A reflective fresnel lens

Abstract

The utility model discloses a reflection type fresnel lens concretely relates to the technical field of fresnel lens, including the fresnel lens body, the fresnel lens body is equipped with the auxiliary spare for reinforcing the integrity, the auxiliary spare includes the assembly slot, the assembly slot is opened in the outside of the fresnel lens body, and the inside of assembly slot is equipped with the cooling spare for reinforcing the heat dissipation efficiency, the outside of cooling spare is equipped with a plurality of elastic blocks, and the outside of a plurality of elastic blocks is equipped with same buffer ring, the buffer ring is sleeved in the outside of the fresnel lens body. The utility model discloses the snap -on of elastic block and the snap -on groove, is convenient for with the buffer ring to be sleeved to the outside of the fresnel lens body, and the outside circle of the fresnel lens body is shielded and protected by buffer ring, avoids the damage of falling impact to the outside circle of the fresnel lens body, guarantees the integrity of the fresnel lens body, and ensures the use performance of the fresnel lens body.

Description

Technical Field

[0001] This utility model relates to the field of Fresnel lens technology, and more specifically to a reflective Fresnel lens. Background Technology

[0002] A Fresnel lens, also known as a threaded lens, is an optical element with concentric circular grooves. Its core design concept is to concentrate light to a focal point through a sawtooth groove structure. Made from materials such as polyolefins and glass, it is thin, lightweight, and has high light transmittance, effectively replacing traditional plano-convex lenses for focusing applications. Fresnel lenses were initially used in lighthouse lighting systems and were made from crystal. With the development of optical technology, modern Fresnel lenses have diversified into two main types: linear and circular. They are used as core components in stage lighting fixtures for reflective-transmitting systems and are often combined with plano-convex lenses to meet different lighting needs. Among them, the reflective Fresnel lens is an optical device that uses the principle of total internal reflection to achieve ultra-short focal length focusing. The reflective design employs a unique optical path structure: the light source, located on the center line of the lens, enters from the circular ring side. Due to the refractive index characteristics of the lens material, the light is refracted on the surface of the ring, undergoes total internal reflection within the lens's annular structure, and finally exits from the plane. The light propagation path follows a "Z-shaped" folding pattern.

[0003] As shown in the prior art published in CN208795865U, although this prior art uses a silver-plated reflective layer on the beveled edge of the reflective teeth under the transparent plastic plate to diffract the reflected light, thereby expanding the field of view and making the plane mirror function as a convex mirror, this prior art lacks a protective structure. If the lens is accidentally dropped to the ground, the edges and corners of the lens are prone to wear or even damage, which will affect the performance of the technical solution. Utility Model Content

[0004] To overcome the aforementioned deficiencies in the prior art, this utility model provides a reflective Fresnel lens. Through the engagement of the elastic block and the locking groove, a buffer ring is easily fitted onto the outside of the Fresnel lens body. The buffer ring protects the outer ring of the Fresnel lens body from falling impacts, preventing damage and ensuring the integrity and performance of the Fresnel lens body. This solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reflective Fresnel lens, comprising a Fresnel lens body, wherein the Fresnel lens body is provided with auxiliary components for enhancing integrity; The auxiliary component includes an assembly groove, which is located outside the Fresnel lens body. The assembly groove is equipped with a cooling component to enhance heat dissipation efficiency. Multiple elastic blocks are provided outside the cooling component, and the same buffer ring is provided outside the multiple elastic blocks. The buffer ring is sleeved on the outside of the Fresnel lens body, and the end of the elastic block away from the Fresnel lens body is fixed together with the buffer ring.

[0006] In a preferred embodiment, the cooling component includes a heat-conducting ring fitted inside the assembly groove. Multiple heat dissipation strips are installed on the outside of the heat-conducting ring, with one end of the heat dissipation strips extending to the outside of the buffer ring. The heat is absorbed by the Fresnel lens body through the heat-conducting ring, and then conducted to the outside by the heat dissipation strips, thereby ensuring the performance of the Fresnel lens body.

