Dimming system and lamp

Abstract

The utility model relates to the technical field of lamps, in particular to a light changing system and a lamp, the light changing system comprises a reflection cup, a first lens and a second lens which are sequentially arranged, the reflection cup, the first lens and the second lens are coaxially arranged, the opening side of the reflection cup corresponds to a first incident plane of the first lens, and the opening side of the second lens corresponds to a second incident plane of the second lens. The first emergent surface of the first lens corresponds to the second incident surface of the second lens, the first emergent surface and the second incident surface are both uneven curved surfaces, and the second lens can rotate relative to the first lens. The reflection cup enables light entering the first lens to be uniform in energy and color as much as possible, then the light passes through the first lens and the second lens, the second lens is rotated relative to the first lens, and the first emergent surface and the second incident surface are uneven, so that the light emitting efficiency is improved. The gap distance between the first emergent surface and the second incident surface can be changed, so that the propagation path of light is changed, the light distribution pattern can be changed, and the distance between the first lens or the second lens and the light source does not need to be changed.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a light-changing system and a lamp. Background Art

[0002] In daily life, downlights and spotlights usually have lenses, which can be used to change the distribution of light, thereby adjusting the shape of the light distribution pattern generated by the light source. However, after the existing downlights and spotlights are assembled and finalized, the changes in the light distribution are also finalized with the finalization of the product. Except for changing the installation angle of the entire downlight or spotlight later, it is difficult to adjust the light distribution pattern.

[0003] There is a way to change the light distribution pattern, which is to adjust the distance from the light source to the lens. However, the actual operation is difficult. On the one hand, after the lamp is assembled and finalized, the distance from the light source to the lens is basically fixed. Even if this distance is not fixed, the lamp is often installed in a high place, such as in a suspended ceiling, and it is difficult to adjust the distance from the light source to the lens. Therefore, it is still difficult to change the light distribution pattern of existing lamps. Utility Model Content

[0004] The purpose of the utility model is to provide a light-changing system and a lamp to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, the utility model provides a light-changing system, comprising a reflective cup, a first lens and a second lens arranged in sequence, the reflective cup, the first lens and the second lens being coaxially arranged, the opening side of the reflective cup corresponding to the first incident surface of the first lens, the first exit surface of the first lens corresponding to the second incident surface of the second lens, the first exit surface and the second incident surface are both uneven curved surfaces, and the second lens can rotate relative to the first lens.

[0007] With the light-changing system of the utility model, the reflective cup is arranged to divide the light energy into two parts, one part is reflected and the other part is not reflected, and the two parts of light energy are superimposed before entering the first lens by the control of the reflective cup, so that the energy and color of the light energy entering the first lens are as uniform as possible, and then the light passes through the first lens and the second lens, and the second lens is rotated relative to the first lens, and the first exit surface and the second incident surface are both uneven, so that the gap distance between the first exit surface and the second incident surface can be changed, thereby changing the propagation path of the light, so that the light distribution pattern can be changed without changing the distance between the first lens or the second lens and the light source.

[0008] As a preferred technical solution of the present utility model, the first incident surface is a plane.

[0009] As a preferred technical solution of the utility model, the first emission surface and the second incident surface are both uneven continuous curved surfaces.

[0010] As a preferred technical solution of the present utility model, the second emission surface of the second lens is a convex arc surface or a convex spherical surface.

[0011] As a preferred technical solution of the utility model, the inner side of the reflective cup is a reflective surface.

[0012] As a preferred technical solution of the utility model, a boss is provided on the first exit surface, the boss is coaxially arranged with the first lens, a groove is provided on the second incident surface, the groove is coaxially arranged with the second lens, and the boss is matched with the groove.

[0013] With this structure, the boss and the groove cooperate to serve as a limit position for the second lens to rotate relative to the first lens, thereby facilitating the rotation adjustment of the first lens or the second lens.

[0014] As a preferred technical solution of the utility model, the light-changing system further includes a driving component, and the driving component is used to drive one of the first lens and / or the second lens to rotate relative to the other.

[0015] As a preferred technical solution of the utility model, the first lens is a plastic lens or a glass lens, and the second lens is a plastic lens or a glass lens.

[0016] In a second aspect, the utility model further provides a lamp, comprising a light source and a light-changing system as described in any one of the above items, wherein the light source is arranged on the closed side of the reflective cup.

