CN216591547U - Down lamp optical system - Google Patents
Down lamp optical system Download PDFInfo
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- CN216591547U CN216591547U CN202122977562.XU CN202122977562U CN216591547U CN 216591547 U CN216591547 U CN 216591547U CN 202122977562 U CN202122977562 U CN 202122977562U CN 216591547 U CN216591547 U CN 216591547U
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- light
- fresnel lens
- lamp bead
- optical system
- emitting lamp
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Abstract
The utility model discloses a down lamp optical system, comprising: the LED lamp comprises a light-emitting lamp bead panel, a condensing lens group, a first Fresnel lens and a second Fresnel lens; the surface of the light-emitting lamp bead panel is provided with the condensing lens group and the first Fresnel lens respectively; the condenser lens group is arranged between the first Fresnel lens and the light-emitting lamp bead panel; the optical axis of the first Fresnel lens, the optical axis of the second Fresnel lens and the central axis of the light-emitting lamp bead panel are superposed; the smooth surface of the first Fresnel lens faces the direction of incident light, and the threaded surface of the first Fresnel lens faces the direction of emergent light; the smooth surface of the second Fresnel lens faces the incident light direction, and the threaded surface of the second Fresnel lens faces the emergent light direction. The utility model can enable the imaging light spot to form a circular light spot with uniform and soft color mixture and adjustable size.
Description
Technical Field
The utility model belongs to the technical field of lamp illumination, and particularly relates to a down lamp optical system.
Background
The down lamp, also called PAR lamp and beam lamp, is constructed by installing mirror surface bulb in the cylinder, also has the down lamp with reflection bowl containing bromine tungsten bulb, and its main characteristic is that it can emit more fixed beam, and the beam angle is more narrow and more, but the spot size can not be adjusted.
At present, the down lamp is generally the white light source, to the down lamp of white light source, only need consider the illuminance problem, so only need each luminous lamp pearl plus a leaded light post or lens spotlight, recycle lens with a plurality of light emitting area formation of image. But to colored down lamp, what prior art used more is that leaded light post or little lens will unify lamp pearl colour mixture more even, recycles lens and is in the same place a plurality of imaging surface formation of image.
However, the multi-luminous surface of the color down lamp has a defect that light spots are overlapped by a plurality of small light spots, so that the emergent light spots of the down lamp are not soft and uniform enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an optical system of a down lamp, so that imaging light spots are formed into circular light spots with uniform and soft color mixture and adjustable size.
In order to solve the above technical problem, the present invention provides a downlight optical system, including: the LED lamp comprises a light-emitting lamp bead panel, a condensing lens group, a first Fresnel lens and a second Fresnel lens;
the surface of the light-emitting lamp bead panel is provided with the condensing lens group and the first Fresnel lens respectively; the condenser lens group is arranged between the first Fresnel lens and the light-emitting lamp bead panel;
the optical axis of the first Fresnel lens, the optical axis of the second Fresnel lens and the central axis of the light-emitting lamp bead panel are superposed;
the smooth surface of the first Fresnel lens faces the incident light direction, and the threaded surface of the first Fresnel lens faces the emergent light direction;
the smooth surface of the second Fresnel lens faces the incident light direction, and the threaded surface of the second Fresnel lens faces the emergent light direction.
As a preferred scheme, the light-emitting lamp bead panel is of a central symmetrical structure and is provided with a plurality of round lamp holes which are the same in size and are uniformly arranged.
Preferably, the distance between every two circular lamp holes is 10 mm.
Preferably, the condenser lens group comprises a plurality of condenser lenses, and each condenser lens is arranged in the circular lamp hole of the light-emitting lamp bead panel.
As the preferred scheme, each circular lamp hole in the luminous lamp bead panel is internally provided with a colored lamp bead.
As the preferred scheme, the colored lamp beads are wide-space colored lamp beads.
As a preferred scheme, the light-emitting lamp bead panel is of a regular hexagon structure, a circular structure, an oval structure or a square structure.
The embodiment of the application has the following beneficial effects:
compared with the prior art, the optical system of the down lamp provided by the utility model can converge the emergent light source of the light-emitting lamp bead panel through the condensing lens group, so that the light path is prevented from leaking from the side surface, then the Fresnel lens is used for uniformly mixing emergent light near the focus of the Fresnel lens, then another Fresnel lens is used for obtaining uniform imaging surfaces with different sizes, and the light mixing and imaging effects of emergent light spots are further improved.
