CN204328881U - A kind of optical lens for LED lamp and LED lamp - Google Patents
A kind of optical lens for LED lamp and LED lamp Download PDFInfo
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- CN204328881U CN204328881U CN201420854321.3U CN201420854321U CN204328881U CN 204328881 U CN204328881 U CN 204328881U CN 201420854321 U CN201420854321 U CN 201420854321U CN 204328881 U CN204328881 U CN 204328881U
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- led lamp
- optical lens
- light guide
- guide section
- illuminating part
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Abstract
The utility model discloses a kind of optical lens for LED lamp and LED lamp, optical lens comprises light guide section, illuminating part, described light guide section has the cavity holding plurality of LEDs lamp pearl, described light guide section has relative first surface and second surface, described first surface and second surface are the fully reflecting surface that the light total internal reflection that the LED lamp bead be contained in described cavity can be sent conducts to described illuminating part, and described illuminating part has exit facet and sent by the light that described light guide section conducts; Compared with traditional optical lens, the light guide section of the optical lens that the utility model provides conducts to illuminating part the light that LED lamp bead sends, different optical requirement is met by the change height of light guide section and the curved-surface structure of illuminating part, structure is simple, packaging technology requires low, largely overcome traditional optical lens for meeting optical demands, the defect that the required precision of assembling is high, there is practical significance.
Description
Technical field
The utility model relates to optical field, particularly relates to a kind of optical lens for LED lamp and LED lamp.
Background technology
LED has life-span long, environmental protection and the superior characteristic such as energy-conservation, at present, adopts LED to obtain applying energetically as lighting source.But the feature due to the luminescence of single LEDs lambert's type own cannot meet the demand that actual illumination distributes to lamp distribution, after needing that secondary optics process is carried out to plurality of LEDs employing lens, instructions for use could be met.The lens that current LED lamp uses carry out secondary light-distribution design mostly based on single LEDs, the greatest drawback of these class methods is: the lighting angle of LED lamp is little (being less than 150 degree), can not compare with the wide light distribution angle of traditional incandescent lamp and electricity-saving lamp, the demand of actual use cannot be met.
Therefore, those skilled in the art is devoted to a kind of novel optical lens for LED lamp wide-angle light distribution requirements of exploitation and LED lamp.
In prior art, optical lens is for meeting optical demands, and the required precision of assembling is high, installs complicated, and compared with prior art, the LED lamp structure that the utility model provides is simple, and packaging technology requires low, and lighting angle can meet the demand of practical application completely.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Utility model content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of secondary optical lens and LED lamp of the wide-angle luminous intensity distribution for LED lamp, an optical lens is used to carry out optical treatment to all LED, and the lighting angle of LED lamp is enlarged markedly, with practical requirement.
For achieving the above object, the utility model provides a kind of optical lens for LED lamp, comprise light guide section, illuminating part, described light guide section has the cavity holding plurality of LEDs lamp pearl, described light guide section has relative first surface and second surface, described first surface and second surface are the fully reflecting surface that the light total internal reflection that the LED lamp bead be contained in described cavity can be sent conducts to described illuminating part, and described illuminating part has exit facet and sent by the light that described light guide section conducts.Described optical lens is solid lens.
Described light guide section and described illuminating part are integrated formation.
Further, the surface of described cavity is the concave curved surface of spherical structure.。
Further, the described first surface of described light guide section and the tubular structure of second surface formation uniform wall thickness.
Further, the first surface of described tubular structure and second surface are coaxial surface of revolution.
Further, described illuminating part has the madial wall relative with exit facet, and described madial wall is the curved surface of continuously smooth.
Further, the roughness Ra value of described madial wall is less than 0.06 micron.
Further, the curvature of curved surface of described madial wall is distributed between 0.0267 and 0.0517.
Further, described illuminating part also has the 3rd relative surface, the 4th surface, described 3rd surface and described 4th surface be arranged in parallel, between described 3rd surface and described light guide section, there is the first angle being less than or equal to 90 degree, between described exit facet and described 3rd surface, there is the second angle being less than 90 degree
Further, described exit facet is the surfaces of revolution coaxial with the first surface of described light guide section.
Further, the material of described optical lens is optical-grade plastic PC or PMMA.
Further, all surface of described optical lens is bright glassy surface.
Further, the minute surface degree of all surface of described optical lens is all less than 0.06 micron.
The utility model additionally provides a kind of LED lamp, comprise plurality of LEDs lamp pearl and above-mentioned optical lens, described LED lamp bead is fixed on lamp plate, LED lamp bead is provided with in the cavity in described optical lens light guiding portion, be arranged at light that the LED lamp bead in the cavity in described optical lens light guiding portion sends conducts to described optical lens illuminating part through the light guide section of described optical lens, and send through the illuminating part of described optical lens.
Further, there is gap between the LED lamp bead in the cavity in described optical lens light guiding portion and the surface of described cavity.
Further, the LED lamp bead in the cavity in described optical lens light guiding portion is positioned at the middle position of described cavity.
Further, the LED lamp bead in the cavity in described optical lens light guiding portion is a circle or multi-turn.
