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| Categories | Optical Window |
|---|---|
| Brand Name: | LONGWAY |
| Model Number: | LW01958912 |
| Certification: | ISO9001 |
| Place of Origin: | Shanghai, China |
| MOQ: | 1000 pieces |
| Price: | NEGOTIATION |
| Payment Terms: | D/P,T/T,Western Union |
| Supply Ability: | 200000 Pieces per Month |
| Packaging Details: | electrolytic capacitor paper,foam,carton |
| Item: | Optical Substrate |
| Surface: | Clear and transparent |
| Transmission: | >90% for visible light |
| Coating: | Available |
| Processing: | Tempering and polishing |
| OEM: | Available |
| Company Info. |
| Shanghai Longway Special Glass Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
N-BK7 Crown Glass Optical Substrate for High Power Laser and Optical System
N-BK7 Crown Glass Optical Substrate is a high-quality, versatile optical material specifically engineered for demanding applications in high-power laser systems and precision optical instruments. As one of the most widely used optical glasses globally, it provides an optimal balance of optical performance, mechanical stability, and manufacturing versatility.
1. Material & Composition
N-BK7 is a borosilicate crown glass known for its exceptional
homogeneity and consistent refractive index across the entire
substrate. This optical glass is manufactured under strictly
controlled conditions to minimize internal stresses, bubbles, and
inclusions, ensuring predictable performance in critical optical
applications where material imperfections could compromise system
integrity.
2. Key Properties & Characteristics
Excellent Transmission: Provides outstanding light transmission from 350nm in the UV to 2000nm in the near-infrared spectrum, making it suitable for broad-spectrum applications
High Laser Damage Threshold: Specifically formulated to withstand high power densities, making it resistant to laser-induced damage in demanding laser applications
Superior Homogeneity: Exhibits exceptional refractive index consistency throughout the material, minimizing wavefront distortion and optical aberrations
Low Thermal Expansion: Features a low coefficient of thermal expansion, maintaining dimensional stability across varying temperature conditions encountered in laser and optical systems
3. Primary Function & Optical Performance
This optical substrate primarily serves as a fundamental building
block in optical systems, functioning as windows, lenses, prisms,
beam splitters, and mirrors. Its precisely controlled surface
quality and material properties ensure minimal wavefront
distortion, high transmission efficiency, and reliable performance
under rigorous operating conditions. The substrate can be
precision-polished to achieve various surface figures and finishes
suitable for both visible and near-infrared applications.
4. Application & Uses
N-BK7 optical substrates are essential components across multiple
high-technology sectors:
High-Power Laser Systems: Used as laser windows, output couplers, and lens elements in industrial, medical, and research laser equipment
Precision Imaging Systems: Incorporated in microscope objectives, telescope lenses, and photographic lens assemblies where clarity and minimal distortion are critical
Spectroscopy Instruments: Served as windows and prisms in analytical instruments requiring broad spectral transmission
Aerospace & Defense Optics: Utilized in targeting systems, surveillance equipment, and flight instrumentation demanding reliability under extreme conditions
Metrology & Interferometry: Employed as reference flats and precision optical components in measurement systems requiring exceptional surface accuracy
| Item | Optical Window, Glass disc, Optical Substrate |
| 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. |
|
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