Drawings
Fig. 1 is a structural diagram of an optical system of a downlight according to an embodiment of the present invention;
fig. 2 is a structural diagram of a light-emitting lamp bead panel in an optical system of a down lamp provided by an embodiment of the utility model.
Wherein, the reference numbers of the specification are as follows:
1. a light-emitting lamp bead panel; 2. a condenser lens group; 3. a first Fresnel mirror; 4. a second Fresnel mirror.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that the embodiments described herein are only a few embodiments of the present invention, not all embodiments, and are not intended to limit the present invention. Other embodiments, which can be derived by those skilled in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1, which is a schematic diagram of an optical system of a downlight according to an embodiment of the present invention, including: luminous lamp pearl panel 1, condensing lens group 2, first fresnel lens 3 and second fresnel lens 4.
The surface of the light-emitting lamp bead panel 1 is provided with the condensing lens group 2 and the first Fresnel lens 3 respectively; the condensing lens group 2 is arranged between the first fresnel lens 3 and the light-emitting lamp bead panel 1.
The optical axis of the first fresnel lens 3, the optical axis of the second fresnel lens 4 and the central axis of the light-emitting lamp bead panel 1 coincide.
The smooth surface of the first fresnel lens 3 faces the incident light direction, and the threaded surface of the first fresnel lens 3 faces the emergent light direction.
The smooth surface of the second fresnel lens 4 faces the incident light direction, and the threaded surface of the second fresnel lens 4 faces the emergent light direction.
The first fresnel lens 3 and the second fresnel lens 4 can determine the size specification parameters of the fresnel lens according to the requirements of light mixing and imaging, including but not limited to pitch, diameter, angle and focal length.
In order to enable the light source of the down lamp to image uniformly, the condensing lens group 2, the first Fresnel lens 3 and the second Fresnel lens 4 are adopted to cooperate with each other to image. First fresnel lens 3 and second fresnel lens 4 can receive light and colour mixture well to the light path of 1 outgoing of luminous lamp pearl panel of large tracts of land, and first fresnel lens 3 and second fresnel lens 4 still possess the focus controllable, and thickness is thin, and mirror surface area is big a bit for the heat dissipation function of this embodiment is showing and simple structure.
Wherein, the distance between the first fresnel lens 3 and the second fresnel lens 4 varies according to the size of the required imaging angle.
In a preferred embodiment, referring to fig. 2, the light-emitting lamp bead panel 1 is a centrosymmetric structure, and is provided with a plurality of circular lamp holes which have the same size and are uniformly arranged.
In a preferred embodiment, the light-emitting lamp bead panel 1 is in a regular hexagonal structure, a circular structure, an oval structure or a square structure.
The light-emitting lamp bead panel 1 can change the shape and structure according to the specific light mixing and imaging requirements, so as to achieve different optical imaging shapes.
In a preferred embodiment, in order to ensure good heat dissipation performance, the distance between every two circular lamp holes is 10 mm.
Preferably, referring to fig. 2, the light-emitting lamp bead panel 1 is in a regular hexagon structure, and is provided with a plurality of uniformly arranged circular lamp holes with the same size, the longest diagonal of the regular hexagon structure is formed by arranging 10 circular lamp holes, the distance between every two circular lamp holes is 10mm, and the length of the longest diagonal of the regular hexagon structure formed by arranging the circular lamp holes is 104 mm.
In preferred embodiment, in order to image the circular lamp hole of wide interval, avoid the light path overlength to lead to the structure of down lamp complicated, condensing lens group 2 contains a plurality of condensing lens, and each in the circular lamp hole of luminous lamp pearl panel 1, all be provided with a condensing lens.
In a preferred embodiment, one colored lamp bead is arranged in each circular lamp hole in the light-emitting lamp bead panel 1.
On one hand, each condensing lens in the condensing lens group 2 can collect the light path emitted by each colored lamp bead to emit light, so that the phenomenon that the light path leaks from the side surface of the system to cause that the emitted light does not participate in imaging is avoided, and the imaging efficiency is low; on the other hand, can be with the light path parallel outgoing of colored lamp pearl to the first fresnel lens of lower part is to the colour mixture of light path and the formation of image of second fresnel lens to the light path.