Further, the LED lamp bead in the cavity in described optical lens light guiding portion is circumferentially uniformly distributed.
Further, the largest circumference radius size of the LED lamp bead arrangement in the cavity in described optical lens light guiding portion is consistent with the height of the light guide section of described optical lens.
Further, also LED lamp bead is provided with in the tubular structure in described optical lens light guiding portion.
Further, the LED lamp bead be arranged at described in the tubular structure in described optical lens light guiding portion is uniform circular arrangement.
The optical lens for LED lamp that the utility model provides and LED lamp, the light of plurality of LEDs lamp pearl can be processed simultaneously, overcome the defect that light that traditional optical lens can only send a LED lamp pearl processes, easy to use, there is very high Practical significance; The light guide section of optical lens uses the structure of surface of revolution, light LED lamp bead sent conducts to the illuminating part on optical lens top, luminous by the lighting angle of setting by illuminating part again, compared with traditional optical lens, the optical lens that the utility model provides meets different optical requirement by the curved-surface structure of the height and top luminous zone that change light guide section curved surface, maximum lighting angle can reach 300 degree, is less than 150 degree defines striking contrast with the lighting angle of traditional optical lens.
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED lamp of a preferred embodiment of the present utility model;
Fig. 2 is the schematic diagram under the LED lamp heeling condition in Fig. 1;
Fig. 3 is the structural representation of the lamp plate of the LED lamp of a preferred embodiment of the present utility model;
Fig. 4 is the top view of the LED lamp of a preferred embodiment of the present utility model;
Fig. 5 is the sectional view of the LED lamp of a preferred embodiment of the present utility model;
Fig. 6 is the principle of luminosity schematic diagram of the LED lamp of a preferred embodiment of the present utility model.
Fig. 7 is the schematic diagram of the illuminating part madial wall of the LED lamp of a preferred embodiment of the present utility model.
In accompanying drawing, 10 represent lamp plate, 20 represent optical lens, 30 represent LED lamp bead, the light guide section of 40 expression optical lenses, the first surface of 41 expression light guide sections, the second surface of 42 expression light guide sections, the illuminating part of 50 expression optical lenses, 53 represent that the 3rd of illuminating part the is surperficial, 54 represent that the 4th of illuminating part the is surperficial, the exit facet of 55 expression illuminating parts, the madial wall of 56 expression illuminating parts, the surface of the cavity of the light guide section of 60 expression optical lenses, α represents the angle between exit facet and the 3rd surface, β represents the angle between the 3rd surface and light guide section, h represents the height of light guide section.
Detailed description of the invention
Fig. 1 and Fig. 2 shows the structural representation of the LED lamp of the utility model preferred embodiment, and Fig. 3 is the structural representation of lamp plate, and Fig. 4 is the top view of LED lamp.Fig. 5 gives the sectional view of LED lamp.
Present embodiments provide a kind of LED lamp, comprise LED lamp bead 30 and optical lens 20, LED lamp bead 30 is fixed on lamp plate 10, and there is plurality of LEDs lamp pearl to be arranged in the container cavity of optical lens 20, wherein optical lens 20 comprises light guide section 40, illuminating part 50, light guide section 40 has the cavity holding plurality of LEDs lamp pearl, light guide section has relative first surface 41 and second surface 42, the light total internal reflection that the LED lamp bead be contained in cavity can send by first surface 41 and second surface 42 conducts to illuminating part 50, illuminating part 50 has exit facet 55 and is sent by the light that light guide section conducts.
Fig. 6 is the principle of luminosity schematic diagram of the LED lamp of a preferred embodiment of the present utility model, light guide section 40 has the cavity holding plurality of LEDs lamp pearl, light guide section has relative first surface 41 and second surface 42, first surface 41 and second surface 42 are the fully reflecting surface that the light total internal reflection that the LED lamp bead be contained in described cavity can be sent conducts to illuminating part, and illuminating part has exit facet and sent by the light that described light guide section conducts.
The housing surface 60 of light guide section 40 is the concave curved surface of spherical structure.LED lamp bead in the cavity in optical lens light guiding portion is positioned at the middle position of cavity, and and there is gap between the surface 60 of cavity.In a preferred embodiment of the invention, the LED lamp bead in cavity is circumferentially uniformly distributed.
Light guide section 40 is the tubular structure of uniform wall thickness.First surface 41 and second surface 42 are coaxial surface of revolution.The radius of a circle size that LED lamp bead in the height of the light guide section of optical lens and the cavity in optical lens light guiding portion arranges is suitable.
Illuminating part has the 3rd relative surface 53, the 4th surface 54 and the madial wall 56 relative with exit facet 55,3rd surface 53 and the 4th surface 54 be arranged in parallel, between 3rd surface 53 and light guide section 40, there is the first angle β being less than 90 degree, there is between exit facet 55 and the 3rd surface 53 the second angle α being less than 90 degree.Madial wall 56 is the curved surface of continuously smooth, and surface roughness is less than 0.06 micron, and curvature of curved surface is distributed between 0.0267 and 0.0517.
