WO2015196671A1 - 一种灯具及其光学模组 - Google Patents

一种灯具及其光学模组 Download PDF

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Publication number
WO2015196671A1
WO2015196671A1 PCT/CN2014/089408 CN2014089408W WO2015196671A1 WO 2015196671 A1 WO2015196671 A1 WO 2015196671A1 CN 2014089408 W CN2014089408 W CN 2014089408W WO 2015196671 A1 WO2015196671 A1 WO 2015196671A1
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Prior art keywords
light
optical module
lens
light source
light shielding
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English (en)
French (fr)
Inventor
祝文雪
邓诗涛
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Opple Lighting Co Ltd
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Opple Lighting Co Ltd
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Publication of WO2015196671A1 publication Critical patent/WO2015196671A1/zh
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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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • F21V1/16—Covers for frames; Frameless shades characterised by the material
    • F21V1/22—Covers for frames; Frameless shades characterised by the material the material being plastics
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages

Definitions

  • the invention relates to the field of illumination, and in particular to a lamp.
  • some LED lamps on the market require the edge of the spot where the light is emitted to be cut off, that is, the edge of the spot is required to be clear.
  • the use of a plano-convex lens or a lenticular lens to distribute light to the LED light source can improve the edge definition of the spot, but still has a large room for improvement.
  • the light-emitting surface of the LED light source also increases, especially the use of the COB light source, which will reduce the edge definition of the emitted light.
  • the technical problem to be solved by the present invention is to provide an optical module.
  • the optical module of the present invention includes an LED light source and a lens, the light of the LED light source is emitted through the lens, and the optical module further includes a light shielding member that at least partially blocks the LED The light source is directed at the light at the edge of the entrance face of the lens.
  • the light shielding member is provided with a light shielding surface surrounding the LED light source, and the light shielding surface at least partially blocks the light of the LED light source from entering the edge of the light incident surface of the lens.
  • the angle between the light shielding surface and the optical axis of the LED light source is E, 30° ⁇ E ⁇ 60°.
  • the light shielding member is made of a plastic that is opaque to light.
  • the light shielding member is provided with a support portion for supporting the lens.
  • the support portion extends from an edge of the light shielding member in a direction away from the LED light source.
  • the lens is a lenticular lens.
  • the LED light source is a COB light source.
  • the invention also provides a light fixture comprising the optical module of any of the preceding claims.
  • the sharpness of the edge of the exit spot of the luminaire can be significantly improved.
  • FIG. 1 is a perspective view of an optical module of the present invention
  • Figure 2 is a cross-sectional view of the optical module of Figure 1;
  • Figure 3 is an enlarged view of a portion X of Figure 2;
  • Figure 4 is a schematic view of a light shielding member
  • Figure 5 is a schematic illustration of a lens.
  • the optical module of this embodiment includes an LED light source 1 and a lens 2, and the light of the LED light source 1 is emitted through the lens 2.
  • the optical module further includes a light shielding member 3 that at least partially blocks light from the LED light source 1 toward the edge of the light incident surface 21 of the lens 2.
  • the light shielding member 3 is provided with a light shielding surface 31 surrounding the LED light source 1 , and the light shielding surface 31 at least partially blocks the light emitted by the LED light source 1 toward the edge of the light incident surface 21 of the lens 2 .
  • the light shielding member 3 includes a tapered wall 37 which is an inner surface of the tapered wall 37.
  • the light shielding member 3 includes a flat portion and a downwardly recessed portion formed in a central portion of the flat portion.
  • the outer wall surface of the downwardly recessed portion is the light shielding surface 31.
  • the straight line a is a straight line passing through the edge point F of the light incident surface of the lens 2 and the upper edge of the light shielding surface 31;
  • the straight line b is the entrance through the lens 2 A line point D of the smooth surface and a straight line of the upper edge of the light shielding surface 31.
  • the intersection of the straight line a and the straight line b with the light-emitting surface of the LED light source 1 is A and B, respectively.
  • the light of the circular area c with the diameter AB of the light-emitting surface of the LED light source 1 cannot be irradiated to the edge of the light-incident surface of the lens 2, that is, the light-shielding surface 31 blocks the light in the circular area c, so that the light in the circular area c is blocked.
  • This portion of the light cannot be incident on the edge of the light incident surface 21 of the lens 2. Since the edge of the light incident surface 21 of the lens 2 can only receive the light emitted by the partial light emitting surface of the LED light source 1, the light spot formed by the light passing through the edge of the light incident surface 21 becomes small, thereby The edge definition of the entire spot of the optical module is improved.
  • the angle between the light shielding surface 31 and the optical axis of the LED light source 1 is E.
  • the straight line d is a straight line parallel to the optical axis of the LED light source 1, and between the straight line d and the light shielding surface 31.
  • the angle E is the angle between the light shielding surface 31 and the LED light source 1.
  • the edge of the spot of the optical module is clearer, and the optical module has higher light efficiency, that is, a better balance between the edge definition of the spot and the light effect.
  • E 45°.
  • the light-shielding member 3 is made of an insulating opaque material, for example, made of an opaque plastic.
  • the light shielding member 3 is provided with a support portion 32 for supporting the lens 2. In this embodiment, the support portion 32 extends from the edge of the light shielding member 3 away from the LED light source 1 and is an annular vertical wall.
  • the light shielding member 3 further includes a connecting portion 39 having a flat shape, and the connecting portion 39 connects the tapered wall 37 and the support portion 32.
  • the lens 2 is a lenticular lens, that is, the light entering the lens 2 Both the face 21 and the light exit face 22 are convex.
  • the LED light source 1 is a COB light source.
  • An annular bracket 29 having an L-shaped cross section is further provided at one end of the light incident surface 21 of the lens 2.
  • the annular bracket 29 can be made of plastic, and the annular bracket 29 can be bonded and the lens 2 connection.
  • the lens 2 is mounted on the support portion 32 by an annular bracket 29 which can be coupled to the support portion 32 by snapping or screwing.
  • the lens 2 may also be a plano-convex lens, that is, the light incident surface 21 of the lens 2 is a flat surface, and the light exit surface 22 is a convex surface.
  • the included angle E may also be 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42. °, 43°, 44°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59° or 60°.
  • the invention also provides a light fixture comprising the optical module of any of the preceding claims.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种光学模组，包括LED光源（1）和透镜（2），LED光源（1）的光线经过透镜（2）出射，光学模组还包括遮光部件（3），其至少部分遮挡LED光源（1）射向透镜（2）的入光面边缘的光线。该光学模组的光斑边缘清晰。还提供一种包括该光学模组的灯具。

