CN101262034A

CN101262034A - Ellipse LED

Info

Publication number: CN101262034A
Application number: CNA2007100873031A
Authority: CN
Inventors: 邢陈震仑; 洪荣豪
Original assignee: Prolight Opto Technology Corp
Current assignee: Prolight Opto Technology Corp
Priority date: 2007-03-09
Filing date: 2007-03-09
Publication date: 2008-09-10

Abstract

The invention discloses an elliptical light emitting diode with the power of at least 1 watt, which comprises a chip body and a lens of the light emitting diode. The lens of the light emitting diode is covered and arranged on the chip body and provided with a transmission part. The transmission part is provided with a long shaft and a short shaft, wherein, the ratio of light forms scattered by the long shaft and the short shaft is more than or equal to 1.5-5.

Description

Ellipse LED

Technical field

The present invention relates to a kind of High Power LED, particularly relate to a kind of ellipse LED that increases illuminance.

Background technology

Existing light-emitting diode (LED) be to borrow LED crystal grain to produce light source, and by the LED lens (Lens) that are located at LED crystal grain periphery, the outside scattering of secondary light source is to reach the result of use of illumination.

With reference to figure 1, be the hemispherical lens (Lens) 101 of first kind of known light-emitting diode utmost point, this is blue reflector kenel (Lambertian Patten).

With reference to figure 2, be the lens (Lens) 102 of the platypelloid type of second kind of known light-emitting diode utmost point.

With reference to figure 3, be the aerofoil profile lens (Lens) 103 of the third known light-emitting diode utmost point.

With reference to figure 4, be the lens (Lens) 104 of the lateral scattering type of the third known light-emitting diode utmost point.

With reference to figure 5, be the lens (Lens) 105 of the solid flower shape of first kind of known light-emitting diode utmost point.

The lens of above-mentioned five kinds of light-emitting diodes (Lens) 101,102,103,104,105, though contour structures is different, but, its common characteristic is, the periphery footpath of lens (Lens) 101,102,103,104,105 is consistent, so, after the energising of LED crystal grain, can borrow these lens (Lens) 101,102,103,104,105 to scatter light source to lining.

Because the lens (Lens) of general light-emitting diode (LED) all are the light shapes that scatter lining, this also is the reason that the irradiating angle of existing light-emitting diode can't be broken through.Thereby, cause in the utilization of lighting apparatus, need cooperate other light shield to make secondary optics again, just can reach the demand light shape of expection.

Summary of the invention

The object of the present invention is to provide a kind of ellipse LED,, reach the purpose of range of exposures of amplification light source so as to not to the light shape of lining, in order to solve existing light-emitting diode to lining light shape, the problem that causes illuminance to be limited to some extent.

To achieve these goals, the invention provides a kind of ellipse LED, include a chip body and a led lens.This led lens is located on this chip body, and has a transmissive portions.This transmissive portions has a major axis and a minor axis, and the light shape ratio that wherein this major axis and minor axis scattered is more than or equal between 1.5 to 5.

Ellipse LED of the present invention, the light shape angle ratio that major axis and minor axis scattered of led lens is set as more than or equal between 1.5 to 5, transmissive portions is in the part of major axis and short-axis direction extension, can project not light shape to serving as a contrast, but also by the major axis part, irradiates light shape is more stretched out,, and the optical efficiency of ellipse LED is significantly promoted with amplification light source irradiation scope.

Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.

Description of drawings

Fig. 1 is the end view of first kind of known led lens;

Fig. 2 is the end view of second kind of known led lens;

Fig. 3 is the end view of the third known led lens;

Fig. 4 is the end view of the 4th kind of known led lens;

Fig. 5 is the end view of the 5th kind of known led lens;

Fig. 6 is the stereogram of the ellipse LED of first embodiment of the invention;

Fig. 7 is the end view of this first embodiment;

Fig. 8 is the opposite side view of this first embodiment;

Fig. 9 is the cutaway view of this led lens of this first embodiment;

Figure 10 is the led lens cutaway view of second embodiment of the invention;

Figure 11 is the led lens cutaway view of third embodiment of the invention;

Figure 12 is the major axis X of ellipse LED of the present invention and the curve chart of its light source irradiation angle of minor axis Y.

