片的尺寸、混色渐变行程要求及机械结构干涉等多个因素来决定的。
入射光源出光口的尺寸即决定了滤光片在完全打开时的位置，滤光片需处于不遮挡状态；同时在滤光片完全闭合时不能有由光源出射的光未通过滤光片直接进入其后的光学组件，且在滤光片在完全闭合时两片的中间部分需要预留均匀区域两片的非均匀区域没有重叠部分以实现全色效果。出光口的尺寸越大需要最终实现全色效果时的滤光片尺寸越大，混色渐变行程要求越宽，滤光片的尺寸也越大。同时对整个光学系统的外型尺寸限制往往会限制滤光片的尺寸大小，造成无法无限度实现大的渐变行程。
对于混色区域，其镀膜厚度的布局设计（图样设计）可根据实际需要设计，具体为：根据灯具选取的光源类型、经过光源后的光分布情况、滤光片的波段特性、滤光片与光源的距离，当然滤光片的混色均匀度与效果组件中的白光孔（ GOBO ）的位置也有密切的关系，效果组件中的白光孔（ GOBO ）位置的选取应是光能量最集中，光分布均匀度。光源类型不同，光源分布不同，其所需要的聚光光路的设计是不一样的，导致光线经过聚光镜后的光分布有很大区别；同时聚光光路设计不需要考虑像差，光线在经过镜头后沿光轴不同位置以及光轴同一点与光轴垂直平面光斑不同点的光分布的均匀性也有差异；滤光片可在可见波段内选取，但采用颜色相减原理，即普遍白光可以认为是红色、绿色、蓝色三种颜色混合而成，颜色相减既是在每种规格采用镀膜设计使 RGB 反射回其中一种颜色，透过其他两种颜色，故一般通常采用的滤光片通过光源透过的颜色分别为：品红、青色、黄色。因此根据人眼对以上三色的敏感程度确认三层滤光片的排布，通常人眼最敏感的颜色越靠近光源的位置，依次类推；同时虽然可以由以上可以推知品红是由蓝色和红色相加而得到的，但红色与蓝色的波段位置选取的不同，其透过品红滤光片后的颜色也是略有差异的，其会影响滤光片上的图案样式设计；通常在进行聚光透镜或反射镜设计时由于像差的存在，其汇聚点都不会是一个确定的位置的，而是一个范围，在这个范围内有光能量最集中的点，但可能均匀度较差，当然也有一个位置是光斑最均匀的位置，光能量可能就会略低，滤光片混色中效果组件的白光孔（ GOBO ）位置的均匀度也会影响整灯出来的光斑均匀效果。
所述效果组件包括图案盘组件、色片盘、棱镜组件等中的一个或多个。
本发明的光学系统还包括光学组件，所述光学组件包括沿光路依次设置的调焦组件 41 、镜头 42 等。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (8)

  1. 一种滤光片，包括基片及镀设于基片上的滤光膜， 其特征在于，滤光膜包括均匀区域及混色区域，均匀区域上的滤光膜厚度均匀，混色区域上的滤光膜厚度不均匀，均匀区域上滤光膜的厚度大于或等于混色区域上滤光膜的厚度，混色区域中心区域的滤光膜的厚度比两翼区域的滤光膜的厚度大，所述混色区域设置在滤光片上首先接入光路的一侧。
  2. 根据权利要求 1 所述的滤光片，其特征在于，所述混色区域上的滤光膜呈现为半弧形梳齿状图样，其中间部位区域 A 厚度较大，两侧区域 B 厚度较小。
  3. 根据权利要求 1 所述的滤光片，其特征在于，所述混色区域沿先后接入光路的方向上依次设置第一图样区域 C 、第二图样区域 D 、第三图样区域 E 以及设置在混色区域中间部位的中间图样区域 F ，第一图样区域 C 采用的是弧形梳齿状图样，第三图样区域 E 采用的是弧形雾化膜，第二图样区域 D 设置在第一图样区域 C 与第三图样区域 E 之间；其中，第一图样区域 C 的镀膜厚度比第二图样区域 D 的镀膜厚度大；中间图样区域 F 由与均匀区域相同厚度滤光膜的第一部分以及设置在接近光路一侧的梳齿状图样构成。
  4. 一种 CMY 混色组件，包括青色滤光片、品红色滤光片和黄色滤光片，所述各滤光片为权利要求 1 至 3 所述的滤光片。
  5. 一种带有权利要求 4 所述 CMY 混色组件的光学系统，包括沿光路依次设置的光源装置、所述 CMY 混色组件及效果组件，所述 CMY 混色组件中的各滤光片依次由上而下按层次错开设置， CMY 混色组件还包括与各滤光片相对应的混色驱动机构，各滤光片分别与对应的混色驱动机构连接；光源装置发出光线， CMY 混色组件根据出光颜色要求，控制对应滤光片接入光路，光束形成对应颜色后进入效果组件后出射。
  6. 根据权利要求 5 所述的光学系统， 其特征在于，所述光源装置为 LED 模组光源。
  7. 根据权利要求 6 所述的光学系统， 其特征在于，所述 LED 模组光源包括沿光路依次设置的 LED 阵列、透镜阵列、光学积分元件和聚焦透镜，其中， LED 阵列封装在散热基板上，透镜阵列上的各透镜分别与 LED 阵列上的各 LED 一一对应设置，所述透镜阵列用于将 LED 阵列上各 LED 发出的光汇聚合成一束合光，光学积分元件对光束进行初步均匀处理。
  8. 根据权利要求 7 所述的光学系统， 其特征在于，所述光学积分元件为微透镜阵列；所述 LED 阵列为白光 LED 阵列。
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