CN214536019U - Variable-angle lens and lamp - Google Patents
Variable-angle lens and lamp Download PDFInfo
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- CN214536019U CN214536019U CN202121150268.5U CN202121150268U CN214536019U CN 214536019 U CN214536019 U CN 214536019U CN 202121150268 U CN202121150268 U CN 202121150268U CN 214536019 U CN214536019 U CN 214536019U
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Abstract
The utility model discloses a variable angle lens and lamp, variable angle lens includes the lens body, and the lens body has relative first end and second end, and the terminal surface size of first end is greater than the terminal surface size of second end, and first end has the first optical surface of indent, and the second end has the second optical surface of indent, and the wall of lens body between first end and second end is the third optical surface, the third optical surface is the cambered surface of evagination, and when using first optical surface as the income plain noodles, then the third optical surface is the play plain noodles, and at least part light that incides into the lens body through first optical surface spreads the outgoing at the third optical surface, and when using the second optical surface as the income plain noodles, then the third optical surface is the plane of reflection, and the terminal surface of first end is the play plain noodles, and the terminal surface that incides into this internal at least part light of lens through the second optical surface takes place to reflect at the third optical surface, and converge the outgoing at the terminal surface of first end, therefore, large-angle diffusion light distribution and small-angle convergence light distribution of the lamp are realized.
Description
Technical Field
The utility model relates to the field of lighting technology, especially, relate to a variable angle lens and lamps and lanterns.
Background
In the existing lamp, a lens is generally used as a light source for light distribution, so that the irradiation range of the light source is changed. However, the light distribution mode of the existing lens is single, one lens often only has the light distribution diffusion function or the light distribution convergence function, a hyperboloid lens is usually adopted for large-angle light distribution diffusion, and a TIR lens is usually adopted for small-angle light distribution convergence. The prior art lacks a lens capable of switching between a diffusion light distribution mode and a convergence light distribution mode, so that the lens is suitable for scenes with large-angle floodlight illumination and small-angle key illumination.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a variable angle lens to solve the technical problem that prior art's grading lens grading mode is single, the practicality is relatively poor.
In order to solve the above problem, the utility model adopts the following technical scheme:
the utility model discloses a variable angle lens, including the lens body, the lens body has relative first end and second end, the terminal surface size of first end is greater than the terminal surface size of second end, first end has the first optical surface of indent, the second end has the second optical surface of indent, the lens body is in first end with wall between the second end is the third optical surface, the third optical surface is the cambered surface of evagination.
When the first optical surface is taken as a light incident surface, the third optical surface is a light emergent surface, and at least part of the light rays incident into the lens body through the first optical surface are diffused and emitted at the third optical surface.
When the second optical surface is used as a light incident surface, the third optical surface is used as a reflecting surface, the end surface of the first end is a light emergent surface, and at least part of light rays incident into the lens body through the second optical surface are reflected on the third optical surface and converged and emergent on the end surface of the first end.
Further, the first optical surface is an arc surface recessed toward the third optical surface.
Further, the second optical surface is an arc surface recessed toward the third optical surface.
Furthermore, the first optical surface is recessed inwards at the first end to form a first cavity, the second optical surface is recessed inwards at the second end to form a second cavity, the second cavity is formed by surrounding a second optical surface and a light splitting bottom surface, and the second optical surface surrounds the light splitting bottom surface.
When the first optical surface is taken as a light incident surface, the light splitting bottom surface and the third optical surface are light emergent surfaces, light rays incident through the middle part of the first cavity are emergent at the light splitting bottom surface, and light rays incident through the peripheral side part of the first cavity are emergent at the third optical surface.
When the second optical surface is taken as a light incident surface, the end surface of the first end and the third optical surface are both light emergent surfaces, light rays incident through the middle part of the second cavity are reflected on the first optical surface and emergent on the third optical surface, and light rays incident through the peripheral side part of the second cavity are reflected on the third optical surface and emergent on the end surface of the first end.
Further, the light splitting bottom surface is a plane perpendicular to the central axis of the lens body or an arc surface recessed towards the first cavity.
Further, the lens body is in a revolution configuration
Further, the lens body is bowl-shaped in configuration.
