Lens holder
By combining the base and screw cap with a glue-free elastic wrapping tape, the problem of damage to Fresnel lenses in traditional fixing methods is solved, achieving the effect of simplified installation and improved efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TRW AUTOMOTIVE COMPONENTS SUZHOU
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-29
AI Technical Summary
Existing Fresnel lenses are easily damaged during traditional clamping and bonding fixation, and the operation is complicated.
The system uses a base and a rotating cap, along with a non-adhesive elastic wrapping tape to position the lens. The installation method, which involves plugging and rotating, avoids damage to the lens surface and simplifies operation.
It effectively avoids damage to the lens surface, simplifies the installation and disassembly process, improves installation efficiency, and adapts to irregularly shaped lenses. The structure is simple and reliable.
Smart Images
Figure CN224303913U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of lens fixing equipment, specifically a lens fixator. Background Technology
[0002] Fresnel lenses are typically thin sheets injection-pressed from polyolefin material. One side of the lens surface is smooth, while the other side is engraved with concentric circles of increasing size. Because using Fresnel lenses to project light degrades image quality, they are generally used in applications where image quality requirements are not stringent or where conventional lenses cannot be used, such as lens-type projectors, rear-projection televisions, and portable magnifying glasses. They are also used in traffic lights and photovoltaic power generation. However, existing Fresnel lenses are prone to damage when using traditional clamping and adhesive fixing methods due to their material and size limitations. Utility Model Content
[0003] The purpose of this application is to address the shortcomings of existing technologies by using a base and a rotating cap, along with a non-adhesive elastic wrapping tape for lens installation. This enables wrapping positioning of the lens edge and solves the problem of how to avoid damage to the lens surface caused by the fixing clamp.
[0004] To achieve the above objectives, the technical solution adopted in this application is:
[0005] A lens holder includes a base and a cap rotatably mounted on the base. Both the base and the cap have a through hole at their center for light transmission. At least two sets of fixing rods and sliding rods are evenly distributed around the outside of the through hole. The fixing rods and sliding rods on the base correspond to the sliding rods and fixing rods on the cap. A non-adhesive elastic wrapping tape is fitted onto the corresponding fixing rods and sliding rods. The non-adhesive elastic wrapping tape is used to wrap and fix the lens located between the cap and the base. The distance between the fixing rods and sliding rods is adjusted by the number of rotations of the cap on the base.
[0006] Preferably, the upper surface of the base is provided with an inner retaining ring and an outer retaining ring concentric with the through hole.
[0007] Preferably, the outer side wall of the inner retaining ring is provided with protruding teeth.
[0008] Preferably, the lower surface of the screw cap is provided with a limiting ring concentric with the through hole, and the inner sidewall of the limiting ring is provided with an inner protruding tooth that matches the outer protruding tooth.
[0009] Preferably, both the internal and external protruding teeth are right-angled trapezoidal structures.
[0010] Preferably, the planes containing the right-angled sides of the internal and external protruding teeth abut each other during actual use.
[0011] Preferably, the outer diameter of the limiting retaining ring is smaller than the inner diameter of the outer retaining ring, and the diameter of the outer retaining ring is smaller than the outer diameter of the screw cap.
[0012] Preferably, both the base and the cap are provided with guide rails for sliding installation of the slide rod.
[0013] Preferably, the number of guide rails is the same as the number of slide bars.
[0014] Preferably, two adjacent guide rails are connected, and the bottom ends of two adjacent slide rods are connected by an arc-shaped rod.
[0015] Compared with the prior art, this application has the following beneficial effects:
[0016] This application utilizes a base and a rotating cap, along with a glue-free elastic wrapping tape for lens installation. This enables wrapping positioning of the lens edge, effectively avoiding damage to the lens surface caused by existing fixing clamps. Furthermore, the plug-in and rotation-driven installation method facilitates lens installation and removal, effectively reducing operational difficulty and improving installation efficiency. The structure is simple, practical, and reliable, and it also improves the adaptability to irregularly shaped lenses to a certain extent, demonstrating high adaptability. Attached Figure Description
[0017] Figure 1 This is a front structural diagram of this application.
