CN110726119B - Lens unit, lens and lamp - Google Patents
Lens unit, lens and lamp Download PDFInfo
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- CN110726119B CN110726119B CN201911199793.3A CN201911199793A CN110726119B CN 110726119 B CN110726119 B CN 110726119B CN 201911199793 A CN201911199793 A CN 201911199793A CN 110726119 B CN110726119 B CN 110726119B
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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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The application relates to a lens unit, a lens and a lamp. The lens unit is arranged corresponding to the light source, one surface of the lens unit is provided with a light-emitting groove, and the inner wall of the light-emitting groove is a first light-emitting surface; the normal section of the first light-emitting surface is a first arc-shaped line, the light-emitting groove is arranged towards the light source, and the relative position of the lens unit and the light source is adjustable; the surface of the lens unit, which is far away from the surface provided with the light emergent grooves, is a second light emergent surface, the second light emergent surface corresponds to the first light emergent surface, and the normal section of the second light emergent surface is a second arc-shaped line; at different normal cross-sectional positions of the lens unit. When the lens unit is adjusted to different positions relative to the light source along the position adjusting direction, the light-emitting angles of the light source are different, different light-emitting angle adjustment of the lamp is achieved, different light distribution angle requirements are met, the requirement that different light distribution angles are achieved by replacing different secondary lenses of a traditional lamp is avoided, and the problems that the cost of a mold is high and the timeliness is low are solved.
Description
Technical Field
The present application relates to the field of lighting technologies, and in particular, to a lens unit, a lens, and a lamp.
Background
With the rapid development of LED light sources in the illumination field, the LED light sources are widely applied to the illumination field by the advantages of long service life, low energy consumption, environmental protection and the like. Among them, the optical system is the most important component of the LED lamp, and it is required to satisfy the lighting requirements of various areas. The optical system of the LED lamp generally adopts a secondary lens to perform light distribution optimization on light emitted from the LED lamp, so that when the light is irradiated to a surface to be irradiated, the effects of higher irradiation uniformity and wider irradiation distribution area can be achieved.
However, the above-mentioned secondary lens and the LED light source are combined in a one-to-one manner, so that the LED lamp can only achieve the illumination effect of one light distribution angle. In order to achieve a better lighting effect, different light distribution angle requirements are achieved by replacing different secondary lenses in the using process of the lamp, so that on one hand, the cost of a lens mold is high, on the other hand, time is wasted, and even if the timeliness of the lamp is low.
Disclosure of Invention
In view of the above, it is desirable to provide a lens unit, a lens and a lamp, which address the problems of high cost and low timeliness of the lens mold.
A lens unit is used for being arranged corresponding to a light source, one surface of the lens unit is provided with a light-emitting groove, and the inner wall of the light-emitting groove is a first light-emitting surface; the normal section of the first light emitting surface is a first arc-shaped line, the light emitting groove is used for being arranged towards the light source, and the relative position of the lens unit and the light source is adjustable;
one surface of the lens unit, which is far away from the surface provided with the light emergent groove, is a second light emergent surface, the second light emergent surface corresponds to the first light emergent surface, and the normal section of the second light emergent surface is a second arc-shaped line; the relative positions of the first arc-shaped line and the second arc-shaped line are different at different normal cross-section positions of the lens unit so as to form different light-emitting angles;
wherein a normal plane perpendicular to a position adjustment direction of the lens unit is a normal cross section.
In one embodiment, the extending direction of the light-emitting groove coincides with the position adjusting direction of the lens unit, so that the lens unit can be adjusted to different positions corresponding to the light source along the position adjusting direction, and the light source refracts different light rays through different positions of the lens unit, thereby realizing the continuity of light-emitting of the lens unit.
In one embodiment, the second light emitting surface is an arc-shaped curved surface structure, so that the second light emitting surface has a better light emitting effect, and meanwhile, the light rays pass through the second light emitting surface of the lens unit and are refracted to form light rays with different angles at different positions of the same normal cross section position, so that the irradiation angle range of the lamp is improved.
In one embodiment, the light exit angle of the normal section of one end of the lens unit is larger than the light exit angle of the normal section of the other end of the lens unit, and the light exit angle of the lens unit decreases from the end of the maximum light exit angle to the end of the minimum light exit angle, so that the corresponding light exit angle decreases or increases during the adjustment of the lens unit along the position adjustment direction.