Furthermore, the opening size of the first cavity at the first end is smaller than the end face size of the first end, and the opening size of the first cavity is smaller than or equal to the opening size of the second cavity.
Further, the opening size of the second cavity is equal to the end face size of the second end.
The utility model also provides a lamp, including light source and foretell variable angle lens, the light source is located first appearance chamber or meeting holds the intracavity, the light source is the LED light source.
The utility model discloses a technical scheme can reach following beneficial effect:
the embodiment of the utility model discloses variable angle lens can switch the grading mode of lens body through upset lens body: when the first optical surface is taken as a light incident surface, the third optical surface is a light emergent surface, and at least part of light rays incident into the lens body through the first optical surface are refracted on the third optical surface and diffused and emitted, so that the light distribution angle of a light source is increased; when the second optical surface is taken as a light incident surface, the third optical surface is taken as a reflecting surface, the end surface of the first end is taken as a light emergent surface, and at least part of light rays incident into the lens body through the second optical surface are reflected on the third optical surface and converged and emitted at the end surface of the first end, so that the light distribution angle of a light source is reduced; therefore, the embodiment of the utility model provides a variable angle lens are applicable to some scenes that need lamps and lanterns grading angle to change, and the practicality is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a variable angle lens according to an embodiment;
FIG. 2 is a cross-sectional view of a variable angle lens of an embodiment;
FIG. 3 is a schematic view of the divergent light distribution of the variable angle lens according to the embodiment;
fig. 4 is a schematic view of the convergent light distribution of the variable angle lens of the embodiment.
In the figure:
100-lens body, 110-first optical surface, 120-second optical surface, 130-third optical surface, 140-first cavity, 150-second cavity, 160-light splitting bottom surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The variable angle lens provided by the embodiment of the present application is described in detail below with reference to fig. 1 to 4 through specific embodiments and application scenarios thereof.
The embodiment of the utility model provides a become angle lens, become angle lens include lens body 100, and lens body 100 has relative first end and second end, and the terminal surface size of first end is greater than the terminal surface size of second end.
The first end of the lens body 100 has a first concave optical surface 110, the second end has a second concave optical surface 120, a wall surface of the lens body 100 between the first end and the second end is a third optical surface 130, and the third optical surface 130 is a convex arc surface.
When the light source is located at the first end, the first optical surface 110 is used as a light incident surface, and the third optical surface 130 is a light emitting surface, so that at least a part of the light rays incident into the lens body 100 through the first optical surface 110 are diffused and emitted from the third optical surface 130.
Specifically, referring to fig. 3, the first optical surface 110 is a cambered surface recessed toward the third optical surface 130, when light enters through the first optical surface 110, the first optical surface 110 and the third optical surface are both concave surfaces facing the light source, the light is refracted for the first time at the first optical surface 110 and enters the lens body 100, and the light entering the lens body 100 is refracted for the second time at the third optical surface 130 and exits.
With the incident light that is incident on the first optical surface 110 and has a refraction ray perpendicular to the third optical surface 130 as a first reference light, according to the principle of light refraction, the emergent light of the incident light between the first reference light and the first end is deflected toward the first end, and the emergent light of the incident light between the first reference light and the second end is deflected toward the second end.
The light path of the second reference light is described with the incident light perpendicular to the first optical surface 110 as the second reference light, the second reference light being located between the first reference light and the first end surface:
the second reference light ray perpendicularly enters the first optical surface 110, when the second reference light ray exits from the third optical surface 130, the normal of the exit point is located below the second reference light ray, and according to the refraction principle of light, the exit light ray of the second reference light ray is deflected towards the first end of the lens body 100, so that the included angle formed between the exit light ray and the axis of the lens body is larger than the included angle formed between the second reference light ray and the axis of the lens body, and the angle of the second reference light ray relative to the lens body 100 is increased.
Similarly, the included angle between the emergent ray and the axis of the lens body 100 of the incident ray in the first reference ray and the first end section is larger than the included angle between the incident ray and the axis of the lens body 100, so that the light distribution angle of the light source is increased, namely, the ray is diffused and emitted.