Fig. 7 shows the illuminating part madial wall of the LED lamp of the present embodiment.In figure, the curvature of ABCDE5 point is respectively 0.0272,0.0370,0.0482,0.0517,0.0267.
As shown in Figure 3 and Figure 4, also LED lamp bead can be provided with in the tubular structure in optical lens light guiding portion.
The LED lamp that the utility model provides, the light that LED lamp bead sends, is inputted by the surface transmission of the cavity of optical lens, is conducted to the illuminating part on top by middle light guide section total reflection, then presses the designing requirement luminescence of lighting angle by illuminating part.
Plurality of LEDs lamp pearl is circumferentially evenly distributed on the middle position in optical lens light guiding portion cavity, compared with traditional optical lens, and the light that the utility model adopts the whole LED lamp bead of an optical lens process to send.
Optical lens light guiding portion uses the structure of surface of revolution, light LED lamp bead sent conducts to the illuminating part on optical lens top, luminous by the requirement of setting by illuminating part again, compared with traditional optical lens, the light guide section of the optical lens that the utility model provides conducts to illuminating part the light that LED lamp bead sends, different optical requirement is met by the change height of light guide section and the curved-surface structure of illuminating part, maximum lighting angle can reach 300 °, and the lighting angle of traditional optical lens is less than 150 °.
The lens that the utility model provides carry out globality luminous intensity distribution to plurality of LEDs, and lens sizes is larger, and the propagation path of light is distant; Select the PMMA material injection of optical-grade plastic that light transmittance is high or high transmission rate shaping further, effectively can improve the optical efficiency of secondary lens, reduce light losing, empirical tests, the efficiency of lens can reach more than 85%.
The LED lamp structure that the utility model provides is simple, packaging technology requires low, largely overcome traditional LED light lens cannot carry out overall wide-angle luminous intensity distribution optical demands and the exigent defect of assembly precision to multiple LED, there is larger actual application value.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that the ordinary skill of this area just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (10)
1. the optical lens for LED lamp, it is characterized in that, comprise light guide section, illuminating part, described light guide section has the cavity holding plurality of LEDs lamp pearl, described light guide section has relative first surface and second surface, described first surface and second surface are the fully reflecting surface that the light total internal reflection that the LED lamp bead be contained in described cavity can be sent conducts to described illuminating part, and described illuminating part has exit facet and sent by the light that described light guide section conducts.
2., as claimed in claim 1 for the optical lens of LED lamp, it is characterized in that, the surface of described cavity is the concave curved surface of spherical structure.
3. as claimed in claim 1 for the optical lens of LED lamp, it is characterized in that, the described first surface of described light guide section and second surface form the tubular structure of uniform wall thickness.
4., as claimed in claim 3 for the optical lens of LED lamp, it is characterized in that, described first surface and second surface are coaxial surface of revolution.
5., as claimed in claim 1 for the optical lens of LED lamp, it is characterized in that, described illuminating part has the madial wall relative with exit facet, and described madial wall is the curved surface of continuously smooth.
6., as claimed in claim 5 for the optical lens of LED lamp, it is characterized in that, the roughness Ra value of described madial wall is less than 0.06 micron.
7., as claimed in claim 6 for the optical lens of LED lamp, it is characterized in that, the curvature of curved surface of described madial wall is distributed between 0.0267 and 0.0517.
8. the optical lens for LED lamp as described in any one of claim 1 or 7, it is characterized in that, described illuminating part also has the 3rd relative surface, the 4th surface, described 3rd surface and described 4th surface be arranged in parallel, between described 3rd surface and described light guide section, there is the first angle being less than or equal to 90 degree, between described exit facet and described 3rd surface, there is the second angle being less than 90 degree.
9., as claimed in claim 1 for the optical lens of LED lamp, it is characterized in that, the material of described optical lens is optical-grade plastic PC or PMMA.
10., as claimed in claim 1 for the optical lens of LED lamp, it is characterized in that, all surface of described optical lens is bright glassy surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854321.3U CN204328881U (en) | 2014-09-30 | 2014-12-25 | A kind of optical lens for LED lamp and LED lamp |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573267 | 2014-09-30 | ||
| CN2014205732675 | 2014-09-30 | ||
| CN201420854321.3U CN204328881U (en) | 2014-09-30 | 2014-12-25 | A kind of optical lens for LED lamp and LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204328881U true CN204328881U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420854321.3U Active CN204328881U (en) | 2014-09-30 | 2014-12-25 | A kind of optical lens for LED lamp and LED lamp |
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| CN (1) | CN204328881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534404A (en) * | 2014-09-30 | 2015-04-22 | 上海南华机电有限公司 | Optical lens for LED lamp and LED lamp |
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2014
- 2014-12-25 CN CN201420854321.3U patent/CN204328881U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534404A (en) * | 2014-09-30 | 2015-04-22 | 上海南华机电有限公司 | Optical lens for LED lamp and LED lamp |
| CN104534404B (en) * | 2014-09-30 | 2018-05-18 | 上海南华机电有限公司 | A kind of optical lens and LED lamp for LED lamp |
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