CN101936476B - 三色混光led点光源装置 - Google Patents

三色混光led点光源装置 Download PDF

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CN101936476B
CN101936476B CN2010102893883A CN201010289388A CN101936476B CN 101936476 B CN101936476 B CN 101936476B CN 2010102893883 A CN2010102893883 A CN 2010102893883A CN 201010289388 A CN201010289388 A CN 201010289388A CN 101936476 B CN101936476 B CN 101936476B
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light source
led
light
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CN101936476A (zh
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章绍汉
蒲小满
石伏秋
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hon Hai Precision Industry Co Ltd
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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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • 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
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • 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
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0905—Dividing and/or superposing multiple light beams
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0972—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • 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
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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
    • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种三色混光LED点光源装置，包括壳体及固定在壳体内的微棱镜光学板和电路基板，其特征在于：所述微棱镜光学板上形成沿两个不同方向延伸的多个V形脊，所述LED电路基板上排布三种能够发出不同颜色的多个单色LED点光源，使每个LED点光源发射的光线经过微棱镜光学板后形成四个虚拟光源，每三个发出不同颜色的LED点光源构成一个光源组，每个光源组中的LED点光源以预设距离排布，使得每个光源组中的LED点光源所产生的虚拟光源重叠。本发明将三种不同颜色的LED点光源混光，加强光亮度的同时，提高光的演色性。

Description

三色混光LED点光源装置
技术领域
本发明涉及一种点光源装置，特别是涉及一种可调节光色的三色混光LED点光源装置。
背景技术
LED具有无汞、高发光效率、使用寿命长等优点，具有逐渐取代传统照明光源之趋势。现有LED点光源装置搭配微棱镜光学板使LED点光源产生多倍化的虚拟光源，使在不影响发光亮度的情况下，减少LED的数量，节省了成本，但单色LED照明装置只能做亮度的调整并无法做光色的变化，这使得无法随着环境的变化发射出适当的光色。现有做法中，通常设置两种颜色的LED点光源，形成适应环境的混光光色，但演色性不足，在该混光光色下，容易导致部分物体的颜色失真。如何在保证光的亮度同时扩大混光的色域范围，提高混光的演色性，成有有待解决的问题。
发明内容
有鉴于此，有必要提供一种三色混光LED点光源阵列的光源装置提高出射光的亮度的同时，提高混光的演色性。
一种LED点光源装置，包括壳体及固定在壳体内的微棱镜光学板和电路基板。所述微棱镜光学板上形成沿两个不同方向延伸的多个V形脊，所述LED电路基板上排布三种能够发出不同颜色的多个LED点光源，使每个LED点光源发射的光线经过微棱镜光学板后形成四个虚拟光源，每三个发出不同颜色的LED点光源构成一个光源组，每个光源组中的LED点光源以预设距离排布，使得每个光源组中的LED点光源所产生的虚拟光源重叠。
本发明的LED点光源装置将单一LED点光源发出的光线扩散成四个虚拟光源并向特定视角范围内聚集，增加单色光的光亮度，且相互交替排列的三色LED点光源，使三种光色的虚拟光源叠加，形成新的混光光色，提高光的色域范围，即提高光的演色性。
附图说明
图1为本发明中三色混光LED点光源装置的剖面示意图。
图2为图1中微棱镜光学板的立体结构示意图。
图3为图1中单一LED点光源产生四个虚拟光源示意图。
图4为图1中三色LED点光源排布示意图。
图5为图1中三色LED点光源产生虚拟光源的混光的示意图。
图6为图1中虚拟光源的混光区域示意图。
主要元件符号说明
LED点光源装置           100
壳体                    10
底板                    101
侧壁                    102
保护罩                  103
电路基板                20
LED点光源               201
光源组                  202
光源组矩阵              203
虚拟光源                204
混光光色                205
LED点光源阵列           21
部分混光区              22
完全混光区              23
微棱镜光学板            30
入光面                  301
出光面                  302
V形脊                    303、313、314、315、316
具体实施方式
请参阅图1，一种三色混光的LED点光源装置100包括壳体10、电路基板20和微棱镜光学板30。壳体10包括一个底板101、沿底板101的四周延伸的侧壁102及一保护罩103。该底板101和该侧壁102围成一收容腔。所述保护罩103由透明玻璃、毛玻璃、透明塑胶板等透明材质中的一种制成，保护罩103位于微棱镜光学板30的上方，用于保护微棱镜光学板30的表层不受到污染或刮伤。本实施方式中，所述壳体10可由具有高反射率的金属或塑料制成，或由涂布有高反射率涂层的金属或塑料制成，所述底板101内表面涂布有高反射率涂层。所述电路基板20固定在底板101上，电路基板20的表面排布三个或多个不同颜色的单色LED点光源201。所述微棱镜光学板30位于该壳体10内，其位于LED点光源201的上方且大致与底板101平行。
请参阅图2和图3，所述微棱镜光学板30由透明塑胶材质制成，其具有入光面301及与入光面301相对的出光面302，该入光面301为平面且面向LED点光源201，该出光面302上形成有两个不同方向延伸的多个V形脊303，且该两方向延伸的多个V形脊303相互交错排列，且具有共同的连接点，使得单一LED点光源201发射的光线通过该微棱镜光学板30形成如图3所示的4个虚拟光源204，所述虚拟光源204均匀分布在以该LED点光源201为圆心、以R为半径的圆周上。其中，半径R的值与微棱镜光学板30距LED点光源201的高度相关。
本实施方式中，每个V形脊303的顶角呈45度，该多个V形脊303沿两个不同方向延伸，包括多个沿第一方向X1延伸的多个长条状V形脊313和多个沿第二方向X2延伸的多个长条状V形脊314，在本实施方式中，沿第一方向X1延伸的多个长条状V形脊313和沿第二方向X3延伸的多个长条状V形脊315相互正交于一点。分别与两个正交方向X1及X2延伸的长条状V形脊313及314具有共同连接点的对称方向X3及X4也形成长条状V形脊315及316。
请参阅图4和图5，所述电路基板20表面排布三种不同颜色的多个LED点光源201，每三个不同颜色的LED点光源201构成一个光源组202，多个光源组202组成点光源阵列21。每个光源组202中的三个LED点光源201以预设距离排布，使不同颜色的LED点光源201所产生的虚拟光源204重叠，形成新的混光光色。本实施方式中，每个光源组202中三种颜色的LED点光源201排布顺序及位置相同，其中，光源组202形成以2R为底边、以
Figure BDA0000026918330000041
R为腰的等腰三角形，三个不同颜色的LED点光源201顺次的排列在该等腰三角形的三顶点上。多个光源组202构成光源组矩阵203，光源组矩阵203的行间距和列间距分别设置为R和2R。以此排列方式形成三色网状LED点光源矩阵21，使得相邻的三种颜色的LED点光源201所产生的虚拟光源204规则性重叠，重叠部分形成三种光色的混光，形成新的混光光色205。例如：三种颜色的LED点光源201分别为RGB三原色，该RGB三原色完全混光形成白光。在需要时，可通过调节三种光色LED点光源201的输入功率比或来调节LED阵列的混光光色。
请参阅图6，本实施方式中，所述LED点光源阵列21中，最外层LED点光源201所形成的虚拟光源204不完全发生混光，该区域为部分混光区22，被最外层LED点光源201所包围的内部其它LED点光源201所产生的虚拟光源204形成完全混光，该区域为完全混光区23。
本发明的三色混光LED点光源装置100，由于在微棱镜光学板30的出光面302设置有两方向的多个长条状V形脊，LED点光源201发出的光线透过出光面302时会发生特定的折射、反射等作用，从而将单一LED点光源201发出的光线扩散成四个虚拟光源204并向特定视角范围内聚集，相互交替排列的三色LED点光源201，使三种光色LED点光源201产生的虚拟光源叠加，叠加部分的混光形成新的混光光色205加强光亮度同时，提高光的色域范围，也就提高光的演色性。
本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本发明，而并非用作为对本发明的限定，只要在本发明的实质精神范围之内，对以上实施例所作的适当改变和变化都落在本发明要求保护的范围之内。

