CN203478099U - LED illuminating lens - Google Patents
LED illuminating lens Download PDFInfo
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- CN203478099U CN203478099U CN201320613683.9U CN201320613683U CN203478099U CN 203478099 U CN203478099 U CN 203478099U CN 201320613683 U CN201320613683 U CN 201320613683U CN 203478099 U CN203478099 U CN 203478099U
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Abstract
The utility model relates to an LED illuminating lens. The technical problems that in the prior art, an LED illuminating lens is large in overall thickness, so that cost is high and the design freedom degree is low are solved. The LED illuminating lens comprises a lens body which is provided with a front incident plane, side incident planes, a total reflection surface and an emergent plane. A light source incident hole is formed in the bottom of the lens body by defining the front incident plane and the side incident planes. A light control hole is formed in the front incident plane and concaved toward the emergent plane. Transition faces are arranged at the top end of the front incident plane and the top ends of the side incident planes. The LED illuminating lens has the advantages that the overall thickness of the lens can be reduced so that processing and manufacturing cost can be reduced, and the design freedom degree can be increased; the transition faces effectively control light beams through total reflection, the total-reflection light beams can be effectively restrained, and the utilization rate of light energy can be improved. The LED illuminating lens is suitable for the field of LED illuminating.
Description
Technical field
The utility model relates to a kind of LED illuminating lens.
Background technology
As depicted in figs. 1 and 2, existing LED illuminating lens comprises the lens with the plane of incidence, fully reflecting surface 3 and the exit facet 4 that are comprised of normal incidence face 1 and the side plane of incidence 2, and lens bottom is provided with by normal incidence face 1 and the side plane of incidence 2 and enters perforation 5 around the light source forming.Specifically the fully reflecting surface 3 of the LED illuminating lens in Fig. 2 is spliced successively by several reflective scales.In existing LED illuminating lens, light source 6 is placed in light source and enters perforation 5, and its light path traveling process is as follows: the light by light source 6 outgoing incides respectively on normal incidence face 1 and the side plane of incidence 2, by the light beam of normal incidence face 1 incident, directly from exit facet 4, is shone out; By the side plane of incidence 2, be incident to the light beam on fully reflecting surface 3, through reflection after by exit facet 4 outgoing, in this light path, need to guarantee that many as far as possible light arrives fully reflecting surface 3 after 2 refractions of the side plane of incidence, for this reason, between normal incidence face 1 and exit facet 4, there is larger spacing, and cause lens whole height larger, the integral thickness of lens is larger, and the integral thickness of lens is its radial height, therefore, also just cause the radial height of lens larger; In addition, also have part to incide the wide-angle light beam on exit facet 4, can carry out total reflection at exit facet 4, cause the waste of luminous energy.In sum, existing LED illuminating lens, because lens are thicker, increases the cost of processing and making; And because there is more total reflection light, cause the efficiency of light energy utilization lower.
Utility model content
Technical problem to be solved in the utility model is to overcome the integral thickness of LED illuminating lens in prior art compared with causing the shortcoming that cost is high, design freedom is low greatly, and a kind of LED illuminating lens is provided.
The utility model solves the technical scheme that its technical problem adopts: LED illuminating lens, comprise there is normal incidence face, the lens of the side plane of incidence, fully reflecting surface and exit facet, lens bottom is provided with by normal incidence face and the side plane of incidence and enters perforation around the light source forming, on normal incidence face, be provided with the recessed control unthreaded hole to exit facet, the top of normal incidence face and the side plane of incidence is provided with transition face.
Lens bottoms is provided with by normal incidence face and the side plane of incidence and enters perforation around the light source forming, known, the top of the side plane of incidence be on the side plane of incidence away from light source enters perforation near one end of exit facet.Transition face can make light beam form total reflection on this face.
Concrete, described normal incidence face and the side plane of incidence form 88 °～90 ° angles.
Concrete, the top of the described side plane of incidence is greater than normal incidence face to the distance of lens bottom to the distance of lens bottom.
Further, described transition face is combined by several transition face scales.
Preferably, described transition face scale is curved surface, and the curvature between adjacent two transition face scales is discontinuous.
