CN111322584A - Lenses and Lighting Units - Google Patents

Abstract

The invention provides a lens and a lighting device, the lens comprises: a light condensing portion, a light diffusing portion, and an installation portion; the peripheral wall of the light-gathering part is a total reflection surface, the bottom of the light-gathering part is provided with a first cavity which is concave upwards, the inner surface of the first cavity comprises a first top surface and a first side surface, the first side surface surrounds the first top surface, and a first light source is suitable for being placed below the first cavity; the light scattering part is obliquely arranged and surrounds the light focusing part, the light scattering part is provided with a first curved surface and a second curved surface which are convex outwards, and the first curved surface is arranged towards the peripheral wall of the light focusing part and is a reflecting surface; the installation department ring is located the second curved surface, and the internal surface of installation department and second curved surface inject the second cavity jointly, and the below of second cavity is suitable for placing the second light source. Therefore, the lighting effect is improved, the wide-area beam angle is realized, and the functions of zooming, directional key illumination, wide-direction basic illumination and extensive-direction environment illumination of the illuminating device are achieved.

Description

Lenses and Lighting Units

technical field

The present invention relates to the technical field of lighting, in particular to a lens and a lighting device.

Background technique

With the continuous improvement of living standards, people's requirements for light quality are getting higher and higher. Starting from protecting human eye health and improving lighting effects, lamps with different angles are required to achieve uniform lighting effects for different occasions.

At present, the conventional LED light distribution on the market is roughly cosine distribution, also known as Lambertian luminescence. The light emitted by the LED without any optical treatment is difficult to meet the lighting needs, so it is necessary to carry out secondary light distribution to the LED or even more Secondary light distribution design. However, the lamps in the related art have low light efficiency after secondary light distribution. The same lamp needs to be designed with multiple optical lenses to meet customer requirements for different beam angles.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the technical problems in the above technologies at least to a certain extent. To this end, the first object of the present invention is to provide a lens.

The second object of the present invention is to provide a lighting device.

In order to achieve the above object, the present invention provides a lens in a first aspect, which includes:

a light-concentrating part, the peripheral wall of the light-concentrating part is a total reflection surface, the bottom of the light-concentrating part has a first cavity concave upward, and the inner surface of the first cavity includes a first top surface and a first cavity The side surface, the first side surface surrounds the first top surface, a first light source is suitable for placing a first light source under the first cavity, and at least part of the light emitted by the first light source is refracted by the first top surface from The upper surface of the light collecting part is emitted, and at least part of the light is refracted by the first side surface and then reaches the total reflection surface for reflection and then emitted from the upper surface of the light collecting part;

a light-scattering part, the light-scattering part is arranged obliquely and surrounds the light-gathering part, the light-scattering part has a first curved surface and a second curved surface that protrude outwards, the first curved surface is arranged toward the peripheral wall of the light-gathering part and is a reflective surface;

an installation part, the installation part is arranged around the second curved surface, the inner surface of the installation part and the second curved surface together define a second cavity, and the lower part of the second cavity is suitable for placing the second cavity a light source, at least part of the light emitted by the second light source is refracted by the second top surface of the second cavity and then emitted from the second curved surface, and at least part of the light is refracted from the second top surface A curved surface is emitted, and at least part of the light rays are refracted by the second top surface and then reach the first curved surface for reflection and then emitted from the second curved surface.

According to the lens of the present invention, through the arrangement of the condensing part and the astigmatism part, it can realize the directional condensing in the middle, and the peripheral diffused light widely, realize the single control and the combined control of the light, and can shape the gradient and Contrast, thereby improving light efficiency and achieving a wide beam angle.

In addition, the lens according to the above embodiments of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the outer surface of the mounting portion is provided with a sawtooth structure, and the sawtooth structure is suitable for being assembled on the light source bracket and enables the connection position of the mounting portion and the light source bracket to be adjustable. Therefore, the zoom function of the lens can be realized, and the zoom can be realized by the ratio of the reflected light and the refracted light, instead of actively losing the light energy to realize the zoom, and further improving the light efficiency. In addition, the operation of zooming through the sawtooth structure is convenient, the adjustment precision is high, and the combination form with the lamp body is relatively flexible.

