CN105156990B - LED street lamp lens unit, LED street lamp lens module and street lamp with LED street lamp lens module - Google Patents
LED street lamp lens unit, LED street lamp lens module and street lamp with LED street lamp lens module Download PDFInfo
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- CN105156990B CN105156990B CN201510338983.4A CN201510338983A CN105156990B CN 105156990 B CN105156990 B CN 105156990B CN 201510338983 A CN201510338983 A CN 201510338983A CN 105156990 B CN105156990 B CN 105156990B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/048—Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides an LED street lamp lens unit which is arranged at a light outlet of an LED light source and comprises an emergent surface and an incident surface, wherein the emergent surface is planar, the incident surface is free-form surface, a rectangular coordinate system OXYZ is established by taking the plane which is parallel to the emergent surface and passes through the LED light source as an XY plane and taking the LED light source as an O point, in the rectangular coordinate system OXYZ, the positive Y direction part of the incident surface is larger than or equal to the negative Y direction part, and the Z direction height of the incident surface changes along with the change of the included angle between the emergent light of the LED light source and the Y axis. The invention also discloses a street lamp, which comprises a driving module and the LED street lamp lens module, wherein the driving module is arranged in the shell, and the driving module drives the LED street lamp lens module to emit light.
Description
Technical Field
The invention relates to the field of illumination, in particular to an LED street lamp lens unit, an LED street lamp lens module and a street lamp with the LED street lamp lens module.
Background
In order to meet the design standard of urban road lighting, the traditional road lighting lamp usually adopts a mercury-containing bulb which consumes more than 200 watts. In contrast, by 2009, the optical efficiency of Light Emitting Diodes (LEDs) on the market has exceeded 100lm/W, which means that street lights using LEDs as light sources will have a greatly reduced power consumption. Due to the ultra-long service life, mercury-free and energy-saving characteristics of LEDs, it is a good choice to replace conventional LPS (low pressure sodium lamp) or MH (metal halide lamp) with a street lamp using LEDs as the light source. Currently, LED street lamps are tested in various countries of the world. In order to solve the problems of energy shortage and emission of greenhouse gases, LED street lamps have been put to practical use in some places, among which governments in china, north america, and some regions and cities in europe have been actively promoted.
The street lamp lens in the current market is basically in a peanut shape, has an inner optical surface and an outer optical surface and is a free-form surface, when the street lamp lens is designed, the inner surface is generally fixed, the outer surface is designed or the inner surface and the outer surface are synchronously designed, the design is complex, the surface of the lamp is uneven, and the appearance is influenced.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide an LED street lamp lens unit, an LED street lamp lens module and a street lamp with the LED street lamp lens module.
The invention discloses an LED street lamp lens unit which is arranged at a light outlet of an LED light source and comprises an emergent surface and an incident surface, wherein the emergent surface is planar, the incident surface is free-form surface, a rectangular coordinate system OXYZ is established by taking the plane which is parallel to the emergent surface and passes through the LED light source as an XY plane and taking the LED light source as an O point, in the rectangular coordinate system OXYZ, the positive Y direction part of the incident surface is larger than or equal to the negative Y direction part, and the Z direction height of the incident surface changes along with the change of the included angle between the emergent light of the LED light source and the Y axis.
Preferably, the entrance face is symmetrical about the Y axis.
Preferably, in the ZOY section, the Z-direction height of the incident surface increases as the Y coordinate decreases in the range where the included angle between the outgoing light and the Y axis is 0 to 30 degrees and 70 to 130 degrees, and the Z-direction height of the incident surface decreases as the Y coordinate decreases in the range where the included angle between the outgoing light and the Y axis is 30 to 70 degrees and 130 to 180 degrees.
Preferably, the incidence plane is symmetrical about the X axis while being symmetrical about the Y axis.
Preferably, in the ZOY section plane, the incident plane is a cambered surface.
Preferably, the incidence plane is a rotationally symmetric pattern.
Preferably, in the ZOY section plane, the Z-direction height of the incident plane decreases as the absolute value of the Y-coordinate increases.
Preferably, when the included angle between the emergent light and the Y axis is in the range of 0 to 30 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 90 degrees to 110 degrees; when the included angle between the emergent light and the Y axis is in the range of 30-70 degrees, the included angle between the tangent of the incident surface and the positive Z axis is reduced from 110 degrees to 105 degrees; and when the included angle between the emergent light and the Y axis is in the range of 70-90 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 105 degrees to 140 degrees.
