CN217875393U

CN217875393U - Lens with total reflection structure

Info

Publication number: CN217875393U
Application number: CN202221768955.8U
Authority: CN
Inventors: 任敏; 任超
Original assignee: Dongguan Hengzheng Optical Technology Co ltd
Current assignee: Dongguan Hengzheng Optical Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-22
Anticipated expiration: 2032-07-08

Abstract

The utility model relates to a take lens of total reflection structure, including spotlight cup and reflector, reflector an organic whole sets up upwards in the periphery of spotlight cup, the spotlight cup sets up into light portion, spotlight face and play plain noodles, reflection plane an organic whole sets up a plurality of reflection prism, partly light that goes into light portion entering spotlight cup passes through spotlight face reflection to going out the plain noodles, another part light is in spotlight face department refraction to the reflection plane of reflector, and reflect to the play plain noodles in the spotlight cup through reflection prism's reflection plane, it sets up a plurality of light-emitting points that are used for the scattered light to go out the plain noodles, a plurality of light-emitting points meet and form the texture. The utility model discloses an enclose and establish at spotlight cup outlying reflector, reflect partly from the outside light of condensing surface refraction to going out the plain noodles once more, avoid light to pass the condensing surface and cause the light loss, make lens mixed light colour softer, photochromic temperature more even through a plurality of light-emitting points.

Description

Lens with total reflection structure

Technical Field

The utility model relates to a lens technology field, in particular to take lens of total reflection structure.

Background

Lenses are particularly important in LED light fixtures where the lens is mounted in front of the light source of the fixture. As shown in fig. 1, the lens includes a light-focusing cup body, the light-focusing cup body is conical, the light-focusing surface is conical, the shaft of the light-focusing cup body is recessed inwards to form a light hole, the light source can be arranged in the center of the hole of the light hole, the light of the light source is refracted from the light hole and enters the light-focusing cup body, the light in the middle is directly emitted to the light-emitting surface of the light-focusing cup body, and most of the light is emitted to the light-focusing surface of the light-focusing cup body, wherein a part of the light meeting the reflection condition is reflected to the light-emitting surface through the light-focusing surface, and the other part of the light penetrates through the light-focusing surface due to the fact that the total reflection condition is not met, so as to cause light leakage, thereby reducing the light-emitting efficiency of the lens, leading to light loss, affecting the lighting quality of the lamp, and generating unnecessary stray light.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a take lens of total reflection structure through enclosing to establish at spotlight cup outlying reflector, reflects partly outside light to going out the plain noodles once more from the condensation surface refraction, avoids light to pass the condensation surface and causes the light loss.

In order to achieve the above purpose, the utility model provides a technical scheme does: a lens with a total reflection structure comprises a light condensation cup body and a reflector, wherein the reflector is integrally arranged on the periphery of the light condensation cup body in an upward direction, the light condensation cup body is provided with a light inlet part, a light condensation surface and a light outlet surface, the reflector is integrally provided with a plurality of reflection prisms, one part of light entering the light condensation cup body from the light inlet part is reflected to the light outlet surface through the light condensation surface, the other part of light is refracted to the reflector at the light condensation surface and is reflected to the light outlet surface in the light condensation cup body through a reflection plane of the reflection prisms, the light outlet surface is provided with a plurality of light outlet points used for scattering the light, and the light outlet points are connected to form textures.

In the technical scheme, the edge of the light-emitting surface of the light-gathering cup body is connected with the reflector, and a gap is formed between the light-gathering surface of the light-gathering cup body and the inner side surface of the reflector.

In the technical scheme, the plurality of reflecting prisms are convexly arranged on the outer side wall of the reflector, the reflecting prisms are in a long strip shape, and the plurality of reflecting prisms are arranged in parallel.

In the above technical scheme, one end of the reflector, which is far away from the light-emitting surface, is provided with a circle of convex edge, and the outer side wall of the convex edge is provided with at least two positioning surfaces which are used as positioning fool-proofing structures.