Wherein, Reference numeral:

101: lens 102: lens

103: lens 104: lens

105: lens 100: ellipse LED

110: pedestal 120: chip body

130: led lens 130 ': led lens

130 ": led lens 131: transmissive portions

1311: oval cross section 132: horizontal flanges

140: metal terminal

Embodiment

With reference to figure 6, be the stereogram of the first embodiment of the present invention.

With reference to figure 7, be the end view of this first embodiment.

With reference to figure 6 and Fig. 7, the ellipse LED 100 of this first embodiment of the present invention, at least 1 watt of power (W), and include a pedestal 110, a chip body 120, a led lens 130, and two metal terminals 140.

This pedestal 110 is an insulator.

This chip body 120 is a conductor (crystal grain), and carries the end face centre position of being located at this pedestal 110.

This metal terminal 140 is arranged at this pedestal 110 all sides, and is electrically connected with these chip body 120 formations.

Fig. 8 is the opposite side view of this first embodiment.

With reference to figure 6, Fig. 7 and Fig. 8, this led lens 130 is located on this chip body 120.This led lens 130 has a transmissive portions 131, and a ring is located at the horizontal flanges 132 in these transmissive portions 131 outsides.This transmissive portions 131 is a three-dimensional half elliptic, and has an oval cross section 1311.In the present embodiment, oval cross section 1311 is the inner surface of transmissive portions 131 adjacent to this chip body 120.This oval cross section 1311 has a major axis X and a minor axis Y, and wherein the light shape ratio that scattered of this major axis X and minor axis Y is more than or equal between 1.5 to 5.

With reference to figure 9, be the cutaway view of the led lens of the first embodiment of the present invention.

Among this first embodiment, this led lens 130 is the part ducted body.Just, this transmissive portions 131 partly fills up this led lens 130 inside.

With reference to Figure 12, the curve chart of the light shape angle that is scattered for the major axis X and the minor axis Y of ellipse LED of the present invention.

Draw through test, the light shape angle θ that the major axis X of ellipse LED of the present invention is scattered is much larger than the light shape angle θ of minor axis Y.Therefore, be used on the various electronic equipments, the scope of certain extensible irradiation is to promote whole illuminance (Lux).

With reference to Figure 10, be the cutaway view of the led lens 130 ' of the second embodiment of the present invention.

With reference to figure 6, the ellipse LED 100 of this second embodiment of the present invention includes a pedestal 110, a chip body 120 with the first embodiment same structure, and two metal terminals 140.

With reference to Figure 10, the place that this second embodiment is different with first embodiment just is set as solid with this led lens 130 '.Just, this transmissive portions 131 ' fully fills up this led lens 130 ' inside, and the result of use that its expection reaches is all identical with above-mentioned first embodiment, repeats no more.

With reference to Figure 11, be the led lens 130 of the third embodiment of the present invention " cutaway view.

The led lens 130 of the 3rd embodiment " structure also be a kind of part ducted body.Just, this transmissive portions 131 " partly fill up this led lens 130 " inside, the result of use that its expection reaches is all identical with above-mentioned first embodiment, repeats no more.

Through above-mentioned explanation,, be confined to only launch defective to the light shape of lining than known lens (Lens) owing to general light-emitting diode (LED).Ellipse LED of the present invention, can project not light shape so as to major axis X and minor axis Y to serving as a contrast, transmissive portions 131,131 ', 131 " part of extending in major axis X and minor axis Y direction; can project not light shape to lining; but also by major axis X part; irradiates light shape is more stretched out,, and the optical efficiency of ellipse LED is significantly promoted with amplification light source irradiation scope.

Therefore, in the utilization of lighting apparatus, ellipse LED of the present invention need not to cooperate other secondary optics structure, just can self structure reach demand light shape.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. an ellipse LED is characterized in that, includes:

One chip body, at least 1 watt of power; And

One led lens is located on this chip body, and has a transmissive portions; This transmissive portions has a major axis and a minor axis, and the light shape ratio that wherein this major axis and minor axis scattered is more than or equal between 1.5 to 5.

2. ellipse LED according to claim 1 is characterized in that this transmissive portions is three-dimensional half elliptic, and has an oval cross section, and this oval cross section has this major axis and this minor axis.

3. ellipse LED according to claim 1 is characterized in that, this transmissive portions fills up partially is located at this led lens inside.

4. ellipse LED according to claim 1 is characterized in that, this transmissive portions fully fills up is located at this light-emitting diode inside.

5. ellipse LED according to claim 1 is characterized in that, this oval cross section is the inner surface of this transmissive portions adjacent to this chip body.