In one embodiment, the light-emitting angle range of the lens unit is 120-135 degrees, so that the light-emitting angle range of the lens unit is larger.
A lens comprises a plurality of lens units in any one of the above embodiments, wherein the lens units are connected together, so that the light-emitting angles of the lens units can be synchronously adjusted.
In one embodiment, the lens units are connected in sequence to form an annular structure, so that the lens can be adjusted along the position adjusting direction in a rotating mode, and the convenience of position adjustment of the lens is improved.
In one embodiment, two adjacent lens units are symmetrically arranged around the normal section, so that the two adjacent lens units are symmetrically connected to form the light emitting lens of one light source, and the lens can be adjusted along the positive direction and the negative direction of the position adjusting direction of the lens units, so that the light emitting angle of the light source can be increased or decreased.
In one embodiment, the lens further comprises a fixing frame, and at least one lens unit is connected with the fixing frame, so that the plurality of lens units move along the fixing frame when being adjusted along the position adjusting direction.
A lamp comprises a light source and the lens in any embodiment, the light-emitting groove is arranged towards the light source, and the relative position of the lens unit and the light source is adjustable.
In the lens unit, the lens and the lamp, the light-emitting groove is formed in one surface of the light-transmitting unit, the light-emitting groove faces the light source, the inner wall of the light-emitting groove is a first light-emitting surface, the surface of the lens unit, which is away from the light-emitting groove, is a second light-emitting surface, and the second light-emitting surface corresponds to the first light-emitting surface, so that light emitted by the light source can be refracted and emitted through the first light-emitting surface and the second light-emitting surface in sequence, and the light emission of the lamp is realized; because at the different normal direction cross section positions of lens unit, the relative position of first arc line and second arc line is different, the light source refracts out in order to form different light-emitting angles through the inner wall position of the light-emitting groove that different normal direction cross section positions correspond like this, when lens unit is adjusted to different positions for the light source along the position control direction like this, the light-emitting angle of light source is different, realize the different light-emitting angle regulation of lamps and lanterns, in order to satisfy different grading angle requirements, the requirement that traditional lamps and lanterns realized different grading angles through changing different secondary lens has been avoided, the problem that the mould cost is higher and the timeliness is lower has been solved.
Drawings
Fig. 1 is a schematic structural diagram of a lamp according to an embodiment;
FIG. 2 is a schematic view of a lens unit of a lens of the lamp shown in FIG. 1;
FIG. 3 is a schematic view of another angle of view of the lens unit shown in FIG. 2;
FIG. 4 is a schematic diagram of light extraction in a normal cross-section of the lens unit shown in FIG. 2 at a maximum light extraction angle position;
FIG. 5 is a schematic light-extraction diagram in normal cross-section for an intermediate light-extraction angle position of the lens unit shown in FIG. 2;
FIG. 6 is a schematic diagram of light extraction from a normal cross-section of the lens unit shown in FIG. 2 at a minimum extraction angle position;
FIG. 7 is a corresponding lens spot diagram for a normal cross-section of the maximum exit angle position of the lens unit shown in FIG. 4;
FIG. 8 is a corresponding lens light distribution plot for a normal cross-section of the maximum exit angle position of the lens unit shown in FIG. 4;
FIG. 9 is a corresponding lens spot diagram for a normal cross-section of the minimum exit angle position of the lens unit shown in FIG. 6;
FIG. 10 is a corresponding lens light distribution plot for a normal cross-section of the minimum exit angle position of the lens unit shown in FIG. 6;
FIG. 11 is a corresponding lens spot diagram for a normal cross-section of the intermediate exit angle position of the lens unit shown in FIG. 5;
FIG. 12 is a corresponding lens light distribution plot for a normal cross-section of an intermediate exit angle position of the lens unit shown in FIG. 5;
fig. 13 is a schematic view of a lens cell group in which two adjacent lens cells shown in fig. 2 are symmetrically arranged with respect to a normal cross section.
