WO2021093562A1 - 舞台灯照明装置 - Google Patents

舞台灯照明装置 Download PDF

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Publication number
WO2021093562A1
WO2021093562A1 PCT/CN2020/123801 CN2020123801W WO2021093562A1 WO 2021093562 A1 WO2021093562 A1 WO 2021093562A1 CN 2020123801 W CN2020123801 W CN 2020123801W WO 2021093562 A1 WO2021093562 A1 WO 2021093562A1
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Prior art keywords
light
lens
aperture
cob
stage
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PCT/CN2020/123801
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English (en)
French (fr)
Inventor
张宇飞
张权
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深圳市绎立锐光科技开发有限公司
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Publication of WO2021093562A1 publication Critical patent/WO2021093562A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • 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
    • F21V5/04—Refractors for light sources of lens shape

Definitions

  • the utility model relates to the field of stage lighting, in particular to a stage lamp lighting device.
  • stage performances are becoming more and more popular with people; stage lighting has also entered people's vision and has become an indispensable modeling method in stage performances.
  • stage lighting devices using LED chip modules and stage lighting devices using traditional light sources.
  • stage lighting device adopting the LED chip module has good light emitting effect and strong flexibility; the stage lighting device adopting the traditional light source has a simple structure.
  • stage lighting devices using LED chip modules are complicated in internal structure and require high assembly accuracy, resulting in inconvenience in production and processing; and stage lighting devices using LED chip modules on the market are expensive, which is not conducive to popularization and promotion.
  • the stage lighting device using the traditional light source has a large volume, a large light-emitting surface, and is not easy for secondary optical design; high energy consumption is not conducive to energy saving and environmental protection.
  • the technical problem to be solved by the utility model is to provide a stage light illuminating device with a small luminous area, convenient secondary optical design, simple structure, and convenient production and processing.
  • a stage light lighting device of the present invention includes a COB light source, an optical element and an aperture;
  • the COB light source includes a COB substrate and a plurality of LED chips mounted on the COB substrate;
  • the optical element Located between the COB light source and the aperture, it is used to refract the light beam emitted by each of the LED chips at least once, so that each of the refracted light beams converge on the aperture with a light spot of a set size
  • the setting position of the aperture; the aperture includes a light-transmitting hole penetrating it, used to cut the spot converged on it, and transmit the cut spot to the lens for projection.
  • the LED chip is a single white light source or a multi-color light source.
  • the optical element is a single lens or multiple lenses. .
  • the optical element includes a first lens and a second lens that are sequentially arranged from the COB light source in the direction of the aperture and spaced apart from each other.
  • the first lens and the second lens are both spherical lenses, wherein the first lens is a crescent-shaped spherical lens, the first lens covers the light-emitting surface of the COB light source, and the second lens is made of A spherical mirror composed of two convex mirrors.
  • the stage lighting device further includes a field lens, the field lens is located between the optical element and the aperture; the field lens and the optical element jointly collect the light emitted by the COB light source Light and light distribution.
  • the field lens is a single-piece spherical lens or a single-piece aspheric lens.
  • the size of the light spot is larger than the size of the light-transmitting hole of the aperture.
  • the stage lighting device further includes a CMY system arranged between the optical element and the field lens, and the CMY system is used to switch between different light colors.
  • the stage lighting device further includes a zoom lens, the zoom lens is arranged on the light exit side of the aperture, and is used for projecting the light spot emitted from the aperture.
  • the stage light illuminating device of the present invention has a small light-emitting area of the COB light source, reduces the amount of optical expansion, facilitates secondary optical design, and enables the stage to have great flexibility; simple structure and low cost , Easy to produce and process.
  • Fig. 1 is a schematic structural diagram of the first embodiment of the stage light illuminating device of the present invention.
  • Fig. 2 is a schematic structural diagram of the second embodiment of the stage light illuminating device of the present invention.
  • the present invention provides a stage light illuminating device 100.
  • the stage light illuminating device 100 includes a COB light source 1, an optical component 2, and an aperture 3 arranged sequentially and spaced apart from each other. And zoom lens group 4.
  • the COB light source 1 is a Chip On Board (COB) light source, including a COB substrate (not shown) and multiple LED chips 11 mounted on the COB substrate; the LED in this embodiment There are five chips 11 arranged from top to bottom and spaced apart.
  • the LED chips 11 are single white light sources or multi-color light sources.