In a preferred embodiment, the colored lamp beads are widely spaced colored lamp beads.
What the utility model needs to protect is an optical system structure composed of a light-emitting lamp bead panel 1, a condenser lens group 2, a first Fresnel lens 3 and a second Fresnel lens 4, and the operations of setting the shape structure of the light-emitting lamp bead panel, the distance between the first Fresnel lens 3 and the second Fresnel lens 4 and the size specification parameters according to the requirements of required imaging and light mixing all belong to the routine settings of technicians in the field.
The principle of the utility model is as follows:
luminous lamp pearl panel 1 sends the light path through colored lamp pearl in circular lamp hole, emergent light path is at first through condensing lens group 2, condensing lens group 2 is restrainted emergent light path and is used the parallel light emergence, the parallel light is used near the focus in first fresnel lens 3's imaging space through 3 output parallel colorama of first fresnel lens mutually, make the emergent facula carry out even mixed light near the focus, imaging surface after even mixed light is afterwards through the second fresnel lens 4 that accords with concrete demand, just, obtain the imaging surface that the size accords with the demand, thereby reach the effect that the imaging facula is even and soft circular facula.
The principle part of the utility model belongs to the prior art, the improvement point of the utility model lies in providing a down lamp optical system, implementing the embodiment of the utility model, having the following effects:
according to the embodiment of the utility model, the wide-spacing colored lamp bead emergent light source of the light-emitting lamp bead panel can be converged through the condensing lens group, so that the heat dissipation function of the system is remarkable, meanwhile, the light path is prevented from leaking from the side surface, then, the first Fresnel lens and the second Fresnel lens are used for uniformly mixing emergent light near the focus of the Fresnel lens, and for different angle requirements, the spacing between the two Fresnel lenses is adjusted, so that uniform imaging surfaces with different sizes are obtained, the light mixing degree of emergent light spots is further improved, and the light converging and mixing of a large-area light-emitting surface can be carried out.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the utility model, and such modifications and enhancements are also considered to be within the scope of the utility model.
Claims (7)
1. A downlight optical system, comprising: the LED lamp comprises a light-emitting lamp bead panel, a condensing lens group, a first Fresnel lens and a second Fresnel lens;
the surface of the panel of the light-emitting lamp bead is provided with the condensing lens group and the first Fresnel lens respectively; the condenser lens group is arranged between the first Fresnel lens and the light-emitting lamp bead panel;
the optical axis of the first Fresnel lens, the optical axis of the second Fresnel lens and the central axis of the light-emitting lamp bead panel are superposed;
the smooth surface of the first Fresnel lens faces the direction of incident light, and the threaded surface of the first Fresnel lens faces the direction of emergent light;
the smooth surface of the second Fresnel lens faces the incident light direction, and the threaded surface of the second Fresnel lens faces the emergent light direction.
2. A downlight optical system according to claim 1, wherein the light-emitting lamp bead panel is of a centrosymmetric structure, and is provided with a plurality of uniformly arranged circular lamp holes of the same size.
3. A downlight optical system according to claim 2, wherein the spacing between every two of the circular light holes is 10 mm.
4. A downlight optical system according to claim 2, wherein the condenser lens group comprises a plurality of condenser lenses, and one condenser lens is disposed in each of the circular lamp holes of the light-emitting lamp bead panels.
5. A downlight optical system according to any one of claims 2 to 4, wherein there is one coloured lamp bead provided in each circular lamp hole in the said light-emitting lamp bead panel.
6. A downlight optical system according to claim 5, wherein the colored light beads are widely spaced colored light beads.
7. A downlight optical system according to claim 2, wherein the light-emitting bead panel is of a regular hexagonal structure, a circular structure, an elliptical structure or a square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122977562.XU CN216591547U (en) | 2021-11-29 | 2021-11-29 | Down lamp optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122977562.XU CN216591547U (en) | 2021-11-29 | 2021-11-29 | Down lamp optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216591547U true CN216591547U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122977562.XU Active CN216591547U (en) | 2021-11-29 | 2021-11-29 | Down lamp optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216591547U (en) |
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2021
- 2021-11-29 CN CN202122977562.XU patent/CN216591547U/en active Active
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