Description
Introducing China & South Optical Crystal’s Sapphire Stepped Windows – precision optical components engineered for demanding applications. Our stepped windows are meticulously crafted from high-quality single-crystal sapphire, ensuring excellent hardness, thermal stability, and broad optical transmission from UV to IR.
CSOC’s Sapphire Stepped Windows are renowned for high surface flatness (up to λ/10) and superior surface quality (up to 10-5 scratch-dig), with tight overall dimension tolerances of ±0.01 mm and wedge angle tolerances down to 20 arc seconds, providing exceptional precision and performance.
Ideal for laser systems, vacuum chambers, sensors, scientific instruments, and other high-performance optical setups, these windows can be fully customized to meet your requirements for material, surface flatness, surface quality, wedge angle, diameter, and thickness.
With decades of experience in sapphire optics, CSOC is a trusted manufacturer of precision optical components worldwide, delivering reliable, high-quality solutions to customers across industries.
Sapphire Stepped Windows
Specifications
| Material: | Custom, BK7, GaAs, Sapphire, UVFS, FS |
|---|---|
| Surface Flatness: | Lambda/40, Lambda/20, Lambda/10, Lambda/8, Lambda/6, Lambda/4, Lambda/2, Lambda |
| Surface Quality (Scratch-Dig): | 10-5, 20-10, 40-20, 60-40, 80-50 |
| Diameter: | 25 mm |
| Diameter: | 1 mm to 200 mm+ |
| Diameter Tolerance: | ±0.1 mm (±0.005 mm for customized high precision) |
| Thickness Tolerance: | ±0.1 mm (±0.005 mm for customized high precision) |
| Surface Quality: | 60/40 (10/5 for customized high precision) |
| Parallelism: | ±3 arcminutes (±5 arcseconds for customized high precision) |
| Flatness: | up to 1/4 lambda per 25.4 mm at 632.8 nm for customized high precision |
Got questions about specs? Use the inquiry form to ask.
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Features
- Custom-Made: Designed to meet your exact requirements in material, surface flatness, surface quality, wedge angle, diameter, or thickness.
- Premium Sapphire Material: Made from high-quality single-crystal sapphire (Al₂O₃), ensuring excellent hardness, thermal stability, and optical transmission across UV to IR wavelengths.
- Exceptional Precision: Achieve high surface flatness up to λ/10 and superior surface quality up to 10-5 scratch-dig, meeting rigorous industrial and scientific standards.
- Tight Tolerances: Overall dimensions controlled to ±0.01 mm with wedge angle tolerances as low as 20 arc seconds, providing reliable performance in high-precision optical systems.
- Versatile Applications: Ideal for laser systems, vacuum chambers, sensors, scientific instruments, and other high-performance optical setups requiring stepped sapphire windows.
- Trusted Expertise: Manufactured by China & South Optical Crystal (CSOC), a long-standing industry leader in custom sapphire optical components with decades of experience.
- Wide Range of Options: Available in various sizes, shapes, thicknesses, coatings, and surface qualities to suit diverse application needs.
Applications
Applications for Sapphire Stepped Windows
- Laser Systems and High-Power Laser Protection: Precision sapphire stepped windows are used as durable protective optical windows in laser cutting, laser welding, laser marking, laser engraving, medical lasers, and industrial laser processing equipment.
- Vacuum Chamber Viewports: Stepped sapphire windows are ideal for vacuum systems, deposition chambers, plasma equipment, and research instruments where high hardness, optical clarity, and reliable sealing are required.
- High-Pressure Optical Viewports: Sapphire stepped viewports are used in pressure vessels, hydraulic systems, flow cells, and high-pressure test chambers due to their excellent mechanical strength and resistance to deformation.
- Semiconductor Manufacturing Equipment: Sapphire optical windows are widely used in wafer processing tools, etching systems, lithography equipment, CVD/PVD chambers, plasma processing tools, and inspection systems.
- Analytical and Scientific Instruments: Custom sapphire stepped windows are suitable for spectrometers, photometers, Raman systems, fluorescence analyzers, laboratory sensors, and optical measurement instruments.
- UV, Visible, and IR Optical Systems: Sapphire windows provide broad transmission from ultraviolet to infrared wavelengths, making them useful in UV detection, IR imaging, thermal cameras, optical sensors, and multispectral instruments.
- Aerospace and Defense Optics: Sapphire stepped windows are used in missile domes, aircraft sensors, UAV cameras, targeting systems, infrared sensors, and ruggedized optical assemblies exposed to harsh environments.
- Medical and Biomedical Devices: Precision sapphire windows are used in endoscopes, surgical laser systems, diagnostic instruments, optical probes, and biomedical imaging devices requiring biocompatibility and scratch resistance.