Preferably, in the ZOX cross-section, the incident plane has a Z-direction height that decreases as the absolute value of the X-coordinate increases.
Preferably, when the included angle between the emergent light and the X axis is in the range of 0 to 30 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 90 degrees to 110 degrees; when the included angle between the emergent light and the X axis is in the range of 30-70 degrees, the included angle between the tangent of the incident surface and the positive Z axis is reduced from 110 degrees to 105 degrees; when the included angle between the emergent light and the X axis is in the range of 70-90 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 105 degrees to 140 degrees.
Preferably, the lens unit of the LED street lamp is a total reflection lens.
The invention also discloses an LED street lamp lens module which comprises a shell and a plurality of LED street lamp lens units fixed in the shell.
Preferably, the LED street lamp lens units are arranged in a lens array, and an incident surface of each LED street lamp lens unit deflects light in the same direction.
The invention also discloses a street lamp, which comprises a driving module and the LED street lamp lens module, wherein the driving module is arranged in the shell, and the driving module drives the LED street lamp lens module to emit light.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the LED street lamp lens with the plane outer surface can meet the road lighting requirement, is convenient to process and clean the lens surface, and has good appearance smoothness.
2. In the LED street lamp lens unit used by the invention, the included angle between the emergent light of the LED light source received by the incident surface in the height of the Z direction and the Y axis is related, so that the road illumination with more uniformity and wider irradiation distance is realized.
Drawings
FIG. 1 is a perspective view of an LED street light lens unit in accordance with a preferred embodiment of the present invention;
FIG. 2 is a top view of an LED street light lens unit according to a first preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view of an LED street light lens unit ZOX in accordance with a first preferred embodiment of the present invention;
FIG. 4 is a sectional view of an LED street lamp lens unit ZOY according to a first preferred embodiment of the present invention;
fig. 5 is a light path diagram of a section of the LED street lamp lens unit ZOX according to the first preferred embodiment of the present invention;
FIG. 6 is an optical path diagram of a ZOY section of an LED street lamp lens unit in accordance with a first preferred embodiment of the present invention;
FIG. 7 is a top view of an LED street light lens unit according to a second preferred embodiment of the present invention;
FIG. 8 is a cross-sectional view of an LED street light lens unit ZOX in accordance with a second preferred embodiment of the present invention;
FIG. 9 is a sectional view of an LED street lamp lens unit ZOY according to a second preferred embodiment of the present invention;
fig. 10 is a light path diagram of a section of the LED street lamp lens unit ZOX according to the second preferred embodiment of the present invention;
FIG. 11 is an optical path diagram of a ZOY section of an LED street lamp lens unit in accordance with a second preferred embodiment of the present invention;
FIG. 12 is a top view of an LED street light lens unit in accordance with a third preferred embodiment of the present invention;
FIG. 13 is a cross-sectional view ZOX of an LED street light lens unit in accordance with a third preferred embodiment of the invention;
fig. 14 is a light path diagram of a cross section of the LED street lamp lens unit ZOX according to the third preferred embodiment of the present invention;
FIG. 15 is a light distribution curve diagram of a lens unit of an LED street lamp according to a preferred embodiment of the invention;
fig. 16 shows an LED street lamp lens module according to a preferred embodiment of the invention.
Reference numerals:
1-an LED light source;
2-an exit surface;
3-an incident plane;
4-a shell;
and 5, an LED street lamp lens unit.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Fig. 1 shows an LED street lamp lens unit 5 according to a preferred embodiment of the present invention, which is disposed at a light outlet of an LED light source 1, and the overall shape of the lens unit can be designed into a rectangular cube, a cylinder, etc. according to actual light distribution requirements, but the integrity of the inner cavity structure must be ensured without being damaged. The LED street lamp lens unit 5 comprises an exit surface 2 with a flat shape and an entrance surface 3 with a free-form surface, and specifically, a flat surface of the LED street lamp lens unit 5 is used as the exit surface 2, and an inward concave surface with a free-form surface is concavely arranged at a position opposite to the exit surface 2 to be used as the entrance surface 3, so that due to the inward concave arrangement of the entrance surface 3, an accommodating part for accommodating the LED light source 1 can be formed, and the entrance surface 3 can receive the emergent light from the LED light source 1 as much as possible.
A rectangular coordinate system OXYZ is established by taking a plane which is parallel to the emergent surface 2 and passes through the LED light source 1 as an XY plane and the LED light source 1 as an O point, in the rectangular coordinate system OXYZ, the positive Y direction part of the incident surface 3 is larger than or equal to the negative Y direction part, and the Z direction height of the incident surface 3 changes along with the change of an included angle between emergent light of the LED light source 1 and a Y axis. The LED street lamp lens unit 5 configured as described above is placed away from the point O in the Y-axis direction in the xyz rectangular coordinate system, so that more distant places on the road can be illuminated during practical use.