  • the light emitted by any one of the LED chips 11 is refracted by the optical component 2 and then is converged on the aperture 3 and imaged into a light spot of a predetermined size, for example, the size of the light spot is larger than the size of the aperture 3.
  • the light emitted by multiple LED chips 11 is repeatedly superimposed on the spot position to form a spot with relatively uniform color and brightness.
  • the COB light source 1 has a small light-emitting area and is easy for secondary optical design; the structure is simple and easy to assemble and produce; the cost is low, the performance remains unchanged, and it has superior cost performance and market competitiveness; the concentration of the LED chips 11 is conducive to unification Thermal management.
  • the optical component 2 is located between the COB light source 1 and the aperture 3, and is used to refract the light beam emitted by each LED chip 11 at least once, so that each of the refracted light beams can be set Spots of large and small are converged at the set position of the aperture 3.
  • the optical component 2 is a single lens or multiple lenses.
  • the optical component 2 is multiple lenses.
  • the optical component 2 includes the COB light source 1 and is sequentially arranged in the direction of the aperture 3 And the first lens 21 and the second lens 22 are spaced apart from each other.
  • the first lens 21 is a crescent-shaped spherical lens, the first lens 21 covers the light-emitting surface of the COB light source 1, and the second lens 22 is a spherical lens composed of two convex mirrors.
  • the aperture 3 is used to cut the light spot converged thereon, and transmit the cut light spot to the lens for projection, and the size of the light spot is larger than the size of the light-transmitting hole 31 of the aperture 3.
  • the aperture 3 has a circular ring structure, which is composed of a light transmission hole 31 and a peripheral circular ring portion 32.
  • the zoom lens group 4 is arranged on the light exit side of the aperture 3 and is used to project the light spot emitted from the aperture 3. That is, the zoom lens group 4 performs angular scaling and spot size conversion of the light spot refracted by the aperture 3, and then projects the light spot onto the receiving surface to realize imaging.
  • the zoom lens group 4 can be designed to be composed of a single lens or multiple lenses according to the size of the light spot and the imaging quality; in this embodiment, the zoom lens group 4 is a single crescent-shaped spherical lens and consists of the aperture 3 is recessed toward the zoom lens group 4.
  • the stage light lighting device 100 of the present invention is designed based on the Kolar lighting principle.
  • the light emitted by any one of the LED chips 11 on the copper substrate is refracted by the optical component 2 and finally converges to all the lights.
  • Above the aperture 3 a light spot slightly larger than the size of the aperture 3 is formed; the light emitted by different LED chips 11 is repeatedly superimposed on the light spot position to form a light spot with relatively uniform color and brightness. After being cut, the light spot is finally projected onto the receiving surface through the zoom lens group 4.
  • the COB light source has a small light-emitting area, reduces the amount of optical expansion, facilitates secondary optical design, and makes the stage extremely flexible.
  • This embodiment is basically the same as the first embodiment above, except that a field lens is added between the optical component and the aperture, as follows:
  • the present invention provides a stage light illuminating device 100', from left to right, the stage light illuminating device 100' includes a COB light source 1'and an optical assembly 2'which are arranged in sequence and spaced apart from each other. , Field lens 3', aperture 4'and zoom lens group 5'.
  • the COB light source 1' is a chip-on-board (COB) light source, including a COB substrate (not shown) and multiple LED chips 11' arranged on the COB substrate; There are five LED chips 11', arranged from top to bottom and spaced apart from each other, and the LED chips 11' are a single white light source or a multi-color light source;
  • COB chip-on-board
  • the light emitted by any one of the LED chips 11' is refracted by the optical component 2'and the field lens 3'and then converges on the aperture 4'and is imaged as a light spot of a predetermined size.
  • the size of the light spot is larger than the size of the aperture 4'.
  • the light emitted by the multiple LED chips 11' is repeatedly superimposed on the spot position to form a spot with relatively uniform color and brightness.
  • the COB light source 1' has a small light-emitting area and is easy for secondary optical design; simple structure, convenient for assembly and production; low cost, unchanged performance, superior cost performance and market competitiveness; the LED chip 11' is concentrated and has Conducive to unified thermal management.
  • the optical component 2'and the field lens 3' jointly refract the light emitted by each LED chip 11' in the COB light source 1'.
  • the light brightness and color of the stage light illuminating device in this embodiment are more uniform.
  • the optical assembly 2' may be a single lens or multiple lenses.
  • the optical assembly 2' is a plurality of lenses.