Detailed Description
To facilitate an understanding of the present application, the lens unit, the lens and the luminaire will be described more fully below with reference to the related drawings. Preferred embodiments of the lens unit, lens and luminaire are shown in the figures. However, the lens unit, lens and luminaire may be implemented in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the lens units, lenses, and light fixtures is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, a lens unit is arranged corresponding to a light source, one surface of the lens unit is provided with a light-emitting groove, and the inner wall of the light-emitting groove is a first light-emitting surface; the normal section of the first light emitting surface is a first arc-shaped line, the light emitting groove is used for being arranged towards the light source, and the relative position of the lens unit and the light source is adjustable; one surface of the lens unit, which is far away from the surface provided with the light emergent groove, is a second light emergent surface, the second light emergent surface corresponds to the first light emergent surface, and the normal section of the second light emergent surface is a second arc-shaped line; the relative positions of the first arc-shaped line and the second arc-shaped line are different at different normal cross-section positions of the lens unit so as to form different light-emitting angles; wherein a normal plane perpendicular to a position adjustment direction of the lens unit is a normal cross section.
As shown in FIG. 1, a luminaire 10 of an embodiment includes a light source 200 and a lens 100. The lens 100 is disposed on the light source 200, and the light emitted from the light source 200 can be refracted out through the lens 100. In the present embodiment, the light fixture 10 is a garden light. In one embodiment, the lens 100 includes a plurality of lens units 110, and the lens units 110 are connected together, so that the light-emitting angles of the lens units 110 can be adjusted synchronously. In the present embodiment, a plurality of lens units 110 are connected together to form a closed structure. In one embodiment, the lens units 110 are sequentially connected to form a ring structure, so that the lens 100 can be adjusted along the position adjustment direction in a rotating manner, and the convenience of the position adjustment of the lens 100 is improved. In other embodiments, the sequential connection of the lens units 110 is not limited to forming a ring structure, but may form a rectangular structure or other polygonal structures. In other embodiments, the plurality of lens units may be connected in sequence without forming a closed structure. In another embodiment, a plurality of lens units are connected in series to form an arc-shaped structure.
In one embodiment, each lens unit 110 is disposed corresponding to the light source 200, so that the light emitted from the light source 200 can be refracted out through the lens unit 110. As shown in fig. 2 and fig. 3, in an embodiment, one surface of each lens unit 110 is provided with a light exit groove 112, and an inner wall of the light exit groove 112 is a first light exit surface. The normal section of the first light emitting surface is a first arc line 112a, the light emitting groove 112 faces the light source 200, and the relative position between the lens unit 110 and the light source 200 is adjustable, so that the light source 200 can be adjusted to different relative positions with respect to the lens unit 110.
As shown in fig. 2 and 3, the normal cross section is a normal plane perpendicular to the position adjustment direction of the lens unit 110, that is, the normal cross section is a cross section perpendicular to the position adjustment direction of the lens unit 110. In the present embodiment, the relative positions of the lens unit 110 and the light source 200 are adjusted by rotation. It is understood that in other embodiments, the relative positions of the lens unit 110 and the light source 200 can be adjusted by means of translation. The first arc line 112a has different shapes for the normal cross sections at different positions of the first light emitting surface.
As shown in fig. 2 and fig. 3, in an embodiment, a surface of each lens unit 110 away from the surface having the light exit groove 112 is a second light exit surface 114. The second light emitting surface 114 corresponds to the first light emitting surface, so that the light emitted from the light source 200 sequentially passes through the first light emitting surface and the second light emitting surface 114 to be refracted out. In one embodiment, a normal cross section of the second light emitting surface 114 is a second arc line 114 a. The relative positions of the first arc line 112a and the second arc line 114a are different at different normal cross-sectional positions of the lens unit 110 to form different light-emitting angles. The shapes of the second arc lines 114a are different for the normal cross sections of the second light emitting surface 114 at different positions.
Because the light-emitting groove 112 is formed on one side of the light-transmitting unit, the light-emitting groove 112 faces the light source 200, the inner wall of the light-emitting groove 112 is a first light-emitting surface, the surface of the lens unit 110 away from the light-emitting groove 112 is a second light-emitting surface 114, and the second light-emitting surface 114 corresponds to the first light-emitting surface, light emitted by the light source 200 can be refracted and emitted through the first light-emitting surface and the second light-emitting surface 114 in sequence, so that the light-emitting of the lamp 10 is realized. Because the relative positions of the first arc-shaped line 112a and the second arc-shaped line 114a are different at different normal cross-sectional positions of the lens unit 110, the light source 200 is refracted out through the inner wall positions of the light-emitting grooves 112 corresponding to the different normal cross-sectional positions to form different light-emitting angles, so that when the lens unit 110 is adjusted to different positions relative to the light source 200 along the position adjusting direction, the light-emitting angles of the light source 200 are different, thereby realizing different light-emitting angle adjustment of the lamp 10, so as to meet different light distribution angle requirements, avoiding the requirement that the traditional lamp 10 realizes different light distribution angles by replacing different secondary lenses, and solving the problems of high cost and low timeliness of the mold.
