CN105465739A - Lens, light guide module with lens and lighting device - Google Patents
Lens, light guide module with lens and lighting device Download PDFInfo
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- CN105465739A CN105465739A CN201410429953.XA CN201410429953A CN105465739A CN 105465739 A CN105465739 A CN 105465739A CN 201410429953 A CN201410429953 A CN 201410429953A CN 105465739 A CN105465739 A CN 105465739A
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- light
- lens
- emitting diode
- diode chip
- backlight unit
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Abstract
A lens is used for adjusting the optical field distribution of a light emitting diode chip and comprises a light incident face and a light emergent face opposite to the light incident face. A first direction and a second direction perpendicular to the first direction are defined in the plane where the lens is located while being horizontally arranged. The light emergent face is an outwards-convex ellipsoidal surface, the long axis of the light emergent face is parallel to the first direction, and the short axis of the light emergent face is parallel to the second direction. The light incident face is an inwards-concave ellipsoidal surface, the long axis of the light incident face is parallel to the second direction, and the short axis of the light incident face is parallel to the first direction. A light beam of the light emitting diode chip penetrates through the lens and then is divergent in the first direction and convergent in the second direction, and therefore the light beam is projected to form a rectangular optical field. The light incident face and the light emergent face of the lens are matched, and the light beam of the light emitting diode chip penetrates through the lens and then is projected to form the rectangular optical field, so that the light utilization efficiency is effectively improved. The invention further relates to a light guide module with the lens and a lighting device.
Description
Technical field
The present invention relates to optical field, particularly relate to a kind of lens and there is guide-lighting module and the lighting device of these lens.
Background technology
Light emitting diode (lightemittingdiode, LED), as a kind of light emitting source efficiently, has the various features such as environmental protection, power saving, life-span length, is applied among road illumination device widely.
But the field of illumination of conventional illuminator is mostly circular, and a part of light is broken forth outside road scope, causes the outgoing beam utilization rate of LED light source lower.So, the field of illumination then requiring road illumination device to be formed roughly is rectangle as good, namely on road travel direction, there is larger illumination zone, and perpendicular to road travel direction having less illumination zone, to make full use of the outgoing beam of LED light source.
Summary of the invention
In view of this, the lens being necessary to provide a kind of field of illumination to be roughly rectangle and the guide-lighting module with these lens and lighting device.
A kind of lens, for regulating the optical field distribution of a light-emitting diode chip for backlight unit, comprise the incidence surface and exiting surface that are oppositely arranged, definition one first direction and a second direction in plane residing when described lens are horizontally disposed with, described first direction and second direction are mutually vertical, this exiting surface is the ellipsoid of an evagination, the longer axis parallel of this exiting surface is in first direction, the minor axis parallel of this exiting surface is in second direction, this incidence surface is the ellipsoid of an indent, the longer axis parallel of this incidence surface is in second direction, the minor axis parallel of this incidence surface is in first direction, the light beam that this light-emitting diode chip for backlight unit sends converges along second direction through dispersing along first direction after lens, and then the rectangular light field of projection formation one.
A kind of guide-lighting module, for regulating the optical field distribution of multiple light-emitting diode chip for backlight unit, comprise a light-passing board and be formed at the multiple lens on light-passing board, the plurality of lens are arranged in array on light-passing board, the equal corresponding multiple light-emitting diode chip for backlight unit of the plurality of lens is arranged, wherein each lens comprises the incidence surface and exiting surface that are oppositely arranged, definition one first direction and a second direction in plane residing when described lens are horizontally disposed with, described first direction and second direction are mutually vertical, this exiting surface is the ellipsoid of an evagination, the longer axis parallel of this exiting surface is in first direction, the minor axis parallel of this exiting surface is in second direction, this incidence surface is the ellipsoid of an indent, the longer axis parallel of this incidence surface is in second direction, the minor axis parallel of this incidence surface is in first direction, the light beam that this light-emitting diode chip for backlight unit sends converges along second direction through dispersing along first direction after corresponding lens, and then the rectangular light field of projection formation one.
A kind of lighting device, comprise a light-emitting diode chip for backlight unit and lens, these lens have the incidence surface and exiting surface that are oppositely arranged, this light-emitting diode chip for backlight unit is arranged towards the incidence surface of these lens, described lens comprise the incidence surface and exiting surface that are oppositely arranged, definition one first direction and a second direction in plane residing when described lens are horizontally disposed with, described first direction and second direction are mutually vertical, this exiting surface is the ellipsoid of an evagination, the longer axis parallel of this exiting surface is in first direction, the minor axis parallel of this exiting surface is in second direction, this incidence surface is the ellipsoid of an indent, the longer axis parallel of this incidence surface is in second direction, the minor axis parallel of this incidence surface is in first direction, the light beam that this light-emitting diode chip for backlight unit sends converges along second direction through dispersing along first direction after lens, and then the rectangular light field of projection formation one.