[0018] Figure 2 This is a schematic diagram of the bottom structure of the application.
[0019] Figure 3 This is a side view of this application.
[0020] Figure 4 This is a schematic diagram of the screw cap structure in this application.
[0021] Figure 5 This is a structural schematic diagram of the base in this application.
[0022] Figure 6 This is a schematic diagram of the structure of the adhesive-free elastic winding tape in this application.
[0023] The components are: 1. screw cap; 2. inner retaining ring; 3. non-adhesive elastic wrapping tape; 4. outer retaining ring; 5. base; 6. limit retaining ring; 7. slide bar; 8. fixing rod; 9. inner protruding tooth; 10. guide rail; 11. outer protruding tooth. Detailed Implementation
[0024] like Figure 1-6As shown, a lens holder includes a base 5 and a cap 1 rotatably mounted on the base 5. Both the base 5 and the cap 1 have through holes at their centers for light transmission. The lens is located between the base 5 and the cap 1. The base 5 and cap 1 provide initial protection for the lens. It is important to note that the size of the through hole should not exceed the size of the lens. When the lens is irregularly shaped or small, manual positioning of the lens is required before rotating the cap 1 to secure it. The base 5 can be rectangular, triangular, or circular, depending on the installation requirements. Secured by the base 5 and cap 1 before installation reduces the complexity of lens installation and improves installation efficiency.
[0025] As a preferred method, such as Figure 4-6 As shown, the upper surface of the base 5 is provided with an inner retaining ring 2 and an outer retaining ring 4 concentric with the through hole, and the outer side wall of the inner retaining ring 2 is provided with an outward protruding tooth 11; the lower surface of the cap 1 is provided with a limiting retaining ring 6 concentric with the through hole, and the inner side wall of the limiting retaining ring 6 is provided with an inner protruding tooth 9 that matches the outward protruding tooth 11; wherein, both the inner protruding tooth 9 and the outer protruding tooth 11 are right-angled trapezoidal structures, and the planes containing the right-angled sides of the inner protruding tooth 9 and the outer protruding tooth 11 abut against each other in actual use, so that the cap 1 can only rotate in one direction in actual use, thereby preventing the non-adhesive elastic winding tape 3 from loosening. It should be noted that the cap 1, the limiting retaining ring 6, and the outward protruding tooth 11 are all made of a hard plastic or alloy material with a certain degree of elasticity to prevent the cap 1 from being unable to rotate.
[0026] As a preferred method, the outer diameter of the limiting retaining ring 6 is smaller than the inner diameter of the outer retaining ring 4, and the diameter of the outer retaining ring 4 is smaller than the outer diameter of the cap 1. This facilitates the insertion, installation, and removal of the cap 1, and also makes it easier to install and transport the base 5 and the cap 1 together. The cooperation of the inner protrusion 9 and the outer protrusion 11 allows the cap 1 to be directly inserted into the base 5, while also enabling unidirectional rotation. By adopting the insertion and rotation-driven installation method, the installation and removal of the lens are facilitated, effectively improving installation efficiency.
[0027] As a preferred method, at least two sets of fixing rods 8 and sliding rods 7 are evenly distributed on the outer sides of the through holes on the base 5 and the cap 1. The fixing rods 8 and sliding rods 7 on the base 5 correspond to the sliding rods 7 and fixing rods 8 on the cap 1, respectively. This allows the adhesive-free elastic wrapping tape 3 to be easily wrapped around the lens when the cap 1 is rotated, effectively avoiding damage to the lens surface caused by existing fixing clamps. At the same time, the evenly distributed fixing rods 8 and sliding rods 7 ensure that the lens is always in the center position, effectively preventing the lens from shifting. It should be noted that the maximum stroke of the adhesive-free elastic wrapping tape 3 must not exceed the distance between the fixing rods 8 and sliding rods 7 in the same group. In addition, the adhesive-free elastic wrapping tape 3 needs to be inspected and replaced regularly to avoid lens damage caused by unstable lens wrapping.