According to an embodiment of the present invention, the upper end of the first side surface is connected to the edge of the first top surface, and the first top surface is formed as a downwardly protruding curved surface.

According to an embodiment of the present invention, the condensing portion is in a bowl shape, and the total reflection surface of the concentrating portion is formed as an inclined surface extending obliquely from bottom to top toward a direction away from the center of the condensing portion, and the inclined surface is an inclined plane or an outwardly convex curved surface; the upper surface of the light collecting part is formed as a middle upwardly convex curved surface, and a downwardly convex curved surface at the edge, wherein the area of the middle upwardly convex curved surface is the same as that of the first corresponding to the top.

According to an embodiment of the present invention, a connecting portion is further included, one end of the connecting portion is connected to the total reflection surface of the light condensing portion, and the other end is connected to the first curved surface of the light diffusing portion.

According to an embodiment of the present invention, both the upper surface and the lower surface of the connecting portion are formed as upwardly convex curved surfaces.

According to an embodiment of the present invention, the first curved surface is formed as an inclined surface extending obliquely from bottom to top toward a direction away from the light concentrator, and the second curved surface is formed from bottom to top and toward the light concentrator. A slope extending obliquely in the direction of the top.

According to an embodiment of the present invention, the second top surface is formed as an upwardly protruding inclined curved surface.

According to an embodiment of the present invention, the condensing part, the diffusing part and the connecting part are integrally formed.

In order to achieve the above object, the present invention provides an illuminating device in a second aspect embodiment, which includes the above-mentioned lens.

According to the lighting device of the embodiment of the present invention, through the arrangement of the above-mentioned lens, it provides a kind of high light efficiency, double zoom, wide beam angle, achieves the functions of directional accent lighting, wide basic lighting and general ambient lighting, and makes The installation of the lighting device is flexible and the cost is reduced.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

1 is a cross-sectional view of a lens according to the present invention;

2 is a schematic structural diagram of a lens according to an embodiment of the present invention;

3 is a schematic structural diagram of another viewing angle of a lens according to an embodiment of the present invention;

Description of reference numbers:

lens 1;

the light collecting part 100, the peripheral wall 101, the first cavity 102, the first top surface 1021, the first side surface 1022, and the upper surface 103;

the astigmatism part 200, the first curved surface 201, the second curved surface 202;

the mounting part 300, the sawtooth structure 301;

the second cavity 400, the second top surface 401;

Connection part 500 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

For better understanding of the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

The implementation of a lens provided by the present invention will be described in detail below with reference to FIGS. 1 to 3 . Among them, the lens 1 can be used in a lighting device, such as an LED lamp. In the following description of the present application, the lens 1 is used for an LED lamp as an example for description. Of course, those skilled in the art can understand that the lens 1 can also be used for other types of lighting devices, not limited to LED lamps. Among them, the arrow in the figure is the direction of the light.

As shown in FIG. 1 , a lens 1 according to an embodiment of the first aspect of the present invention includes a condensing part 100 , a diffusing part 200 and a mounting part 300 . Among them, the lens 1 is assembled in the lamp body through the light source bracket, which can change the direction of the light emitted by the light source, so that the lamp can achieve directional key lighting, broad basic lighting, and general ambient lighting.

