Lens and lamp

Abstract

A lens (100) and a lamp. The lens (100) comprises: a lens body (110), which is connected to a light-emitting component (300) of the lamp; a light-incident cavity (120), which is located at the end of the lens body (110) close to the light-emitting component (300) and comprises a light mixing portion (130), the light mixing portion (130) being located at the end of the light-incident cavity (120) away from the light-emitting component (300), the light mixing portion (130) being configured to refract the light rays emitted by the light-emitting component (300), and the light rays refracted by the light mixing portion (130) intersecting in the lens (100); and a light control portion (140), which is located at the end of the lens body (110) away from the light-emitting component (300), the light rays refracted by the light mixing portion (130) intersecting between the light mixing portion (130) and the light control portion (140), and the light control portion (140) being configured to refract the light rays emitted from the light mixing portion (130) to control the light emission angle of the light rays. The light rays emitted by the light-emitting component (300) pass through the lens (100), which can achieve uniform light mixing and the effect of the light being emitted outward at a small angle.

Description

Lenses and lamps

[0001] This application claims priority to Chinese patent applications with application date of December 11, 2023, application number 202311697594.1, invention name “Lens and Lamp” and application date of December 11, 2023, application number 202323370678.2, invention name “Lens and Lamp”. The entire contents of these patent applications are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of lighting technology, and in particular to a lens and a lamp. Background Art

[0003] In traditional light distribution components, in order to control the light to be emitted at a smaller angle, a single-segment free curve is usually used at the top of the low beam hole of the light distribution component to collimate the light. However, this often leads to uneven color mixing. In particular, when the light distribution component is assembled on an LED lamp, the lamp chip emits blue light. By applying phosphor to the excitation surface and allowing the blue light to hit the phosphor, the blue light can be mixed with the yellow light to form a white composite light. However, existing LED lamps have the problem of uneven spatial distribution of color. In other words, the phosphor is unevenly applied, which makes the light-emitting chip prone to generating side spots, affecting the light output effect of the lamp.

[0004] In view of this, it is indeed necessary to provide a lens and a lamp that can better mix light while controlling the light emission angle. Summary of the Invention

[0005] The purpose of this application is to provide a lens that can mix light and control the light emission angle.

[0006] To achieve the above objectives, the present application provides a lens, comprising:

[0007] A lens body connected to the light-emitting component of the lamp;

[0008] a light entrance cavity, located at an end of the lens body close to the light-emitting component, the light entrance cavity including a light mixing portion, the light mixing portion being located at an end of the light entrance cavity away from the light-emitting component, the light mixing portion being configured to refract light emitted by the light-emitting component, the light refracted by the light mixing portion intersecting in the lens;

[0009] The light-controlling portion is located at one end of the lens body away from the light-emitting component. The light refracted by the light-mixing portion intersects between the light-mixing portion and the light-controlling portion. The light-controlling portion is configured to refract the light refracted by the light-mixing portion again to control the light emission angle of the light.

[0010] Optionally, the light mixing portion includes at least two concentrically arranged first circular rings, each of the first circular rings having a first arc surface protruding toward the light-emitting component, and any two adjacent first arc surfaces have different curvatures.

[0011] Optionally, the light-controlling portion includes at least two concentrically arranged second circular rings, each of the second circular rings having a second arc surface convex in a direction away from the light-emitting component, and each of the second arc surfaces has the same curvature.

[0012] Optionally, the light mixing portion includes at least two first circular rings, and the light controlling portion includes at least two second circular rings, and the number of the first circular rings is the same as the number of the second circular rings.

[0013] Optionally, the first circular ring and the second circular ring are arranged in a one-to-one correspondence, and the light refracted by any of the first circular rings intersects at the focus of the second circular ring corresponding to the first circular ring.

[0014] Optionally, the light mixing portion as a whole protrudes toward one side of the light-emitting component.

[0015] Optionally, the diameter of the second ring is between 10 and 30 mm.

[0016] Optionally, the angle between the light emitted by the light emitting component and the axis of the lens body is between 0° and 45°.

[0017] Optionally, one end of the lens body away from the light-emitting component includes a non-light-emitting surface, and the non-light-emitting surface surrounds the outer periphery of the light-controlling portion.