Referring to fig. 4, the second optical surface 120 is a concave surface opposite to the light source, when the light source is located at the second end, the second optical surface 120 is a light incident surface, the third optical surface 130 is a reflective surface, the end surface of the first end is a light emitting surface, and at least a portion of the light rays incident into the lens body 100 through the second optical surface 120 are reflected by the third optical surface 130 and converged and emitted at the end surface of the first end.
The first optical surface 110 is recessed inwards at a first end to form a first cavity 140, the first optical surface 110 forms a cavity wall of the first cavity 140, the second optical surface 120 is recessed inwards at a second end to form a second cavity 150, the second optical surface 120 forms a circumferential wall of the second cavity 150, the second cavity 150 is formed by the second optical surface 120 and a light splitting bottom surface 160 in a surrounding mode, the light splitting bottom surface 160 is a plane perpendicular to the central axis of the lens body 100 or an arc surface recessed towards the first cavity 140, and the second optical surface 120 surrounds the light splitting bottom surface 160.
When the first optical surface 110 is taken as the light incident surface, the light splitting bottom surface 160 and the third optical surface 130 are both light emergent surfaces: specifically, referring to fig. 3, the light entering through the middle portion of the first cavity 140 exits at the light splitting bottom surface 160, and a part of the light exiting through the light splitting bottom surface 160 is refracted at the second optical surface 120, enters the lens body 100 again, and exits through the third optical surface 130; the light incident through the peripheral portion of the first cavity 140 is directly emitted from the third optical surface 130.
When the second optical surface 120 is taken as the light incident surface, the end surface of the first end and the third optical surface 130 are both light emergent surfaces: specifically, referring to fig. 4, light incident through the middle portion of the second cavity 150 is refracted at the light splitting bottom surface 160 and enters the lens body 100, and then is reflected at the first optical surface 110 and exits at the third optical surface 130, a part of the light reflected by the first optical surface 110 directly exits through the third optical surface 130, while another part of the light reflected by the first optical surface 110 is totally reflected by the end surface of the first end and exits through the third optical surface 130, and the light exiting through the third optical surface 130 forms a secondary light spot on the peripheral side of the lens body 100, and can be absorbed by the mounting component on which the lens body 100 is mounted; the light incident through the peripheral portion of the second cavity 150 is reflected by the third optical surface 130 and directly exits at the end surface of the first end.
In an alternative embodiment, the lens body 100 has a rotational configuration, and the central axes of the first cavity 140, the second cavity 150 and the lens body 100 coincide.
In a preferred embodiment, the lens body 100 has a bowl-shaped configuration, and the end surface of the first end and the end surface of the second end are both circular surfaces, so that the lens has the advantages of good light-emitting uniformity, high light-emitting efficiency, simple and beautiful appearance, and the like.
The size of the opening of the first cavity 140 at the first end is smaller than the size of the end face of the first end, so that the end face of the first end is annular, and when light distribution is carried out at a small angle, the convergent light is emitted from the annular end face.
The opening size of the second cavity 150 at the second end is equal to the end face size of the second end, and when the light source is at the second end of the lens body 100, the light rays incident through the peripheral side portion of the second cavity 150 can be fully emitted on the third optical surface 130 as much as possible, so that the brightness of the lens body during small-angle light distribution is improved.
In a preferred embodiment, the opening size of the first cavity 140 is smaller than or equal to the opening size of the second cavity 150, so that when the small-angle light distribution is performed, the light totally reflected on the third optical surface 130 can exit through the end surface of the first end, and the interference generated by the first optical surface 110 is avoided.
The embodiment of the utility model provides a lamps and lanterns are still provided, including light source and foretell variable angle lens, the light source is located the first end or the second end of lens body 100.
As a further improvement of the embodiment, the light source is an LED light source, and the LED light source has the advantages of environmental protection, energy conservation, long service life and the like.
