Precision Stainless Steel Diaphragm Plate Custom Black Aperture Component
Category:
Key Words:
Product parameters
Parameter | Specification / Range | Notes |
Material | Stainless Steel (304 / 316 / 301), Brass, Copper | SUS304 most common |
Thickness | 0.02 – 1.0 mm | Etching optimal: 0.02–0.5 mm |
Tolerance | ±0.005 – ±0.02 mm | Depends on thickness |
Aperture Size | ≥0.01 mm | Custom design |
Minimum Feature Size | ≥0.015 mm | Based on material |
Shape | Round, ring, slot, custom profile | OEM supported |
Etching Accuracy | ±10% of thickness | Industry standard |
Edge Condition | Burr-free, smooth | Key advantage |
Surface Finish | Matte / clean / polished | Optional |
Surface Treatment | Black coating, passivation, electro-polishing | Anti-reflection optional |
Flatness | ≤0.05 mm | Depends on size |
Max Size | Up to 600 × 1000 mm | Larger via laser |
Process | Chemical etching / Laser cutting / CNC | Combined available |
Customization | Full OEM support | Based on drawing/sample |
Product Description
Product Introduction
This precision stainless steel plate is a custom black diaphragm plate designed for aperture control and light blocking in compact systems. The aperture plate offers high dimensional accuracy, smooth edges, and consistent quality. As a reliable precision plate, it is suitable for both optical and industrial applications.
Applications
Optical diaphragm systems, light blocking components, sensor devices, imaging systems, precision instruments, OEM equipment



Compact System Components: High-Accuracy Diaphragm Plates for Light Blocking
The relentless drive toward miniaturization in optical engineering presents a unique set of challenges. As devices shrink, the internal components must not only perform with high precision but also fit within increasingly constrained volumes without compromising reliability. In compact optical systems, such as wearable medical devices, micro-cameras, and handheld sensors, every micron counts.
At our factory, we recognize that standard components often fail to meet the rigorous demands of these miniature assemblies. Our Precision Stainless Steel Diaphragm Plate is engineered specifically to bridge this gap, offering a high-accuracy solution for light blocking and aperture control in space-constrained applications.
️ Precision Control in Miniature Formats
The diaphragm is the "heartbeat" of an optical system, regulating the amount of light that reaches the sensor. In a custom black aperture designed for compact systems, the margin for error is virtually non-existent.
Our diaphragm plate serves a critical dual function:
- Light Regulation: It precisely defines the light path, ensuring that only the necessary photons reach the imaging sensor.
- Space Optimization: Unlike bulky mechanical iris systems, our fixed or simplified diaphragm plates provide a static, highly reliable aperture that maximizes internal volume for other components like batteries or processors.
We understand that in a compact system, a diaphragm plate cannot just be a "hole in a sheet." It must be a precisely calculated interface that aligns perfectly with the optical axis to prevent vignetting or light leakage.
The Synergy of Blackening and Precision
To function effectively in a tight space, a component must manage light efficiently. Stray light bouncing off the edges of a diaphragm can cause "veiling glare," which washes out images and reduces contrast.
We address this by combining high-precision manufacturing with advanced surface treatment:
- Optical Blackening: Our plates undergo a rigorous blackening process. This isn't just paint; it is a chemical conversion coating that creates a light-absorbing surface. This ensures that the custom black aperture acts as a light trap, absorbing stray photons rather than reflecting them.
- Dimensional Stability: We use high-grade stainless steel to ensure that the plate remains flat and dimensionally stable, even if the device heats up during operation. This stability is crucial for maintaining focus and alignment in compact optical systems.
Why Smooth Edge Metal Parts Matter
In macro-scale manufacturing, a rough edge might be a cosmetic issue. In micro-optics, it is a functional failure. A burr or a rough edge on a diaphragm plate can diffract light, creating artifacts in the image, or worse, shed microscopic particles that can settle on the lens or sensor.
Our manufacturing process focuses heavily on producing smooth edge metal parts.
- Chemical Etching Advantage: Unlike mechanical punching, which shears metal and leaves burrs, our chemical etching process dissolves the metal to create the aperture. This results in edges that are inherently smooth and burr-free.
- Cleanliness: For medical and high-end imaging applications, cleanliness is paramount. Our process ensures that the diaphragm plate is free from oils, particulates, or metal shavings that could contaminate a sterile or sealed optical environment.
Edge Quality Comparison
Manufacturing Method | Edge Condition | Risk to Optical System |
|---|---|---|
Mechanical Punching | Burrs, sharp edges | High (Light diffraction, particle shedding) |
Laser Cutting | Heat Affected Zone (HAZ) | Medium (Potential warping, micro-slag) |
Chemical Etching (Ours) | Smooth, Burr-free | None (Ideal for high-contrast imaging) |
️ Reliable Solutions for OEM Equipment
As an OEM partner, we understand that the diaphragm plate is often a small but vital piece of a larger puzzle. Whether you are manufacturing endoscopes, machine vision cameras, or laser sensors, you need a component that integrates seamlessly into your assembly line.
Our Precision Stainless Steel Diaphragm Plate is designed to be a "drop-in" solution for compact optical systems.
- Consistency: Batch-to-batch consistency ensures that your assembly robots can pick and place these parts without alignment issues.
- Customization: We can tailor the thickness and aperture shape to match your specific light-blocking requirements, ensuring that your OEM device meets its performance specs every time.
Precision for the Smallest Details
In the world of micro-optics, precision is not optional. Our Precision Stainless Steel Diaphragm Plate offers the perfect balance of light control, cleanliness, and compact design.
Contact us today to discuss your requirements for compact optical components:
- Contact Person: Luna
- WhatsApp: 12132219094
Questions and Answers
Frequently Asked Questions (FAQ)
Here are answers to common questions regarding our diaphragm plates:
Why is a black finish important for a diaphragm plate?
A black finish absorbs stray light that hits the surface of the plate. Without it, light would reflect off the metal and scatter inside the lens barrel, significantly reducing image contrast and clarity.
Can you manufacture diaphragms for extremely small devices?
Yes. Our chemical etching process is ideal for compact optical systems. We can produce parts with very small outer dimensions and micro-apertures while maintaining high structural integrity.
How do you ensure the edges are smooth?
We primarily use chemical etching, which creates smooth edge metal parts by dissolving the metal rather than cutting it. This eliminates burrs and ensures the part is safe for sensitive optical environments.
What materials are available for these plates?
While stainless steel is the standard for its durability and corrosion resistance, we can also process other alloys depending on the specific thermal or magnetic requirements of your application.
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
Related Products