Lens and lamp

Abstract

The invention provides a lens and a lamp. The lens comprises a lens body, and the lens body is connected with a light-emitting assembly of the lamp. The light inlet cavity is located at the end, close to the light-emitting assembly, of the lens body and comprises a light mixing part, the light mixing part is located at the end, away from the light-emitting assembly, of the light inlet cavity, and the light mixing part is configured to refract light rays emitted by the light-emitting assembly; the light rays refracted by the light mixing part intersect in the lens; the light control part is located at the end, away from the light emitting assembly, of the lens body, light rays refracted by the light mixing part intersect between the light mixing part and the light control part, and the light control part is configured to refract the light rays emitted from the light mixing part so as to control the light emitting angle of the light rays. After light emitted by the light-emitting assembly passes through the lens, uniform light mixing can be achieved, and meanwhile the effect that the light is emitted outwards at a small angle is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting, and particularly to a lens and a lamp. Background Art

[0002] In traditional light distribution components, in order to control the light to emit at a relatively small angle, a single-segment free curve is usually adopted at the top of the low beam aperture of the light distribution component to collimate the light. However, this often easily leads to uneven color mixing. Especially when the light distribution component is assembled on an LED lamp, the chip of the lamp emits blue light. By applying a phosphor on the excitation surface and making the blue light hit the phosphor, the blue light and the yellow light can be mixed to form white composite light for emission. However, existing LED lamps have the problem of uneven spatial distribution of chromaticity, that is, uneven phosphor coating, which easily causes secondary light spots on the light-emitting chip and affects the light output effect of the lamp.

[0003] In view of this, it is indeed necessary to provide a lens and a lamp to control the light emission angle while better mixing light. Summary of the Invention

[0004] The purpose of the present invention is to provide a lens capable of mixing light and controlling the light emission angle.

[0005] To achieve the above purpose, the present invention provides a lens, comprising:

[0006] A lens body, which is connected to the light-emitting component of the lamp;

[0007] An incident light cavity, located at one end of the lens body close to the light-emitting component. The incident light cavity includes a light mixing part, and the light mixing part is located at one end of the incident light cavity far from the light-emitting component. The light mixing part is configured to refract the light emitted by the light-emitting component, and the light refracted by the light mixing part intersects in the lens;

[0008] A light control part, located at one end of the lens body far from the light-emitting component. The light refracted by the light mixing part intersects between the light mixing part and the light control part. The light control part is configured to refract the light refracted by the light mixing part again to control the light emission angle of the light.

[0009] As a further improvement of the present invention, the light mixing part includes at least two concentric first rings, and the first rings have first arc surfaces protruding towards the light-emitting component, and the curvatures of any two adjacent first arc surfaces are different.

[0010] As a further improvement of the present invention, the light control part includes at least two concentric second rings, and the second rings have second arc surfaces protruding in a direction away from the light-emitting component, and the curvature of each second arc surface is the same.

[0011] As a further improvement of the present invention, the light mixing part includes at least two first rings, the light control part includes at least two second rings, and the number of the first rings is the same as that of the second rings.

[0012] As a further improvement of the present invention, the first rings and the second rings are arranged in one-to-one correspondence, and the light refracted by any one of the first rings intersects at the focus of the second ring corresponding to the first ring.

[0013] As a further improvement of the present invention, the whole of the light mixing part protrudes towards the side of the light emitting component.

[0014] As a further improvement of the present invention, the diameter of the second ring is between 10 and 30 mm.

[0015] As a further improvement of the present invention, the angle between the light emitted by the light emitting component and the axis of the lens body is between 0° and 45°.

[0016] As a further improvement of the present invention, 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 control part.

[0017] Another object of the present invention is to provide a lamp including the above lens.

[0018] To achieve the above object, the present invention provides a device including the above lens.

[0019] The beneficial effects of the present invention are as follows: Compared with the prior art, through the light mixing part provided in the lens of the present invention, the light will intersect between the light mixing part and the light control part after being refracted by the light mixing part, that is, the light refracted by the light mixing part intersects inside the lens to form a virtual focus, and the light mixing is completed inside the lens, and then is refracted by the light control part and emitted outwards. Compared with mixing 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 emission is uniform. Description of the Drawings

[0020] Figure 1 is a three-dimensional structure diagram of the lens according to Embodiment 1 of the present invention.

[0021] Figure 2 is Figure 1 a three-dimensional structure diagram of the lens shown from another angle.

[0022] Figure 3 is Figure 1 a sectional view of the lens shown.