[0017] In a lamp described in the utility model, the reflective cup is set to divide the light energy into two parts, one part is reflected and the other part is not reflected. The two parts of light energy are superimposed before entering the first lens through the control of the reflective cup, so that the energy and color of the light energy entering the first lens are as uniform as possible, and then the light passes through the first lens and the second lens. By rotating the second lens relative to the first lens, and the first exit surface and the second incident surface are both uneven, the gap distance between the first exit surface and the second incident surface can be changed, thereby changing the propagation path of light, so that the light distribution pattern can be changed without changing the spacing of the first lens or the second lens relative to the light source.

[0018] As a preferred technical solution of the present utility model, the light source is an LED light source.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] The utility model discloses a light-changing system and a lamp, wherein the reflective cup is arranged to divide the light energy into two parts, one part is reflected and the other part is not reflected, and the two parts of the light energy are superimposed before entering the first lens through the control of the reflective cup, so that the energy and color of the light energy entering the first lens are as uniform as possible, and then the light passes through the first lens and the second lens, and the second lens is rotated relative to the first lens, and the first exit surface and the second incident surface are both uneven, so that the gap distance between the first exit surface and the second incident surface can be changed, thereby changing the propagation path of the light, so that the light distribution pattern can be changed without changing the spacing of the first lens or the second lens relative to the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a lamp with a dimming system;

[0022] Figure 2 It is a schematic diagram of the light propagation path of the light-changing system;

[0023] Figure 3 Schematic diagram of the light propagation path of the reflective cup;

[0024] Figure 4 Schematic diagram of energy distribution at the bottom of the first lens (XY plane);

[0025] Figure 5 Schematic diagram of the energy distribution at the bottom of the first lens (YZ plane).

[0026] Markings in the figure: 1-reflective cup, 11-reflecting surface, 2-first lens, 21-boss, 22-first incident surface, 23-first exit surface, 3-second lens, 31-groove, 32-second incident surface, 33-second exit surface, 4-light source. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0028] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0030] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0031] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0032] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0033] In the related art, the light distribution pattern can be changed by adjusting the distance from the light source to the lens, but the actual operation is difficult. On the one hand, after the lamp is assembled and finalized, the distance from the light source to the lens is basically fixed. Even if this distance is not fixed, the lamp is often installed in a high place, such as in a suspended ceiling, and it is difficult to adjust the distance from the light source to the lens. Therefore, it is still difficult to change the light distribution pattern of the existing lamp. For this reason, the technical solution of this application is produced. Figures 1 to 5 To elaborate.

[0034] Example 1

[0035] like Figures 1 to 5 As shown, a light-changing system described in the utility model comprises a reflective cup 1, a first lens 2 and a second lens 3 which are arranged in sequence, the reflective cup 1, the first lens 2 and the second lens 3 are coaxially arranged, the inner side of the reflective cup 1 is a reflecting surface 11, the first lens 2 is a plastic lens or a glass lens, and the second lens 3 is a plastic lens or a glass lens.

[0036] like Figure 1 As shown, the opening side of the reflective cup 1 corresponds to the first incident surface 22 of the first lens 2, the first incident surface 22 is a plane, the first exit surface 23 of the first lens 2 corresponds to the second incident surface 32 of the second lens 3, and the second exit surface 33 of the second lens 3 is a convex arc surface or a convex spherical surface.

[0037] like Figure 1 and Figure 2 As shown, the first emission surface 23 and the second incident surface 32 are both uneven curved surfaces, preferably continuous curved surfaces, and the second lens 3 can rotate relative to the first lens 2.

[0038] like Figure 1 and Figure 2 As shown, a boss 21 is provided on the first exit surface 23, and the boss 21 is coaxially arranged with the first lens 2. A groove 31 is provided on the second incident surface 32, and the groove 31 is coaxially arranged with the second lens 3, and the boss 21 is matched with the groove 31. With this structure, the boss 21 and the groove 31 can be used as a limit position for the rotation of the second lens 3 relative to the first lens 2, which is convenient for the rotation adjustment of the first lens 2 or the second lens 3.

[0039] In a specific embodiment, the light varying system further includes a driving component, and the driving component is used to drive one of the first lens 2 and / or the second lens 3 to rotate relative to the other.