The plane shape of the incidence plane 3 of the present invention has the structures of three preferred embodiments, that is, the incidence plane 3 is symmetrical about the Y axis, the incidence plane 3 is symmetrical about both the X axis and the Y axis, and the incidence plane 3 is rotationally symmetrical about the O point. A common feature of the three embodiments is that the three surface configurations of the entrance surface 3 are identical in section ZOX. Specifically, the height of the incident surface 3 in the Z direction decreases with the increase of the absolute value of the X coordinate, and a substantially convex curved surface is formed, so that the emergent light of the LED light source 1 passes through the LED street lamp lens unit 5 and then irradiates on the road in a divergent manner, as shown in fig. 3, 8 and 13, when the included angle between the emergent light of the LED light source 1 and the X axis is in the range of 0 to 30 degrees, the included angle between the tangent of the incident surface 3 and the positive Z axis is increased from 90 degrees to 110 degrees, when the included angle between the emergent light of the LED light source 1 and the X axis is in the range of 30 to 70 degrees, the included angle between the tangent of the incident surface 3 and the positive Z axis is decreased from 110 degrees to 105 degrees, when the included angle between the emergent light of the LED light source 1 and the X axis is in the range of 70 to 90 degrees, the included angle between the tangent of the incident surface 3 and the positive Z axis is increased from 105 degrees to 140 degrees, and the optical path diagram is shown in fig. 5, 10 and 14, most of the emergent light l1 of the LED light source 1 is firstly refracted by the incident surface 3 and once diffused, and then the light is refracted by the emergent surface 2 to generate secondary diffusion, so that a point light source or an approximate point light source is diffused into a light spot with longer irradiation distance and uniform brightness distribution, meanwhile, a small part of light l2 in emergent light can be reflected when contacting the incident surface 3 and the emergent surface 2, and some of the light can be emitted from the side surface of the lens unit 5 through primary reflection, and some of the light can be emitted from other surfaces of the lens unit 5 through multiple reflection or refraction in the lens unit 5. The light distribution diagram of the head and neck unit 5 of the LED street lamp is shown in fig. 15, and a batwing light spot approaching to a rectangular shape is formed. However, the above configuration is merely an example, and other angle ranges are not excluded.
In the first preferred embodiment shown in fig. 2 and 4, the incident surface 3 is symmetrical about the Y axis, so that the illuminated areas of the road on both sides of the street lamp are substantially the same, and rectangular light spots can be generated. Preferably, in the ZOY section, the invention adopts the following configuration to design the curved surface type of the incident surface 3, namely, in the range of 0 to 30 degrees and 70 to 130 degrees of included angle between the emergent light of the LED light source 1 and the Y axis, the height of the incident surface 3 in the Z direction is increased along with the decrease of the Y coordinate, in the range of 30 to 70 degrees and 130 to 180 degrees of included angle between the emergent light of the LED light source 1 and the Y axis, the height of the incident surface 3 in the Z direction is decreased along with the decrease of the Y coordinate, the light path diagram is shown in figure 6, most of the light ray l3 of the emergent light of the LED light source 1 is projected to the incident surface 3 which tends to be in positive Y-axis partial light distribution, the light ray l3 is converged after refraction of the incident surface 3 and then is transmitted to the emergent surface 2 and then is refracted through the emergent surface 2, and a small part of the light ray l4 of the emergent light is reflected when contacting with the emergent surface 3 and the incident surface 2, and some reflected light is refracted from the side surface of the street lamp lens unit 5, and some light spots are emitted from other surfaces after being reflected for multiple times in the LED street lamp lens unit 5, so that light spots with uniform light intensity distribution and far irradiation are formed. The curved surface type of the incident surface 3 with the above various configurations can make the emergent light of the LED light source 1 spread in a divergent form (as shown in fig. 5 and 6) to the farthest position on the road. In the direction parallel to the road, the emergent light of the light source 1 is split by the incident surface 3 and is uniformly distributed to the two sides of the street lamp through the emergent surface 2; in the direction perpendicular to the road, the emergent light of the light source 1 deflects towards the direction of the motor vehicle lane of the road through the deflection light distribution of the incidence surface 3, so that purposefully deflection light distribution illumination is realized.