To sum up, the embodiment of the utility model provides a become angle lens and lamps and lanterns have following technological effect:
the light distribution pattern of the lens body can be switched by turning the lens body 100: when the first optical surface 110 is used as the light incident surface, the third optical surface 130 is used as the light emergent surface, and at least a part of the light rays incident into the lens body 100 through the first optical surface 110 are refracted at the third optical surface 130 and diffused and emitted, so that the light distribution angle of the light source is increased; when the second optical surface 120 is used as a light incident surface, the third optical surface 130 is used as a reflecting surface, the end surface of the first end is a light emitting surface, and at least part of the light rays incident into the lens body through the second optical surface 120 are reflected on the third optical surface 130 and converged and emitted at the end surface of the first end, so that the light distribution angle of the light source is reduced; therefore, the embodiment of the utility model provides a variable angle lens are applicable to some scenes that need lamps and lanterns grading angle to change, and the practicality is strong.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. A variable angle lens, comprising a lens body (100), wherein the lens body (100) has a first end and a second end opposite to each other, the end surface size of the first end is larger than that of the second end, the first end has a first concave optical surface (110), the second end has a second concave optical surface (120), the wall surface of the lens body (100) between the first end and the second end is a third optical surface (130), and the third optical surface (130) is a convex cambered surface;
when the first optical surface (110) is used as a light incident surface, the third optical surface (130) is a light emergent surface, and at least part of light rays incident into the lens body (100) through the first optical surface (110) are diffused and emitted from the third optical surface (130);
when the second optical surface (120) is used as a light incident surface, the third optical surface (130) is used as a reflecting surface, the end surface of the first end is a light emergent surface, and at least part of light rays incident into the lens body (100) through the second optical surface (120) are reflected on the third optical surface (130) and converged and emitted from the end surface of the first end.
2. The variable angle lens of claim 1, wherein the first optical surface (110) is a curved surface that is concave toward the third optical surface (130).
3. The variable angle lens of claim 2, wherein the second optical surface (120) is a curved surface that is concave toward the third optical surface (130).
4. The variable angle lens of claim 3, wherein the first optical surface (110) is recessed inwardly at the first end to form a first cavity (140), the second optical surface (120) is recessed inwardly at the second end to form a second cavity (150), the second cavity (150) is defined by the second optical surface (120) and a beam splitting bottom surface (160), and the second optical surface (120) surrounds the beam splitting bottom surface (160);
when the first optical surface (110) is taken as a light incident surface, the light splitting bottom surface (160) and the third optical surface (130) are both light emergent surfaces, light rays incident through the middle part of the first cavity (140) are emergent at the light splitting bottom surface (160), and light rays incident through the peripheral side part of the first cavity (140) are emergent at the third optical surface (130);
when the second optical surface (120) is used as a light incident surface, the end surface of the first end and the third optical surface (130) are both light emergent surfaces, light rays incident through the middle part of the second cavity (150) are reflected on the first optical surface (110) and emergent on the third optical surface (130), and light rays incident through the peripheral side part of the second cavity (150) are reflected on the third optical surface (130) and emergent on the end surface of the first end.
5. The variable angle lens according to claim 4, wherein the light splitting bottom surface (160) is a plane perpendicular to a central axis of the lens body (100) or an arc surface recessed toward the first cavity (140).
6. The variable angle lens of claim 4, wherein the lens body (100) is of a revolved configuration.
7. The variable angle lens of claim 4, wherein the lens body (100) is bowl-shaped in configuration.
8. The variable angle lens as claimed in any one of claims 4 to 6, wherein the opening dimension of the first cavity (140) at the first end is smaller than the end face dimension of the first end, and the opening dimension of the first cavity (140) is smaller than or equal to the opening dimension of the second cavity (150).
9. The variable angle lens of any one of claims 4 to 6, wherein the opening size of the second cavity (150) is equal to the end surface size of the second end.
10. A luminaire comprising a light source and the variable angle lens of any one of claims 1 to 9, wherein the light source is located at the first end or the second end of the lens body (100), and the light source is an LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150268.5U CN214536019U (en) | 2021-05-26 | 2021-05-26 | Variable-angle lens and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150268.5U CN214536019U (en) | 2021-05-26 | 2021-05-26 | Variable-angle lens and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214536019U true CN214536019U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121150268.5U Active CN214536019U (en) | 2021-05-26 | 2021-05-26 | Variable-angle lens and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214536019U (en) |
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2021
- 2021-05-26 CN CN202121150268.5U patent/CN214536019U/en active Active
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