Further, to enter perforation coaxial with lens for described light source.
Further, described control unthreaded hole is coaxial with lens.
Further, control unthreaded hole is by controlling the light positive plane of incidence and the control light side plane of incidence around forming, and the described control light positive plane of incidence is coaxial with normal incidence face.
Preferably, described fully reflecting surface is combined by several scales.Preferably, described scale face shape is curved surface, and the curvature between adjacent two scales is discontinuous.
The beneficial effects of the utility model are: can reduce lens integral thickness, and to reduce the cost of processing and manufacturing, and the Expanding design free degree.In addition, can effectively suppress total reflection light beam, improve the efficiency of light energy utilization.The utility model is applicable to LED lighting field.
Accompanying drawing explanation
Fig. 1 is a kind of LED illuminating lens light path schematic diagram of prior art;
Fig. 2 is the another kind of LED illuminating lens light path schematic diagram of prior art;
Fig. 3 is the structural representation of the utility model embodiment 1;
Fig. 4 is the structural representation of the utility model embodiment 2;
Fig. 5 is the structural representation of the utility model embodiment 3;
Wherein, 1 is normal incidence face, and 2 is the side plane of incidence, and 3 is fully reflecting surface, and 4 is exit facet, and 5 for light source enters perforation, and 6 is light source, and 7 is control unthreaded hole, and 71 is the control light positive plane of incidence, and 72 is the control light side plane of incidence, and 8 is transition face.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
LED illuminating lens of the present utility model, comprise there is normal incidence face 1, the lens of the side plane of incidence 2, fully reflecting surface 3 and exit facet 4, lens bottom is provided with by normal incidence face 1 and the side plane of incidence 2 and enters perforation 5 around the light source forming, on normal incidence face 1, be provided with the recessed control unthreaded hole 7 to exit facet 4, normal incidence face 1 is provided with transition face 8 with the top of the side plane of incidence 2.
At original lens, control separately on the basis of light, be designed with again 7 pairs of lens of control unthreaded hole and carry out two secondary control light, transition face 8 can effectively be controlled the angle of total reflection of light beam, avoids light beam in exit facet 4 places generation total reflection, to cause the waste of luminous energy, improves the efficiency of light energy utilization.Meanwhile, can effectively reduce the thickness of lens, reduce the whole height of lens, reduce material cost.
In actual use, light source 6 should be able to be placed on light source and enter in perforation 5, and it is little that the meaning between the lines is that the size of light source 6 need to enter perforation 5 than light source.
As shown in Figure 3, transition face 8 in this example in this example is to be combined by several transition face scales, this face is that transition face scale by scale structure forms, described transition face scale is curved surface, curvature between adjacent two transition face scales is discontinuous, to improve homogenizer degree, reduce total reflection light beam, in order to avoid waste luminous energy.
Fully reflecting surface 3 is combined by several scales, and described scale face shape is curved surface, and the curvature between adjacent two scales is discontinuous, effectively reduces the total reflectivity of emergent light.Described several scales rotate to form around the axis of lens the scale endless belt that the some groups of axis directions around lens are arranged at fully reflecting surface, and each scale shape in scale endless belt in same group of scale endless belt is identical, can improve the outgoing beam uniformity, improve human eye comfort level.
Exit facet 4 can adopt curved surface, can carry out reasonable Arrangement to lens arrangement, and effectively improves center illumination.
It is coaxial with lens that light source enters perforation 5, and light source enters the middle position that perforation 5 is positioned at lens bottom surface.In addition, control unthreaded hole 7 is coaxial with lens, and showing to control unthreaded hole 7 and light source, to enter perforation 5 coaxial, homogenizer, and minimizing reverberation, the raising efficiency of light energy utilization.
Described control unthreaded hole 7 is comprised of the control light positive plane of incidence 71 and the control light side plane of incidence 72.In general design, the control light positive plane of incidence 71 is coaxial with normal incidence face 1, can effectively improve the center illumination of lens, improves the efficiency of light energy utilization.The control light positive plane of incidence 71 in this example is plane, can, according to the outgoing demand of actual light beam, be designed to on-plane surface in addition.
