CN104937336A - 用于再循环光的包含具有两次反射的抛物面反射器的照明器系统 - Google Patents
用于再循环光的包含具有两次反射的抛物面反射器的照明器系统 Download PDFInfo
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- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/06—Optical design with parabolic curvature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/62—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
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- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
- G02B19/0023—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) at least one surface having optical power
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
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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
- G03B21/2066—Reflectors in illumination beam
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- 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
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- 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 array of point-like light-generating elements
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- 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
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
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- 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
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
- F21Y2113/17—Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
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- 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]
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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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
Abstract
一种照明器系统包括:光源和抛物面反射圈,所述抛物面反射圈定位在所述光源的周围,并且具有孔,中心轴线通过所述孔延伸。所述孔允许由所述光源以相对于所述轴线的低角度发射的光射线从所述抛物面反射圈被发射,同时由所述光源以较高角度发射的光射线被所述圈反射以进行再循环。所述抛物面反射圈被定位成使得较高角度的光射线被反射两次、离开相对壁反射部分、回到它们的起始点。优选地,所述光源是具有不同颜色和尺寸的多个LED的阵列。
Description
相关申请的交叉引用
本申请要求于2012年9月18日提交的美国临时申请第61/702,451号的权益。
背景技术
已经将具有球面反射器的照明器(lamp)与LED一起使用,以对光进行再循环,从而增加输出的亮度。如图1所示,将可以安装在散热器12上的LED 10布置在具有反射表面的半球面再循环圈(collar)16的曲率中心14处。圈16包括形成孔18的切口(cutout)。从LED 10以相对于中心轴线22相对低的角度,即小于角度α,发射的光射线20从该器件发射;而从LED以较大的角度,即大于角度α,发射的光射线24反射回到LED 10,以进行再循环。
圈16提供高的再循环效率。孔18的尺寸确定了再循环的数量。孔越小,那么再循环的百分比就越高,并且该系统的输出也就越亮。
如图1所示,从LED 10的中心发射的高角度光射线24将被反射回到LED10的中心。从偏心的位置发射的光射线26将在方向26a中按照镜像的方式被反射回去,该方向26a也是偏心的,但是位于LED表面的相对侧。
对于具有单个LED(或其他光源)的照明器而言,刚刚描述的系统将把所有大角度光射线24再循环回到LED 10上,以进行再循环。然而,对于具有多个光源,诸如,多种颜色LED的照明器而言,如果这种LED 10位于圈16的曲率中心处,则该系统将把高角度光射线反射回到相同的LED。如果图1中的光源,并不是单个LED 10,构成多个LED,则所述LED中最多只有一个可以位于曲率中心14处,并且使得高角度光射线再循环回到相同的LED。剩余的光源则必然被偏心地定位。如图1所示,如果LED 10要构成中心14相对侧的两个LED,则从曲率中心右侧的偏心定位的LED发射的高角度光射线26将被后面的表面在方向26a中反射到位于中心14相对侧的LED,即将影响与发射LED(或其他光源)不同的LED。结果是,偏心发射的高角度光射线26将无法被再循环,除非中心相对侧的LED与发射了光射线26的LED具有相同的颜色。
