Micro Slit Plate 20um Optical Precision Metal Slit Component
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Product parameters
Parameter | Specification |
Product Name | Optical Slit Plate / Slit Aperture Plate / Micro Slit Plate |
Material | Stainless Steel (SUS304 / SUS301), Nickel, Copper, Molybdenum (optional) |
Thickness | 0.02 mm – 0.50 mm |
Slit Width | 20 μm – 500 μm (custom available) |
Slit Tolerance | ±1 – ±5 μm |
Slit Type | Single Slit / Multi Slit / Parallel Slit / Custom Pattern |
Slit Length | 0.5 mm – 100 mm (custom) |
Manufacturing Process | Chemical Etching / Laser Cutting / Precision Machining |
Edge Condition | Burr-free / Smooth edge |
Surface Treatment | Polished / Matte / Black Coating (anti-reflection) |
Flatness | ≤ 0.01 – 0.05 mm |
Dimensional Tolerance | ±0.01 – ±0.02 mm |
Light Control | High precision light transmission and beam shaping |
Operating Temperature | -50°C to 300°C (material dependent) |
Corrosion Resistance | High (stainless steel / coating optional) |
Mounting Type | Through hole / Frame mount / Custom fixing |
Application Type | Optical Measurement / Laser Control / Detection Systems |
Customization | Slit width / spacing / shape / material / coating |
Product Description
Product Introduction:
This micro slit plate (20um) is a high precision optical slit plate manufactured from metal materials for fine optical control applications. The micro slit plate features ultra-fine slit structures, enabling precise light modulation and signal control. As a reliable metal slit plate, it is suitable for advanced optical and measurement systems.
Applications:
Micro optical systems, laser calibration devices, precision measurement instruments, optical sensors, scientific research equipment
Black Coating for Optical Slit Plates: Enhancing Anti-Reflection Performance
In high-precision optical systems, the quality of the light signal is paramount. While the primary function of a slit plate is to allow a specific beam of light to pass through, the metal surface surrounding that slit can inadvertently become a source of interference. Unwanted reflections from the metal surface can scatter into the optical path, creating "noise" that degrades image quality or measurement accuracy.
At our factory, we address this challenge through advanced surface engineering. By applying a specialized Black Oxide Coating to our precision components, we transform reflective metal surfaces into light-absorbing barriers. This article explores how surface treatment enhances the performance of an Anti-reflection Slit Plate and why it is a critical specification for high-end optical instruments.
The Problem: Stray Light and Signal Noise
When a laser beam or light source hits a standard stainless steel slit plate, the polished or semi-polished metal surface acts like a mirror. Even a small amount of reflection can cause significant issues:
- Stray Light: Scattered photons can bounce off the inner walls of the instrument housing and hit the detector, creating a "fog" or background noise.
- Reduced Contrast: In imaging systems, stray light reduces the contrast ratio, making it difficult to distinguish fine details.
- Signal-to-Noise Ratio (SNR): In spectroscopy, stray light limits the dynamic range of the instrument.
To achieve the highest fidelity in optical measurements, the surface surrounding the slit must be non-reflective. This is where a high-quality surface treatment becomes essential.
Our Solution: Advanced Blackening Technology
We understand that not all black coatings are created equal. Standard paints or organic coatings can degrade over time, peel, or release volatile organic compounds (VOCs) in vacuum environments.
Our Black Oxide Coating process is designed specifically for high-performance optical applications. We utilize a chemical conversion coating that alters the surface chemistry of the metal rather than simply painting over it.
Key Advantages of Our Process:
- Superior Adhesion: Because the black layer is chemically bonded to the metal substrate, it will not peel, flake, or chip, even under mechanical stress or thermal cycling.
- Low Outgassing: Unlike organic paints, our inorganic black oxide coating is ideal for vacuum and space applications where material outgassing is a concern.
- Uniformity: The chemical etching and coating process ensures that even the microscopic edges of the slit are treated, preventing edge reflections.
Spotlight: The 20 Micron Slit Plate
The importance of anti-reflection treatment is magnified when dealing with ultra-fine geometries. Consider our Micro Slit Plate 20um Optical
Precision Metal Slit Component.