In the above technical solution, the reflection prism is disposed from the light incident portion to the light exit surface.

In the above technical solution, an included angle between two reflecting planes of the reflecting prism is 90 °.

In the above technical scheme, the outer side wall of the reflector is provided with the reinforcing rib, and the reinforcing rib and the reflecting prism are arranged in parallel.

In the above technical solution, the plurality of light emitting points are connected to form a texture similar to a compound eye.

The beneficial effects of the utility model reside in that, the utility model discloses rational in infrastructure, novel in design, practicality are strong, through enclosing to establish at spotlight cup outlying reflector, reflect partly from the outside light of condensing surface refraction to going out the plain noodles once more, avoid light to pass the condensing surface and cause the light loss, make lens mixed light colour softer, photochromic temperature is more even through a plurality of light-emitting points.

Drawings

Fig. 1 is a schematic view of a light propagation structure of a conventional lens.

Fig. 2 is one of the schematic three-dimensional structures of the present invention.

Fig. 3 is a schematic plan view of the present invention.

FIG. 4 isbase:Sub>A schematic view of the cross-sectional structure A-A' of FIG. 3.

Fig. 5 is a second schematic perspective view of the present invention.

Fig. 6 is a schematic view of the light propagation structure of the present invention.

Fig. 7 is a schematic view of a light reflection structure of the reflection prism.

In the figure: 1. a light-gathering cup body; 11. a light entrance hole; 111. a second light incident surface; 112. a first light incident surface; 12. a light-condensing surface; 13. a light emitting surface; 14. a light emitting point; 15. a first light emitting area; 16. a second light emission region; 17. a first loop region; 18. a second loop region; 19. a third loop region; 2. a reflector; 221. a reflective plane; 21. An inner side surface; 22. a reflective prism; 23. a convex edge; 24. a positioning column; 25. reinforcing ribs; 26. a positioning surface; 10. and a light source.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described and illustrated with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Based on the embodiments provided by the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Moreover, it should be further appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by one of ordinary skill in the art that the described embodiments of the present invention may be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as is commonly understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing a particular embodiment do not denote a limitation of quantity, but rather denote the singular or plural. The present invention relates to the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description may not be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The utility model relates to a "a plurality of" means more than or equal to two. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The terms "first," "second," "third," and the like, as referred to herein, merely distinguish similar objects and do not denote a particular ordering of objects.

As shown in fig. 2, the overall cylindrical lens is shown, the light-gathering cup 1 is arranged at the center, the reflector 2 is arranged at the periphery, the reflecting prism 22 for total reflection is arranged on the outer side surface of the reflector 2, and the light rays refracted and leaked from the light-gathering cup 1 are reflected back again through the reflecting prism 22, so that light damage is avoided.

As shown in fig. 2-7, a lens with total reflection structure includes a light-gathering cup body 1 and a reflector 2, the reflector 2 is integrally disposed on the periphery of the light-gathering cup body 1, the light-gathering cup body 1 is provided with a light-entering portion, a light-gathering surface 12 and a light-emitting surface 13, the reflector is integrally provided with a plurality of reflection prisms 22, a part of light entering the light-entering portion into the light-gathering cup body 1 is reflected to the light-emitting surface 13 through the light-gathering surface 12, another part of light is refracted to the reflector 2 at the light-gathering surface 12 and is reflected to the light-emitting surface 13 inside the light-gathering cup body 1 through a reflection plane 221 of the reflection prisms 22, the light-emitting surface 13 is provided with a plurality of light-emitting points 14 for scattering the light, and the plurality of light-emitting points 14 are connected to form a texture.