将期望提供一种其中可以使用多个光源的照明器,并且同时提供从光阵列的中心发射的、以及从中心14发射的高角度光射线24、26的有效再循环。还将期望提供一种系统,其中位于中心相对侧的LED可以具有不同颜色,并且其中,该系统提供高角度光射线26的再循环。
发明内容
一种照明器系统包括:光源和抛物面反射圈,所述抛物面反射圈定位在所述光源的周围,并且具有孔,中心轴线通过所述孔延伸。所述孔允许由所述光源以相对于所述轴线的低角度发射的光射线从所述抛物面反射圈被发射,同时由所述光源以较高角度发射的光射线被所述圈反射以进行再循环。
所述抛物面反射圈通过围绕穿过焦点且与准线平行的轴线旋转抛物曲线而制成。所得到的反射器是环形的,具有抛物表面。从布置在焦点的LED发射的光从抛物表面的一侧被反射,成为平行光束,入射到相对的抛物表面上,并且被重新聚焦回到所述LED自身。此抛物面再循环圈与如图1所示的球面再循环圈之间的一个主要区别在于,从位于焦点处和焦点附近发射的光将被抛物面反射器反射两次,并且回到其中发射了所述光的相同点。利用此属性,在与具有多个LED和多种颜色的封装一起使用的情况下,每个LED将能够独立地执行其自身光的再循环,并且具有其自身颜色的每个LED将能够提升亮度,而与其他LED和颜色无关。
所述抛物面反射圈被定位成使得较高角度的光射线被反射两次、离开相对壁反射部分、回到它们的起始点。优选地,所述光源是具有不同颜色和尺寸的多个LED的阵列。
附图说明
图1是具有半球面再循环圈的现有技术的照明器的示意图;
图2是根据本发明的照明器系统的示意图;
图3示意性地示出了由两个绿色、一个红色、和一个蓝色LED组成的光源阵列;
图4示意性地示出了与图3相似、但是其中LED相对于彼此具有不同尺寸的光源阵列;
图5是与图2相似、但是使用图3的光源阵列的照明器系统的示意图;
图6是商业上可得的多种颜色LED阵列的透视图;
图7是使用图5的照明器系统的探照灯(spot light)的示意图;
图8是与图2相似的、将微波等离子灯泡用作光源的照明器系统的示意图;以及
图9是使用图5的照明器系统的投影系统的示意图。
具体实施方式
参考图2,根据本发明的照明器系统30包括光源,例如LED 10。该光源由具有反射表面的圈32和以该照明器的轴线36为中心的孔34所包围。如在图1的情况下,孔34允许从照明器系统发射相对于轴线36具有预定角度以下的发射角的发射光射线,并且同时使得具有大于这种预定角度的发射角的光射线反射离开圈32的表面。
根据本发明,在(如图2所描绘的)横截面中,圈在任一侧具有抛物线形状,其在其中发射光的方向中收敛。光源,例如,LED 10,在抛物面圈32内被中心地定位。圈32被相对于光源10间隔开并且定向,使得以相对于轴线36相对低角度发射的光射线20通过开口34被发射,并且使得从LED的中心点38发射的较高角度光射线40在垂直于轴线36的方向中反射离开抛物面圈32。被反射的光射线40a被引导到圈32的相对壁,在那里它们朝LED 10反射回来。被反射两次的光射线40b以作为光射线40角度的镜像的角度(光射线40和40b之间呈90度)朝向LED 10被引导回来。
图2还图示了从LED 10的偏心位置发射的高角度光射线50在不垂直于轴线36的方向中被第一抛物曲面反射,即,使得射线50的反射角大于射线40的反射角。被反射的射线50a在点52处撞击相对抛物表面,并且被反射回到起源点54。因而,被第一次反射的射线50a被第二抛物表面以小于射线40a的反射角的角度反射。
参考图3和5,图3示出了RGGB LED阵列56形式的多种颜色光源阵列的示例,其具有组装在同一散热器57上的两个绿色LED、一个红色LED、和一个蓝色LED。图5示出了使用图3的RGGB阵列56和图2的再循环圈32的照明器系统59。如果RGGB阵列56相对于中心轴线36而居中,则从红色和绿色LED发射的光将在相对侧被与轴线偏心地发射。然而,由于存在双抛物面圈32,所以从绿色LED R发射的高角度光射线60将被反射回到绿色LED,作为被反射的射线60a和60b,并且来自红色LED R的高角度光射线62将被反射回到红色LED,作为被反射的射线62a和62b。
图4示出了由红色LED R、绿色LED G、蓝色LED B、和白色LED W组成的多种颜色光源64的另一示例。四个LED被安装在同一散热器(未示出)上。因为抛物面圈32将把高角度光射线60、62反射回到LED上发射了所述射线的相同点,如图4所图示的,LED可以具有不同的尺寸。
图6是马萨诸塞州比勒利卡的发光器件有限公司(Luminous Devices,Inc.,Billerica,Massachusetts)经营的、与图4对应的商业上可得的LED阵列。这种LED阵列被使用在通常需要多种颜色的许多应用中,诸如探照灯和舞台照明。
图7是使用图5的照明器系统59的探照灯的示例。发射的光射线20被引导穿过孔34,通过透镜系统70将输出光束20成形为期望的发散度。可以通过以适当功率驱动阵列56中的LED来控制输出的颜色。
图8是除了照明器系统59a的光源是单一颜色的微波等离子灯泡72之外、与图7相同的探照灯的替换实施例。在此情况下,双抛物面再循环圈32的成像属性在系统的对准方面允许更大的容限,只要光源与中心的任何偏离将成像回到光源72上。
图9示出了使用图5的照明器系统59的投影系统76的示例。如在图7的系统中一样,通过孔34发射的光射线20被引导通过透镜系统78。然后,该光束被引导通过光通道80,并其后被引导到投影引擎82的输入。透镜系统、光通道和投影引擎的使用是公知的,并无需进一步描述。
在每一个所描述的实施例中,对高角度光射线40、50、60、和62进行再循环以反射回到发射点,增加了照明器系统30、59、和59a的亮度,并且减少了照明器系统的集光率(entendue)。
抛物面再循环圈32可以由金属、玻璃、或塑料制成。反射涂层可以是目标定位在某种波长的铝、银、或多层介电涂层。