In the second preferred embodiment shown in fig. 7, 9 and 11, the incident surface is symmetrical about both the X-axis and the Y-axis, so that the emergent light spot is also substantially centrosymmetrical and more aesthetically pleasing. In the configuration of the incident surface 3, the incident surface is a curved surface in the ZOY section, the light is emitted almost uniformly, and one side of the road is not significantly brighter than the other side of the road. In the direction parallel to the road, the emergent light of the light source 1 is uniformly distributed to the two sides of the street lamp through the emergent surface 2 after being refracted by the arc incident surface 3; in the direction perpendicular to the road, the emergent light of the light source 1 is split by the incident surface 3, and the road under the street lamp is uniformly irradiated, so that an oval light spot is finally generated. In fig. 11, the propagation path and principle of the emitted light from the LED light source 1 are the same as those in fig. 5.
In the third preferred embodiment shown in fig. 12, the incident surface 3 is a rotationally symmetric pattern, and according to actual requirements, the incident surface 3 of the LED street lamp lens unit 5 can be designed to be a curved surface with rotationally symmetric characteristics, so that the emergent light spot is a special light spot with rotationally symmetric characteristics. It has not only the feature that the height in the Z direction of the incident face 3 decreases with an increase in the absolute value of the Y coordinate in the ZOX cross section, but also the same feature in the ZOY cross section, and even further, in the third preferred embodiment, any cross section of the incident face 3 perpendicular to the XY plane through the O point has this feature. Preferably, when the included angle between the emergent light and the Y axis is in the range of 0-30 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 90 degrees to 110 degrees; when the included angle between the emergent light and the Y axis is in the range of 30-70 degrees, the included angle between the tangent of the incident surface and the positive Z axis is reduced from 110 degrees to 105 degrees; when the included angle between the emergent light and the Y axis is in the range of 70-90 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 105 degrees to 140 degrees. Based on this configuration, after the light source 1 transmits through the incident surface 3, the propagation characteristics in all directions are substantially the same, and finally a circular light spot appears on the road under the street lamp.
Preferably, the street lamp lens unit is a total reflection lens, so that the light utilization rate of the LED light source 1 is increased, the light intensity of light spots is enhanced, and energy is saved.
As shown in fig. 16, the present invention discloses an LED street lamp lens module, which includes a housing 4 and a plurality of LED street lamp lens units 5 fixed in the housing 4, wherein the plurality of LED street lamp lens units 5 are integrated together, so as to enhance light intensity and increase irradiation area.
Preferably, the LED street lamp lens units 5 are arranged to form a lens array, and the incident surface 3 of each LED street lamp lens unit 5 is biased to distribute light in the same direction, so that the light intensity of emergent light spots of the whole LED street lamp lens module is uniformly distributed, and the light spots are regular and beautiful in shape.
The invention also discloses a street lamp, which comprises a driving module and the LED street lamp lens module, wherein the driving module is arranged in the shell, the driving module drives the LED street lamp lens module to emit light, the bias light distribution aiming at enabling a motor vehicle lane to be irradiated by more street lamp emergent light in the direction vertical to the road is realized, and the uniform light emission is realized in the direction parallel to the road.
After the LED street lamp lens unit 5 and the street lamp lens module which are consistent with the invention are adopted, the LED street lamp lens with the plane outer surface is used, the road lighting requirement can be met, the processing and cleaning of the lens surface are convenient, and the lamp appearance smoothness is good. In the LED street lamp lens unit 5 used by the invention, the included angle between the emergent light of the LED light source 1 received by the incident surface 3 in the height of the Z direction and the Y axis is related, so that the road illumination with more uniformity and wider irradiation distance is realized.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (9)
1. An LED street lamp lens unit is arranged at a light outlet of an LED light source and is characterized by comprising an emergent surface and an incident surface, wherein the emergent surface is planar, the incident surface is free-form surface, a rectangular coordinate system OXYZ is established by taking the plane parallel to the emergent surface and passing through the LED light source as an XY plane and taking the LED light source as an O point, in the rectangular coordinate system OXYZ, the positive Y direction part of the incident surface is larger than or equal to the negative Y direction part, and the Z direction height of the incident surface changes along with the change of the included angle between the emergent light of the LED light source and a Y axis;
the light incident surface is symmetrical about a Y axis; or the light incident surface is symmetrical about an X axis and is symmetrical about a Y axis; or the incidence plane is a rotationally symmetric pattern;
in the ZOX section plane, the Z-direction height of the incident plane decreases with the increase of the absolute value of the X coordinate; when the included angle between the emergent light and the X axis is in the range of 0-30 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 90 degrees to 110 degrees; when the included angle between the emergent light and the X axis is in the range of 30-70 degrees, the included angle between the tangent of the incident surface and the positive Z axis is reduced from 110 degrees to 105 degrees; when the included angle between the emergent light and the X axis is in the range of 70-90 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 105 degrees to 140 degrees.
