Assembled uniform area light source
A surface light source and light source technology, applied in optics, optical components, nonlinear optics, etc., can solve problems such as unfavorable practicality, difficulty in uniform light emission, and reduced system efficiency
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[0049]Example 1
[0050] In the surface light source based on the assembling of light-emitting diodes of embodiment 1, the surface light source module includes a homogenization-collimation mechanism, that is, a homogenization-collimation lens 91, such as figure 2 Shown. In this embodiment, the homogenization mechanism and the collimation mechanism are integrated, that is, the homogenization-collimation lens 91 is used to replace the functions of the homogenization mechanism and the collimation mechanism.
[0051] figure 2 It is a cross-sectional view and light path diagram of this surface light source module. The light emitting diode light source 93 is packaged with a lens 92. The light emitted from the light-emitting diode light source 93 is refracted once by the lens 92 and then enters the homogenizing-collimating lens 91. The curved surface 94 makes the light with a relatively small angle with the central axis 90 uniformly distributed on the spherical surface 95 and collimat...
Example Embodiment
[0054] Example 2
[0055] In the surface light source based on the assembling of light-emitting diodes of the second embodiment, the surface light source module is another homogenization-collimation mechanism, that is, homogenization-collimation lens groups 120 and 122, such as Figure 6 Shown. Here, the homogenization-collimating lens groups 120 and 122 replace the functions of the homogenization mechanism and the collimation mechanism. The light emitted from the light-emitting diode light source 121 undergoes a series of refractions and reflections on the surfaces of the lens groups 120 and 122, and irradiates uniformly and substantially collimated onto the light exit plane 123. This homogenization-collimation mechanism has a different form from that of Embodiment 1, but the working principle is similar, so it will not be repeated here.
[0056] The surface light source assembled by the surface light source module based on the light-emitting diode of embodiment 2, the top view o...
Example Embodiment
[0057] Example 3
[0058] Figure 8 It is a cross-sectional view and an optical path diagram of the surface light source module of Embodiment 3.
[0059] The homogenization mechanism is realized by using a homogenization lens 23. The spherical lens 22 functions to encapsulate the LED light source 20. The function of the homogenizing lens 23 is to refract the light emitted by the light-emitting diode light source 20 by the spherical lens 22 and then redirect it. After the homogenization lens 23 undergoes refraction or a series of refraction and total reflection, it is in the surface light source module. An approximately uniform illuminance is generated on the light exit plane 12, even if the light is uniformly distributed on the light exit plane 12. In this embodiment, only one light-emitting diode light source 20 is used, which is just for the convenience of description and does not limit the possibility of using multiple light-emitting diode light sources.
[0060] The collimati...
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