先前描述表现了本发明的优选实施例。各种修改对于本领域技术人员而言将是明显的。如在接下来的权利要求中阐释的一样,所有的这种修改和变化意欲处于本发明的范围之内。
Claims (8)
1.一种照明器系统,包括:
光源;
抛物面反射圈,定位在所述光源的周围,并且具有孔,中心轴线通过所述孔延伸;
其中,所述孔允许由所述光源以相对于所述轴线的低角度发射的光射线从所述抛物面反射圈被发射,并且反射由所述光源以较高角度发射的光射线以进行再循环;以及
其中,所述抛物面反射圈被定位成使得较高角度的光射线被反射两次、离开相对壁反射部分、回到它们的起始点。
2.根据权利要求1所述的照明器系统,其中,所述光源是具有多个颜色源的阵列,并且其中,所述抛物面反射圈将较高角度光射线反射两次,返回到每个相应的颜色源。
3.根据权利要求1所述的照明器系统,其中所述光源包括至少一个LED。
4.根据权利要求3所述的照明器系统,其中所述光源包括不同颜色的多个LED。
5.根据权利要求4所述的照明器系统,其中,所述LED相对于彼此具有不同的尺寸。
6.根据权利要求1所述的照明器系统,其中,所述光源是单一颜色LED的微波等离子灯泡。
7.一种探照灯,包含根据权利要求4所述的照明器系统。
8.一种投影系统,包含投影引擎,所述投影引擎具有用于接收根据权利要求4的照明器系统的输出的输入。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201261702451P | 2012-09-18 | 2012-09-18 | |
US61/702,451 | 2012-09-18 | ||
PCT/US2013/032127 WO2014046736A1 (en) | 2012-09-18 | 2013-03-15 | Lamp system having parabolic reflector with two reflections for recycling light |
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CN104937336A true CN104937336A (zh) | 2015-09-23 |
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CN201380048667.2A Pending CN104937336A (zh) | 2012-09-18 | 2013-03-15 | 用于再循环光的包含具有两次反射的抛物面反射器的照明器系统 |
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US (1) | US20140078730A1 (zh) |
EP (1) | EP2898260A4 (zh) |
JP (1) | JP2015531982A (zh) |
KR (1) | KR20150058295A (zh) |
CN (1) | CN104937336A (zh) |
CA (1) | CA2885241A1 (zh) |
HK (1) | HK1213040A1 (zh) |
TW (1) | TWI607180B (zh) |
WO (1) | WO2014046736A1 (zh) |
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EP3446029B1 (en) * | 2016-04-22 | 2019-11-06 | Signify Holding B.V. | Integrated air guide and beam shaping' |
JP6636651B2 (ja) * | 2016-04-22 | 2020-01-29 | シグニファイ ホールディング ビー ヴィSignify Holding B.V. | 小石板状ルーバ |
EP3290783B1 (en) * | 2016-09-04 | 2019-05-15 | Harman Professional Denmark ApS | Light fixture comprising light sources, lenslets and a reto-refector |
US11402617B2 (en) | 2018-07-12 | 2022-08-02 | Clark Wagner | System and method for generating white light for projectors |
US11656474B2 (en) | 2019-01-15 | 2023-05-23 | Sony Group Corporation | Collimator lens, light source device, and image display device |
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Also Published As
Publication number | Publication date |
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EP2898260A4 (en) | 2016-04-27 |
HK1213040A1 (zh) | 2016-06-24 |
TW201413170A (zh) | 2014-04-01 |
TWI607180B (zh) | 2017-12-01 |
KR20150058295A (ko) | 2015-05-28 |
CA2885241A1 (en) | 2014-03-27 |
EP2898260A1 (en) | 2015-07-29 |
WO2014046736A1 (en) | 2014-03-27 |
US20140078730A1 (en) | 2014-03-20 |
JP2015531982A (ja) | 2015-11-05 |
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