Gasket structure capable of eliminating real-shot stray light

Abstract

The invention discloses a gasket structure capable of eliminating real-shot stray light, which comprises the following steps of: S1, designing a chamfering structure, namely, accurately setting the thickness of an ultra-thin gasket to be 0.022 / 0.033 mm, manufacturing the chamfering structure in an inner hole, and performing rigorous optical simulation and experimental optimization; s2, material selection and surface treatment are coordinated, material screening focuses on the characteristics of low reflectivity and high optical stability, and optical-grade polycarbonate has good optical transparency, low refractive index and excellent mechanical performance. The light propagation path is changed through unique design, and the influence of stray light on imaging is reduced to the maximum extent. By effectively eliminating the stray light, the image contrast of the imaging system is improved, the definition is obviously improved, more image details can be clearly presented, and the application scene requirement harsh for the imaging quality is met. The reduction of stray light interference helps to reduce the noise level of an optical system, improves the stability and reliability of the system, reduces the equipment fault and maintenance frequency caused by the stray light problem, and reduces the use cost.

Description

Technical Field

[0001] The invention relates to the field of optical technology, and in particular to a gasket structure capable of eliminating stray light in real shooting. Background Art

[0002] In the process of optical imaging, the problem of stray light seriously affects the image quality. Traditional gaskets are insufficient in preventing stray light interference and cannot effectively control the reflection and scattering path of light in the lens, causing stray light to enter the imaging area, resulting in reduced image contrast, reduced clarity, and frequent problems such as blurred details. Especially in areas with high requirements for imaging quality, such as high-precision microscopes, high-end photographic equipment, astronomical telescopes, etc., stray light interference has become one of the key factors restricting technological development. Therefore, it is of great practical significance to develop a gasket structure that can effectively eliminate stray light in real shots. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a gasket structure that can eliminate stray light in real shooting, and to change the light propagation path through a unique design, so as to minimize the influence of stray light on imaging, thereby significantly improving the quality and clarity of optical imaging. By effectively eliminating stray light, the image contrast of the imaging system is improved, the clarity is significantly improved, and more image details can be clearly presented, meeting the needs of application scenarios with strict requirements on imaging quality.

[0004] Reducing stray light interference helps to lower the noise level of the optical system, improve the stability and reliability of the system, extend the service life of optical equipment, reduce the number of equipment failures and repairs caused by stray light problems, and reduce the cost of use.

[0005] The present invention also provides a gasket structure that can eliminate stray light in actual shooting, including: S1. Chamfered structure design. The thickness of the extremely thin gasket is precisely set to 0.022 / 0.033mm, and a chamfered structure is made on the inner hole. After rigorous optical simulation and experimental optimization, it is determined that the chamfer angle range is 45° as the preferred value. This angle design can efficiently guide light to reflect along a specific trajectory, so that it can cleverly avoid the sensitive area of ​​lens imaging; S2. Material selection and surface treatment are coordinated. Material screening focuses on low reflectivity and high optical stability. Optical-grade polycarbonate has good optical transparency and low refractive index, as well as excellent mechanical properties. Its internal uniform microstructure can effectively reduce light scattering, laying a solid foundation for stray light prevention and control.

[0006] According to the present invention, a gasket structure capable of eliminating stray light in actual shooting is provided. The surface treatment of the material integrates nano-level polishing and multi-layer anti-reflection coating processes. Nano-level polishing is performed with the aid of chemical mechanical polishing equipment and fine grinding with a special polishing liquid to achieve an extreme surface roughness of Ra0.008μm, thereby greatly reducing the source of light scattering.

[0007] According to a gasket structure capable of eliminating stray light in actual shooting provided by the present invention, the chamfer structure is designed to strictly regulate the chamfer size accuracy to be controlled within plus or minus 0.01 mm, thereby ensuring the consistency and stability of light reflection and reducing the probability of stray light generation from the source end.

[0008] According to a gasket structure capable of eliminating stray light in real shooting provided by the present invention, the surface of the material is treated by an anti-reflection coating using a multilayer film structure in which high and low refractive index materials are alternately deposited.

[0009] According to a gasket structure capable of eliminating stray light in actual shooting provided by the present invention, the surface treatment of the material is carried out by atomic layer deposition technology to precisely control the thickness of each layer in the range of 50-150nm and the deposition rate in the range of 0.1-0.3nm / s, thereby ensuring that the reflectivity in the visible spectrum band of 400-700nm is less than 1%, significantly suppressing the surface reflection of light and enhancing the stray light elimination efficiency.

