CN103292249A - Lens used for LED bulb lamp - Google Patents
Lens used for LED bulb lamp Download PDFInfo
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- CN103292249A CN103292249A CN201310123412XA CN201310123412A CN103292249A CN 103292249 A CN103292249 A CN 103292249A CN 201310123412X A CN201310123412X A CN 201310123412XA CN 201310123412 A CN201310123412 A CN 201310123412A CN 103292249 A CN103292249 A CN 103292249A
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- led bulb
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Abstract
The invention discloses a lens used for an LED (light-emitting diode) bulb lamp, which comprises an external lens, wherein the external lens is a curved surface body and comprises an external diffuse transmission surface and an external reflection surface; a first light guide part is formed between the external diffuse transmission surface and the external reflection surface; and the bottom of the first light guide part is arranged above an LED chip in the LED bulb lamp. According to the lens, the external lens is arranged above the LED chip, light rays emitted by the LED chip enter the first light guide part, and then the light rays are subjected to reflection and diffuse transmission under the action of the external reflection surface and the external diffuse transmission surface, so that the light rays are redistributed, and a light angle of the LED bulb lamp is increased; in addition, the semispherical external lens has a lampshade effect, so that light flux output of the bulb lamp can be increased, the optical property is improved, and the cost is saved; an internal lens is adopted, so that a light ray redistribution effect can be improved, and the light angle and the light ray uniformity of the LED bulb lamp can be further increased and improved; and the external lens is divided into an upper lens and a lower lens, so that engineering processing of the lens is facilitated.
Description
Technical field
The present invention relates to the lens technologies field, relate in particular to a kind of lens for the LED bulb lamp.
Background technology
Led light source is entering lighting field fast as a kind of new light source type, and than conventional light source, led light source has high optical efficiency, low energy consumption, long-life advantage, has distinct advantage aspect green low-carbon and the energy-saving and emission-reduction.The development of led light source is according to its replaceable conventional light source.Yet the deficiency of the relative conventional incandescent of existing led light source is that the light that led chip sends is approximate lambert's body distribution, and generally lighting angle is 120 degree, and conventional incandescent bulb lamp lighting angle is very big, can reach more than 270 degree.Led light source can not satisfy the luminous requirement of wide-angle because of it, can not really reach the effect of direct replacement conventional light source.How improving optical quality becomes the emphasis of LED production development.
Summary of the invention
The objective of the invention is to not only can increase LED bulb lamp lighting angle and can be used as the lens that lampshade uses and provide a kind of for overcoming the defective of prior art.
For achieving the above object, the present invention is by the following technical solutions: a kind of lens for the LED bulb lamp, comprise an outer lens, described outer lens is curved body, this outer lens comprises an outer diffuse transmission face and an external reflectance face, form first light guide section between described outer diffuse transmission face and the external reflectance face, the led chip top in the LED bulb lamp is located in the bottom of described first light guide section.
Furtherly, described lens for the LED bulb lamp also comprise a bottom surface, and described outer lens is located on the bottom surface and with the bottom surface and is fixedlyed connected.
Furtherly, described outer lens is hemispherical.
Furtherly, the lens that are used for the LED bulb lamp also comprise the interior lens of being located in the outer lens and being tubular, lens comprise diffuse transmission face and an interior reflective surface in the top margin interconnective in described, form second light guide section in described between diffuse transmission face and the interior reflective surface, the led chip top in the LED bulb lamp is located in the bottom of described second light guide section.
Furtherly, described outer lens is located on the bottom surface and with the bottom surface with interior lens and is fixedlyed connected.
Furtherly, described interior reflective surface comprises interconnective first reflecting surface and second reflecting surface, and described first reflecting surface is connected with the top margin of interior diffuse transmission face.
Furtherly, described outer lens comprises on one lens and lens once, and the described lens of going up are fixedlyed connected with following lens.