2. The LED street lamp lens unit according to claim 1, wherein when the light incident surface is symmetrical about a Y axis, in a ZOY section plane, the Z-direction height of the incident surface increases as a Y coordinate decreases in a range where the exit light and Y axis included angles are in a range of 0 to 30 degrees and 70 to 130 degrees, and the Z-direction height of the incident surface decreases as a Y coordinate decreases in a range where the exit light and Y axis included angles are in a range of 30 to 70 degrees and 130 to 180 degrees.
3. The LED street lamp lens unit according to claim 1, wherein the incident surface is a curved surface in a ZOY section when the incident surface is symmetrical about an X axis while being symmetrical about a Y axis.
4. The LED street lamp lens unit according to claim 1, wherein when the incident surface is a rotationally symmetric pattern, a Z-direction height of the incident surface decreases as an absolute value of a Y-coordinate increases within a ZOY section.
5. The LED street lamp lens unit according to claim 4, wherein the included angle of the tangent of the incident surface with the positive Z axis increases from 90 degrees to 110 degrees within the range of 0 to 30 degrees of the included angle of the emergent light with the Y axis; when the included angle between the emergent light and the Y axis is in the range of 30-70 degrees, the included angle between the tangent of the incident surface and the positive Z axis is reduced from 110 degrees to 105 degrees; and when the included angle between the emergent light and the Y axis is in the range of 70-90 degrees, the included angle between the tangent of the incident surface and the positive Z axis is increased from 105 degrees to 140 degrees.
6. The LED street lamp lens unit according to claim 1, wherein the LED street lamp lens unit is a total reflection lens.
7. An LED street lamp lens module, characterized by comprising a housing and a plurality of LED street lamp lens units as claimed in any one of claims 1 to 6 fixed in the housing.
8. The LED street lamp lens module as claimed in claim 7, wherein the LED street lamp lens units are arranged in a lens array, and the incident surface of each LED street lamp lens unit is inclined to the same direction to distribute light.
9. A street lamp, characterized by comprising a driving module and the LED street lamp lens module as claimed in any one of claims 7 to 8, wherein the driving module is arranged in a housing and drives the LED light source corresponding to the LED street lamp lens module to emit light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338983.4A CN105156990B (en) | 2015-06-17 | 2015-06-17 | LED street lamp lens unit, LED street lamp lens module and street lamp with LED street lamp lens module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510338983.4A CN105156990B (en) | 2015-06-17 | 2015-06-17 | LED street lamp lens unit, LED street lamp lens module and street lamp with LED street lamp lens module |
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| CN105156990A CN105156990A (en) | 2015-12-16 |
| CN105156990B true CN105156990B (en) | 2021-09-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087839A (en) * | 2017-12-05 | 2018-05-29 | 厦门佰明光电股份有限公司 | Vehicle side-marker lamp and its lens |
| CN108826121A (en) * | 2018-08-03 | 2018-11-16 | 佛山市南海区协隆电器有限公司 | A kind of small size starry sky projector |
| CN215446118U (en) * | 2021-01-27 | 2022-01-07 | 棱式责任有限公司 | Lighting device and workbench |
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| CN204730118U (en) * | 2015-06-17 | 2015-10-28 | 欧普照明股份有限公司 | LED street lamp lens unit, module and there is the street lamp of this LED street lamp lens module |
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| CN101986018A (en) * | 2010-11-03 | 2011-03-16 | 吴峰 | Wide light distribution angle lens unit and module of light-emitting diode street lamp |
| CN103206667A (en) * | 2012-01-16 | 2013-07-17 | 欧司朗股份有限公司 | Lens and illumination device using lens |
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Effective date of registration: 20230614 Address after: 215211 building a, Oupu Industrial Park, Fenyang Road, FENHU Economic Development Zone, Wujiang District, Suzhou City, Jiangsu Province Patentee after: SUZHOU OPPLE LIGHTING Co.,Ltd. Patentee after: OPPLE LIGHTING Co.,Ltd. Address before: 201201, room 1, building 6111, 411 East Dragon Road, Shanghai, Pudong New Area Patentee before: OPPLE LIGHTING Co.,Ltd. |