  • the optical assembly 2' includes the COB light source 1'to the The field lenses 3'are arranged in sequence and spaced apart from the first lens 21' and the second lens 22'.
  • the first lens 21' is a crescent-shaped spherical mirror.
  • the first lens 21' covers the light-emitting surface of the COB light source 1', and the second lens 22' is a spherical mirror composed of two convex mirrors.
  • the field lens 3' is a single spherical lens or a single aspheric lens.
  • the field lens 3' is a single spherical lens composed of two convex mirrors.
  • the aperture 4' is used to cut the light spot, and the size of the light spot is larger than the size of the aperture 4'.
  • the aperture 4' has a circular ring structure, which is composed of a light transmission hole 41' and an outer ring portion 42'.
  • the zoom lens group 5' is arranged on the light exit side of the aperture 4', and is used to project a light spot emitted from the aperture 4'. . That is, the zoom lens group 5'performs angular scaling and transformation of the light refracted by the aperture 4', and then projects the light onto the receiving surface to realize imaging.
  • the zoom lens group 5' can be designed to be composed of a single lens or multiple lenses according to the size of the spot and the imaging quality; in this embodiment, the zoom lens group 5'is a single crescent-shaped spherical lens, and is composed of all
  • the aperture 4' is recessed toward the zoom lens group 5'.
  • the stage lighting device 100' of the present invention is designed based on the Kolar lighting principle. Any one of the LED chips 11' on the copper substrate, the light emitted by it, passes through the optical assembly 2'and the field After the mirror 3'receives light and distributes the light, it is refracted and finally converges on the aperture 4'to form a light spot slightly larger than the size of the aperture 4'; the light emitted by the different LED chips 11' Repeatedly superimpose on the spot position to form a spot with relatively uniform color and brightness. After the spot is cut, it is finally projected onto the receiving surface through the zoom lens group 5'.
  • CMY can be set between the optical assembly 2'and the field lens 3'.