Specifically, the peripheral wall 101 of the light collecting part 100 is a total reflection surface, the bottom of the light collecting part 100 has a first cavity 102 concave upward, and the inner surface of the first cavity 102 includes a first top surface 1021 and a first cavity 102 . Side 1022, the first side 1022 surrounds the first top surface 1021, the first light source (not shown) is suitable for placing under the first cavity 102, and at least part of the light emitted by the first light source is refracted by the first top surface 1021 from The light is emitted from the upper surface 103 of the light collecting part 100 , and at least part of the light is refracted by the first side surface 1022 and then reaches the total reflection surface 101 for reflection and then exits from the upper surface 103 of the light collecting part 100 . Wherein, the bottom of the first cavity 102 is suitable for placing the first light source. The first light source may be an RGB light source with a circular exit surface. The RGB light source may include a light-emitting chip and a sealant disposed on the light-emitting chip. Since the sealant has a diffusing effect, the optical fibers emitted by the light-emitting chip will diffuse through the sealant. , that is, the light transmitted by the first light source to the lens 1 is actually a diffused secondary light source. It can be understood that the specific shape and type of the first light source can be specifically set according to actual requirements, so as to better meet the actual requirements. In addition, at least part of the light emitted by the first light source is refracted by the first top surface 1021 and then emitted from the upper surface 103 of the light collecting portion 100 , for example, emitted approximately vertically. Then, the outer peripheral surface 101 of the light collecting part 100 is a total reflection surface, and the light beam projected on the total reflection surface can be totally reflected and then emitted. In this way, the total reflection surface can totally reflect part of the light emitted by the first light source and then emit from the upper surface 103 of the light collecting part 100 , so that the light collecting part 100 has a light collecting effect and achieves a directional light collecting effect.

The astigmatism portion 200 is inclined and surrounds the light-gathering portion 100. The light-scattering portion 200 has a first curved surface 201 and a second curved surface 202 that protrude outward, and the first curved surface 201 is disposed toward the peripheral wall 101 of the light-gathering portion 100 and is a reflective surface; That is, the astigmatism part 200 is disposed on the periphery of the light condensing part 100, and its shape is similar to a ring-shaped lenticular mirror.

The mounting portion 300 is arranged around the second curved surface 202. The inner surface of the mounting portion 300 and the second curved surface 202 together define a second cavity 400. The second cavity 400 is suitable for placing a second light source. At least part of the light rays are refracted by the second top surface 401 of the second cavity 400 and then exit from the second curved surface 202; at least part of the light rays are refracted by the second top surface 401 and then exit from the first curved surface 201; After being refracted, 401 reaches the first curved surface 201 for reflection and then exits from the second curved surface 202 . It can be understood that the first curved surface 201 is semi-reflective, and when the light reaches the first curved surface 201 , part of the light can be emitted from the first curved surface 201 , and part of the light reaches the second curved surface 202 after being reflected by the first curved surface 201 . Therefore, the light diffusing portion 200 has a diffusing effect, and the light emitted by the second light source can be widely diffused. Then, the mounting part 300 is adapted to mount the lens 1 on the light source holder.

Therefore, through the cooperation of the condensing part 100 and the diffusing part 200, the intelligent control scheme of 1, 1, 1+1 can be matched to realize single control and combined control respectively. The LED light source adopts RGBW or other colors, and the color temperature (color) Blend or Contrast to shape gradations and contrasts of light.

Therefore, according to the lens 1 of the present invention, through the arrangement of the condensing part 100 and the diffusing part 200 , it is possible to realize the directional condensing in the middle, and the peripheral diffused light in a wide direction, so as to realize the single control and combined control of the light, and the fusion or contrast of the color temperature can Shape the gradation and contrast of light, thereby improving light efficiency and realizing wide-area beam angle to meet customer requirements for different beam angles.

In some examples, referring to FIG. 2 , the outer surface of the mounting part 300 is provided with a sawtooth structure 301 . The sawtooth structure 301 is suitable for assembling on the light source bracket and enables the connection position of the mounting part 300 and the light source bracket to be adjustable. Wherein, the sawtooth structure 301 and the light source bracket can drive the lens 1 to move up and down by the cooperation of the sliding groove to realize the step-type zooming. Therefore, the zoom function of the lens 1 can be realized, and the zoom can be realized by the ratio of reflected light and refracted light, instead of actively losing light energy to realize zoom, which can further improve the light efficiency and realize the change of the beam angle. In addition, the operation of zooming through the sawtooth structure 301 is convenient, the adjustment precision is high, and the combination form with the lamp body is relatively flexible.

In some examples, the upper end of the first side surface 1022 is connected to the edge of the first top surface 1021, and the first top surface 1021 is formed as a downwardly convex curved surface. At this time, the first top surface 1021 of the first cavity 102 acts like a convex lens, and the light projected on it is emitted in parallel along the axial direction of the first top surface 1021 of the first cavity 102, and then the first cavity 102 The axial direction of the first top surface 1021 coincides with the axial direction of the light collecting part 100 , so that the light can be projected to the upper surface 103 of the light collecting part 100 approximately vertically.

