Silica gel lens and lamp

Abstract

The utility model relates to the field of illumination, in particular to a silica gel lens and a lamp, the silica gel lens comprises an incidence hole, and the incidence hole is used for placing an LED light source; the incident hole comprises a side wall and a top wall, and the longitudinal section of the side wall in the lens is two curves; and the lens is made of a silica gel material. According to the silica gel lens, the characteristics of silica gel are fully utilized, and the side wall of the incident hole of the lens is made into a non-straight surface, so that more light can be controlled to be totally reflected by the reflecting surface and then refracted out of the lens, the light which is directly refracted out of the lens in the middle is reduced, and the light spot effect is better. The lamp is provided with the silica gel lens.

Description

Technical Field

[0001] The utility model relates to the field of lighting, in particular to a silicone lens and a lamp. Background Art

[0002] In recent years, with the development of LED technology, LED lamps have gradually been used in various industries. The lenses commonly used in lamps are made of PC and PMMA materials. Figure 1 As shown, due to the limitations of material properties, in order to smoothly demold during injection molding, the incident hole side wall 111 of the lens 1 made of conventional PC and PMMA materials can only be made into a straight surface (that is, the incident hole side wall 111 is a straight line in the longitudinal section of the lens). This has great limitations in optical design and can no longer fully meet the growing demand. Utility Model Content

[0003] The utility model aims to overcome the deficiency in the prior art that the side wall of the lens entrance hole made of conventional PC and PMMA materials can only be made into a straight surface, and provides a silicone lens and a lamp.

[0004] In a first aspect, the utility model provides a silicone lens, comprising an incident hole, wherein the incident hole is used to place an LED light source; the incident hole comprises a side wall and a top wall, wherein the side wall is two curves in a longitudinal section view in the lens; and the lens is made of silicone material.

[0005] The silicone lens of the utility model makes full use of the characteristics of silicone and makes the side wall of the lens entrance hole into a non-straight surface, so that more light can be controlled to be totally reflected by the reflection surface and then refracted out of the lens, reducing the light directly refracted out of the lens in the middle, so as to achieve a better light spot effect.

[0006] Preferably, the side wall is a profiled surface.

[0007] Preferably, the side wall in the lens has two curved lines with two ends tilted up in the longitudinal section; along the axial direction of the lens, the aperture of the incident hole first decreases and then increases. A special incident hole surface shape is used to control more light to the reflection surface, reduce the light directly refracted in the middle, and make the light spot effect better.

[0008] Preferably, the heights of the two ends are different.

[0009] Preferably, the side wall in the lens has two curved lines with one end tilted up in the longitudinal section, the tilted end being the end away from the light source, and the aperture of the incident hole at the tilted end is increased. A special incident hole surface shape is used to control more light to the reflection surface, reduce the light directly refracted in the middle, and make the light spot effect better.

[0010] Preferably, the side wall is an annular curved surface and is symmetrically arranged along the axial direction of the lens.

[0011] Preferably, the reflective surface of the lens is provided with a scale structure.

[0012] Preferably, the exit surface of the lens comprises a microstructure surface.

[0013] Preferably, the emission surface of the lens is a matte surface or a glossy surface.

[0014] In a second aspect, the utility model provides a lamp, which adopts any of the above-mentioned silicone lenses.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The silicone lens of the utility model makes full use of the characteristics of silicone and makes the side wall of the lens entrance hole into a non-straight surface, so that more light can be controlled to be totally reflected by the reflection surface and then refracted out of the lens, reducing the light directly refracted out of the lens in the middle, so as to achieve a better light spot effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of lenses made of conventional PC and PMMA materials.

[0018] Figure 2 The three-dimensional structure of the silicone lens described in Example 1 of the utility model is shown in FIG. Figure 1 .

[0019] Figure 3 The three-dimensional structure of the silicone lens described in Example 1 of the utility model is shown in FIG. Figure 2 .

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the half-sectioned silicone lens described in Example 1 of the utility model.

[0021] Figure 5 This is a longitudinal cross-sectional view of the silicone lens described in Example 1 of the utility model.

[0022] Figure 6 This is a longitudinal cross-sectional view of the silicone lens described in Example 1 of the utility model.

[0023] Figure 7 This is a light path diagram of the silicone lens described in Example 1 of the utility model.

[0024] Figure 8 This is a longitudinal cross-sectional view of the silicone lens described in Example 2 of the present utility model.

[0025] Markings in the figure:

[0026] 1- Lens,

[0027] 11- entrance hole,

[0028] 111- side wall, 112- top wall,

[0029] 12- Reflective surface,

[0030] 13-Exit surface,

[0031] 131- microstructure surface,

[0032] 14- Buckle;

[0033] 15- Lens axis. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with specific embodiments. 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.

[0035] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can 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 utility model.

[0036] 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 solution of the utility model.

[0037] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0038] In addition, in the description of the embodiments of the present invention, "several", "multiple" 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.

[0039] In addition, in the description of the technical solution of the utility model, 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 communication of two components.

[0040] Example 1

[0041] like Figure 2-5 As shown, a silicone lens 1 comprises an incident hole 11, a reflective surface 12, and an exit surface 13. The incident hole 11 is used to place an LED light source, and light emitted by the LED light source enters the incident hole 11, is reflected by the reflective surface 12, and then exits through the exit surface 13.