Compared with prior art, the invention has the beneficial effects as follows: the present invention will be by being located at led chip top in the LED bulb lamp by the outer lens that outer diffuse transmission face and external reflectance face constitute, after the light that led chip sends enters first light guide section, under the light effect of reflecting surface and outer diffuse transmission face outside reflection takes place and thereby diffuse transmission makes the light redistribution, the rising angle of increase LED bulb lamp; And hemispheric outer lens also has the effect of lampshade, can increase the luminous flux output of bulb lamp, improves optical property, saves cost; Can improve the effect that redistributes light by lens in arranging, further increase rising angle and the light uniformity of LED bulb lamp; Outer lens is made as lens and two parts of following lens, is conducive to the engineering processing of lens.
Description of drawings
Fig. 1 is 1 one kinds of profiles that are used for the lens of LED bulb lamp of embodiment;
Fig. 2 is 1 one kinds of perspective view that are used for the lens of LED bulb lamp of embodiment;
Fig. 3 is 1 one kinds of light path schematic diagrames that are used for the lens of LED bulb lamp of embodiment;
Fig. 4 is 2 one kinds of profiles that are used for the lens of LED bulb lamp of embodiment;
Fig. 5 is 2 one kinds of vertical views that are used for the lens of LED bulb lamp of embodiment;
Fig. 6 is 2 one kinds of light path schematic diagrames that are used for the lens of LED bulb lamp of embodiment.
The specific embodiment
In order to more fully understand technology contents of the present invention, below in conjunction with specific embodiment technical scheme of the present invention is further introduced and explanation.
Embodiment 1
Referring to figs. 1 through Fig. 3, a kind of lens for the LED bulb lamp provided by the invention comprise an outer lens 11 and a bottom surface 116.Outer lens 11 is semi-spherical shape, is made of an outer diffuse transmission face 112 and an external reflectance face 111.Outer diffuse transmission face 112 is by optics DIFFUSION TREATMENT (the optics DIFFUSION TREATMENT can adopt modes such as frosted, lenticule), and external reflectance face 111 can all reflect the light that is incident to external reflectance face 111 by polishing.Fixedly connected with bottom surface 116 in the bottom that constitutes first light guide section, 113, the first light guide sections 113 between outer diffuse transmission face 112 and the external reflectance face 111.
For the ease of processing, present embodiment also is divided into outer lens 11 lens 114 and following lens 115 two parts.The joint face that last lens 114 are connected with following lens 115 is provided with a groove 117, the joint face that following lens 115 are connected with last lens 114 is provided with a projection 118 that cooperates with groove 117, last lens 114 and following lens 115 are by groove 117 and projection 118 clampings (in other embodiments, can also adopt other type of attachment between last lens 114 and the following lens 115), and between groove 117 and projection 118, smear optical clear glue and make lens 114 bonding with following lens 115, and the matching relationship by optical clear glue and lens material refractive index can improve the leaded light ability of junction.
Lens arrangement of the present invention is on the LED bulb lamp, and the LED bulb lamp comprises circuit board 13 and led chip 12, and led chip 12 is fixed on the wiring board 13 by the mode of paster, and according to the shape of first light guide section, 113 bottoms led chip 12 is arranged in a circle.Lens are fixed on led chip 12 tops, and led chip 12 are contacted or close with first light guide section, 113 bottoms, thereby the light that led chip 12 is sent enters first light guide section 113.After light enters first light guide section 113, part light is incident upon external reflectance face 111 and is all reflexed to outer diffuse transmission face 112 by external reflectance face 111, the part light that is incident upon outer diffuse transmission face 112 penetrates outside the lens through diffusion, part light then is reflected back toward in first light guide section 113 and is incident upon external reflectance face 111 again, and then the process of experience reflection and diffuse transmission.Light in outer lens 11 through the final outer lens 11 that all penetrate after repeatedly reflection and the diffuse transmission.Light is redistributed according to the shape of lens positive camber, and the outer lens 11 in the present embodiment is hemispherical, and the lighting angle of LED bulb lamp is reached more than 330 degree.And be the lampshade use that hemispheric outer lens 11 also can be used as the LED bulb lamp, thereby increase the luminous flux output of LED bulb lamp, improve optical property, save cost.