[0028] As a preferred method, the adhesive-free elastic wrapping tape 3 is fitted onto the corresponding fixed rod 8 and sliding rod 7. The sum of the fixed rod 8 and sliding rod 7 must be less than or equal to the height of both ends of the adhesive-free elastic wrapping tape 3. Thus, when the adhesive-free elastic wrapping tape 3 is inserted into the fixed rod 8 of the base 5 and the sliding rod 7 on the cap 1, or the sliding rod 7 of the base 5 and the fixed rod 8 on the cap 1, it can effectively ensure that the adhesive-free elastic wrapping tape 3 is between the cap 1 and the base 5. At the same time, it can realize the relative displacement between the fixed rod 8 and the sliding rod 7 in the same group. The distance between the fixed rod 8 and the sliding rod 7 is adjusted by the number of rotations of the cap 1 on the base 5.
[0029] As a preferred method, both the base 5 and the cap 1 are provided with guide rails 10 for sliding installation of the slide rods 7. The number of guide rails 10 is the same as the number of slide rods 7, which facilitates the fixed installation of the fixing rod 8 on the base 5 and the cap 1. At the same time, two adjacent guide rails 10 are connected, and the bottom ends of two adjacent slide rods 7 are connected by an arc-shaped rod. The connected guide rails 10 facilitate the placement and positioning of the arc-shaped rod and prevent the slide rods 7 from detaching from the guide rails. Furthermore, the presence of the arc-shaped rod can maintain the distance between two adjacent slide rods 7 and between the slide rods 7 and the fixing rod 8, avoiding the problem that multiple adhesive-free elastic wrapping tapes 3 cannot be unfolded simultaneously due to the different positions of the slide rods 7 when the cap 1 and the base 5 are installed, thus preventing damage to the lens.
Claims
1. A lens fixator, characterized in that, The system includes a base (5) and a rotatable cap (1) mounted on the base (5). Both the base (5) and the cap (1) have through holes at their centers for light to pass through. At least two sets of fixing rods (8) and sliding rods (7) are evenly distributed on the outer side of the through holes. The fixing rods (8) and sliding rods (7) on the base (5) correspond to the sliding rods (7) and fixing rods (8) on the cap (1), respectively. A non-adhesive elastic wrapping tape (3) is sleeved on the corresponding fixing rods (8) and sliding rods (7). The non-adhesive elastic wrapping tape (3) is used to wrap and fix the lens located between the cap (1) and the base (5). The distance between the fixing rods (8) and sliding rods (7) is adjusted by the number of rotations of the cap (1) on the base (5).
2. The lens fixator according to claim 1, characterized in that: The upper surface of the base (5) is provided with an inner retaining ring (2) and an outer retaining ring (4) concentric with the through hole.
3. A lens fixator according to claim 2, characterized in that: The inner retaining ring (2) has an external protruding tooth (11) on its outer side wall, and the lower surface of the screw cap (1) has a limiting retaining ring (6) concentric with the through hole. The inner side wall of the limiting retaining ring (6) has an internal protruding tooth (9) that matches the external protruding tooth (11).
4. A lens fixator according to claim 3, characterized in that: The lower surface of the cap (1) is provided with a limiting ring (6) concentric with the through hole, and the inner protruding tooth (9) is provided on the inner side wall of the limiting ring (6).
5. A lens fixator according to claim 4, characterized in that: Both the inner protruding tooth (9) and the outer protruding tooth (11) are right-angled trapezoidal structures.
6. A lens fixator according to claim 5, characterized in that: The planes containing the right-angled sides of the inner protruding tooth (9) and the outer protruding tooth (11) abut each other during actual use.
7. A lens fixator according to claim 4, characterized in that: The outer diameter of the limiting retaining ring (6) is smaller than the inner diameter of the outer retaining ring (4), and the diameter of the outer retaining ring (4) is smaller than the outer diameter of the screw cap (1).
8. A lens fixator according to claim 1, characterized in that: Both the base (5) and the cap (1) are provided with guide rails (10) for sliding installation of the slide rod (7).
9. A lens fixator according to claim 8, characterized in that: The number of guide rails (10) is the same as the number of slide bars (7).
10. A lens fixator according to claim 9, characterized in that: The two adjacent guide rails (10) are connected, and the bottom ends of the two adjacent slide rods (7) are connected by an arc rod.