Optical light mixing lens and illuminating lamp

Abstract

The utility model discloses an optical light mixing lens and an illuminating lamp. The optical light mixing lens comprises a second light emitting area composed of an upper light emitting area and a lower light emitting area. The outer surface of the second light emitting area rotates in a phyllotaxis manner; the upper light-emitting area is located on the side away from a preset light-emitting body, and the lower light-emitting area is located on the side close to the preset light-emitting body; the shadow area of the transverse section of the upper light-emitting area is larger than that of the transverse section of the lower light-emitting area, and smooth transition is formed from the outer surface of the upper light-emitting area to the outer surface of the lower light-emitting area. According to the technical scheme provided by the utility model, the small-angle and long-range light emission of a product can be ensured, and meanwhile, the problem of small-angle light mixing is optimized to a greater extent, so that the small-angle lens can also achieve the effect of uniform light emission.

Description

Technical Field

[0001] The utility model relates to the field of lighting lamps and headlights, in particular to an optical light mixing lens and a lighting lamp. Background Art

[0002] With the recent rise in popularity of outdoor sports, demand for headlamps among night runners has steadily increased. The size and weight of headlamps significantly impact the night running experience. For example, excessively thick headlamps can shift the center of gravity forward, impacting the running experience. Furthermore, the lens, as the core light-emitting component of a headlamp, significantly influences its thickness. Consequently, demand for ultra-thin lenses has arisen, and achieving optimal light mixing is a major challenge.

[0003] The mainstream light-mixing lens currently on the market uses a scale-armored design on the total reflective surface, which uniformly mixes light across different lenses. This solution significantly enhances the light mixing effect, allowing light spots with inherent design flaws to achieve relatively optimized results after passing through the scales. However, its biggest drawback is its dependence on the thickness of the scales. Thinner scales will produce less pronounced light mixing, while thicker scales will significantly increase the light distribution angle (reducing range) and significantly reduce optical efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an optical light mixing lens and a lighting lamp.

[0005] An optical light-mixing lens comprises a second light-emitting area consisting of an upper light-emitting area and a lower light-emitting area; an outer surface of the second light-emitting area is rotated in a phyllosyntactic manner;

[0006] The upper light emitting area is located on a side away from the preset light emitting body, and the lower light emitting area is located on a side close to the preset light emitting body; the shadow area of ​​the transverse cross-section of the upper light emitting area is larger than the shadow area of ​​the transverse cross-section of the lower light emitting area, and there is a smooth transition from the outer surface of the upper light emitting area to the outer surface of the lower light emitting area.

[0007] Preferably, it also includes a first light-emitting area, which is a scale-armor mixed light-emitting area; the second light-emitting area forms a leaf-sequence rotation surrounding the first light-emitting area with the first light-emitting area as the center.

[0008] Preferably, the rotational variation of the curved surface of the upper light emitting area is smaller than the rotational variation of the curved surface of the lower light emitting area.

[0009] Preferably, the optical mixing lens is made of PC.

[0010] Preferably, the phyllotaxy rotation is a unidirectional phyllotaxy rotation.

[0011] Preferably, the first light emitting area and the second light emitting area are both cone-shaped; a first recessed area is provided at the center of the first light emitting area, a second recessed area is provided at the center of the second light emitting area, and the first light emitting area is located within the second recessed area.

[0012] A lighting lamp comprises a PCB board integrated with a light-emitting body, and the optical light-mixing lens as described above; the light-emitting body is aligned with the first light-emitting area.

[0013] Preferably, the optical light-mixing lenses include two or more lenses connected together; the number of the light-emitting bodies corresponds one to one to the number of the optical light-mixing lenses.

[0014] Preferably, the light-emitting body is an LED lamp bead.

[0015] The optical mixing lens and lighting lamp provided by the present invention not only reduce the height (thickness) of the lens, but also can perform different shaping for the curves at different positions of the total reflection surface; its first light-emitting area is a conventional scale-mixed light-emitting area, and most of the light emitted by the LED to this part of the area is directly transmitted light, which has little effect on the overall light spot; the second light-emitting area adopts a phylloses rotation shape, and the curve of the total reflection surface is divided into an upper and a lower part (corresponding to the upper light-emitting area and the lower light-emitting area respectively), and the light in the "upper" part of the total reflection curve is collimated emission provided by the lens, ensuring that the change amount of the curve in this part is not large, thereby achieving the small-angle collimated emission effect required by the lens; the "lower" part of the curve determines the secondary light spot part of the light spot, which is also the part that is more prone to color separation, and the stretching and rotation offset of this part of the curve is large, thereby achieving the effect of uniform light mixing.

[0016] Compared with the existing technology, this technical solution can not only ensure the product's small-angle and long-range light output, but also greatly optimize the small-angle light mixing problem, so that the small-angle lens can also achieve the effect of uniform light output. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an optical mixing lens in an embodiment of the present utility model;

[0018] Figure 2 This is a front view of the optical mixing lens in an embodiment of the present utility model;

[0019] Figure 3 A side view of the optical mixing lens in an embodiment of the present utility model;

[0020] Figure 4 Another side view of the optical mixing lens in the embodiment of the present utility model;

[0021] Figure 52. It is a cross-sectional view of the optical mixing lens in the embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of a lighting lamp in an embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of light emission from the upper light emission area in an embodiment of the present utility model;

[0024] Figure 8 This is a schematic diagram of the light output from the lower light output area in an embodiment of the present utility model;

[0025] The symbols in the drawings of the specification are as follows:

[0026] 1. Optical mixing lens; 2. First light-emitting area; 21. First recessed area; 3. Second light-emitting area; 31. Upper light-emitting area; 32. Lower light-emitting area; 33. Second recessed area; 4. PCB board; 5. Light-emitting body. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] An optical light mixing lens and a lighting lamp, such as Figures 1 to 8 As shown, the optical light mixing lens 1 includes a first light exit area 2 and a second light exit area 3 .