Embodiment 2
With reference to Fig. 4 to Fig. 6, a kind of lens for the LED bulb lamp provided by the invention comprise lens 24 and a bottom surface 216 in the outer lens 21.Outer lens 21 is semi-spherical shape, is made of an outer diffuse transmission face 212 and an external reflectance face 211.Outer diffuse transmission face 212 is by optics DIFFUSION TREATMENT (the optics DIFFUSION TREATMENT can adopt modes such as frosted, lenticule), and external reflectance face 211 can all reflect the light that is incident to external reflectance face 211 by polishing.Fixedly connected with bottom surface 216 in the bottom that constitutes first light guide section, 213, the first light guide sections 213 between outer diffuse transmission face 212 and the external reflectance face 211.Also be provided with lens 24 in outer lens 21, interior lens 24 are tubular.Interior lens 24 comprise diffuse transmission face 241 and an interior reflective surface in one, wherein interior reflective surface comprises first reflecting surface 242 and second reflecting surface 243 again, one side of first reflecting surface 242 is connected with second reflecting surface 243, and the another side of first reflecting surface 242 is connected with the top margin of interior diffuse transmission face 241.Form second light guide section 244 between interior diffuse transmission face 241, first reflecting surface 242 and second reflecting surface 243.Fixedly connected with bottom surface 216 in the bottom of second light guide section 244.
For the ease of processing, present embodiment also is divided into outer lens 21 lens 214 and following lens 215 two parts.The joint face that last lens 214 are connected with following lens 215 is provided with a groove 217, the joint face that following lens 215 are connected with last lens 214 is provided with a projection 218 that cooperates with groove 217, last lens 214 and following lens 215 are by groove 217 and projection 218 clampings (in other embodiments, can also adopt other type of attachment between last lens 214 and the following lens 215), and between groove 217 and projection 218, smear optical clear glue and make lens 214 bonding with following lens 215, and the matching relationship by optical clear glue and lens material refractive index can improve the leaded light ability of junction.
Lens arrangement of the present invention is on the LED bulb lamp, the LED bulb lamp comprises circuit board 23 and led chip 22, led chip 22 is fixed on the wiring board 23 by the mode of paster, and arranges led chip 22 according to the shape of first light guide section, 213 bottoms and second light guide section, 244 bottoms.In the present embodiment, be provided with two circle led chip 22(in other embodiments at circuit board 23, the quantity of the number of turns that led chip 22 is arranged on the circuit board 23 and led chip 22 is according to the size of LED bulb lamp and the requirement setting of luminous flux).Lens are fixed on led chip 22 tops, and two circle led chips 22 are contacted with second light guide section, 244 bottoms with first light guide section, 213 bottoms respectively or close, thereby the light that led chip 22 is sent enters first light guide section 213 or second light guide section 244.After light enters first light guide section 213, part light is incident upon external reflectance face 211 and is all reflexed to outer diffuse transmission face 212 by external reflectance face 211, the part light that is incident upon outer diffuse transmission face 212 penetrates outside the lens through diffusion, part light then is reflected back toward in first light guide section 213 and is incident upon external reflectance face 111 again, and then the process of experience reflection and diffuse transmission.Light in outer lens 21 through the final outer lens 21 that all penetrate after repeatedly reflection and the diffuse transmission.Light enters that also to be similar to the light that enters first light guide section 213 behind second light guide section 244 such, repeatedly reflection and diffuse transmission of experience under the effect of interior reflective surface and interior diffuse transmission face 241, the final lens that all penetrate of light.Light is redistributed according to the shape of lens positive camber, and the outer lens 21 in the present embodiment is hemispherical, and the lighting angle of LED bulb lamp is reached more than 330 degree.(in other embodiments, the shape of outer lens can require design according to the optics of reality.) and be the lampshade use that hemispheric outer lens 21 also can be used as the LED bulb lamp, thereby increase the luminous flux output of LED bulb lamp, improve optical property, save cost.
The above only further specifies technology contents of the present invention with embodiment, so that the reader is more readily understood, does not only limit to this but do not represent embodiments of the present invention, and any technology of doing according to the present invention is extended or recreation, all is subjected to protection of the present invention.