  • Optical components such as system (not shown) or Mitsubishi mirror (not shown); CMY system, namely Cyan Magenta Yellow (CMY), can switch between different light colors; from the field lens
  • CMY system namely Cyan Magenta Yellow (CMY)
  • CMY Cyan Magenta Yellow
  • the angle between the 3'refracted light and the lens normal of the CMY system is small, which can increase the transmittance of the head; at the same time, the light reflected from the CMY system will illuminate the optical assembly 2'and the COB light source relatively dispersedly 1', thereby protecting the LED chip 11' and the optical component 2'from being burnt out, eliminating product hazards, and improving the reliability of the stage lighting device 100' on the stage.
  • the stage light illuminating device 100' of this embodiment has the same advantages and better effects, higher optical utilization rate; stronger spatial flexibility, better spot effect, more uniform color and brightness, After the aperture is cut, the light at the edge of the spot converges better.
  • the stage light illuminating device of the present invention has a small light-emitting area of the COB light source, reduces the amount of optical expansion, facilitates secondary optical design, and enables the stage to have great flexibility; simple structure and low cost , Easy to produce and process.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种舞台灯照明装置（100），包括COB光源（1）、光学组件（2）以及光圈（3）；COB光源（1）包括COB基板和安装于COB基板上的多颗LED芯片（11）；光学组件（2）位于COB光源（1）和光圈（3）之间，用于对每颗LED芯片（11）发出的光束进行至少一次折射，以使折射后的每个光束以设定大小的光斑汇聚于光圈（3）的设定位置；光圈（3），包括贯穿其上的透光孔（31），用于切割汇聚于其上的光斑，并将切割后的光斑透射至变焦镜头组（4）进行投影。与相关技术相比，该舞台灯照明装置（100）减小了发光面积，降低了光学扩展量，利于二次光学设计；结构简单，便于生产，成本低。

Description

舞台灯照明装置 技术领域
本实用新型涉及一种舞台照明领域，尤其涉及一种舞台灯照明装置。
背景技术
随着生活水平的提高，舞台表演越来越受人们的欢迎；舞台照明也走进了人们的视野，成为舞台表演中不可缺少的造型手段。
传统的舞台照明装置主要有两类，即采用LED芯片模组的舞台照明装置和采用传统光源的舞台照明装置。采用LED芯片模组的舞台照明装置出光效果好，灵活性较强；采用传统光源的舞台照明装置结构简单。
但是现有技术中，采用LED芯片模组的舞台照明装置内部结构复杂，组装精度要求高，导致生产加工不便；且市面上的采用LED芯片模组的舞台照明装置价格昂贵，不利于普及和推广。采用传统光源的舞台照明装置体积大，发光面大，不易于二次光学设计；能耗高，不利于节能环保。
因此，有必要提供一种新的舞台灯照明装置解决上述问题。
实用新型内容
本实用新型需要解决的技术问题是提供一种发光面积小，便于二次光学设计，结构简单的且便于生产加工的舞台灯照明装置。
为解决上述技术问题，本实用新型一种舞台灯照明装置，包括COB光源、光学元件以及光圈；所述COB光源包括COB基板和安装于所述COB基板上的多颗LED芯片；所述光学元件位于所述COB光源和所述光圈之间，用于对每颗所述LED芯片发出的光束进行至少一次折射，以使折射后的每个所述光束以设定大小的光斑汇聚于所 述光圈的设定位置；所述光圈，包括贯穿其上的透光孔，用于切割汇聚于其上的光斑，并将切割后的所述光斑透射至镜头进行投影。
优选的，所述LED芯片为单白光光源或多色光光源。
优选的，所述光学元件为单片透镜或多片透镜。。
优选的，所述光学元件包括由所述COB光源向所述光圈方向依次设置且相互间隔的第一透镜与第二透镜。