Description

一种灯具及其光学模组 技术领域
本发明涉及照明领域，尤其涉及一种灯具。
背景技术
目前，市场上的LED灯具有些要求出射光的光斑边缘截止，即要求光斑边缘清晰。相对于TIR透镜，采用平凸透镜或者双凸透镜给LED光源配光，可以提高光斑的边缘清晰度，但仍然有很大的提升空间。另外，当LED灯具的功率较大时，LED光源的发光面也会增大，尤其是COB光源的使用，会使出射光的光斑边缘清晰度降低。
发明内容
本发明所要解决的技术问题是提供一种光学模组。
为了解决以上技术问题，本发明的光学模组包括LED光源和透镜，所述LED光源的光线经过所述透镜出射，所述光学模组还包括遮光部件，所述遮光部件至少部分遮挡所述LED光源射向所述透镜的入光面边缘的光线。
优选地，所述遮光部件设有环绕所述LED光源的遮光面，所述遮光面至少部分遮挡所述LED光源射向所述透镜的入光面边缘的光线。
优选地，所述遮光面与所述LED光源的光轴的夹角为E，30°≤E≤60°。
优选地，所述遮光部件由不透光的塑料制成。
优选地，所述遮光部件上设有用于支撑所述透镜的支撑部。
优选地，所述支撑部自所述遮光部件的边缘向远离所述LED光源的方向延伸而成。
优选地，所述透镜为双凸透镜。
优选地，所述LED光源为COB光源。
本发明还提供一种灯具，包括前述任意一项所述的光学模组。
通过设置所述遮光部件，可以显著提高灯具的出射光斑的边缘的清晰度。
附图说明
图1是本发明的光学模组的立体示意图；
图2是图1中光学模组的剖视图；
图3是图2中局部X的放大图；
图4是遮光部件的示意图；
图5是透镜的示意图。
具体实施方式
下面结合图1至图5对本发明的光学模组的一种实施例进行详细说明。本实施例的光学模组包括LED光源1和透镜2，所述LED光源1的光线经过所述透镜2出射。所述光学模组还包括遮光部件3，所述遮光部件3至少部分遮挡所述LED光源1射向所述透镜2的入光面21边缘的光线。所述遮光部件3设有环绕所述LED光源1的遮光面31，所述遮光面31至少部分遮挡所述LED光源1射向所述透镜2的入光面21边缘的光线。在本实施例中，所述遮光部件3包括锥形壁37，所述遮光面31为所述锥形壁37的内表面。由于所述透镜2的入光面21的边缘只能接收到所述LED光源1的部分发光面发出的光线，因此经过所述入光面21的边缘的光线形成的光斑变小，从而使所述光学模组的整个光斑的边缘清晰度提高。在本实施例中，所述遮光部件3包括平板状部分以及形成于平板状部分的中心区域的向下凹陷部分， 向下凹陷部分的外壁面为所述遮光面31。如图2所示，在本实施例中，直线a为经过所述透镜2的入光面的边缘点F和所述遮光面31的上边缘的直线；直线b为经过所述透镜2的入光面的边缘点D和所述遮光面31的上边缘的直线。直线a、直线b分别与所述LED光源1的发光面的交点为A和B。所述LED光源1发光面的以直线AB为直径的圆形区域c的光线无法照射到所述透镜2的入光面的边缘，即所述遮光面31遮挡圆形区域c内的光线，使这部分光线无法照射到所述透镜2的入光面21的边缘。由于所述透镜2的入光面21的边缘只能接收到所述LED光源1的部分发光面发出的光线，因此经过所述入光面21的边缘的光线形成的光斑变小，从而使所述光学模组的整个光斑的边缘清晰度提高。所述遮光面31与所述LED光源1的光轴的夹角为E，如图3所示，直线d为与所述LED光源1的光轴平行的直线，直线d与遮光面31之间的夹角E即为遮光面31与所述LED光源1的夹角。当夹角E的角度增大时，光斑的清晰度随着增大，但将导致光学模组的光效降低，当夹角E＜30°时，光学模组的光效较高，但光斑的边缘还不够清晰；而当E＞60°时，光斑的边缘清晰度较高，但光学模组的光效较低，都不能很好地满足要求。