[0007] In a preferred embodiment, a heat dissipation hole is provided on one side of the buffer ring corresponding to the heat dissipation strip, and the end of the heat dissipation strip near the buffer ring extends into the heat dissipation hole. By setting the heat dissipation hole, the heat dissipation strip can be in contact with the outside, thereby improving the heat dissipation efficiency of the heat dissipation strip and avoiding heat accumulation that would affect the performance of the Fresnel lens body.

[0008] In a preferred embodiment, a locking groove is provided between two adjacent heat sinks, and the elastic block is provided inside the locking groove and between the two heat sinks. By setting the locking groove, the elastic block can be limited to ensure the locking stability of the elastic block, thereby ensuring the assembly stability of the buffer ring and preventing the buffer ring from becoming loose.

[0009] In a preferred embodiment, multiple elastic blocks and multiple heat dissipation strips are arranged in a ring array. The spaced distribution of multiple elastic blocks and multiple heat dissipation strips can limit the buffer ring in multiple directions, ensuring the stability of the buffer ring. At the same time, it can also dissipate heat from multiple directions on the Fresnel lens body, improving the heat dissipation efficiency of the Fresnel lens body.

[0010] In a preferred embodiment, the top and bottom of the buffer ring are provided with multiple air holes, which are arranged in a ring array and correspond vertically to the positions of the heat sink. By setting multiple air holes, the contact surface between the heat sink and the outside can be increased, thereby improving the heat dissipation efficiency of the heat sink and avoiding heat accumulation that could affect the performance of the Fresnel lens body.

[0011] The technical effects and advantages of this utility model are as follows: The engagement of the elastic block and the locking groove facilitates the fitting of the buffer ring onto the outside of the Fresnel lens body. The buffer ring protects the outer ring of the Fresnel lens body from falling impacts, thus ensuring the integrity of the Fresnel lens body and its performance. The Fresnel lens absorbs heat from the lens body through a heat-conducting ring, which then releases the heat through a heat dissipation strip. This process cools and dissipates the Fresnel lens body, ensuring its performance and preventing heat buildup that could affect its effectiveness. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the Fresnel lens body of this utility model; Figure 3 This is a front view of the buffer ring of this utility model; Figure 4 For the present utility model Figure 3 Enlarged view of section A in the middle; Figure 5 This is an exploded view of the heat-conducting ring of this utility model.

[0013] The attached figures are labeled as follows: 1. Fresnel lens body; 2. Assembly groove; 3. Elastic block; 4. Buffer ring; 5. Heat-conducting ring; 6. Heat sink; 7. Heat dissipation hole; 8. Engaging groove; 9. Air vent. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Refer to the instruction manual appendix Figure 1-5 This utility model provides a reflective Fresnel lens, including a Fresnel lens body 1. The Fresnel lens body 1 is provided with an auxiliary component for enhancing its integrity. The auxiliary component includes an assembly groove 2, which is opened on the outside of the Fresnel lens body 1. The assembly groove 2 is provided with a cooling component for enhancing heat dissipation efficiency inside. Multiple elastic blocks 3 are provided on the outside of the cooling component. Multiple elastic blocks 3 are provided with the same buffer ring 4. The buffer ring 4 is sleeved on the outside of the Fresnel lens body 1, and the end of the elastic block 3 away from the Fresnel lens body 1 is fixed together with the buffer ring 4.

[0016] When using the Fresnel lens body 1, in order to ensure its integrity during use, auxiliary parts need to be assembled to the outside of the Fresnel lens body 1. This can be achieved by engaging multiple elastic blocks 3 with the mounting groove 2, making it easy to fit the buffer ring 4 onto the outside of the Fresnel lens body 1. The elastic potential energy of the buffer ring 4 can shield and protect the outer ring of the Fresnel lens body 1, reducing the impact when the Fresnel lens body 1 falls, preventing excessive impact from damaging the outer ring of the Fresnel lens body 1, ensuring the integrity of the Fresnel lens body 1, and ensuring its performance.

[0017] Meanwhile, to prevent heat accumulation from affecting the performance of the Fresnel lens body 1, a cooling component is used to cool and dissipate heat from the Fresnel lens body 1. The cooling component includes a heat-conducting ring 5, which is fitted inside the assembly groove 2. Multiple heat dissipation strips 6 are installed on the outside of the heat-conducting ring 5, with one end of the heat strips away from the heat-conducting ring 5 extending to the outside of the buffer ring 4.