Incidence surface and the exiting surface of described lens match, the light beam that this light-emitting diode chip for backlight unit is sent converges along second direction through dispersing along first direction after lens, the field of illumination that lighting device is formed roughly is rectangle, and effectively improves the utilization ratio of light.
Accompanying drawing explanation
Fig. 1 is the perspective view of the lighting device of the embodiment of the present invention.
Fig. 2 is the perspective view of another angle of lighting device shown in Fig. 1.
Fig. 3 is for lighting device shown in Fig. 1 is along the sectional view in III-III line direction.
Fig. 4 is for lighting device shown in Fig. 1 is along the sectional view in IV-IV line direction.
The optical field distribution curve map that Fig. 5 is lighting device shown in Fig. 1.
Main element symbol description
| Lighting device | 1 |
| Guide-lighting module | 2 |
| LED light source array | 3 |
| Light-passing board | 21 |
| Lens | 22 |
| Light-emitting diode chip for backlight unit | 31 |
| Upper surface | 211 |
| Lower surface | 212 |
| Accepting groove | 213 |
| Enclosing | 214 |
| Screw | 215 |
| Capillary groove | 216 |
| Trunking | 217 |
| Incidence surface | 221 |
| Exiting surface | 222 |
| Optical axis | O |
| First direction | X |
| Second direction | Y |
| Third direction | Z |
| Major axis | a 、d |
| Minor axis | b、c |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1 and Fig. 2, use the guide-lighting module 2 that the lighting device 1 of the embodiment of the present invention comprises a LED light source array 3 and coordinates with this LED light source array 3 optics.This LED light source array 3 comprises multiple light-emitting diode chip for backlight unit 31.Multiple lens 22 that this guide-lighting module 2 comprises a light-passing board 21 and is positioned on this light-passing board 21.The corresponding multiple light-emitting diode chip for backlight unit 31 of described multiple lens 22 is arranged.Each lens 22 is for regulating the optical field distribution of respective leds chip 31.Each lens 22 comprises the incidence surface 221 and exiting surface 222 that are oppositely arranged.Incidence surface 221 and the exiting surface 222 of each lens 22 cooperatively interact, and the light beam sent to make light-emitting diode chip for backlight unit 31, through after corresponding lens 22, projects the rectangular light field of formation one.
This light-passing board 21 is roughly rectangular, and it has the upper surface 211 and lower surface 212 that are oppositely arranged.The lower surface 212 of this light-passing board 21 is recessed to form the accepting groove 213 of a rectangle towards upper surface 211.The lower surface 212 of this light-passing board 21 is peripherally installed with an enclosing 214 in this accepting groove 213.This light-passing board 21 offers multiple screw 215 in the bottom of this accepting groove 213.Each screw 215 all runs through upper surface 211 and the lower surface 212 of this light-passing board 21.The plurality of screw 215 coordinates with fixture (such as screw, figure does not show), thus is mounted on by light-passing board 21 on outside support (such as electric pole, figure does not show).
The plurality of lens 22 are all positioned at this accepting groove 213.In the present embodiment, the quantity of these lens 22 is 12, and the plurality of lens 22 form the matrix that 3 row 4 arrange.The incidence surface 221 of each lens 22 all caves in towards the upper surface 211 of light-passing board 21 from the bottom of this accepting groove 213.Each light-emitting diode chip for backlight unit 31 is contained in this accepting groove 213 and incidence surface 221 towards corresponding lens 22 is arranged.
The lower surface 212 of this light-passing board 21 offers an annular capillary groove 216.This capillary groove 216 be positioned at described lens 22 array periphery and by enclosing 214 institute around.Usually be provided with waterproof adhesive tape (not shown) in this capillary groove 216, thus this LED light source array 3 is completely cut off with external moisture.
The lower surface 212 of this light-passing board 21 also offers a trunking 217 between two row light-emitting diode chip for backlight unit 31.This trunking 217 is recessed to form towards the upper surface 211 of light-passing board 21 from the bottom of accepting groove 213.This trunking 217 is for accommodating the wire connecing and cause this LED light source array 3.
For convenience of description, the length direction of the light-passing board 21 of lighting device in Fig. 11 is defined as first direction X, the width of light-passing board 21 is defined as second direction Y, the thickness direction of light-passing board 21 is defined as third direction Z, and in described first direction X, second direction Y, third direction Z three, both are mutually vertical arbitrarily.The plurality of lens 22 are all positioned at X-Y plane when being horizontally disposed with.