[0042] Typically, the lens 1 is a rotating body structure, the incident hole 11 can be set at the bottom of the rotating body, the exit surface 13 can be set at the top of the rotating body, and the reflective surface 12 can be set on the side of the rotating body. In one or more embodiments, the reflective surface 12 of the lens 1 can be provided with a flake structure to achieve uniform light. In one or more embodiments, the exit surface 13 of the lens 1 may include a microstructure surface 131. In an optional embodiment, the microstructure 131 may be composed of a plurality of microstructures (pyramids, prisms, dots, etc.) arranged to achieve uniform light. In one or more embodiments, the exit surface 13 of the lens 1 may be a matte surface or a glossy surface. In one or more embodiments, the lens 1 may be provided with a plurality of buckles 14 to facilitate connection with structures such as lamps.

[0043] The incident hole 11 includes a side wall 111 and a top wall 112 . In an optional embodiment, the side wall 111 is an annular closed curved surface and is symmetrically arranged along the axial direction 15 of the lens 1 , and the top wall 112 is arranged at one end of the side wall 111 close to the light emitting surface 13 .

[0044] The side wall of the incident hole of a conventional lens is a straight surface and does not have much light control capability. The purpose of reducing the proportion of intermediate light can only be achieved by increasing the height of the lens. However, the silicone lens of the utility model achieves the same purpose by adjusting the surface shape of the side wall of the incident hole without changing the height of the lens.

[0045] Specifically, the silicone lens 1 of the present invention is made of silicone material, and silicone is soft after injection molding, so the special-shaped structure (non-straight surface) can also be demolded. Based on this, the present invention sets the side wall 111 as a non-straight surface structure (different from the straight surface of the lens of conventional PC and PMMA materials). In the longitudinal section of the lens, the side wall 111 is two curves. The longitudinal section of the lens passes through the lens origin and the lens axis 15, and divides the lens 1 into two symmetrical structures. The side wall 111 is set as a non-straight surface structure. The side wall 111 is two curves, each of which can be an arc line or an irregular curve. Preferably, the side wall 111 can be a special-shaped surface.

[0046] In an optional embodiment, the side wall 111 is two curves in the longitudinal section of the lens 1, and both ends of each curve are tilted, and the two ends of the curve refer to an end close to the exit surface 13 and an end away from the exit surface 13. The tilting is tilting away from the central axis of the incident hole 11, for example Figure 5 The two ends of the first curve in the middle longitudinal section of the middle side wall 111 are tilted upward, and the two ends of the second curve are tilted downward (both upward and downward are tilted upward). Figure 5 The directions in the figure are only for illustration purposes). That is, along the axial direction 15 of the lens 1, in the direction gradually approaching the exit surface 13, the aperture of the incident hole 11 first decreases and then increases. Figure 6 As shown, d1>d2, d2 <d3。

[0047] In an optional implementation manner, the heights of the two ends may be the same or different. Different side wall profiles may be used according to actual conditions to achieve a better light control effect.

[0048] like Figure 7 As shown in the figure, the principle of the patented lens is to control more light to be totally reflected on the reflective surface and then refracted out by changing the surface shape of the side wall of the lens entrance hole. The light refracted directly out of the middle of the lens has a short optical path and its light control ability is weaker than that of the reflective surface, so allocating more light to the reflective surface can achieve better optical effects.

[0049] Example 2

[0050] like Figure 8As shown, the difference between this embodiment and embodiment 1 is that the side wall surface of the incident hole in this embodiment is different from that in embodiment 1, and the side wall 111 in the longitudinal section of the lens 1 is two curved lines with one end tilted up, and the tilted end is the end away from the light source, and the aperture of the incident hole 11 at the tilted end is increased, for example Figure 8 The first curve of the middle longitudinal section of the middle side wall 111 is tilted upward at one end away from the light source, and the second curve is tilted downward at one end away from the light source (both upward and downward are tilted upward). Figure 8 The directions in the figure are only for schematic illustration). That is, along the direction close to the exit surface 13, the aperture of the incident hole 11 gradually increases.

[0051] The surface shape of the side wall of the incident hole in this embodiment can also control more light to be totally reflected on the reflection surface and then refracted out, thereby achieving a better optical effect.

[0052] Example 3

[0053] A lamp adopts the silicone lens 1 as described in any one of Embodiments 1 and 2.

[0054] 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 silicone lens (1), characterized in that: The lens (1) comprises an incident hole (11), wherein the incident hole (11) is used to place an LED light source; the incident hole (11) comprises a side wall (111) and a top wall (112), wherein the side wall (111) is two curved lines in a longitudinal section view in the lens (1); and the lens (1) is made of a silicone material.

2. A silicone lens according to claim 1, characterized in that: The side wall (111) is a special-shaped surface.

3. The silicone lens according to claim 1, characterized in that: The side wall (111) is two curved lines with warped ends in a longitudinal section in the lens (1); along the axial direction of the lens (1), the aperture of the incident hole (11) first decreases and then increases.

4. The silicone lens according to claim 1, characterized in that: The heights of the two ends are different.

5. The silicone lens according to claim 1, characterized in that: The side wall (111) in the lens (1) is in the form of two curved lines with one end tilted up in a longitudinal section, the tilted end being the end away from the light source, and the aperture of the incident hole (11) at the tilted end is increased.

6. The silicone lens according to claim 1, characterized in that: The side wall (111) is an annular curved surface and is symmetrically arranged along the axial direction of the lens (1).

7. A silicone lens according to any one of claims 1 to 6, characterized in that: The reflective surface (12) of the lens (1) is provided with a scale structure.

8. A silicone lens according to any one of claims 1 to 6, characterized in that: The exit surface (13) of the lens (1) comprises a microstructure surface (131).

9. A silicone lens according to any one of claims 1 to 6, characterized in that: The emission surface (13) of the lens (1) is a matte surface or a glossy surface.

10. A lamp, characterized in that: A silicone lens (1) as described in any one of claims 1 to 9 is used.

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