In one embodiment, the extending direction of the light exit groove 112 coincides with the position adjusting direction of the lens unit 110, so that the lens unit 110 can be adjusted to different positions corresponding to the light source 200 along the position adjusting direction, and thus the light source 200 refracts different light rays through different positions of the lens unit 110, and the continuity of the light exit of the lens unit 110 is realized. In one embodiment, the extending direction of the light exit groove 112 is a curved direction. In the present embodiment, the extending direction of the light exit groove 112 is an arc direction, i.e., a circular arc direction in which the light exit groove 112 extends along the circumferential direction of the lens 100. It is understood that, in other embodiments, the extending direction of the light exit groove 112 is not limited to the circular arc direction, but may be a non-circular arc direction. In one embodiment, the light exit groove 112 may extend in an irregular closed curve direction.
As shown in fig. 2, in order to increase the irradiation angle range of the lamp 10, in one embodiment, the second light emitting surface 114 is an arc-shaped curved surface structure, so that the second light emitting surface 114 has a better light emitting effect, and meanwhile, the light rays refract different angles of light rays at different positions of the same normal cross-sectional position through the second light emitting surface 114 of the lens unit 110, thereby increasing the irradiation angle range of the lamp 10.
As shown in fig. 3, in one embodiment, the light exit angle of the normal section of one end of the lens unit 110 is greater than the light exit angle of the normal section of the other end of the lens unit 110. Referring to fig. 4 to 6 together, the light exit angle of the lens unit 110 decreases from the end of the maximum light exit angle to the end of the minimum light exit angle, such that the corresponding light exit angle decreases or increases during the adjustment of the lens unit 110 in the position adjustment direction.
In one embodiment, the light-emitting angle range of the lens unit 110 is 120 ° to 135 °, so that the light-emitting angle range of the lens unit 110 is large. As shown in fig. 4, in an embodiment, the maximum light-emitting angle of the lens unit 110 is 135 °. When the maximum light-emitting angle position of the lens unit 110 is adjusted in the position adjustment direction to correspond to the light-emitting direction of the light source 200, the light-emitting angle of the lens unit 110 is maximum. In this embodiment, when the light-emitting angle of one of the lens units 110 is adjusted to be maximum, the light-emitting angles of the other lens units 110 are simultaneously adjusted to be maximum, at this time, the light-emitting angle of the whole lens 100 structure is maximum, the light spot pattern of the lens unit at this time is as shown in fig. 7, and the light distribution curve of the corresponding lens unit is as shown in fig. 8.
In one embodiment, the minimum light-emitting angle of the lens unit 110 is 120 °. As shown in fig. 6, when the minimum light exit angle position of the lens unit 110 is adjusted in the position adjustment direction to correspond to the light exit direction of the light source 200, the light exit angle of the lens unit 110 is minimum. In this embodiment, when the light-exiting angle of one of the lens units 110 is adjusted to be minimum, the light-exiting angles of the other lens units 110 are simultaneously adjusted to be minimum, at this time, the light-exiting angle of the whole lens 100 structure is minimum, the light spot pattern of the lens unit at this time is as shown in fig. 9, and the light distribution curve diagram of the corresponding lens unit is as shown in fig. 10. In an embodiment, the normal cross-section corresponding to the minimum light-emitting angle position of the lens unit 110 is two concentric semicircular structures, that is, the first arc-shaped line and the second arc-shaped line of the normal cross-section corresponding to the minimum light-emitting angle position of the lens unit 110 are both semicircular arc-shaped lines. It is understood that in other embodiments, the normal cross-section corresponding to the minimum light-exiting angle position of the lens unit 110 is not limited to two concentric semicircular structures.