[0023] Figure 4 is Figure 1Optical path diagram of the lens shown

[0024] Description of reference numerals:

[0025] 100 - Lens

[0026] 110 - Lens body, 111 - Axis of the lens body, 120 - Light - input cavity, 130 - Light - mixing part, 131 - First ring, 1311 - First arc surface, 140 - Light - control part, 141 - Second ring, 1411 - Second arc surface, 150 - Non - light - emitting surface, 170 - Light - output cavity

[0027] 200 - Focus

[0028] 300 - Light - emitting component, 310 - Substrate, 320 - Light - emitting unit Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments

[0030] Here, it should be noted that in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, while other details less related to the present invention are omitted

[0031] In addition, it should also be noted that the term "comprises", "comprising" or any other variation thereof is intended to cover a non - exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article or device

[0032] The present invention provides a lens 100 applied to a lamp. The lens 100 will be described below with reference to specific embodiments

[0033] Please refer to Figures 1 to 4 As shown, it is a specific embodiment of a lens 100 of the present invention. The lens 100 is applied to a lamp and is installed on the light - emitting component 300 of the lamp. The lens 100 includes a lens body 110. At one end of the lens body 110 in contact with the light - emitting component 300, a light - input cavity 120 surrounding the light - emitting component 300 is provided. The light emitted by the light - emitting component 300 first enters the light - input cavity 120. A light - mixing part 130 is provided in the light - input cavity 120. Specifically, the light - mixing part 130 is located at one end of the light - input cavity 120 away from the light - emitting component 300. The light - mixing part 130 is configured to refract the light emitted by the light - emitting component 300, and the light refracted by the light - mixing part 130 intersects in the lens 100

[0034] The lens 100 further includes a light control part 140. The light control part 140 is located at one end of the light mixing part 130 away from the light emitting component 300. The light rays refracted by the light mixing part 130 intersect between the light mixing part 130 and the light control part 140. The light rays refracted by the light mixing part 130 and intersecting then are refracted by the light control part 140 and emitted outward. That is, the light control part 140 can control the light emitting angle of the light rays. The side of the light control part 140 away from the light mixing part 130 is the light emitting surface of the lens 100. The light rays emitted by the light emitting component 300 are finally emitted out of the lens 100 through the light emitting surface.

[0035] By providing the light mixing part 130 in the lens 100, the light rays will intersect between the light mixing part 130 and the light control part 140 after being refracted by the light mixing part 130, and the light mixing is completed inside the lens 100. Then, after being refracted by the light control part 140, the light rays emitted by the light emitting component 300 can finally be emitted out of the lens 100 at a smaller angle, forming a uniform light emitting surface. Compared with performing light mixing on the light emitting surface of the lens 100, the lens 100 in this embodiment can not only perform uniform light mixing, but also better control the light emitting angle of the light rays and ensure that the light rays are emitted at a small angle.

[0036] One end of the lens body 110 away from the light emitting component 300 further includes a non-light emitting surface 150 disposed around the light control part 140. The non-light emitting surface 150 does not emit light outward, so as to achieve the effect that only the central part of the lens 100 emits light.

[0037] As Figure 3 shown, in this embodiment, the light mixing part 130 includes at least two concentric first rings 131. Each first ring 131 has a second arc surface protruding in the direction away from the light emitting component 300. As Figure 3 shown, the light rays emitted by the light emitting component 300 will pass through a plurality of first rings 131, and the light rays passing through the same first ring 131 will intersect. That is, the light rays passing through several first rings 131 will all intersect. The several first rings 131 make the light mixing more uniform, and the light emitting effect after the light rays are finally refracted by the light control part 140 is better.

[0038] The first ring 131 has a first arc surface 1311 protruding toward the light emitting component 300. The curvatures of any two adjacent first arc surfaces 1311 are different, and the light rays refracted by the two adjacent first arc surfaces 1311 will not intersect with each other.

[0039] In this embodiment, the light mixing part 130 protrudes toward the side of the light emitting component 300 as a whole, that is, the curvatures of the respective first rings 131 gradually decrease outward from the axis 111 of the lens body, so that the light rays refracted by the respective first rings 131 are all emitted toward the light control part 140.

[0040] In this embodiment, the light control part 140 includes a plurality of second rings 141 that are successively surrounded, and the curvature of each second ring 141 is the same. The exit angle of the light refracted by the light mixing part 130 is relatively large. By using the light control part 140 provided at the light exit surface of the lens 100, after the light is refracted by the second ring 141 of the light control part 140, it can be emitted outward at a smaller angle, avoiding excessive dispersion of the light and achieving a better lighting effect. At the same time, the light refracted by the light control part 140 is emitted outward in parallel.

[0041] In some embodiments, the second ring 141 can also be a toroidal convex lens. In other embodiments, other optical structures can also be used, and the present invention does not limit this.

[0042] In this embodiment, the light control part 140 is arranged corresponding to the light mixing part 130. All the light refracted by the light mixing part 130 is refracted by the light control part 140 and then emitted outward. At the same time, the number of the second rings 141 is the same as the number of the first rings 131, and the second rings 141 and the first rings 131 are arranged in one-to-one correspondence, that is, the light emitted after being refracted by each first ring 131 intersects and then passes through the corresponding second ring 141, and is refracted by the second ring 141 and then emitted outward, and the light beams do not interfere with each other, avoiding affecting the light exit effect.

