Shanghai Longway Special Glass Co., Ltd.
| Payment Terms | D/P,T/T,Western Union |
| Supply Ability | 50000 Pieces per Month |
| Packaging Details | electrolytic capacitor paper,foam,carton |
| Item | Fused Silica Glass Optical Flat Windows |
| Surface | Clear and transparent |
| Transmission | >90% for visible light |
| Coating | Available |
| Processing | Tempering and polishing |
| OEM | Available |
| Brand Name | LONGWAY |
| Model Number | LW0193252 |
| Certification | ISO9001 |
| Place of Origin | Shanghai, China |
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Product Specification
| Payment Terms | D/P,T/T,Western Union | Supply Ability | 50000 Pieces per Month |
| Packaging Details | electrolytic capacitor paper,foam,carton | Item | Fused Silica Glass Optical Flat Windows |
| Surface | Clear and transparent | Transmission | >90% for visible light |
| Coating | Available | Processing | Tempering and polishing |
| OEM | Available | Brand Name | LONGWAY |
| Model Number | LW0193252 | Certification | ISO9001 |
| Place of Origin | Shanghai, China | ||
| High Light | Fused Silica Glass Optical Flat Windows ，Custom Optical Windows ，Fused Silica Glass Optical Windows | ||
Custom Fused Silica Glass Optical Flat Windows for Precision Instruments
Material & Core Properties:
These windows are manufactured from high-purity synthetic fused silica (SiO₂), a premier material for advanced optics.
Exceptional Surface Flatness: Custom-produced to stringent flatness specifications, often to λ/10 or λ/20, ensuring minimal wavefront distortion for accurate measurement and imaging.
Broad Spectral Transmission: Features excellent transmission from the deep ultraviolet (UV, ~185nm) through the visible spectrum and into the near-infrared (NIR, ~2.5µm), making it ideal for multi-wavelength systems.
Ultra-Low Thermal Expansion: Possesses an extremely low coefficient of thermal expansion (~0.55 x 10⁻⁶/°C), providing exceptional dimensional stability under thermal cycling and preventing focus drift.
High Laser Damage Threshold & Chemical Inertness: Resists damage from high-power laser beams and is highly resistant to scratching, water, and most acids, ensuring longevity in harsh operational environments.
Primary Function:
The core function of an optical flat window is to provide a sealed, optically neutral interface. It is designed to:
Protect Sensitive Internal Components from dust, moisture, chemicals, and physical contact while allowing light to pass through with minimal absorption or distortion.
Maintain Pressure or Vacuum within an instrument chamber without altering the optical path.
Serve as a Reference Surface in interferometry and other metrology tools due to its exceptional surface flatness and homogeneity.
Key Applications:
Laser & Electro-Optical Systems: As entrance/exit windows for laser cavities, enclosures, and high-power laser cutters.
Precision Metrology Instruments: In interferometers, spectrometers, and autocollimators where a reference plane is critical.
Semiconductor Processing Equipment: For inspection windows in lithography, etching, and CVD chambers requiring UV transmission and chemical resistance.
Aerospace & Defense Sensors: As durable, stable viewports for satellites, rangefinders, and targeting systems exposed to extreme conditions.
Scientific Research Apparatus: In vacuum chambers, cryogenic systems, and experimental setups where broadband transmission and thermal stability are paramount.
| Item | Optical Window, Glass disc, Sight glass |
| Material | Optical glass, Qurartz glass, Pyrex, borosilicate glass, Float glass, borofloat |
| Diameter Tolerance | +0/-0.2 mm |
| Thickness Tolerance | +/-0.2 mm |
| Processed | By Cutting,Grinding,Tempering, Polishing |
| Working temperature | Resisting high temperature shock |
| Surface Quality | 80/50,60/40,40/20 |
| Material Quality | No scratches and air bubble |
| Transmission | >92% for visible light |
| Chamfer | 0.1-0.3 mm x 45 degree |
| Surface Coating | Available |
| Usage | Laser System, Lighting system, industrial area. |
Company Details
Business Type:
Manufacturer,Agent,Exporter,Trading Company,Seller
Year Established:
2008
Total Annual:
1000000-5000000
Employee Number:
30~100
Ecer Certification：
Active Member
Introduction Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for busines... Introduction Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for busines...
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