As shown in fig. 5, in an embodiment, there is an intermediate light exit angle between the minimum light exit angle and the maximum light exit angle of the lens unit 110. When the light exit angle is adjusted to an intermediate light exit angle between the maximum light exit angle position and the minimum light exit angle position of the lens unit 110 in the position adjustment direction of the lens unit 110, the light exit angle of the lens unit 110 is 127.5 °, and the light exit angle of the lens unit 110 at this time is the intermediate light exit angle. In this embodiment, when the light-emitting angle of one of the lens units 110 is adjusted to 127.5 °, and the light-emitting angles of the other lens units 110 are simultaneously adjusted to 127.5 °, the light-emitting angle of the entire lens 100 structure is 127.5 °, the light spot pattern of the lens unit at this time is as shown in fig. 11, and the light distribution curve of the corresponding lens unit is as shown in fig. 12.
It is understood that in other embodiments, the light-emitting angle range of the lens unit 110 is not limited to 120 ° to 135 °. That is, the maximum light-exiting angle of the lens unit 110 is not limited to 135 °, and similarly, the minimum light-exiting angle of the lens unit 110 is not limited to 120 °, and both the maximum light-exiting angle and the minimum light-exiting angle of the lens unit 110 can be changed by adjusting the structures of the respective positions of the lens units.
As shown in fig. 1 and 13, in one embodiment, two adjacent lens units 110 are symmetrically disposed about a normal cross section, and two adjacent lens units 110 are symmetrically connected to form a lens unit group 110a disposed opposite to one light source 200, so that the lens 100 can be adjusted along both the front and back directions of the position adjustment direction of the lens units 110, and the light emitting angle of the light source 200 can be increased or decreased. In the present embodiment, the ends of the normal cross sections of two adjacent lens units 110 with larger light-emitting angles are connected together, or the ends of the normal cross sections of two adjacent lens units 110 with smaller light-emitting angles are connected together, so that two adjacent lens units 110 are symmetrically arranged about the normal cross section. Because the areas of the normal cross sections at the two ends of each lens unit 110 are not equal, and the two adjacent lens units 110 are symmetrically arranged about the normal cross sections, the ends with the equal areas of the normal cross sections of the two adjacent lens units 110 can be connected together, so that the connection positions of the two adjacent lens units 110 are smooth, and the structure of the whole lens 100 is smooth and coherent. In the present embodiment, a plurality of lens units 110 are arrayed end to end along a closed circular track to form a ring-shaped full-page lens 100 structure.
As shown in FIG. 1, in one embodiment, the lens 100 further includes a holder 120, and at least one lens unit 110 is coupled to the holder 120 such that the plurality of lens units 110 move with the holder 120 when adjusted in the position adjustment direction. In one embodiment, the fixing frame 120 includes a fixing shaft 122 and a plurality of connecting plates 124, each having one end connected to the fixing shaft 122 and the other end connected to the lens unit 110. In the present embodiment, the number of the connection plates 124 is three. In one embodiment, the plurality of connection plates 124 are spaced along the circumference of the fixing shaft 122 to better connect the fixing frame 120 to the lens unit 110. In other embodiments, the number of connecting plates is not limited to three, but may be four or another number.
As shown in fig. 1, in one embodiment, the light exit groove 112 is disposed toward the light source 200, and the relative position of the lens unit 110 and the light source 200 is adjustable. In one embodiment, the number of light sources 200 is N. The number of the lens units 110 is 2N, and two adjacent lens units 110 are symmetrically disposed with respect to the normal cross section, that is, two adjacent lens units 100 constitute a lens unit group 110a, thus constituting N lens unit groups 110 a. The N lens unit groups 110a correspond to the N light sources 200 one to one, that is, each light source 200 is disposed corresponding to the corresponding lens unit group 110a, so that the light emitted from each light source 200 can be refracted to the outside through the lens unit group 110 a.
As shown in fig. 1, in one embodiment, the lamp 10 further includes a circuit board 300, and the N light sources 200 are disposed on the circuit board 300 at intervals along the circumference of the circuit board 300, so that the lamp 10 has a better lighting effect. In this embodiment, the circuit board 300 is a PCB, so that the thickness of the circuit board 300 is small. In one embodiment, the N light sources are all arranged on the same surface of the circuit board, so that the N light sources all emit light rays towards the same direction. In one embodiment, the lamp 10 further includes a heat sink 400, and the circuit board 300 is disposed on the heat sink 400, so that the heat sink 400 dissipates heat of the circuit board 300, and the heat dissipation performance of the lamp 10 is improved. In this embodiment, the circuit board is attached to the heat sink, so that the heat on the circuit board can be transferred to the heat sink for heat dissipation. In this embodiment, each light source is disposed on a surface of the circuit board away from the heat sink. In one embodiment, the lamp further comprises a heat-conducting adhesive layer, and the circuit board is adhered to the radiator through the heat-conducting adhesive layer, so that heat on the circuit board is quickly transferred to the radiator.
