Sapphire Square Window Optical Glass Wear-Resistant High
Transmittance Customizable
The sapphire square window plate is a high-performance optical
component crafted from single-crystal aluminum oxide (Al₂O₃),
offering exceptional durability and optical clarity for demanding
applications. Available in standard sizes ranging from 5×5mm to
200×200mm with thickness options of 0.3-15mm, these window plates
can be customized to specific dimensional requirements including
unique edge profiles and surface treatments. Our precision
manufacturing capabilities include laser cutting and CNC machining
to achieve tight tolerances, along with optical polishing to λ/10
surface flatness standards, while optional anti-reflective coatings
(R<0.5% per surface) further enhance light transmission
performance for specialized optical systems.
Key Characteristics
1. High Transmittance: The sapphire square window plate
demonstrates excellent optical transmittance (>80%) across
ultraviolet (UV) to infrared (IR) wavelengths (0.15-5.5μm), making
it suitable for broadband spectral applications.
2. Exceptional Hardness & Wear Resistance: With a Mohs hardness of
9 (second only to diamond), it effectively resists sand erosion,
particle impact, and mechanical abrasion, ensuring extended service
life.
3. Extreme Environment Resistance: Capable of withstanding high
temperatures (melting point 2040°C) and corrosive conditions
(stable in acid/alkali environments), ideal for demanding aerospace
and military applications.
4. Low Thermal Expansion Coefficient: Exhibits outstanding thermal
stability, maintaining optical surface precision during rapid
temperature fluctuations to prevent image distortion.
Technical Parameters
Property | Value |
Orientation Tolerence | < 0.5° |
Thickness/Diameter Tolerance | ±0.05 mm |
Surface Flatness | λ/4@632 nm~3λ |
Wavefront Distortion | ＞λ/4@632 nm |
Surface Quality | 20/10~80/50 |
Parallel | 30 ″ |
Perpendicular | 15 ′ |
Clear Aperture | >90% |
Chammfer | <0.2×45° |
dimensions | 5x5mm ~76.5x76.5mm 150x150mm square shape |
Primary Applications
1. Optoelectronic Equipment Windows: Used as protective windows for
lasers and infrared thermal imagers, ensuring stable operation in
dusty, humid, or high-temperature environments.
2. Aerospace & Military: Serves as missile radomes and observation
windows for airborne electro-optical pods, combining lightweight
properties with impact resistance.
3. Industrial Sensing & Inspection: Functions as
corrosion-resistant viewports for semiconductor equipment and
high-temperature industrial cameras, guaranteeing long-term
reliability.
4. Scientific Research & Medical: Employed in high-energy laser
experiments and endoscopes, providing high-purity surfaces and
biocompatibility.