Claims (5)

1.一种LED点光源装置，包括壳体及固定在壳体内的微棱镜光学板和电路基板，其特征在于：所述微棱镜光学板上形成沿两个不同方向延伸的多个V形脊，所述电路基板上排布三种能够发出不同颜色的多个单色LED点光源，所述微棱镜光学板具有面向LED点光源的入光面和与入光面相对的出光面，所述入光面为平面，所述V形脊形成在所述出光面上，所述出光面上包括沿第一方向延伸的多个V形脊及与第一方向延伸的多个V形脊正交的沿第二方向延伸的多个长条状V形脊，使每个LED点光源发射的光线经过微棱镜光学板后形成四个虚拟光源，所述四个虚拟光源平均分布在以该LED点光源为圆心的圆周上，每三个发出不同颜色的LED点光源构成一个光源组，每个光源组中的LED点光源以预设距离排布，使得光源组中的LED点光源所产生的虚拟光源重叠。
2.如权利要求1所述的LED点光源装置，其特征在于，所述每个光源组中的LED点光源排布方式相同，每个光源组中的LED点光源设置在一等腰三角形的顶点上。
3.如权利要求1所述的LED点光源装置，其特征在于，所述微棱镜光学板由透明塑胶材质制成。
4.如权利要求1所述的LED点光源装置，其特征在于，所述壳体包括底板及沿底板的四周延伸的侧壁，该底板和该侧壁围成一收容腔，所述电路基板和微棱镜光学板设置在该收容腔中，其中，所述微棱镜光学板位于电路基板的上方且与底板平行。
5.如权利要求1所述的LED点光源装置，其特征在于，所述LED点光源装置还包括保护罩，该保护罩由透明材质制成，保护罩固定在微棱镜光学板的上方。
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