As shown in fig. 1, in one embodiment, the luminaire 10 further includes a rotating shaft 500, and the rotating shaft 500 is connected to the fixing frame 120. The circuit board 300 is formed with a first through hole 310, and the heat sink 400 is formed with a second through hole 410 communicating with the first through hole 310. The rotating shaft 500 is respectively located in the first through hole 310 and the second through hole 410, and the rotating shaft 500 is respectively rotatably connected with the circuit board 300 and the heat sink 400, so that the fixing frame 120 rotates along with the rotating shaft 500 relative to the circuit board 300, because the fixing frame 120 is connected with at least one lens unit 110, and the lens units 110 are connected into a whole, the N lens unit groups 110a all rotate along with the fixing frame 120, so that the N lens unit groups 110a all move relative to the corresponding light source 200, and each lens unit group 110a is adjusted to different positions relative to the light source 200 along the position adjusting direction, thereby realizing adjustment of different light-emitting angles of the lamp 10.
It can be understood that the rotating shaft 500 can be manually adjusted to adjust different light-emitting angles of the lamp 10 along the position adjusting direction. In other embodiments, the rotating shaft 500 can also be driven by power to adjust different light-emitting angles of the lamp 10 along the position adjusting direction. In one embodiment, the lamp 10 further includes a driving mechanism (not shown), and a power output end of the driving mechanism is connected to the rotating shaft 500, so that the driving mechanism drives the rotating shaft 500 to rotate relative to the heat sink 400 and the circuit board 300, respectively, to achieve automatic adjustment of different light-emitting angles of the lamp 10. In this embodiment, the driving mechanism includes a motor and a connecting shaft, one end of the connecting shaft is connected to the power output end of the motor, and the other end of the connecting shaft is connected to the rotating shaft 500, and when the motor drives the connecting shaft to rotate, the connecting shaft drives the rotating shaft 500 and the fixing frame 120 to rotate, so that the light-transmitting units rotate relative to the circuit board 300 along with the fixing frame 120, and thus each light-transmitting unit group moves relative to the corresponding light source 200, and the adjustment of the light-emitting angle of the lamp 10 is achieved. In other embodiments, the motor may be replaced by a rotary cylinder.
In one embodiment, the lamp 10 further includes an angle sensor (not shown) disposed on the shaft 500. The angle sensor measures the rotation angle of the rotating shaft 500 to measure the rotation angle of the rotating shaft 500 relative to the circuit board 300, so that the rotation angle of each lens unit group 110a along with the rotating shaft 500 is accurately controlled, and the requirements of different light-emitting angles of the lamp 10 are met.
In one embodiment, the lamp 10 further includes a controller (not shown), and the controller is electrically connected to the angle sensor and the control end of the driving mechanism respectively, so that the controller controls the driving mechanism to operate according to the angle data measured by the angle sensor, and the driving shaft 500 of the driving mechanism can accurately rotate to a predetermined angle, thereby achieving the corresponding light emitting effect required by the lamp 10.
In the lens unit 110, the lens 100 and the lamp 10, since the light-emitting groove 112 is formed on one side of the light-transmitting unit, the light-emitting groove 112 faces the light source 200, the inner wall of the light-emitting groove 112 is a first light-emitting surface, the surface of the lens unit 110 away from the light-emitting groove 112 is a second light-emitting surface 114, and since the second light-emitting surface 114 corresponds to the first light-emitting surface, the light emitted by the light source 200 can be refracted and emitted through the first light-emitting surface and the second light-emitting surface 114 in sequence, so as to realize the light emission of the lamp 10. Because the relative positions of the first arc-shaped line 112a and the second arc-shaped line 114a are different at different normal cross-sectional positions of the lens unit 110, the light source 200 is refracted out through the inner wall positions of the light-emitting grooves 112 corresponding to the different normal cross-sectional positions to form different light-emitting angles, so that when the lens unit 110 is adjusted to different positions relative to the light source 200 along the position adjusting direction, the light-emitting angles of the light source 200 are different, thereby realizing different light-emitting angle adjustment of the lamp 10, so as to meet different light distribution angle requirements, avoiding the requirement that the traditional lamp 10 realizes different light distribution angles by replacing different secondary lenses, and solving the problems of high cost and low timeliness of the mold.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (14)
1. A lens unit is used for being arranged corresponding to a light source and is characterized in that one surface of the lens unit is provided with a light emergent groove, and the inner wall of the light emergent groove is a first light emergent surface; the normal section of the first light emitting surface is a first arc-shaped line, the light emitting groove is used for being arranged towards the light source, and the relative position of the lens unit and the light source is adjustable;
one surface of the lens unit, which is far away from the surface provided with the light emergent groove, is a second light emergent surface, the second light emergent surface corresponds to the first light emergent surface, and the normal section of the second light emergent surface is a second arc-shaped line; the relative positions of the first arc-shaped line and the second arc-shaped line are different at different normal cross-section positions of the lens unit so as to form different light-emitting angles;
wherein a normal plane perpendicular to a position adjustment direction of the lens unit is a normal cross section.