[0018] Another object of the present application is to provide a lamp comprising the above-mentioned lens.

[0019] To achieve the above objectives, the present application provides a device comprising the above lens.

[0020] The beneficial effect of the present application is that compared with the prior art, the lens of the present application has a light mixing portion arranged in the lens, and the light will intersect between the light mixing portion and the light controlling portion after being refracted by the light mixing portion, that is, the light refracted by the light mixing portion intersects inside the lens to form a virtual focus, and the light mixing is completed inside the lens, and then refracted by the light controlling portion and emitted outward. Compared with mixing the light on the light emitting surface of the lens, the light emitted by the light-emitting component can be emitted from the lens at a smaller angle, and at the same time the light mixing effect is better and the light output is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a three-dimensional structural diagram of a lens according to a first embodiment of the present application.

[0022] FIG2 is a three-dimensional structural diagram of the lens shown in FIG1 from another angle.

[0023] FIG3 is a cross-sectional view of the lens shown in FIG1 .

[0024] FIG4 is a diagram showing an optical path of the lens shown in FIG1 .

[0025] Description of reference numerals:

[0026] 100-lens;

[0027] 110 - lens body, 111 - lens body axis, 120 - light entrance cavity, 130 - light mixing unit, 131 - first circular ring, 1311 - first arc surface, 140 - light control unit, 141 - second circular ring, 1411 - second arc surface, 150 - non-light exit surface, 170 - light exit cavity;

[0028] 200-focus;

[0029] 300-light-emitting component, 310-substrate, 320-light-emitting unit. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of this application clearer, this application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] It should be noted here that in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the scheme of the present application are shown in the accompanying drawings, while other details that are not closely related to the present application are omitted.

[0032] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] The present application provides a lens 100 for use in a lamp. The lens 100 will be described below with reference to specific embodiments.

[0034] Please refer to Figures 1 to 4, which are a specific embodiment of a lens 100 of the present application. The lens 100 is applied to a lamp and installed on the light-emitting component 300 of the lamp. The lens 100 includes a lens body 110. At one end where the lens body 110 is connected to the light-emitting component 300, a light entrance cavity 120 surrounding the light-emitting component 300 is provided. The light emitted by the light-emitting component 300 first enters the light cavity 120. A light mixing portion 130 is provided in the light entrance cavity 120. Specifically, the light mixing portion 130 is located at one end of the light entrance cavity 120 away from the light-emitting component 300. The light mixing portion 130 is configured to refract the light emitted by the light-emitting component 300, and the light refracted by the light mixing portion 130 intersects in the lens 100.

[0035] The lens 100 further includes a light-controlling portion 140, which is located at the end of the light-mixing portion 130 away from the light-emitting component 300. The light refracted by the light-mixing portion 130 intersects between the light-mixing portion 130 and the light-controlling portion 140. The light refracted and intersected by the light-mixing portion 130 is then refracted by the light-controlling portion 140 and then emitted outward. That is, the light-controlling portion 140 can control the light emission angle. The side of the light-controlling portion 140 away from the light-mixing portion 130 is the light-emitting surface of the lens 100. The light emitted by the light-emitting component 300 is finally emitted out of the lens 100 through the light-emitting surface.

[0036] Through the light mixing portion 130 provided in the lens 100, the light will intersect between the light mixing portion 130 and the light control portion 140 after being refracted by the light mixing portion 130, and the light mixing is completed inside the lens 100. After that, after being refracted by the light control portion 140, the light emitted by the light-emitting component 300 can finally be emitted through the lens 100 at a smaller angle, forming a uniform light output surface. Compared with mixing the light on the light output surface of the lens 100, the lens 100 in this embodiment can better control the output angle of the light while performing uniform light mixing, ensuring that the light is emitted at a small angle.

[0037] The end of the lens body 110 away from the light emitting assembly 300 further includes a non-light emitting surface 150 disposed around the light control portion 140 . The non-light emitting surface 150 does not emit light outward, so that the lens 100 emits light only from the center.

