Method and device for light coupling and light transmission loss prevention of LED lamps
A LED lamp bead and optical coupling technology, applied in the field of lighting optics, can solve the problems of increasing complexity and difficulty, increasing the proportion of manufacturing costs and labor costs, and achieving the effect of improving light transmittance
Active Publication Date: 2015-12-23
海宁经开产业园区开发建设有限公司
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Problems solved by technology
In order to improve the versatility of the LED condensing lens, there are also n single condensing lenses to form an nW high-power LED projection lamp. The power of the LED projection lamp is adjusted by the number of light outlets of the lamp, but the complexity and difficulty of assembly are greatly increased. Manufacturing The proportion of labor costs in the cost has increased
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[0032] The present invention is described below in conjunction with accompanying drawing.
[0033] Computing theory and derivation thereof on the basis of the present invention:
[0034] attached figure 1 The n=1.0 and n'=1.5 transparent medium interface reflectance curves cited and based on the present invention, the material is taken from the figure in "Optics" (People's Education Press, 1978.9 first edition) edited by Guang and Zhan Yuanling of the mother country 12-13. Curve Ⅰ, curve Ⅱ, and curve Ⅲ in the figure respectively correspond to: the reflectivity Rp parallel to the incident surface vibration (polarized light), the reflectivity Rs perpendicular to the incident surface vibration (polarized light) and the reflectivity R of natural light, the vertical axis Represents the reflectivity R, and the horizontal axis is the incident angle i. Usual unpolarized light (natural light) corresponds to curve III. Depend on figure 1 It can be seen that the reflectivity R is al...
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The invention relates to a method and a device for light coupling and light conduction loss prevention of an LED (Light-emitting Diode) luminaire. The method is characterized in that a light coupling agent is added to a gap between an LED lamp bead and a semi-concave sphere of an LED condensing lens, and a refractive index of the light coupling agent approximates to or even exceeds that of a light-emitting packaging medium of the LED lamp bead. According to the method and the device, a material is easy to obtain; a technology is mature; implementation is convenient; a realization mode is diversified; the cost is low; an effect of improving the light-emitting efficiency of the LED luminaire is significant; and the method and the device meet requirements of green illumination, energy conservation and emission reduction.
Description
technical field [0001] The invention belongs to the field of lighting optics, and relates to LED lamps and equipment, in particular to a method and a device for optical coupling and preventing light transmission loss of LED lamps. Background technique [0002] LED has become an important lighting source because of its high luminous efficiency. However, LED is a point light source, and its package is very different from that of an incandescent lamp. In order to effectively extract the light, the LED lamp beads used for the LED projection lamp and the matching special optical collection-concentrating device with a concave spherical shape effectively collect the high-power LED light emitted to the four directions, and then pass through the optical concentrating device. Refraction and reflection, exit at a small angle, project to a small area, the illumination is uneven, the brightness of the light-emitting surface of the lamp is too high, resulting in glare, and the LED projec...
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IPC IPC(8): F21V5/00F21V5/04F21V7/22
Inventor 胡建人
Owner 海宁经开产业园区开发建设有限公司