See also Fig. 3 and Fig. 4, this exiting surface 222 is the ellipsoid of an evagination.The major axis a of this exiting surface 222 is parallel to first direction X, and the minor axis c of this exiting surface 222 is parallel to second direction Y.This incidence surface 221 is the ellipsoid of an indent.The major axis d of this incidence surface 221 is parallel to second direction Y, and the minor axis b of this incidence surface 221 is parallel to first direction X.
Along first direction X, the radius of curvature of this exiting surface 222 is greater than the radius of curvature (referring to Fig. 3) of this incidence surface 221.Along second direction Y, the radius of curvature of this exiting surface 222 is less than the radius of curvature (referring to Fig. 4) of this incidence surface 221.
Because this incidence surface 221 and exiting surface 222 are ellipsoid, and the major axis a(minor axis c of this exiting surface 222) with the minor axis b(major axis d of incidence surface 221) setting direction mutually vertical; Along first direction X, the radius of curvature of this exiting surface 222 is greater than the radius of curvature of this incidence surface 221, along second direction Y, the radius of curvature of this exiting surface 222 is less than the radius of curvature of this incidence surface 221, after this light beam that can ensure that each light-emitting diode chip for backlight unit 31 sends passes corresponding lens 22, light beam is dispersed along first direction X and converges along second direction Y, and then the rectangular light field of projection formation one.
This light-emitting diode chip for backlight unit 31 has an optical axis O, and in the cross section being parallel to this first direction X, the optical axis O of this exiting surface 222 this light-emitting diode chip for backlight unit 31 all relative to incidence surface 221 is symmetrical arranged (referring to Fig. 3).In the cross section being parallel to this second direction Y, this incidence surface 221 is symmetrical arranged relative to the optical axis O of this light-emitting diode chip for backlight unit 31, and the optical axis O(that the geometric center of this exiting surface 222 departs from this light-emitting diode chip for backlight unit 31 refers to Fig. 4).
This incidence surface 221 and corresponding exiting surface 222 interval are arranged.Along second direction Y, this incidence surface 221 reduces rapidly from the side of lens 22 with the spacing of exiting surface 222 after opposite side first increases gradually.In other words, one end that this incidence surface 221 is positioned at major axis d refers to Fig. 4 compared to the other end of major axis d closer to exiting surface 222(), this light beam that each light-emitting diode chip for backlight unit 31 can be made to send through after corresponding lens 22, when light beam converges along second direction Y can towards the side of optical axis O deviation (referring to Fig. 5) slightly.
Refer to Fig. 5, be the optical field distribution curve map of the lighting device 1 of the embodiment of the present invention, in Fig. 5, curve X refers to the light emitting anger-curve of light distribution recorded along first direction X, and curve Y refers to the light emitting anger-curve of light distribution recorded along second direction Y.
As can be seen from the figure, along first direction X, the beam angle of this lighting device 1 is about 137.4 degree, and the relative optical axis O of the curve of light distribution is symmetric, light intensity is 0 degree from the luminous half-angle of optical axis O() increase gradually towards both sides, near luminous half-angle 55 degree, there is maximum in light intensity, along with the increase of luminous half-angle, light intensity declines rapidly; Along second direction Y, the beam angle of this lighting device 1 is about 90 degree, and the curve of light distribution offsets to the left relative to optical axis O, be 0 degree from the luminous half-angle of optical axis O() towards left side, light intensity first increases, near luminous half-angle 20 degree gradually, there is maximum in light intensity, light intensity declines gradually subsequently, and from optical axis O towards right side, light intensity is successively decreased gradually.When above-mentioned lighting device 1 is applied to road lighting, the light beam that each light-emitting diode chip for backlight unit 31 sends is roughly a rectangle through irradiation area after corresponding lens 22, by rationally arranging the spacing between multiple light-emitting diode chip for backlight unit 31, the light beam of this LED light source array 3 can be made through continuous, the uniform rectangle light field of projection formation one after guide-lighting module 2, this can make light beam be irradiated to as much as possible on road surface, improves light utilization ratio; Simultaneously because the light beam of this light-emitting diode chip for backlight unit 31 is through after corresponding lens 22, light beam converges along second direction Y and is partial to the side of optical axis O towards road surface, and this can prevent light directive pedestrian, effectively reduces the dazzle coefficient of lighting device 1.
When above-mentioned lighting device is used for tunnel or road lighting, the first direction X that as far as possible should ensure these lens 22 in the process of lighting device is wherein installed roughly parallel with road travel direction, and the second direction Y of these lens 22 roughly vertical with road travel direction (i.e. road width direction).