Optionally, the first top surface 1021 of the first cavity 102 may be formed as a smooth transition curved surface protruding downward. Its specific shape and structure can be specifically set according to actual requirements, as long as it is ensured that the light projected onto it can be approximately vertically emitted from the upper surface 103 of the light collecting part 100 after being refracted.

Optionally, the light collecting part 100 is a rotary structure. At this time, the condensing portion 100 has a central axis-symmetric structure. As a result, the processing is simple and the cost is low.

Optionally, the first side surface 1022 of the first cavity 102 may be formed as a straight wall surface extending vertically in the up-down direction. Of course, the first side surface 1022 may also be formed as an inclined surface extending obliquely from top to bottom and toward a direction away from the center of the light collecting part 100 .

In some examples, the light collecting part 100 is in a bowl shape, and the total reflection surface 101 of the light collecting part 100 is formed as an inclined surface extending obliquely from the bottom to the top toward a direction away from the center of the light collecting part 100 , and the inclined surface is an inclined plane or outwardly convex The upper surface 103 of the light collecting part 100 is formed as a curved surface with an upwardly convex middle and a downwardly convex curved surface, wherein the area of the upwardly convex curved surface in the middle corresponds to the first top surface 1021 . That is to say, the total reflection surface 101 can reflect all the light projected thereon, and can effectively ensure that the light total reflected by the total reflection surface 101 can be well emitted from the upper surface 103 of the light collecting part 100 . Then, the middle area of the upper surface 103 is similar to the function of a convex lens, and the light projected thereon is emitted in parallel along the axial direction of the upper surface 103 . Then, the edge region of the upper surface 103 acts like a concave lens, and the light reflected by the total reflection surface 101 tends to be emitted vertically, so that the light condensing part 100 has the effect of directional light condensing.

In some examples, the first curved surface 201 is formed as an inclined surface extending obliquely from bottom to top toward a direction away from the light concentrating portion 100 , and the second curved surface 202 is formed as an inclined surface extending obliquely from bottom to top toward a direction close to the light concentrating portion 100 . . Therefore, the astigmatism portion 200 forms a ring-shaped lenticular structure, which can scatter the light projected on the first curved surface 201 and the second curved surface 202 , so that the astigmatic portion 200 has the effect of wide divergence.

In some examples, a connecting part 500 is further included, one end of the connecting part 500 is connected to the total reflection surface 101 of the light condensing part 100 , and the other end is connected to the first curved surface 201 of the diffusing part 200 . Thus, the light diffusing portion 200 can be inclined and disposed around the light condensing portion 100 through the connecting portion 500 .

The position where the connection portion 500 connects the total reflection surface 101 may be at 1/2 of the total reflection surface 101 and lower than the first top surface 1021 of the first cavity 102 , so that the light refracted from the first side surface 1022 is at The upper half of the total reflection surface 101 performs total reflection. Then, the position where the connection part 500 connects the first curved surface 201 may be at the end of the first curved surface 201 .

Optionally, both the upper surface and the lower surface of the connecting portion 500 are formed as upwardly convex curved surfaces, so that the inclination angle of the astigmatic portion 200 can be reasonably controlled, so that the light-condensing portion 100 and the astigmatic portion 200 can be smoothly transitioned.

Optionally, the condensing part 100 , the diffusing part 200 and the connecting part 500 are integrally formed. Thereby, the processing and assembly of the lens 1 are facilitated.

In addition, it can be understood that the second top surface 401 of the second cavity 400 is a curved surface in which the second curved surface 202 smoothly transitions to the inner wall surface of the mounting portion 300 .

In some examples, considering the overall zoom effect, the edge of the light spot is optimized by arranging two-dimensional uniform light microstructures (such as lattice patterns, flower debates, bead surfaces, etc.) on the refracted light exit surfaces (the upper surface 103 and the first curved surface 201) The light emitted by the lens of the condensing part is soft, and the central light intensity can be guaranteed.