With a slit width of only 20 microns, the margin for error is virtually non-existent.
- The Challenge: At this scale, the "walls" of the slit (the thickness of the metal) are very close to the light path. If these walls are reflective, they can act as a waveguide, trapping and scattering light within the slit itself.
- The Benefit: By applying an Anti-reflection Slit Plate treatment to this component, we ensure that any light hitting the edges is absorbed rather than reflected. This maximizes the "cleanliness" of the beam passing through the 20-micron aperture, which is critical for applications like laser beam profiling where edge definition must be razor-sharp.
Technical Comparison: Bare Metal vs. Black Coated
To visualize the impact of our surface treatment, consider the following optical properties:
Feature | Bare Stainless Steel | Black Oxide Coated |
|---|---|---|
Reflectivity | High (acts as a mirror) | Extremely Low (absorbs light) |
Stray Light | High risk of scattering | Minimal to none |
Durability | Hard surface, but reflective | Chemically bonded, abrasion-resistant |
Vacuum Safe | Yes | Yes (Inorganic coating) |
Best For | Structural components | Optical apertures, baffles, slit plates |
Applications Requiring Anti-Reflection
Our blackened slit plates are essential for industries where optical purity is non-negotiable:
- Spectroscopy: High-resolution spectrometers require dark environments to detect faint spectral lines.
- Laser Measurement: Beam profilers need to eliminate halo effects caused by edge reflection.
- Machine Vision: Industrial cameras use aperture plates to control depth of field; blackening prevents lens flare.
Conclusion
In the world of precision optics, controlling light means controlling every surface it touches. By integrating a high-performance Black Oxide Coating into our manufacturing process, we ensure that our slit plates do more than just define a beam—they enhance the entire optical system's performance by eliminating unwanted noise.
Whether you need a standard aperture or a complex Micro Slit Plate 20um component, our factory provides the surface finishing expertise to meet your strict optical requirements.
Ready to improve your optical system's signal-to-noise ratio?
Contact Luna via WhatsApp at 12132219094 to discuss blackening options and request a quote for your custom slit plates.
Questions and Answers
Frequently Asked Questions (FAQ)
Q: Does the black coating affect the slit width dimensions?
A: Our coating process is extremely thin and controlled. We account for the coating thickness during the manufacturing design phase to ensure the final aperture size remains within your specified tolerance.
Q: Is the black coating durable?
A: Yes. Unlike spray paints that can scratch off, our black oxide coating is a conversion layer integrated into the metal surface. It offers excellent durability and abrasion resistance.
Q: Can you apply this coating to other materials besides stainless steel?
A: While stainless steel is the most common substrate for our Anti-reflection Slit Plate products, we can also apply similar light-absorbing treatments to copper and other alloys depending on the project requirements.
Q: Is this coating suitable for high-power laser applications?
A: Yes. Because it is an inorganic coating, it has a higher damage threshold than organic black paints, making it suitable for use in various laser systems.
Factory Description
We have a full set of etching production equipment and mature processing technology. We can manufacture products in any shape with mesh sizes as small as 0.1mm, according to your requirements.
Our Advantage
Factory Direct Shipping
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Experienced Design and Manufacturing Team
We work closely with customers from the design phase to help avoid potential product flaws, ensuring both the functionality and design meet expectations.
Excellent Supply Chain Management
We can quickly adjust production schedules to meet your urgent deadlines, whether it's for large bulk orders or smaller rush orders.
OEM & ODM Support
We offer the option to print your logo or other customizations.
Strict Quality Control
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Certificate
商标6类
9001
质量认证
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Shenzhen Nkeyto Precision Hardware Co., Ltd. is a factory specializing in precision hardware processing, committed to providing customers with high-quality products and services.We look forward to working with you.
Contact Us
E-mail: luna@nkeyto.com
Tel: +1 213-221-9094
Add: 13th Building, 202, Dawangshan Second Industrial Zone, Dawangshan Community, Shajing Street, Bao'an District, Shenzhen, Guangdong Province
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