Be understandable that, for the person of ordinary skill of the art, the change and distortion that other various picture answers can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (10)
1. lens, for regulating the optical field distribution of a light-emitting diode chip for backlight unit, comprise the incidence surface and exiting surface that are oppositely arranged, definition one first direction and a second direction in plane residing when described lens are horizontally disposed with, described first direction and second direction are mutually vertical, it is characterized in that: this exiting surface is the ellipsoid of an evagination, the longer axis parallel of this exiting surface is in first direction, the minor axis parallel of this exiting surface is in second direction, this incidence surface is the ellipsoid of an indent, the longer axis parallel of this incidence surface is in second direction, the minor axis parallel of this incidence surface is in first direction, the light beam that this light-emitting diode chip for backlight unit sends converges along second direction through dispersing along first direction after lens, and then the rectangular light field of projection formation one.
2. lens as claimed in claim 1, it is characterized in that: along first direction, the radius of curvature of this exiting surface is greater than the radius of curvature of this incidence surface.
3. lens as claimed in claim 2, it is characterized in that: along second direction, the radius of curvature of this exiting surface is less than the radius of curvature of this incidence surface.
4. lens as claimed in claim 3, it is characterized in that: this light-emitting diode chip for backlight unit is arranged towards this incidence surface, this light-emitting diode chip for backlight unit has an optical axis, and in the cross section being parallel to this first direction, the optical axis of this exiting surface this light-emitting diode chip for backlight unit all relative to incidence surface is symmetrical arranged.
5. lens as claimed in claim 4, it is characterized in that: in the cross section being parallel to this second direction, this incidence surface is symmetrical arranged relative to the optical axis of this light-emitting diode chip for backlight unit, and the geometric center of this exiting surface departs from the optical axis of this light-emitting diode chip for backlight unit.
6. lens as claimed in claim 5, is characterized in that: this incidence surface and exiting surface interval are arranged, and along second direction, the spacing of this incidence surface and exiting surface reduces rapidly after opposite side first increases gradually from the side of lens.
7. a guide-lighting module, for regulating the optical field distribution of multiple light-emitting diode chip for backlight unit, comprise a light-passing board and be formed at the multiple lens on light-passing board, the plurality of lens are arranged in array on light-passing board, it is characterized in that: described lens are the lens such as according to any one of claim the 1-6 item, wherein the equal corresponding multiple light-emitting diode chip for backlight unit of the plurality of lens is arranged.
8. guide-lighting module as claimed in claim 7, it is characterized in that: this light-passing board has the upper and lower surface be oppositely arranged, the lower surface of this light-passing board is recessed to form an accepting groove towards its upper surface, the incidence surface of each lens is all recessed to form towards the upper surface of light-passing board from the bottom of accepting groove, if should to be contained in this accepting groove and incidence surface towards corresponding lens is arranged by multiple light-emitting diode chip for backlight unit.
9. a lighting device, comprise a light-emitting diode chip for backlight unit and lens, these lens have the incidence surface and exiting surface that are oppositely arranged, and this light-emitting diode chip for backlight unit is arranged towards the incidence surface of these lens, it is characterized in that: described lens are the lens such as according to any one of claim the 1-6 item.
10. lighting device as claimed in claim 9, it is characterized in that: the beam angle along first direction is 137.4 degree, the beam angle along second direction is 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429953.XA CN105465739A (en) | 2014-08-28 | 2014-08-28 | Lens, light guide module with lens and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429953.XA CN105465739A (en) | 2014-08-28 | 2014-08-28 | Lens, light guide module with lens and lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105465739A true CN105465739A (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410429953.XA Pending CN105465739A (en) | 2014-08-28 | 2014-08-28 | Lens, light guide module with lens and lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465739A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805696A (en) * | 2014-12-30 | 2016-07-27 | 全亿大科技（佛山）有限公司 | Lens, illuminating device provided with lens, and light guiding cover |
| CN107763569A (en) * | 2017-11-21 | 2018-03-06 | 广州达森灯光股份有限公司 | A kind of plurality of LEDs lamp condenser dodging device for stage lamp |
| CN110887006A (en) * | 2018-08-17 | 2020-03-17 | 乐健科技（珠海）有限公司 | LED car lamp module, manufacturing method thereof and circuit board for LED car lamp module |
-
2014
- 2014-08-28 CN CN201410429953.XA patent/CN105465739A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805696A (en) * | 2014-12-30 | 2016-07-27 | 全亿大科技（佛山）有限公司 | Lens, illuminating device provided with lens, and light guiding cover |
| CN107763569A (en) * | 2017-11-21 | 2018-03-06 | 广州达森灯光股份有限公司 | A kind of plurality of LEDs lamp condenser dodging device for stage lamp |
| CN110887006A (en) * | 2018-08-17 | 2020-03-17 | 乐健科技（珠海）有限公司 | LED car lamp module, manufacturing method thereof and circuit board for LED car lamp module |
| CN110887006B (en) * | 2018-08-17 | 2021-12-03 | 丰鹏电子(珠海)有限公司 | LED car lamp module, manufacturing method thereof and circuit board for LED car lamp module |
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Application publication date: 20160406 |