Claims (7)
1. lens that are used for the LED bulb lamp, it is characterized in that: comprise an outer lens (21), described outer lens (21) is a curved body, this outer lens (21) comprises an outer diffuse transmission face (212) and an external reflectance face (211), form first light guide section (213) between described outer diffuse transmission face (212) and the external reflectance face (211), led chip (22) top in the LED bulb lamp is located in the bottom of described first light guide section (213).
2. according to the described a kind of lens for the LED bulb lamp of claim 1, it is characterized in that: also comprise a bottom surface (216), described outer lens (21) is located on the bottom surface (216) and with bottom surface (216) and is fixedlyed connected.
3. according to the described a kind of lens for the LED bulb lamp of claim 1, it is characterized in that: described outer lens (21) is hemispherical.
4. according to the described a kind of lens for the LED bulb lamp of claim 1, it is characterized in that: also comprise the interior lens (24) of being located in the outer lens (21) and being tubular, lens (24) comprise diffuse transmission face (241) and an interior reflective surface in the top margin interconnective in described, form second light guide section (244) in described between diffuse transmission face (241) and the interior reflective surface, led chip (22) top in the LED bulb lamp is located in the bottom of described second light guide section (244).
5. according to the described a kind of lens for the LED bulb lamp of claim 4, it is characterized in that: also comprise a bottom surface (216), described outer lens (21) is located on the bottom surface (216) and with bottom surface (216) with interior lens (24) and is fixedlyed connected.
6. according to the described a kind of lens for the LED bulb lamp of claim 4, it is characterized in that: described interior reflective surface comprises interconnective first reflecting surface (242) and second reflecting surface (243), and described first reflecting surface (242) is connected with the top margin of interior diffuse transmission face (241).
7. according to the described any lens for the LED bulb lamp of claim 1-6, it is characterized in that: described outer lens (21) comprises lens on (214) and lens (215) once, and the described lens (214) of going up are fixedlyed connected with following lens (215).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123412XA CN103292249A (en) | 2013-04-11 | 2013-04-11 | Lens used for LED bulb lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123412XA CN103292249A (en) | 2013-04-11 | 2013-04-11 | Lens used for LED bulb lamp |
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| Publication Number | Publication Date |
|---|---|
| CN103292249A true CN103292249A (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310123412XA Pending CN103292249A (en) | 2013-04-11 | 2013-04-11 | Lens used for LED bulb lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574751A (en) * | 2014-11-17 | 2017-04-19 | 飞利浦照明控股有限公司 | Lighting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1755952A (en) * | 2004-09-30 | 2006-04-05 | 徐建国 | Dissimilar LED luminous sheet or casing |
| CN101776242A (en) * | 2009-01-12 | 2010-07-14 | 林万炯 | Side light guiding lens for light emitting diode (LED) light source |
| CN202065775U (en) * | 2011-01-30 | 2011-12-07 | 陈晓锋 | Lamp with multiple light effects |
| CN202598199U (en) * | 2012-04-11 | 2012-12-12 | 欧普照明股份有限公司 | LED (Light-emitting Diode) side light-emitting panel lamp |
-
2013
- 2013-04-11 CN CN201310123412XA patent/CN103292249A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1755952A (en) * | 2004-09-30 | 2006-04-05 | 徐建国 | Dissimilar LED luminous sheet or casing |
| CN101776242A (en) * | 2009-01-12 | 2010-07-14 | 林万炯 | Side light guiding lens for light emitting diode (LED) light source |
| CN202065775U (en) * | 2011-01-30 | 2011-12-07 | 陈晓锋 | Lamp with multiple light effects |
| CN202598199U (en) * | 2012-04-11 | 2012-12-12 | 欧普照明股份有限公司 | LED (Light-emitting Diode) side light-emitting panel lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574751A (en) * | 2014-11-17 | 2017-04-19 | 飞利浦照明控股有限公司 | Lighting device |
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Application publication date: 20130911 |