- Oil and Gas Downhole Tools: Sapphire stepped windows are suitable for downhole sensors, pressure monitoring tools, optical probes, and drilling equipment where high temperature, high pressure, and chemical resistance are critical.
- Chemical Processing and Corrosive Environments: Sapphire optical viewports are used in chemical reactors, process monitoring systems, corrosive liquid inspection, and harsh industrial environments due to excellent chemical stability.
- Marine and Underwater Imaging: Sapphire stepped windows are used in underwater cameras, oceanographic instruments, ROV sensors, subsea lighting, and marine inspection systems requiring strong, scratch-resistant optical protection.
- Industrial Machine Vision: Sapphire protective windows are installed in machine vision cameras, inspection lenses, barcode scanners, optical sensors, and automation systems exposed to dust, abrasion, oil, and debris.
- Thermal Imaging and Infrared Sensors: Sapphire windows are used as protective IR-transmitting windows for thermal cameras, pyrometers, infrared detectors, and high-temperature monitoring systems.
- LED and Optoelectronic Packaging: Sapphire stepped windows can be used in LED modules, photodiode packages, detector housings, and optical electronic assemblies requiring stable transmission and mechanical durability.
- Hermetic Sealing and Optical Feedthroughs: The stepped geometry allows improved positioning and sealing, making sapphire stepped windows suitable for hermetic packages, sensor housings, and sealed optical assemblies.
- High-Temperature Furnace Observation: Sapphire view windows are used in furnaces, combustion chambers, thermal process equipment, and high-temperature inspection ports due to excellent thermal resistance.
- Plasma and Fusion Research Equipment: Sapphire stepped windows are used in plasma diagnostics, fusion research systems, RF plasma chambers, and optical monitoring ports where durability and vacuum compatibility are required.
- Robotics and Harsh-Environment Sensors: Rugged sapphire optical windows protect robotic vision systems, LiDAR sensors, proximity sensors, and automation optics operating in abrasive or contaminated environments.
- Automotive and Transportation Sensors: Sapphire stepped windows are suitable for LiDAR, ADAS sensors, combustion monitoring, engine diagnostics, and optical inspection systems requiring impact and scratch resistance.
- Custom OEM Optical Assemblies: Custom sapphire stepped windows can be manufactured for OEM optical devices, precision instruments, sensor modules, sealed housings, and specialty photonics applications requir
Frequently Asked Questions
What are sapphire stepped windows used for?
Sapphire stepped windows are precision optical windows with a machined step or shoulder that helps with mounting, sealing, alignment, or integration into housings. They are commonly used in laser systems, optical sensors, vacuum viewports, high-pressure chambers, harsh-environment imaging, medical devices, aerospace systems, and industrial inspection equipment.
What diameter range is available for these sapphire stepped windows?
These sapphire stepped windows are available from 1 mm to 200 mm+ in diameter. Custom sizes can be manufactured for applications requiring specific outer diameters, clear apertures, step dimensions, or mounting geometries.
What tolerances can be achieved for custom sapphire stepped windows?
Standard diameter and thickness tolerances are ±0.1 mm. For customized high-precision sapphire stepped windows, tolerances can be improved to ±0.005 mm, depending on the size, design complexity, and application requirements.
What optical surface quality is available for sapphire stepped windows?
The standard surface quality is 60/40 scratch-dig, suitable for many industrial and protective optical applications. For demanding laser, imaging, or high-performance optical systems, customized high-precision surface quality down to 10/5 scratch-dig is available.
How flat are these sapphire stepped optical windows?
For customized high-precision sapphire stepped windows, optical flatness can be manufactured up to 1/4 lambda per 25.4 mm at 632.8 nm. This makes them suitable for applications where low wavefront distortion and stable optical performance are important.
Why choose sapphire instead of glass or fused silica for stepped windows?
Sapphire offers exceptional hardness, high wear resistance, excellent chemical resistance, high temperature stability, and good optical transmission from the UV through near-IR and into the mid-IR. Compared with many optical glasses, sapphire is better suited for harsh environments, abrasive conditions, pressure-resistant assemblies, and protective optical windows.
Can sapphire stepped windows be customized for high-precision optical assemblies?
Yes. Sapphire stepped windows can be customized for diameter, thickness, step geometry, surface quality, parallelism, and flatness. High-precision options include ±0.005 mm dimensional tolerances, 10/5 scratch-dig surface quality, parallelism down to ±5 arcseconds, and flatness up to 1/4 lambda per 25.4 mm at 632.8 nm.
Got more questions? Use the inquiry form to ask the supplier directly.
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