[0029] The first light-emitting area is the scale armor mixed light-emitting area, that is, the conventional scale armor shape mixed light-emitting scheme. Most of the light emitted by the LED to this part of the area is directly transmitted light, which has little effect on the overall light spot.

[0030] The second light-emitting area forms a phyllorotational arrangement around the first light-emitting area, with the first light-emitting area as the center, and includes an upper light-emitting area 31 and a lower light-emitting area 32. Phyllorotation refers to an arrangement of leaves on a stem that is alternate, opposite, or whorled. Preferably, the phyllorotation is unidirectional.

[0031] The upper light-emitting area is located on the side away from the predetermined light source, while the lower light-emitting area is located on the side closer to the predetermined light source. The shadow area of ​​the transverse cross-section of the upper light-emitting area is larger than the shadow area of ​​the transverse cross-section of the lower light-emitting area, and there is a smooth transition from the outer surface of the upper light-emitting area to the outer surface of the lower light-emitting area. In other words, the function of the second light-emitting area is to divide the total reflection surface of the lens into two groups, "upper" and "lower", for sequential dimming. The so-called "upper" and "lower" refer to the different unidirectional rotational linear curvatures of the second light-emitting area when viewed from the side of the optical mixing lens.

[0032] Specifically, see Figure 7 and 8 , the upper light-emitting area is mainly used for collimating and controlling light, and most of the light in this area is collimated to ensure that the light beam angle is small. Preferably, the rotation change of this part of the curved surface is smaller than that of the lower light-emitting area. The lower light-emitting area is mainly for the secondary light spot to emit light, and the shape rotation of this part of the area is larger, so that the refraction angle of the LED light after passing through the lens is larger, and while the light spot has a better mixing effect, the roundness of the main light spot can be guaranteed. The experimental results show that the light spot of the conventional scale armor shape is not round enough and has no clear cut-off line; while in the effect of the optical mixing lens, the main light spot is round and the secondary light spot is soft and uniform, which has a better visual effect and meets the range requirements.

[0033] Furthermore, the optical mixing lens is made of PC material, but is not limited thereto.

[0034] In one implementation, the first light exit area and the second light exit area are both cone-shaped; a first recessed area 21 is provided at the center of the first light exit area, a second recessed area 22 is provided at the center of the second light exit area, and the first light exit area is located within the second recessed area.

[0035] Provided is a lighting lamp, comprising a PCB board 4 integrated with a light-emitting body 5, and the optical mixing lens as described above, wherein the light-emitting body can be an LED lamp bead, which is aligned with the first light-emitting area and emits light through the first light-emitting area and the second light-emitting area.

[0036] Furthermore, the optical light-mixing lens includes two or more connected lenses; the number of light-emitting bodies corresponds to the number of optical light-mixing lenses. It is understood that in actual applications, the number and arrangement of optical light-mixing lenses can be increased as needed, for example, in scenarios such as headlights designed for sports.

[0037] The above is an explanation of the optical mixing lens and lighting lamp of the present invention to help understand the present invention; however, the implementation of the present invention is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, and simplifications made without departing from the principles of the present invention shall be considered equivalent replacement methods and shall be included in the scope of protection of the present invention.

Claims

1. An optical mixing lens, characterized in that: It comprises a second light-emitting area consisting of an upper light-emitting area and a lower light-emitting area; the outer surface of the second light-emitting area is rotated in a phyllotaxy; The upper light emitting area is located on a side away from the preset light emitting body, and the lower light emitting area is located on a side close to the preset light emitting body; the shadow area of ​​the transverse cross-section of the upper light emitting area is larger than the shadow area of ​​the transverse cross-section of the lower light emitting area, and there is a smooth transition from the outer surface of the upper light emitting area to the outer surface of the lower light emitting area.

2. The optical mixing lens according to claim 1, wherein: It also includes a first light-emitting area, which is a scale-armor mixed light-emitting area; the second light-emitting area forms a leaf-sequence rotation surrounding the first light-emitting area with the first light-emitting area as the center of the circle.

3. The optical mixing lens according to claim 2, wherein: The amount of rotational change of the curved surface of the upper light emitting area is smaller than the amount of rotational change of the curved surface of the lower light emitting area.

4. The optical mixing lens according to claim 2, wherein: The optical mixing lens is made of PC material.

5. The optical mixing lens according to claim 2, wherein: The phyllotaxy rotation is a unidirectional phyllotaxy rotation.

6. The optical mixing lens according to any one of claims 2 to 5, wherein: The first light exit area and the second light exit area are both cone-shaped; a first recessed area is provided at the center of the first light exit area, a second recessed area is provided at the center of the second light exit area, and the first light exit area is located in the second recessed area.

7. A lighting lamp, characterized in that: It comprises a PCB board integrated with a light-emitting body, and the optical mixing lens according to any one of claims 2 to 6; the light-emitting body is aligned with the first light-emitting area.

8. The lighting lamp according to claim 7, wherein The optical light-mixing lenses include two or more lenses connected together; the number of the light-emitting bodies corresponds to the number of the optical light-mixing lenses.

9. The lighting lamp according to claim 7, wherein The luminous body is an LED lamp bead.

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