In addition, by adjusting the distance between the light-emitting surface of the light source and the bottom of the lens 1, for example, during the distance change between the light source and the lens 1 distributed in the first cavity 102 in the process of changing the distance from 0.3 to 5 mm, the lens angle can be continuously changed from 15 to 100°. Variety. During the process of changing the distance between the light source and the lens 1 distributed in the second cavity 400 from 1.0 to 2.5 mm, the lens 1 can be continuously changed from 180 to 260°.

According to the lighting device of the second aspect of the present invention, through the arrangement of the above-mentioned lens 1, a high light efficiency, double zooming, wide beam angle is provided, and the functions of directional accent lighting, broad basic lighting and general ambient lighting are achieved, Moreover, the installation of the lighting device is flexible and the cost is reduced.

Other components of the lighting device according to the embodiments of the present invention may adopt existing structures, which will not be described in detail here.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A lens, characterized in that, comprising: a light-concentrating part, the peripheral wall of the light-concentrating part is a total reflection surface, the bottom of the light-concentrating part has a first cavity concave upward, and the inner surface of the first cavity includes a first top surface and a first cavity The side surface, the first side surface surrounds the first top surface, a first light source is suitable for placing a first light source under the first cavity, and at least part of the light emitted by the first light source is refracted by the first top surface from The upper surface of the light collecting part is emitted, and at least part of the light is refracted by the first side surface and then reaches the total reflection surface for reflection and then emitted from the upper surface of the light collecting part; a light-scattering part, the light-scattering part is arranged obliquely and surrounds the light-gathering part, the light-scattering part has a first curved surface and a second curved surface that protrude outwards, the first curved surface is arranged toward the peripheral wall of the light-gathering part and is a reflective surface; an installation part, the installation part is arranged around the second curved surface, the inner surface of the installation part and the second curved surface together define a second cavity, and the lower part of the second cavity is suitable for placing the second cavity a light source, at least part of the light emitted by the second light source is refracted by the second top surface of the second cavity and then emitted from the second curved surface, and at least part of the light is refracted from the second top surface A curved surface is emitted, and at least part of the light rays are refracted by the second top surface and then reach the first curved surface for reflection and then emitted from the second curved surface. 2 . The lens according to claim 1 , wherein the outer surface of the mounting portion is provided with a sawtooth structure, and the sawtooth structure is suitable for being assembled on the light source bracket and making the connection position between the mounting portion and the light source bracket. 3 . Adjustable. 3 . The lens of claim 1 , wherein an upper end of the first side surface is connected to an edge of the first top surface, and the first top surface is formed as a downwardly convex curved surface. 4 . 4 . The lens according to claim 1 , wherein the condensing portion is in a bowl shape, and the total reflection surface of the condensing portion is formed to be inclined from bottom to top in a direction away from the center of the condensing portion. 5 . The extended inclined surface, the inclined surface is an inclined plane or an outwardly convex curved surface; the upper surface of the light collecting part is formed as a middle upwardly convex curved surface, and a downwardly convex curved surface at the edge, wherein the middle upwardly convex curved surface is formed. The area of the curved surface corresponds to the first top surface. 5 . The lens of claim 1 , further comprising a connecting portion, one end of the connecting portion is connected to the total reflection surface of the light collecting portion, and the other end is connected to the first curved surface of the diffusing portion. 6 . 6 . The lens of claim 5 , wherein the upper surface and the lower surface of the connecting portion are both formed as upwardly convex curved surfaces. 7 . 7 . The lens according to claim 1 , wherein the first curved surface is formed as an inclined surface extending obliquely from bottom to top toward a direction away from the condensing portion, and the second curved surface is formed from bottom to top. 8 . an inclined surface extending obliquely toward the direction close to the light collecting part. 8. The lens of claim 1, wherein the second top surface is formed as an upwardly convex inclined curved surface. 9 . The lens of claim 5 , wherein the condensing portion, the diffusing portion and the connecting portion are integrally formed. 10 . 10. A lighting device, characterized by comprising the lens according to any one of claims 1-9.

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