[0018] In this way, the heat can be absorbed by the heat-conducting ring 5, and then the heat can be transferred to the heat dissipation strip 6. Through the contact between the heat dissipation strip 6 and the outside air, the heat can be released and discharged. This can cool down the Fresnel lens body 1, ensure the performance of the Fresnel lens body 1, and avoid heat accumulation that would affect the performance of the Fresnel lens body 1.

[0019] To ensure the heat dissipation effect of the heat sink 6, a heat dissipation hole 7 is provided on one side of the buffer ring 4 corresponding to the heat sink 6, and the end of the heat sink 6 near the buffer ring 4 extends into the heat dissipation hole 7. This allows the heat sink 6 to extend to the outside of the buffer ring 4 through the heat dissipation hole 7, enabling it to contact the air. The airflow accelerates the heat dissipation performance of the heat sink 6, thereby improving its heat dissipation efficiency. Furthermore, multiple air holes 9 are provided at the top and bottom of the buffer ring 4, arranged in a circular array, with the air holes 9 corresponding vertically to the heat sink 6. This allows air to circulate through the air holes 9 at the top and bottom of the buffer ring 4, increasing the contact area between the heat sink 6 and the air, and enhancing its heat dissipation efficiency.

[0020] Meanwhile, to ensure the connection stability between the buffer ring 4 and the Fresnel lens body 1, a locking groove 8 is provided between two adjacent heat dissipation strips 6. The elastic block 3 is located inside the locking groove 8 and between the two heat dissipation strips 6. This locking mechanism between the elastic block 3 and the locking groove 8 limits the position of the buffer ring 4, ensuring the connection stability between the buffer ring 4 and the Fresnel lens body 1 and preventing the buffer ring 4 from loosening and falling off. Furthermore, since the multiple elastic blocks 3 and multiple heat dissipation strips 6 are arranged in a ring array, the locking stability of the elastic blocks 3 is effectively enhanced, and the heat dissipation efficiency of the Fresnel lens body 1 is also improved.

[0021] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reflective Fresnel lens, comprising a Fresnel lens body (1), characterized in that: The Fresnel lens body (1) is provided with auxiliary components to enhance its integrity; The auxiliary component includes an assembly groove (2), which is located outside the Fresnel lens body (1). The assembly groove (2) is provided with a cooling component to enhance heat dissipation efficiency. Multiple elastic blocks (3) are provided outside the cooling component. The multiple elastic blocks (3) are provided with the same buffer ring (4). The buffer ring (4) is sleeved on the outside of the Fresnel lens body (1). The end of the elastic block (3) away from the Fresnel lens body (1) is fixed together with the buffer ring (4).

2. A reflective Fresnel lens according to claim 1, characterized in that: The cooling component includes a heat-conducting ring (5), which is fitted inside the assembly groove (2). Multiple heat dissipation strips (6) are installed on the outside of the heat-conducting ring (5), and one end of the heat dissipation strip (6) away from the heat-conducting ring (5) extends to the outside of the buffer ring (4).

3. A reflective Fresnel lens according to claim 2, characterized in that: The buffer ring (4) has a heat dissipation hole (7) on one side corresponding to the heat dissipation strip (6), and the end of the heat dissipation strip (6) near the buffer ring (4) extends into the heat dissipation hole (7).

4. A reflective Fresnel lens according to claim 2, characterized in that: A locking groove (8) is provided between two adjacent heat dissipation strips (6), and the elastic block (3) is provided inside the locking groove (8) and between the two heat dissipation strips (6).

5. A reflective Fresnel lens according to claim 2, characterized in that: Multiple elastic blocks (3) and multiple heat dissipation strips (6) are arranged in a ring array.

6. A reflective Fresnel lens according to claim 2, characterized in that: The buffer ring (4) has multiple air holes (9) at its top and bottom. The multiple air holes (9) are arranged in a ring array, and the positions of the air holes (9) and the heat dissipation strips (6) are vertically corresponding.

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