[0038] As shown in Figure 3, in this embodiment, the light mixing portion 130 includes at least two concentrically arranged first rings 131, each first ring 131 having a second arc surface that protrudes in a direction away from the light-emitting component 300. As shown in Figure 3, the light emitted by the light-emitting component 300 will pass through multiple first rings 131, and the light passing through the same first ring 131 will intersect, that is, the light passing through several first rings 131 will intersect. Several first rings 131 make the light mixing more uniform, and the light finally refracted by the light control portion 140 has a better light output effect.

[0039] The first ring 131 has a first arc surface 1311 protruding toward the light emitting assembly 300 . Any two adjacent first arc surfaces 1311 have different curvatures. Light rays refracted by the two adjacent first arc surfaces 1311 will not intersect with each other.

[0040] In this embodiment, the light mixing portion 130 is convex toward the light emitting assembly 300 , that is, the curvature of each first ring 131 gradually decreases from the lens body axis 111 outward, so that the light refracted by each first ring 131 is emitted toward the light control portion 140 .

[0041] In this embodiment, the light control unit 140 includes a plurality of sequentially arranged second circular rings 141, each of which has a uniform curvature. The light refracted by the light mixing unit 130 emits at a relatively large angle. By utilizing the light control unit 140, which is positioned on the light-emitting surface of the lens 100, the light refracted by the second circular rings 141 of the light control unit 140 can be emitted outward at a relatively small angle, thus preventing excessive light dispersion and achieving a better lighting effect. Furthermore, the light refracted by the light control unit 140 is emitted outward in a parallel direction.

[0042] In some embodiments, the second ring 141 may also be an annular convex lens. In other embodiments, optical structures of other structures may also be used, and this application does not limit this.

[0043] In this embodiment, the light control portion 140 is provided corresponding to the light mixing portion 130. All light rays refracted by the light mixing portion 130 are refracted by the light control portion 140 before being emitted outward. At the same time, the number of the second circular rings 141 is the same as the number of the first circular rings 131, and the second circular rings 141 are provided in a one-to-one correspondence with the first circular rings 131. That is, the light rays emitted after being refracted by each first circular ring 131 all pass through the corresponding second circular ring 141 after intersection, and are refracted by the second circular ring 141 before being emitted outward. The light beams will not interfere with each other, thereby avoiding affecting the light emission effect.

[0044] In this embodiment, the point at which light rays refracted by any of the first circular rings 131 intersect is located at the focal point 200 of the second circular ring 141 corresponding to that first circular ring 131. This allows the light rays refracted by the second circular ring 141 to be emitted outward in parallel, resulting in a better visual effect. The second circular rings 141 have second curved surfaces 1411 that bulge away from the light-emitting assembly 300. Each second curved surface 1411 has the same curvature. This allows the light rays refracted by each second circular ring 141 to be emitted outward in parallel, resulting in a better light output effect.

[0045] The lens body 110 also includes a light output cavity 170 away from one end of the light input cavity 120. The light output cavity 170 includes a light output surface corresponding to the light input cavity 120, and a cavity wall surrounding the lens body axis 111 and extending from the light output surface toward the direction away from the light input cavity 120. The cavity wall of the light output cavity 170 is made of non-reflective material. When a very small amount of light happens to be emitted at the intersection of each second ring 141, it will also be absorbed by the cavity wall of the light output cavity 170, which will not affect the final light output effect.

[0046] In this embodiment, the emission direction of the light after being refracted by the second ring 141 is parallel to the axis 111 of the lens body. In other embodiments, the light can be set to be emitted at other angles according to actual needs, and this application does not impose any restrictions on this.

[0047] In this embodiment, the diameters of the first ring 131 and the second ring 141 are between 10 and 30 mm. In other embodiments, the diameters of the first ring 131 or the second ring 141 may also be within other ranges depending on the actual size of the lamp and the size requirements of the light-emitting surface.

[0048] In this embodiment, the angle between the light emitted by the light emitting component 300 and the axis 111 of the light emitting lens body is between 0° and 45°. When the light emitted by the light emitting component 300 is within this angle range, the light can pass through the multiple first rings 131 in the light mixing unit 130 and will not be emitted to the side wall of the light input cavity 120, thereby avoiding waste.