优选的，所述第一透镜与第二透镜均为球面镜，其中，所述第一透镜为月牙形球面镜，所述第一透镜包覆所述COB光源的出光面，所述第二透镜是由两面凸面镜组成的球面镜。
优选的，所述舞台灯照明装置还包括场镜，所述场镜位于所述光学元件与所述光圈之间；所述场镜与所述光学元件共同对所述COB光源发出的光进行收光及配光。
优选的，所述场镜为单片球面透镜或单片非球面透镜。
优选的，所述光斑的尺寸大于所述光圈的透光孔的尺寸。
优选的，所述舞台灯照明装置还包括设置在所述光学元件与所述场镜之间的CMY系统，所述CMY系统用于实现不同光色之间的切换。
优选的，所述舞台灯照明装置还包括变焦镜头，所述变焦镜头设置在所述光圈的出光侧，用于投射从所述光圈出射的光斑。
相较于现有技术，本实用新型的舞台灯照明装置，所述COB光源发光面积小，降低了光学扩展量，易于二次光学设计，使舞台具有极大的灵活性；结构简单，成本低，便于生产加工。
附图说明
为了使本实用新型的内容更加清晰，下面将对实施例描述中所需要使用的附图作简单的介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图，其中：
图1为本实用新型舞台灯照明装置实施方式一的结构示意图。
图2为本实用新型舞台灯照明装置实施方式二的结构示意图。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
实施例一
请参图1所示，本实用新型提供了一种舞台灯照明装置100，由左至右，所述舞台灯照明装置100包括顺次设置且相互间隔的COB光源1、光学组件2、光圈3及变焦镜头组4。
所述COB光源1，即为板上芯片(Chip On Board，COB)光源，包括COB基板(图未示)和安装于所述COB基板上的多颗LED芯片11；本实施例中所述LED芯片11有五颗，至上而下排列且相互间隔，所述LED芯片11为单白光光源或多色光光源。
任意一颗所述LED芯片11发出的光经所述光学组件2折射后均汇聚到所述光圈3上并成像为设定大小的光斑，比如所述光斑尺寸大于光圈3的尺寸。多颗所述LED芯片11所发出的光，在所述光斑位置上反复叠加，会形成一个颜色和亮度比较均匀的光斑。
通过对每颗所述LED芯片11颜色的控制，可以获得不同颜色的光束。
所述COB光源1发光面积小，易于二次光学设计；结构简单便于组装和生产；成本低，性能保持不变，具备优越的性价比和市场竞争力；所述LED芯片11集中，有利于进行统一的热管理。
所述光学组件2位于所述COB光源1和所述光圈3之间，用于对每颗所述LED芯片11发出的光束进行至少一次折射，以使折射后的每个所述光束以设定大小的光斑汇聚于所述光圈3的设定位置。
所述光学组件2为单片透镜或多片透镜，本实施例中所述光学组件2为多片透镜，具体的，所述光学组件2包括所述COB光源1向所述光圈3方向依次设置且相互间隔第一透镜21和第二透镜22。
所述第一透镜21为月牙形球面镜，所述第一透镜21包覆所述COB光源1的出光面，所述第二透镜22是由两面凸面镜组成的球面镜。
所述光圈3用于用于切割汇聚于其上的光斑，并将切割后的所述光斑透射至镜头进行投影，且所述光斑尺寸大于所述光圈3的透光孔31的尺寸。本实施例中所述光圈3为圆环结构，由透光孔31和外围的圆环部32组成。
所述变焦镜头组4设置在所述光圈3的出光侧，用于投射从所述光圈3出射的光斑。即所述变焦镜头组4将所述光圈3切割折射出的光斑进行角度缩放及光斑大小变换后，投影至接收面上，进而实现成像。所述变焦镜头组4根据光斑的大小及成像质量不同，可设计为由单片或多片透镜组成；本实施例中所述变焦镜头组4为单片月牙形球面透镜，且由所述光圈3向所述变焦镜头组4凹陷。
不同的芯片的发光位置不同，但却最终汇聚于同一区域，形成相同的光斑大小，这就需要对光学元件进行对应配置。本实用新型的舞台灯照明装置100，基于柯拉照明原理进行设计，所述铜基板上任意一颗所述LED芯片11，其发出的光经过所述光学组件2折射后，最终均汇聚到所述光圈3之上，形成一个比所述光圈3尺寸略大的光斑；不同所述LED芯片11所发出的光，在该光斑位置上反复叠加，会形成一个颜色和亮度均比较均匀的光斑，该光斑经切割之后，最后通过所述变焦镜头组4投影到接收面上。
本实用新型的上述舞台灯照明装置100，所述COB光源发光面积小，降低了光学扩展量，易于二次光学设计，使舞台具有极大的灵活性。
实施例二
本实施方式与上述实施方式一基本相同，不同的是，在所述光学组件与光圈之间增充场镜，具体如下：
如图2所示，本实用新型提供了一种舞台灯照明装置100'，由左至右，所述舞台灯照明装置100'包括顺次设置且相互间隔的COB光 源1'、光学组件2'、场镜3'、光圈4'及变焦镜头组5'。
所述COB光源1'，即为板上芯片(Chip On Board，COB)光源，包括COB基板(图未示)和设置在所述COB基板上的多颗LED芯片11'；本实施例中所述LED芯片11'有五颗，至上而下排列且相互间隔，所述LED芯片11'为单白光光源或多色光光源；
任意一颗所述LED芯片11'发出的光经所述光学组件2'与所述场镜3'折射后均汇聚到所述光圈4'上并成像为设定大小的光斑。比如所述光斑尺寸大于所述光圈4'的尺寸。多颗LED芯片11'所发出的光，在该光斑位置上反复叠加，会形成一个颜色和亮度均比较均匀的光斑。
通过对每颗所述LED芯片11'颜色的控制，可以获得不同颜色的光束。