[0043] In this embodiment, the intersection points of the light refracted by any one of the first rings 131 are all located on the focal point 200 of the second ring 141 corresponding to the first ring 131. In this way, the light is refracted by the second ring 141 and is emitted outward in parallel, and the visual effect is better. The second ring 141 has a second arc surface 1411 that protrudes away from the light emitting component 300, and the curvature of each second arc surface 1411 is the same. In this way, the light beams refracted by each second ring 141 and emitted outward are parallel to each other, presenting a better light exit effect.

[0044] The lens body 110 further includes an exit cavity 170 at one end away from the light incident cavity 120. The exit cavity 170 includes an exit surface corresponding to the light incident cavity 120, and a cavity wall that surrounds the lens body axis 111 and extends away from the light incident cavity 120 from the exit surface. The cavity wall of the exit cavity 170 is made of a non-reflective material. When a very small amount of light happens to be emitted at the junction of each second ring 141, it will also be absorbed by the cavity wall of the exit cavity 170 and will not affect the final light exit effect.

[0045] In this embodiment, the exit direction of the light refracted by the second ring 141 is parallel to the lens body axis 111. In other embodiments, according to actual needs, the light can also be set to exit at other angles, and the present invention does not limit this.

[0046] 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 be within other ranges according to the actual size of the lamp and the size of the light emitting surface.

[0047] 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 plurality of first rings 131 in the light mixing portion 130 and will not be emitted onto the side wall of the light input cavity 120, thereby avoiding waste.

[0048] In some other embodiments, according to the area sizes of the light mixing unit 130 and the light controlling unit 140, the angle between the light emitted by the light emitting component 300 and the axis 111 of the lens body can also be adaptively adjusted to be greater than or less than the above range, and the present invention is not limited to this.

[0049] 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 .

[0050] like Figure 4 As shown, the lamp (not shown) in the present invention also includes a light-emitting component 300, the light-emitting component 300 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 the present 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.

[0051] In summary, the lens 100 of the present invention includes a light mixing part 130 and a light controlling part 140. The light emitted by the light-emitting component 300 is refracted by the first ring 131 on the light mixing part 130, and then intersects between the light mixing part 130 and the light controlling part 140, so as to achieve sufficient light mixing inside the lens 100. The light after light mixing is refracted by the light controlling part 140 and then 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 control the light to be emitted outward at a small angle, which significantly improves the user's visual experience.

[0052] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A lens, which is applied to a lamp, Characterized in that, The lens includes: A lens body (110), and the lens body (110) is connected to a light-emitting component (300) of the lamp; An incident light cavity (120), which is located at one end of the lens body (110) close to the light-emitting component (300). The incident light cavity (120) includes a light mixing part (130), and the light mixing part (130) is located at one end of the incident light cavity (120) far from the light-emitting component (300). The light mixing part (130) is configured to refract the light emitted by the light-emitting component (300), and the refracted light intersects in the lens after passing through the light mixing part (130); A light control part (140), which is located at one end of the lens body (110) far from the light-emitting component (300). The refracted light after passing through the light mixing part (130) intersects between the light mixing part (130) and the light control part (140). The light control part (140) is configured to refract the refracted light after passing through the light mixing part (130) again to control the light output angle.

2. The lens according to claim 1, Characterized in that, The light mixing part (130) includes at least two concentric first rings (131). The first ring (131) has a first arc surface (1311) protruding towards the light-emitting component (300), and the curvatures of any two adjacent first arc surfaces (1311) are different.

3. The lens according to claim 1, Characterized in that, The light control part (140) includes at least two concentric second rings (141). The second ring (141) has a second arc surface (1411) protruding in a direction away from the light-emitting component (300), and the curvature of each second arc surface (1411) is the same.

4. The lens according to claim 1, Characterized in that, The light mixing part (130) includes at least two first rings (131), and the light control part (140) includes at least two second rings (141). The number of the first rings (131) is the same as the number of the second rings (141).

5. The lens according to claim 4, Characterized in that, The first rings (131) and the second rings (141) are arranged in one-to-one correspondence, and the refracted light after passing through any one of the first rings (131) intersects at the focus of the second ring (141) corresponding to the first ring (131).

6. The lens according to claim 1, Characterized in that, The whole light mixing part (130) protrudes towards the side of the light-emitting component (300).

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

8. The lens according to claim 1, Characterized in that, 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, Characterized in that, One end of the lens body (110) away from the light-emitting component (300) includes a non-light-emitting surface (150), and the non-light-emitting surface (150) surrounds the outer periphery of the light control portion (140).

10. A lighting fixture, characterized in that it includes the lens according to any one of claims 1 to 9.

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