[0049] In some other embodiments, according to the area size of the light mixing part 130 and the light control part 140, the angle between the light emitted by the light emitting component 300 and the lens body axis 111 can also be adaptively adjusted to be larger or smaller than the above range, and this application does not impose any restrictions on this.

[0050] In this embodiment, the area of ​​the light-controlling portion 140 is greater than or equal to the area of ​​the light-mixing portion 130 , so that all the light emitted from the light-mixing portion 130 enters the light-controlling portion 140 .

[0051] As shown in Figure 4, the lamp (not shown) in the present application also includes a light-emitting component 300, which includes a light-emitting unit 320 and a substrate 310. One end of the lens 100 is connected to the substrate 310, and the light-entry cavity 120 is covered above the light-emitting unit 320. In this embodiment, the light-emitting unit 320 is an LED lamp bead, and the substrate 310 is a PCB flexible circuit board. In other embodiments, the light-emitting unit 320 may also be other types of light-emitting parts.

[0052] In summary, the lens 100 of the present application includes a light mixing portion 130 and a light control portion 140. The light emitted by the light-emitting component 300 is refracted by the first circular ring 131 on the light mixing portion 130, and then intersects between the light mixing portion 130 and the light control portion 140 to achieve sufficient light mixing inside the lens 100. The light after mixing is then refracted by the light control portion 140 and emitted outward in parallel. The lens 100 has a better light mixing effect, and the light emitting surface emits light evenly, avoiding the generation of secondary light spots. At the same time, the light can also be controlled to be emitted outward at a small angle, significantly improving the user's visual experience.

[0053] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A lens, applied to a lamp, wherein: The lens comprises: A lens body (110), the lens body (110) being connected to the light-emitting component (300) of the lamp; A light incident cavity (120) is located at one end of the lens body (110) close to the light emitting component (300), the light incident cavity (120) comprises a light mixing portion (130), the light mixing portion (130) is located at one end of the light incident cavity (120) away from the light emitting component (300), the light mixing portion (130) is configured to refract light emitted by the light emitting component (300), and the light refracted by the light mixing portion (130) intersects in the lens; The light control portion (140) is located at one end of the lens body (110) away from the light emitting component (300), and the light refracted by the light mixing portion (130) intersects between the light mixing portion (130) and the light control portion (140). The light control portion (140) is configured to refract the light refracted by the light mixing portion (130) again to control the light emission angle of the light.

2. The lens according to claim 1, wherein: The light mixing portion (130) comprises at least two concentrically arranged first circular rings (131), the first circular rings (131) having a first arc surface (1311) protruding toward the light emitting component (300), and any two adjacent first arc surfaces (1311) have different curvatures.

3. The lens according to claim 1, wherein: The light control portion (140) comprises at least two concentrically arranged second circular rings (141), the second circular rings (141) having second arc surfaces (1411) protruding in a direction away from the light-emitting component (300), and the curvature of each of the second arc surfaces (1411) is the same.

4. The lens according to claim 1, wherein: The light mixing portion (130) comprises at least two first circular rings (131), and the light control portion (140) comprises at least two second circular rings (141), and the number of the first circular rings (131) is the same as the number of the second circular rings (141).

5. The lens according to claim 4, wherein: The first circular ring (131) and the second circular ring (141) are arranged in one-to-one correspondence, and light refracted by any of the first circular rings (131) intersects at the focus of the second circular ring (141) corresponding to the first circular ring (131).

6. The lens according to claim 1, wherein: The light mixing portion (130) as a whole protrudes toward one side of the light emitting component (300).

7. The lens according to claim 4, wherein: The diameter of the second ring (141) is between 10 and 30 mm.

8. The lens according to claim 1, wherein: The angle between the light emitted by the light emitting component (300) and the axis (111) of the lens body is between 0° and 45°.

9. The lens according to claim 1, wherein: One end of the lens body (110) away from the light-emitting component (300) comprises a non-light-emitting surface (150), and the non-light-emitting surface (150) surrounds the outer periphery of the light-controlling portion (140).

10. A lamp, wherein: A lens comprising the lens according to any one of claims 1 to 9.

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