Because control unthreaded hole 7 is to arrange on normal incidence face 1, larger if control unthreaded hole 7 arranges, remaining of normal incidence face 1 very little; If it is less that control unthreaded hole 7 arranges, remaining of normal incidence face 1 larger.In this example, in order to make more light beam to carry out light beam modulation by control unthreaded hole 7, therefore, will control unthreaded hole 7 and arrange greatlyr, so normal incidence face 1 remaining less in figure.
The meaning between the lines is, normal incidence face 1, the side plane of incidence 2, transition face 8, the control light positive plane of incidence 71 and the control light side plane of incidence 72 form into perforation, and this enters perforation and has dimming function.
Under perfect condition, the side plane of incidence 2 passes through exit facet 4 outgoing from lens perpendicular to normal incidence face 1 to guarantee light beam as much as possible, with this, improves the efficiency of light energy utilization.Yet because the manufacture of LED lens adopts hot Shooting Technique, realize and be completely vertically unfavorable for industrial production, general and vertical line has the drafting angle of 0.5 °～2 °, therefore described normal incidence face 1 forms 88 °～90 ° angles with the side plane of incidence 2.
The top of the described side plane of incidence 2 is greater than normal incidence face 1 to the distance of lens bottom to the distance of lens bottom.By this design, can effectively reduce the high angle scattered light through exit facet 4, thereby reduce the luminous energy loss that lens itself cause the uptake of luminous energy and total reflection, the raising efficiency of light energy utilization.Meanwhile, can effectively reduce the thickness of lens, reduce the whole height of lens, reduce material cost.In addition, also can the Expanding design free degree, the aesthetic feeling on enhancing sense organ, reduction processing and the cost of making.
As shown in Figure 4, this routine lens fully reflecting surface 3 is cambered surface, and the control light side plane of incidence 72 is basically perpendicular to normal incidence face 1, to guarantee that light beam as much as possible, by exit facet 4 outgoing from lens, improves the efficiency of light energy utilization with this.In like manner, under perfect condition, the control light side plane of incidence 72 is perpendicular to normal incidence face 1.Yet because the manufacture of LED lens adopts hot Shooting Technique, realize and be completely vertically unfavorable for industrial production, general and vertical line has the angle of 0.5 °～2 °, so described in, normal incidence face 1 forms 88 °～90 ° angles with the side plane of incidence 72.
For suitable with the light beam of fully reflecting surface 3 reflections, the design of transition face 8 is also comparatively simple, is the plane being connected, effectively to reduce the high angle scattered light through exit facet 4, thereby reduce the luminous energy loss that lens itself cause the uptake of luminous energy and total reflection, the raising efficiency of light energy utilization.Meanwhile, can effectively reduce the thickness of lens, reduce the whole height of lens, reduce material cost.In this example, the control light positive plane of incidence 71 is designed to sphere, can improve center illumination.
In addition, the center of the exit facet 4 in this example adopts optically focused curved surface, can improve largely center illumination.
As shown in Figure 5, the control light side plane of incidence 72 is basically perpendicular to normal incidence face 1, to guarantee that light beam as much as possible, by exit facet 4 outgoing from lens, improves the efficiency of light energy utilization with this.Under perfect condition, the control light side plane of incidence 72 is perpendicular to normal incidence face 1.Yet because the manufacture of LED lens adopts hot Shooting Technique, realize and be completely vertically unfavorable for industrial production, general and vertical line has the angle of 0.5 °～2 °, so described in, normal incidence face 1 forms 88 °～90 ° angles with the side plane of incidence 2.
Fully reflecting surface 3 is combined by several scales, and described scale face shape is curved surface, and the curvature between adjacent two scales is discontinuous, effectively reduces the total reflectivity of emergent light.Described several scales rotate to form around the axis of lens the scale endless belt that the some groups of axis directions around lens are arranged at fully reflecting surface, and each scale shape in scale endless belt in same group of scale endless belt is identical, can improve the outgoing beam uniformity, improve human eye comfort level.Consider the angle of divergence of outgoing beam, the flexibility of the scale in this example is less.