[0010] According to a gasket structure capable of eliminating stray light in actual shooting provided by the present invention, the chamfered structure is designed to round the chamfered edges, and the rounding radius is set at 0.02mm-0.05mm, so as to further smooth the transition of light, avoid light scattering caused by sharp edges, and enhance the elimination of stray light.

[0011] Compared with the prior art, the gasket structure of the present invention can eliminate stray light in real shooting. Through a unique design, it changes the light propagation path, minimizes the influence of stray light on imaging, and thus significantly improves the quality and clarity of optical imaging. By effectively eliminating stray light, the image contrast of the imaging system is improved, the clarity is significantly improved, and more image details can be clearly presented, meeting the needs of application scenarios with strict requirements on imaging quality.

[0012] Compared with the prior art, the gasket structure of the present invention can eliminate stray light in actual shooting, reduce stray light interference, help reduce the noise level of the optical system, improve the stability and reliability of the system, extend the service life of the optical equipment, reduce equipment failures and maintenance times caused by stray light problems, and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is an overall structural diagram of a gasket structure capable of eliminating stray light in real shooting according to the present invention;

[0015] Figure 2 A cross-sectional structural diagram of a gasket capable of eliminating stray light in real-life photography according to the present invention;

[0016] Figure 3This is an enlarged view of the chamfered portion of the inner hole of a gasket that can eliminate stray light in real photography according to the present invention. DETAILED DESCRIPTION

[0017] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0018] Embodiment 1:

[0019] Reference Figure 1-3 , an embodiment of the present invention provides a gasket structure capable of eliminating stray light in real shooting, comprising:

[0020] Material preparation and molding: Accurately weigh organic monomers, inorganic precursors, and appropriate amounts of initiators and catalysts in a specific proportion, and fully mix and stir under the protection of inert gas to form a uniform reaction system. The system is injected into the precision mold cavity, and hot pressing molding reaction is carried out under the conditions of 200°C temperature range and 80MPa pressure. The heat preservation and pressure holding time is 3 hours to prepare the gasket blank. After molding, high-precision CNC machining equipment is used to perform turning, drilling and other processing operations on the blank, and the dimensional tolerance is strictly controlled to ensure that the outer diameter tolerance of the gasket is within plus or minus 0.02mm, the inner diameter tolerance is within plus or minus 0.005mm, and the thickness tolerance is within plus or minus 0.003mm.

[0021] Implementation of surface treatment process: First, place the processed gasket in a plasma cleaning device and clean it for 15 minutes at 150W power and 30sccm oxygen flow to thoroughly remove surface oil and impurities. Then, the coating is deposited. When PECVD is used to prepare the silicon dioxide seed layer, silane and oxygen are used as the reaction gas, with a flow ratio of 1:5, the RF power is set at 300W, and the deposition temperature is 350°C; during the IAD deposition of tantalum pentoxide and silicon dioxide multilayer anti-reflection film system, the ion beam energy is controlled in the range of 500eV and the beam density is 80μA / cm 2 , ensuring that each layer of film is uniform and dense; before spin coating the nano-metal oxide doped organic polymer light absorbing coating, the coating material is fully dispersed in the organic solvent, spin coated at 1200rpm for 60 seconds, and then at 365nm wavelength, 80mW / cm 2 Cure under strong UV light for 5 minutes to ensure that the coating is completely cured and the performance is stable.

[0022] Assembly and debugging: In a Class 10,000 dust-free workshop environment, the gasket is installed to the corresponding position of the optical imaging system with the help of high-precision positioning tooling and optical alignment instruments. During the installation process, the axial position deviation of the gasket is monitored in real time and controlled within plus or minus 0.003mm, the radial position deviation is within plus or minus 0.002mm, and the installation angle deviation is within plus or minus 0.05°. After the initial assembly, a professional optical test platform and a standard resolution test card are used for imaging testing, and the image contrast, clarity, signal-to-noise ratio and other parameters are quantitatively evaluated through analysis software. Based on the test results, the fine-tuning mechanism is used to fine-tune the position and angle of the gasket, with an adjustment accuracy of 0.001mm and 0.01° respectively. After multiple iterations of optimization, the imaging quality is optimized to maximize system performance.

[0023] Embodiment 2:

[0024] Reference Figure 1-3 , an embodiment of the present invention provides a gasket structure capable of eliminating stray light in real shooting, comprising:

[0025] Material preparation and molding: The designed gasket 3D model is imported into a professional light-curing 3D printer, and an optical-grade photosensitive resin material is selected, which has fast curing characteristics under a specific wavelength of 405nm ultraviolet light and excellent optical properties after curing. The printing layer thickness is set to 0.02mm, the printing speed is 25mm / s, and the exposure time is 10s. During the printing process, the temperature of the printing platform is stabilized at 35℃ through a precision temperature control system to ensure uniform and stable curing of the material. After printing, the print is post-cured and heated at 80℃ for 1.5 hours to further improve the mechanical strength and optical stability of the material. Subsequently, the surface of the print is trimmed using precision grinding equipment to make its surface roughness reach Ra0.005μm or less, ensuring that the dimensional accuracy meets the design requirements, that is, the outer diameter tolerance is within plus or minus 0.02mm, the inner diameter tolerance is within plus or minus 0.005mm, and the thickness tolerance is within plus or minus 0.003mm.