2. The lens unit according to claim 1, wherein an extending direction of the light exit groove coincides with a position adjustment direction of the lens unit; or the extending direction of the light-emitting groove is a curve direction.
3. The lens unit of claim 2, wherein the light exit groove extends in an arc direction.
4. The lens unit of claim 2, wherein the light exit grooves extend in an irregular closed curve direction.
5. The lens unit of claim 1, wherein the second light emitting surface is an arc-shaped curved surface structure.
6. A lens unit according to any one of claims 1 to 5, characterized in that the light exit angle of the normal cross-section of one end of the lens unit is larger than the light exit angle of the normal cross-section of the other end of the lens unit, the light exit angle of the lens unit decreasing from the end of the largest light exit angle to the end of the smallest light exit angle.
7. The lens unit of claim 6, wherein the lens unit has a light exit angle ranging from 120 ° to 135 °.
8. A lens comprising a plurality of lens units according to any one of claims 1 to 7, the plurality of lens units being connected together.
9. The lens of claim 8, wherein a plurality of the lens units are connected in series to form a ring structure.
10. The lens of claim 9, wherein adjacent two of the lens cells are symmetrically disposed about the normal cross-section.
11. The lens of claim 8, further comprising a mount to which at least one of the lens units is attached.
12. The lens of claim 9, further comprising a mount to which at least one of the lens units is attached.
13. The lens of claim 10, further comprising a mount to which at least one of the lens units is attached.
14. A luminaire comprising a light source and the lens of any one of claims 8 to 13, wherein the light exit slot is disposed toward the light source, and wherein a relative position of the lens unit and the light source is adjustable.
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| CN201911199793.3A CN110726119B (en) | 2019-11-29 | 2019-11-29 | Lens unit, lens and lamp |
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| CN201911199793.3A CN110726119B (en) | 2019-11-29 | 2019-11-29 | Lens unit, lens and lamp |
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| CN110726119B true CN110726119B (en) | 2021-06-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210800746U (en) * | 2019-11-29 | 2020-06-19 | 广东洲明节能科技有限公司 | Lamp fitting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012150317A (en) * | 2011-01-20 | 2012-08-09 | Stanley Electric Co Ltd | Lens for lighting and luminaire |
| CN208687529U (en) * | 2018-09-14 | 2019-04-02 | 漳州立达信光电子科技有限公司 | A kind of adjustable lamps and lanterns of light-emitting angle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015105613B4 (en) * | 2015-04-13 | 2023-08-31 | Carl Zeiss Industrielle Messtechnik Gmbh | Reflected light illumination for a variable working distance |
| CN205878051U (en) * | 2016-06-27 | 2017-01-11 | 深圳福凯半导体技术股份有限公司 | Lamps and lanterns and changeable lens of light -emitting angle thereof |
| CN105953176A (en) * | 2016-06-27 | 2016-09-21 | 深圳福凯半导体技术股份有限公司 | Lamp and lens with variable light extraction angle |
| CN107654860B (en) * | 2017-10-31 | 2024-03-29 | 欧普道路照明有限公司 | Lens combination, light source module and lighting device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012150317A (en) * | 2011-01-20 | 2012-08-09 | Stanley Electric Co Ltd | Lens for lighting and luminaire |
| CN208687529U (en) * | 2018-09-14 | 2019-04-02 | 漳州立达信光电子科技有限公司 | A kind of adjustable lamps and lanterns of light-emitting angle |
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