For suitable with the light beam of fully reflecting surface 3 reflections, the design of transition face 8 also adopts and the similar catoptric arrangement of fully reflecting surface, for the scale curved surface being connected, effectively to reduce the high angle scattered light through exit facet 4, thereby reduce the luminous energy loss that lens itself cause the uptake of luminous energy and total reflection, the raising efficiency of light energy utilization.Meanwhile, can effectively reduce the thickness of lens, reduce the whole height of lens, reduce material cost.
In addition, the center of the exit facet 4 in this example adopts the even light design of compound eye, can improve the uniformity of outgoing beam.
Claims (10)
1.LED illuminating lens, comprise there is normal incidence face (1), the lens of the side plane of incidence (2), fully reflecting surface (3) and exit facet (4), lens bottom is provided with by normal incidence face (1) and the side plane of incidence (2) and enters perforation (5) around the light source forming, it is characterized in that, on normal incidence face (1), be provided with the recessed control unthreaded hole (7) to exit facet (4), normal incidence face (1) is provided with transition face (8) with the top of the side plane of incidence (2).
2. LED illuminating lens as claimed in claim 1, is characterized in that, described normal incidence face (1) forms 88 °～90 ° angles with the side plane of incidence (2).
3. LED illuminating lens as claimed in claim 1 or 2, is characterized in that, the top of the described side plane of incidence (2) is greater than normal incidence face (1) to the distance of lens bottom to the distance of lens bottom.
4. LED illuminating lens as claimed in claim 1, is characterized in that, described transition face (8) is combined by several transition face scales.
5. LED illuminating lens as claimed in claim 4, is characterized in that, described transition face scale is curved surface, and the curvature between adjacent two transition face scales is discontinuous.
6. LED illuminating lens as claimed in claim 1, is characterized in that, it is coaxial with lens that described light source enters perforation (5).
7. LED illuminating lens as claimed in claim 6, is characterized in that, described control unthreaded hole (7) is coaxial with lens.
8. LED illuminating lens as claimed in claim 1, is characterized in that, described control unthreaded hole (7) is by the control light positive plane of incidence (71) and control the light side plane of incidence (72) around forming, and the control light positive plane of incidence (71) is coaxial with normal incidence face (1).
9. LED illuminating lens as claimed in claim 1, is characterized in that, described fully reflecting surface (3) is combined by several scales.
10. LED illuminating lens as claimed in claim 9, is characterized in that, the face shape of described scale is curved surface, and the curvature between adjacent two scales is discontinuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613683.9U CN203478099U (en) | 2013-09-30 | 2013-09-30 | LED illuminating lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613683.9U CN203478099U (en) | 2013-09-30 | 2013-09-30 | LED illuminating lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203478099U true CN203478099U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320613683.9U Ceased CN203478099U (en) | 2013-09-30 | 2013-09-30 | LED illuminating lens |
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| Country | Link |
|---|---|
| CN (1) | CN203478099U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465627A (en) * | 2015-12-30 | 2016-04-06 | 欧普照明股份有限公司 | Light beam control device and light-emitting device |
| CN108571711A (en) * | 2018-05-22 | 2018-09-25 | 成都欧盛光电科技有限公司 | anti-glare lens |
| CN113075833A (en) * | 2021-04-09 | 2021-07-06 | 杭州海康威视数字技术股份有限公司 | Lens assembly |
-
2013
- 2013-09-30 CN CN201320613683.9U patent/CN203478099U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465627A (en) * | 2015-12-30 | 2016-04-06 | 欧普照明股份有限公司 | Light beam control device and light-emitting device |
| CN105465627B (en) * | 2015-12-30 | 2024-03-22 | 欧普照明股份有限公司 | Beam control device and light emitting device |
| CN108571711A (en) * | 2018-05-22 | 2018-09-25 | 成都欧盛光电科技有限公司 | anti-glare lens |
| CN113075833A (en) * | 2021-04-09 | 2021-07-06 | 杭州海康威视数字技术股份有限公司 | Lens assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20220110 Decision number of declaring invalidation: 53475 Granted publication date: 20140312 |