As shown in fig. 2 and 5, the light-gathering cup 1 is connected to the reflector 2 at the edge of the light-exiting surface 13, and a gap is formed between the light-gathering surface 12 of the light-gathering cup 1 and the inner side surface 21 of the reflector 2. Specifically, the reflector 2 is cylindrical, the inner side surface 21 of the reflector 2 is a smooth cylindrical surface, the plurality of reflection prisms 22 are convexly arranged on the outer side wall of the reflector 2, the reflection prisms 22 are long-strip-shaped, and the plurality of reflection prisms 22 are arranged in parallel. The reflection prism 22 is provided from the light incident portion toward the light exit surface 13. The two reflecting planes 221 of the reflecting prism 22 have an included angle of 90 °, and light rays at any angle are totally reflected, so that light loss of the light rays is eliminated. In the present embodiment, the reflecting plane 221 is disposed substantially along the axial direction of the lens, and the reflecting plane 221 forms an acute angle with the axial direction of the lens, but the reflecting plane 221 may be completely parallel to the axial direction of the lens.

As shown in fig. 5, the reflector 2 is provided with a circle of circular convex edge 23 at one end of the light incident portion, two positioning surfaces 26 serving as positioning fool-proof structures are arranged on the outer side wall of the convex edge 23, and the positioning surfaces 26 enable the lens to be conveniently positioned in the production and assembly processes, so that the production quality and the production efficiency of the lens are ensured. Be provided with reference column 24 on the terminal surface of chimb 23, can be comparatively convenient with lens installation on the PCB board of lamps and lanterns through reference column 24.

Except that the reflector 2 is arranged to be cylindrical, the reflector 2 can also be arranged to be a frame with four sides, six sides and eight sides, the corresponding light-emitting surface 13 is arranged to be a quadrangle, a hexagon and an octagon, and the convex edge 23 is arranged to be a frame with four sides, six sides and eight sides, wherein the shapes of the reflector 2, the light-emitting surface 13 and the convex edge 23 can be correspondingly changed according to the structure of the lamp provided with the lens, so as to meet the requirements of different lamps.

Be provided with the strengthening rib 25 on the lateral wall of reflector 2, strengthening rib 25 and reflection prism 22 parallel arrangement each other, two strengthening ribs 25 symmetry sets up on reflector 2 lateral wall to strengthen lens's intensity, can set up the gluey mouth of advancing of lens injection moulding in-process simultaneously on strengthening rib 25, make the broken face that advances to glue mouthful and remove to form after the mouth of a river can not influence the transmission effect of lens to light.

As shown in fig. 3, a plurality of light emitting points 14 are connected to form a texture similar to a compound eye. The light emitting surface 13 can be designed with compound eye texture structures with different shapes, specifications and arrangement according to needs, and various light beam angles are changed, so that the formed compound eye texture has the effect of enabling the mixed light color of the lens to be softer and the light color temperature to be more uniform.

In the present embodiment, the circular first light emission region 15 and the annular second light emission region 16 are provided on the light emission surface 13, but the first light emission region 15 is not limited to the circular shape, the first light emission region 15 is provided at the center of the light emission surface 13, and the surface area of each light emission point 14 in the first light emission region 15 is larger than the surface area of each light emission point 14 in the second light emission region 16. The first light emitting area 15 is slightly lower than the second light emitting area 16, five circles of light emitting points 14 are concentrically arranged in the first light emitting area 15 with one light emitting point 14 at the center as the center, and the texture formed by the connection of the light emitting points 14 of the first light emitting area 15 is a honeycomb texture. The second light emitting area 16 is divided into a first ring area 17, a second ring area 18 and a third ring area 19 in sequence from inside to outside along the radial direction, the texture formed by the connection of the plurality of light emitting points 14 of the first ring area 17 and the third ring area 19 is a diamond texture, and the texture formed by the connection of the plurality of light emitting points 14 of the second ring area 18 is a honeycomb texture.