当30°≤E≤60°时，光学模组的光斑的边缘较为清晰，并且光学模组的光效也较高，即在光斑边缘清晰度和光效之间达到了较好的平衡。在本实施例中，E＝45°。需要特别指出的是，在图2中，所述LED光源1的发光面的竖直中心线为所述LED光源1的光轴。所述遮光部件3由绝缘不透明的材料制成，例如用不透光的塑料制成。所述遮光部件3上设有用于支撑所述透镜2的支撑部32。在本实施例中，所述支撑部32自所述遮光部件3的边缘向远离所述LED光源1的方向延伸而成，为环形的竖直壁。通过设置支撑部32，可以方便控制LED光源1和透镜2之间的距离。所述遮光部件3还包括连接部39，所述连接部39呈平板状，所述连接部39连接所述锥形壁37和所述支撑部32。所述透镜2为双凸透镜，即所述透镜2的入光 面21和出光面22都是凸面。所述LED光源1为COB光源。所述透镜2的入光面21一端还设有横截面呈L形的环形支架29，所述环形支架29可以由塑料制成，所述环形支架29可以通过粘接的方式和所述透镜2连接。所述透镜2通过环形支架29安装在所述支撑部32上，所述环形支架29可以通过卡接或者螺纹连接的方式与所述支撑部32连接。
作为上述实施例的简单变形，所述透镜2也可以为平凸透镜，即所述透镜2的入光面21是平面，其出光面22是凸面。
作为上述实施例的简单变形，所述夹角E也可以是31°、32°、33°、34°、35°、36°、37°、38°、39°、40°、41°、42°、43°、44°、46°、47°、48°、49°、50°、51°、52°、53°、54°、55°、56°、57°、58°、59°或者60°。
本发明还提供一种灯具，包括前述任意一项所述的光学模组。
以上所述者，仅为本发明的较佳实施例而已，并非用来限定本发明的实施范围，即凡依本发明所作的均等变化与修饰，皆为本发明权利要求范围所涵盖，这里不再一一举例。

Claims (10)

  1. 一种光学模组，其特征在于，所述光学模组包括LED光源和透镜，所述LED光源的光线经过所述透镜出射，所述光学模组还包括遮光部件，所述遮光部件至少部分遮挡所述LED光源射向所述透镜的入光面边缘的光线。
  2. 根据权利要求1所述的光学模组，其特征在于，所述遮光部件设有环绕所述LED光源的遮光面，所述遮光面至少部分遮挡所述LED光源射向所述透镜的入光面边缘的光线。
  3. 根据权利要求2所述的光学模组，其特征在于，所述遮光面与所述LED光源的光轴的夹角为E，30°≤E≤60°。
  4. 根据权利要求2所述的光学模组，其特征在于，所述遮光部件由不透光的塑料制成。
  5. 根据权利要求1所述的光学模组，其特征在于，所述遮光部件上设有用于支撑所述透镜的支撑部。
  6. 根据权利要求5所述的光学模组，其特征在于，所述支撑部自所述遮光部件的边缘向远离所述LED光源的方向延伸而成。
  7. 根据权利要求1所述的光学模组，其特征在于，所述透镜为双凸透镜。
  8. 根据权利要求1所述的光学模组，其特征在于，所述透镜为平凸透 镜。
  9. 根据权利要求1所述的光学模组，其特征在于，所述LED光源为COB光源。
  10. 一种灯具，其特征在于，所述灯具包括如权利要求1-9中任意一项所述的光学模组。
PCT/CN2014/089408 2014-06-26 2014-10-24 一种灯具及其光学模组 Ceased WO2015196671A1 (zh)

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