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Aspherical positive irradiation-angle optical lens and light-emitting diode (LED) component formed by same

A technology of light-emitting diodes and optical lenses, applied in the field of flashlights, can solve the problems of plastic injection deformation, difficult glass molding, and manufacturing difficulties, and achieve the effect of simple shapes

Inactive Publication Date: 2010-01-13
E PIN OPTICAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of the demand for LED primary optical lenses, optical lenses with complex shapes or diffractive surfaces in the prior art have disadvantages such as difficult manufacturing, deformation of plastic injection, difficult molding of glass, or high cost.

Method used

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  • Aspherical positive irradiation-angle optical lens and light-emitting diode (LED) component formed by same
  • Aspherical positive irradiation-angle optical lens and light-emitting diode (LED) component formed by same
  • Aspherical positive irradiation-angle optical lens and light-emitting diode (LED) component formed by same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0065] figure 2 and Figure 6 They are the schematic diagram of the LED assembly using the LED optical lens of the present invention and the polar coordinate relationship diagram of the light intensity distribution and the illumination angle of the first embodiment.

[0066] Table 1 below lists the optical surface R on the light source side of the LED chip 11, sealant 12, and optical lens 13 along the central axis Z from the light source side to the image side 1 and image side optical surface R 2 The radius of curvature R (unit: mm) (the radius of curvature R), the spacing d (unit: mm) (the on-axis surface spacing), the maximum angle 2ω (degree deg) of the light emitted by the LED chip 11, and the optical lens 13 The maximum angle of the emitted light pattern (degrees deg), each refractive index (N d ), each thickness, each Abbe’s number (Abbe’s number) ν d .

[0067] Table 1

[0068]

[0069]

[0070] *Aspherical

[0071] In Table 1, the optical surface (Surf)...

no. 2 example

[0083] figure 2 and Figure 7 They are the schematic diagram of the application of the LED optical lens of the present invention in the LED assembly and the polar coordinate relation diagram of the light intensity distribution and the illumination angle of the second embodiment.

[0084] Table 3 below lists the radius of curvature R of each optical surface along the central axis Z from the light source side to the image side, the distance d, the maximum angle 2ω of the light emitted by the LED chip 11, and the light pattern of the light emitted by the optical lens 13. maximum angle Each refractive index (N d ), each Abbe number ν d . Table 4 shows the various coefficients of the aspheric surface formula (7) of each optical surface.

[0085] table 3

[0086]

[0087] *Aspherical

[0088] Table 4

[0089]

[0090] In this embodiment, the sealant 12 utilizes the refractive index N d1 is 1.527, Abbe's number ν d1 34 transparent optical silica gel filling; optical...

no. 3 example

[0099] figure 2 and Figure 8 They are respectively a schematic diagram of the application of the LED optical lens of the present invention in the LED assembly and a polar coordinate relationship diagram of the light intensity distribution and the illumination angle of the third embodiment.

[0100] Table 5 below lists the curvature radius R of each optical surface from the light source side to the image side along the central axis Z, the distance d, the maximum angle 2ω of the light emitted by the LED chip 11, and the maximum light pattern of the light emitted by the optical lens 13. angle Each refractive index (N d ), each thickness, each Abbe number ν d . Table 6 shows the various coefficients of the aspheric surface formula (7) of each optical surface.

[0101] table 5

[0102]

[0103] *Aspherical

[0104] Table 6

[0105]

[0106] In this embodiment, the sealant 12 utilizes the refractive index N d1 is 1.527, Abbe's number ν d1 34 transparent optical si...

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Abstract

The invention discloses an aspherical positive irradiation-angle optical lens and a light-emitting diode (LED) component formed by the same. The aspherical optical lens is provided with a concave surface on the light source side and a convex surface on the imaging side, and the LED component formed by the aspherical optical lens can focus the light emitted by an LED chip and can form the round light having the positive irradiation angle of more than 72 degrees and less than 108 degrees with uniform strength. Therefore, the light emitted by an LED can be focused into a preset shape by only one aspherical optical lens, and the aspherical positive irradiation-angle optical lens and the LED component formed by the same can achieve the luminous flux ratio of more than 85 percent and can be used for the illumination and the flash lamp of the cell phone or the camera.

Description

technical field [0001] The present invention relates to an aspheric positive angle optical lens and a light-emitting diode component thereof, in particular to an optical lens applied to an LED light source to generate light and a light-emitting diode component formed thereof, which can be applied to LED lighting, mobile phone or camera flash. Background technique [0002] Light-emitting diodes (LEDs) have the advantages of low voltage, low power consumption, and long life, and have been widely used in display (indicator), lighting (illuminator) and other fields. Because LEDs also have the characteristics of pure light color and small size and flat packaging, they have been used in flashlights of mobile phone cameras. However, since the LED chip is a point light source, the light emitted by it has the characteristics of uneven brightness, so researchers have carried out many studies on the aggregation of light, such as shrinking the chip and improving luminous efficiency, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/00
Inventor 施柏源林楷谋廖怡芬
Owner E PIN OPTICAL IND