Light mixing optical lens with uniform light spots

Abstract

The utility model particularly relates to a light mixing optical lens with uniform light spots, which is assembled in a lamp holder and is provided with a light inlet hole, a reflecting part and a refracting part, the side face of the light inlet hole is a tooth-shaped light inlet face, and the refraction part comprises a refraction bottom face and a refraction top face. The reflecting part is a total-reflection curved surface, and light is refracted by the light-emitting surface after being reflected and then is emitted; the light-emitting surface comprises an outer ring light-emitting surface and an inner ring light-emitting surface; according to the utility model, the internal light path structure of the lens is optimized, clear boundary of reflection and refraction is carried out on light, and light path optimization is carried out, so that a refraction part and a reflection part can be lighted more uniformly, and uniform color mixing of light spots is ensured through various microstructures; refracted and reflected light rays are superposed, and a soft and uniform light pattern is collected.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting lamps, in particular to a light-mixing optical lens with uniform light spots. Background Art

[0002] At present, the indoor lighting downlights are all equipped with intelligent dimming and color adjustment control. One of the indicators is the need for color adjustment, which refers to adjusting the color temperature of the light source through a controller (color temperature is a unit of measurement that indicates the color component contained in light, and the unit of measurement is "K" (Kelvin)).

[0003] When the light source used has a color temperature that can be adjusted from more than 2000K (warm color / yellow light) to more than 6000K (cold color / white light), this standard light source will usually cause uneven light mixing when used with an optical lens. Even if light mixing is performed by adding a light homogenizer, the efficiency will still be low. In order to achieve normal efficiency, it is very important to make the light mixing of the optical lens uniform. Utility Model Content

[0004] The utility model aims to provide a light-mixing optical lens with uniform light spot to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A light-mixing optical lens with uniform light spot, the lens is provided with a light entrance hole, a reflecting part and a refracting part;

[0007] The side surface of the light entrance hole is a toothed light entrance surface, the refractive part includes a refractive bottom surface and a refractive top surface; the reflective part is a total reflection surface, and the light is reflected and refracted by the light emitting surface before emitting light; the light emitting surface includes an outer ring light emitting surface and an inner ring light emitting surface;

[0008] further, a refracting bottom surface and a refracting top surface;

[0009] Furthermore, the refractive top surface is provided with a plurality of Fresnel structures, and the Fresnel structures are sandblasted;

[0010] Furthermore, the outer ring light emitting surface has a wave microstructure, and the inner ring light emitting surface has a hexagonal bead surface microstructure;

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model optimizes the internal optical path structure of the lens, clearly separates the reflection and refraction of light, and optimizes the optical path, so that the refracted part and the reflected part can be illuminated more evenly, and through a variety of microstructures, the color mixing of the light spot is guaranteed to be uniform; the refracted and reflected light are superimposed to gather a soft and uniform light pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0014] Figure 2 It is an oblique upward view schematic diagram of the overall structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the optical path of the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] refer to Figure 1-3 As shown, a light-mixing optical lens with uniform light spot is assembled in a lamp holder, and the lens is provided with a light entrance hole, a reflecting part 2 and a refracting part;

[0018] The side surface of the light entrance hole is a toothed light entrance surface 1, and the refractive part includes a refractive bottom surface 4 and a refractive top surface 5; the reflective part 2 is a total reflection curved surface, and the light is refracted by the light emitting surface 3 after being reflected and then emitted; the light emitting surface 3 includes an outer ring light emitting surface 31 and an inner ring light emitting surface 32;

[0019] Further, a refractive bottom surface 4 and a refractive top surface 5;

[0020] Furthermore, the refractive top surface 5 is provided with a plurality of Fresnel structures, and the Fresnel structures are sandblasted;

[0021] Furthermore, the outer ring light emitting surface 31 has a wave microstructure, and the inner ring light emitting surface 32 has a hexagonal bead surface microstructure;

[0022] The light path of this embodiment is as follows. The light is divided into a reflection part and a refraction part. When the LED light source is turned on, the light is directly divided into a reflection part and a refraction part through the light entrance hole. The light of the reflection part enters the interior of the lens from the toothed refraction surface 1 and reaches the fully reflective reflective part 2. After being reflected on this surface, the light is emitted through the outer ring light exit surface 31 and the inner ring light exit surface 32 at the top. The light of the refraction part is refracted upward through the refraction bottom surface 4 at the top of the light entrance hole and emitted through the refraction top surface 5. Finally, the two parts of light are superimposed into a complete light pattern after being emitted.

[0023] The toothed light incident surface 1 adopts a toothed structure, which can ensure that the light is superimposed and interlaced in the first light incident stage, and by adding a reflective portion 2 with micro rhombuses, the entire reflective curved surface is divided into multiple small curved surface areas, and secondary light superposition and interlacing are performed, and finally the final reflected part of the light is superimposed through the hexagonal bead surface and wavy stripe microstructure on the outer ring light emitting surface 31 and the inner ring light emitting surface 32; the refractive portion ensures the interlacing of the light of the refracted light emitting portion through the refractive top surface 5 with multiple Fresnel structures;

[0024] The light undergoes multiple interlaced processes to ensure that the light spot of the lens has uniform and soft color mixing.

[0025] The utility model optimizes the internal optical path structure of the lens, clearly separates the reflection and refraction of light, and optimizes the optical path, so that the refracted part and the reflected part can be illuminated more evenly, and through a variety of microstructures, the color mixing of the light spot is guaranteed to be uniform; the refracted and reflected light are superimposed to gather a soft and uniform light pattern.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A light-mixing optical lens with uniform light spot, mounted in a lamp holder, characterized in that: The lens is provided with a light entrance hole, a reflecting portion (2) and a refractive portion; The side surface of the light entrance hole is a toothed light entrance surface (1); the refractive portion comprises a refractive bottom surface (4) and a refractive top surface (5); the reflective portion (2) is a total reflection curved surface; after light is reflected, it is refracted by the light emitting surface (3) and then emitted; the light emitting surface (3) comprises an outer ring light emitting surface (31) and an inner ring light emitting surface (32).

2. The light-mixing optical lens with uniform light spot according to claim 1, characterized in that: A refractive bottom surface (4) and a refractive top surface (5).

3. The light-mixing optical lens with uniform light spot according to claim 1, characterized in that: The refractive top surface (5) is provided with a plurality of Fresnel structures, and the Fresnel structures are sandblasted.

4. The light-mixing optical lens with uniform light spot according to claim 1, characterized in that: The outer ring light emitting surface (31) has a wave microstructure, and the inner ring light emitting surface (32) has a hexagonal bead surface microstructure.

Images