[0040] For example, a circle of racks is provided on the periphery of the second lens 3, and then a motor drives the gear to mesh with the rack, so as to drive the rotation of the second lens 3. This method can be used for lamps in closed spaces, such as car lights, or smart home appliances, such as remote-controlled lamps. Of course, the first lens 2 can also be driven to rotate, or the first lens 2 and the second lens 3 can be driven to rotate asynchronously at the same time, both of which can change the relative position of the first exit surface 23 and the second incident surface 32, thereby changing the spacing between the concave and convex surfaces.

[0041] In the light-changing system described in this embodiment, the reflective cup 1 is arranged to divide the light energy into two parts, such as Figure 3 As shown, one part is reflected and the other part is not reflected. Through the control of the reflective cup 1, the two parts of light energy are superimposed before entering the first lens 2, so that the energy and color of the light energy entering the first lens 2 are as uniform as possible, as shown in FIG. Figure 4 and Figure 5 As shown; then the light passes through the first lens 2 and the second lens 3. By rotating the second lens 3 relative to the first lens 2, and the first exit surface 23 and the second incident surface 32 are both uneven, the gap distance between the first exit surface 23 and the second incident surface 32 can be changed, thereby changing the propagation path of the light, so that the light distribution pattern can be changed without changing the distance between the first lens 2 or the second lens 3 and the light source 4.

[0042] Example 2

[0043] like Figures 1 to 5 As shown, a lamp described in the utility model includes a light source 4 and a light-changing system as described in Example 1, wherein the light source 4 is arranged on the closed side of the reflective cup 1, that is, the light source 4 and the first lens 2 are arranged on the front and rear sides of the reflective cup 1 relatively; in this embodiment, the light source 4 is an LED light source.

[0044] In the lamp described in the present embodiment, the reflective cup 1 is set to divide the light energy into two parts, one part is reflected and the other part is not reflected. The two parts of light energy are superimposed before entering the first lens 2 through the control of the reflective cup 1, so that the energy and color of the light energy entering the first lens 2 are as uniform as possible, and then the light passes through the first lens 2 and the second lens 3. By rotating the second lens 3 relative to the first lens 2, and the first exit surface 23 and the second incident surface 32 are both uneven, the gap distance between the first exit surface 23 and the second incident surface 32 can be changed, thereby changing the propagation path of the light, so that the light distribution pattern can be changed without changing the distance between the first lens 2 or the second lens 3 and the light source 4.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-changing system, characterized in that: The invention comprises a reflective cup (1), a first lens (2) and a second lens (3) which are arranged in sequence. The reflective cup (1), the first lens (2) and the second lens (3) are coaxially arranged. The opening side of the reflective cup (1) corresponds to a first incident surface (22) of the first lens (2). The first exit surface (23) of the first lens (2) corresponds to a second incident surface (32) of the second lens (3). Both the first exit surface (23) and the second incident surface (32) are uneven curved surfaces. The second lens (3) can rotate relative to the first lens (2).

2. The light-changing system according to claim 1, characterized in that: The first incident surface (22) is a plane.

3. The light-changing system according to claim 1, characterized in that: The first emission surface (23) and the second incident surface (32) are both uneven continuous curved surfaces.

4. The light-changing system according to claim 1, characterized in that: The second emission surface (33) of the second lens (3) is a convex arc surface or a convex spherical surface.

5. The light-changing system according to claim 1, characterized in that: The inner side of the reflective cup (1) is a reflective surface (11).

6. The light-changing system according to claim 1, characterized in that: A boss (21) is provided on the first exit surface (23), the boss (21) is coaxially arranged with the first lens (2), a groove (31) is provided on the second incident surface (32), the groove (31) is coaxially arranged with the second lens (3), and the boss (21) is matched with the groove (31).

7. The light-changing system according to claim 1, characterized in that: It also comprises a driving component, wherein the driving component is used to drive one of the first lens (2) and / or the second lens (3) to rotate relative to the other.

8. The light-changing system according to any one of claims 1 to 7, characterized in that: The first lens (2) is a plastic lens or a glass lens, and the second lens (3) is a plastic lens or a glass lens.

9. A lamp, characterized in that: It comprises a light source (4) and a light-changing system as claimed in any one of claims 1 to 8, wherein the light source (4) is arranged on the closed side of the reflective cup (1).

10. The lamp according to claim 9, characterized in that: The light source (4) is an LED light source.

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