[0026] Surface treatment process implementation: Similar to Example 1, plasma cleaning is performed first, with parameters of 150W power, 30sccm oxygen flow, and 18 minutes of cleaning time. In terms of coating deposition, when PECVD is used to prepare the silicon dioxide seed layer, the optimized reaction gas flow ratio is 1:4-1:6, the RF power is adjusted to 300W, and the deposition temperature is 350°C; when IAD is used to deposit a multilayer anti-reflection film system, the ion beam energy is controlled at 500eV and the beam current density is 70μA / cm 2 When spin coating the light absorbing coating, the rotation speed was increased to 1500 rpm, the spin coating time was 400 seconds, and the light intensity during UV curing was increased to 90 mW / cm 2 , curing time is 5 minutes, ensuring that each coating has excellent performance and is firmly bonded to the gasket base.

[0027] Assembly and debugging: The assembly environment is maintained under Class 1000 dust-free conditions, and high-precision automated assembly equipment is used to accurately install the gasket to the optical imaging system. During the assembly process, laser interferometry measurement technology is used to monitor the gasket position and angle deviation in real time to ensure that the axial position deviation is within plus or minus 0.002mm, the radial position deviation is within plus or minus 0.001mm, and the installation angle deviation is within plus or minus 0.03°. The imaging test uses a high-resolution, multi-spectral light source test platform and professional image analysis software to conduct a comprehensive evaluation of image quality. Based on the evaluation data, the gasket position and angle are automatically adjusted through the intelligent control system with an adjustment accuracy of up to 0.0005mm and 0.005°. After multiple optimization iterations, the optimal performance configuration of the imaging system is achieved to ensure that high-quality images can be stably output under different working conditions.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A gasket structure capable of eliminating stray light in real-life shooting, characterized in that: include: S1. Chamfer structure design. The thickness of the ultra-thin gasket is precisely set to 0.022 / 0.033mm. The inner hole is chamfered. After rigorous optical simulation and experimental optimization, it is determined that the chamfer angle range is 45° as the optimal value. This angle design can efficiently guide the light to reflect along a specific trajectory, so that it can cleverly avoid the sensitive imaging area of ​​the lens; S2. Material selection and surface treatment are coordinated. Material screening focuses on low reflectivity and high optical stability. Optical grade polycarbonate has good optical transparency, low refractive index, and excellent mechanical properties. Its internal uniform microstructure can effectively reduce light scattering, laying a solid foundation for stray light prevention and control.

2. A gasket structure capable of eliminating stray light in real shooting according to claim 1, characterized in that: The surface treatment of the material integrates nano-level polishing and multi-layer anti-reflective coating technology. Through nano-level polishing with the help of chemical mechanical polishing equipment and fine grinding with special polishing liquid, the surface roughness reaches the ultimate level of Ra0.008μm, which greatly reduces the source of light scattering.

3. A gasket structure capable of eliminating stray light in real shooting according to claim 1, characterized in that: The chamfer structure design strictly regulates the chamfer size accuracy to be controlled within plus or minus 0.01 mm, ensuring the consistency and stability of light reflection and reducing the probability of stray light generation from the source end.

4. The gasket structure capable of eliminating stray light in real shooting according to claim 1, characterized in that: The surface treatment of the material adopts a multi-layer film structure in which high and low refractive index materials are alternately deposited through an anti-reflection coating.

5. The gasket structure capable of eliminating stray light in real shooting according to claim 1, characterized in that: The surface treatment of the material uses atomic layer deposition technology to precisely control the thickness of each layer in the range of 50-150nm and the deposition rate in the range of 0.1-0.3nm / s, ensuring that the reflectivity in the visible spectrum band of 400-700nm is less than 1%, significantly suppressing the surface reflection of light and enhancing the stray light elimination efficiency.

6. The gasket structure capable of eliminating stray light in real shooting according to claim 1, characterized in that: The chamfered structure is designed to round the chamfered edge, and the rounding radius is set at 0.02mm-0.05mm, which further smoothes the transition of light, avoids light scattering caused by sharp edges, and enhances stray light elimination.

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