所述COB光源1'发光面积小，易于二次光学设计；结构简单，便于组装和生产；成本低，性能保持不变，具备优越的性价比和市场竞争力；所述LED芯片11'集中，有利于进行统一的热管理。
所述光学组件2'与所述场镜3'共同对所述COB光源1'中每颗LED芯片11'发出的光进行折射。与实施例一无场镜结构的舞台灯照明装置相比，本实施例中的舞台灯照明装置成像的光亮度和颜色更加均匀。
所述光学组件2'可为单片透镜或多片透镜，本实施例中所述光学组件2'为多片透镜，具体，所述光学组件2'包括所由述COB光源1'向所述场镜3'方向依次设置且相互间隔第一透镜21'和第二透镜22'。
所述第一透镜21'为月牙形球面镜所述第一透镜21'包覆所述COB光源1'的出光面，所述第二透镜22'是由两面凸面镜组成的球面镜。
所述场镜3'为单片球面透镜或单片非球面透镜，本实施例中所述场镜3'是由两面凸面镜组成的单片球面透镜。
所述光圈4'用于对所述光斑进行切割，且所述光斑尺寸大于所述光圈4'尺寸。本实施例中所述光圈4'为圆环结构，由透光孔41'和外 围的圆环部42'组成。
所述变焦镜头组5'设置在所述光圈4'的出光侧，用于投射从所述光圈4'出射的光斑。。即所述变焦镜头组5'将所述光圈4'切割折射出的光进行角度缩放及变换后，投影至接收面上，进而实现成像。所述变焦镜头组5'根据光斑的大小及成像质量不同，可设计为由单片或多片透镜组成；本实施例中所述变焦镜头组5'为单片月牙形球面透镜，且由所述光圈4'向所述变焦镜头组5'凹陷。
本实用新型的舞台灯照明装置100'，基于柯拉照明原理进行设计，所述铜基板上任意一颗所述LED芯片11'，其发出的光，经过所述光学组件2'与所述场镜3'收光及配光后，发生折射，最终均汇聚到所述光圈4'之上，形成一个比所述光圈4'尺寸略大的光斑；不同所述LED芯片11'所发出的光，在该光斑位置上反复叠加，会形成一个颜色和亮度均比较均匀的光斑，该光斑经切割之后，最后通过所述变焦镜头组5'投影到接收面上。
本实施例中增加了所述场镜3'结构，该结构增加了所述舞台灯照明装置100'的内部空间，因此可以在所述光学组件2'与所述场镜3'之间设置CMY系统(图未示)或三菱镜(图未示)等光学元件；CMY系统，即相减混色模式系统(Cyan Magenta Yellow，CMY)，可以实现不同光色之间的切换；从所述场镜3'折射出的光与CMY系统镜片法线夹角小，可以提升头的透过率；同时从所述CMY系统反射回来的光会相对分散的照射所述光学组件2'和所述COB光源1'上，从而保护了所述LED芯片11'和所述光学组件2'，避免其被烧毁，排除了产品隐患，提高了舞台所述舞台照明装置100'的可靠性。
与实施例一相比，本实施例的舞台灯照明装置100'有着同样的优点及更好的效果，光学利用率更高；空间灵活性更强，光斑效果更好，颜色及亮度更均匀，经过光圈切割之后的光斑边缘光线收敛更好。
相较于现有技术，本实用新型的舞台灯照明装置，所述COB光源发光面积小，降低了光学扩展量，易于二次光学设计，使舞台具有极大的灵活性；结构简单，成本低，便于生产加工。
以上实施例仅为清楚说明本实用新型所作的举例，并非对实施方式的限定；本实用新型的范围包括并不限于上述实施例，凡是按照本实用新型的形状、结构所作的等效变化均包含在本实用新型的保护范围内。

Claims (10)

  1. 一种舞台灯照明装置，其特征在于，包括COB光源、光学元件以及光圈；
    所述COB光源包括COB基板和安装于所述COB基板上的多颗LED芯片；
    所述光学元件位于所述COB光源和所述光圈之间，所述COB光源的多颗LED芯片围绕所述光学元件的光轴分布，所述光学元件用于对每颗所述LED芯片发出的光束进行至少一次折射，以使折射后的每个所述光束以设定大小的光斑汇聚于所述光圈的设定位置；
    所述光圈，包括贯穿其上的透光孔，用于切割汇聚于其上的光斑，并将切割后的所述光斑透射至镜头进行投影。
  2. 根据权利要求1所述的舞台灯照明装置，其特征在于，所述LED芯片为单白光光源或多色光光源。
  3. 根据权利要求1所述的舞台灯照明装置，其特征在于，所述光学元件为单片透镜或多片透镜。
  4. 根据权利要求1所述的舞台灯照明装置，其特征在于，所述光学元件包括由所述COB光源向所述光圈方向依次设置且相互间隔的第一透镜与第二透镜。
  5. 根据权利要求4所述的舞台灯照明装置，其特征在于，所述第一透镜与第二透镜均为球面镜，其中，所述第一透镜为月牙形球面镜，所述第一透镜包覆所述COB光源的出光面，所述第二透镜是由两面凸面镜组成的球面镜。
  6. 根据权利要求1所述的舞台灯照明装置，其特征在于，所述舞台灯照明装置还包括场镜，所述场镜位于所述光学元件与所述光圈之间；所述场镜与所述光学元件共同对所述COB光源发出的光进行收光及配光。
  7. 根据权利要求6所述的舞台灯照明装置，其特征在于，所述场镜为单片球面透镜或单片非球面透镜
  8. 根据权利要求1所述的舞台灯照明装置，其特征在于，所述光斑的尺寸大于所述光圈的透光孔的尺寸。
  9. 根据权利要求6所述的舞台灯照明装置，其特征在于，所述舞台灯照明装置还包括设置在所述光学元件与所述场镜之间的CMY系统，所述CMY系统用于实现不同光色之间的切换。
  10. 根据权利要求1所述的舞台灯照明装置，其特征在于，所述舞台灯照明装置还包括变焦镜头，所述变焦镜头设置在所述光圈的出光侧，用于投射从所述光圈出射的光斑。
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