As shown in fig. 4-5, the light condensing cup 1 is conical, the light condensing surface 12 is conical, the light incident portion is a light incident hole 11 formed by the light condensing cup 1 with an inward recessed shaft portion, the light incident hole 11 is a blind hole, the light incident hole 11 has two light incident surfaces, the two light incident surfaces are a first light incident surface 112 disposed at the bottom of the hole and a second light incident surface 111 disposed at the outer circumferential direction of the first light incident surface 112, the first light incident surface 112 is protruded outward along the axial direction, the first light incident surface 112 is a spherical arc surface, and the second light incident surface 111 is conical, so that more light rays can be refracted to the light condensing surface 12 by the second light incident surface 111.

As shown in fig. 6-7, the lamp source 10 is disposed in the center of the opening of the light inlet 11, the light of the lamp source 10 is refracted from the light inlet 11 and enters the light-gathering cup 1, the light in the middle directly irradiates to the light-emitting surface 13, and most of the light irradiates to the light-gathering surface 12, wherein a part of the light satisfying the reflection condition is reflected by the light-gathering surface 12 to form a collimated light to irradiate to the light-emitting surface 13, another part of the light refracts to penetrate through the light-gathering surface 12 because the light does not satisfy the total reflection condition, then refracts to the reflector 2 from the inner surface 21 of the reflector 2, and then reflects to the light-gathering body again through the reflection plane 221 of the reflection prism 22 of the reflector 2, and then irradiates to the light-emitting surface 13, thereby minimizing the loss of light energy and improving the light-emitting efficiency of the lens.

The utility model discloses rational in infrastructure, novel in design, practicality are strong, through enclosing to establish at 1 outlying reflector 2 of spotlight cup, reflect partly from the outside light of condensing surface 12 refraction once more to going out plain noodles 13, avoid light to pass condensing surface 12 and cause the light loss, make lens mixed light colour softer, photochromic temperature more even through a plurality of light-emitting points 14.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications to the above embodiments are all within the scope of the present invention.

Claims

1. The lens with the total reflection structure is characterized by comprising a light condensation cup body (1) and a reflector (2), wherein the reflector (2) is integrally arranged on the periphery of the light condensation cup body (1) in the upward direction, the light condensation cup body (1) is provided with a light inlet part, a light condensation surface (12) and a light outlet surface (13), the reflector is integrally provided with a plurality of reflection prisms (22), one part of light entering the light condensation cup body (1) from the light inlet part is reflected to the light outlet surface (13) through the light condensation surface (12), the other part of light is refracted to the reflector (2) at the light condensation surface (12) and is reflected to the light outlet surface (13) in the light condensation cup body (1) through a reflection plane (221) of the reflection prisms (22), the light outlet surface (13) is provided with a plurality of light outlet points (14) for scattering the light, and the light outlet points (14) are connected to form textures.

2. A lens with total reflection structure according to claim 1, characterized in that the light-gathering cup (1) is connected with the reflector (2) at the edge of the light-exiting surface (13), and a gap is formed between the light-gathering surface (12) of the light-gathering cup (1) and the inner side surface (21) of the reflector (2).

3. A lens with total reflection structures according to claim 2, characterized in that a plurality of reflection prisms (22) are convexly provided on the outer side wall of the reflector (2), the reflection prisms (22) are in a long strip shape, and the plurality of reflection prisms (22) are arranged in parallel with each other.

4. A lens with total reflection structure according to claim 3, characterized in that the reflector (2) is provided with a circle of convex edge (23) at the end far away from the light exit surface (13), and the outer side wall of the convex edge (23) is provided with at least two positioning surfaces (26) as positioning fool-proofing structures.

5. A lens with total reflection structure according to claim 3, wherein the reflection prism (22) is disposed from the light incident portion to the light emitting surface (13).

6. The lens with total reflection structure according to claim 5, wherein the two reflection planes (221) of the reflection prism (22) are at an angle of 90 °.

7. The lens with total reflection structure according to claim 5, wherein the reflector (2) has a rib (25) on its outer sidewall, and the rib (25) and the reflection prism (22) are parallel to each other.

8. A lens with total reflection structure according to claim 1, characterized in that said plurality of light emitting spots (14) are connected to form a texture similar to a fly eye.