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Shanghai Longway Special Glass Co., Ltd.
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Customized BK7 B270 Optical Glass Convex Dome Lens For Smart Devices

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Shanghai Longway Special Glass Co., Ltd.

City: shanghai

Province/State:shanghai

Country/Region:china

Tel:86-21-58508292

Contact Person:
Mr.Dai
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Customized BK7 B270 Optical Glass Convex Dome Lens For Smart Devices

Brand Name LONGWAY
Model Number LW160920123
Certification ISO9001
Place of Origin Shanghai, China
Minimum Order Quantity 100 pieces
Price NEGOTIATION
Payment Terms D/P,T/T,Western Union
Supply Ability 2000 Pieces per Month
Packaging Details electrolytic capacitor paper,foam,carton
Delivery Time 30 days
Structure Optical Dome Lens
Surface Optical grade
Transmission over 90%
Coating available
Processing Grinding and polishing
OEM available
Detailed Product Description



Customized BK7 B270 Optical Glass Convex Dome Lens For Smart Devices



  1. Glass Material:

    • N-BK7 & B270 Crown Glass:

      • N-BK7: Borosilicate crown glass with high transmission (350–2000 nm), low dispersion, and excellent thermal stability.

      • B270: Soda-lime crown glass with similar optical clarity (380–2500 nm), often used for cost-effective precision optics. Both materials prioritize homogeneity and low bubble/inclusion content.

  2. Key Properties:

    • Dome Geometry: Convex curvature provides wide-angle light collection, minimizes spherical aberration, and protects underlying optics.

    • High Transmission: >90% light transmission in visible spectrum (400–700 nm) for BK7; B270 offers comparable clarity.

    • Thermal Resilience:

      • BK7: Low thermal expansion (3.3 × 10⁻⁶/K).

      • B270: Moderate thermal stability (8.5 × 10⁻⁶/K), suitable for controlled environments.

    • Surface Quality: Precision-polished surfaces (scratch-dig: 40-20 or better) reduce scatter and distortion.

    • Durability: Resists humidity, mild acids, and mechanical wear.

  3. Primary Functions:

    • Focuses or collimates light in wide-angle optical systems.

    • Enhances light collection efficiency in imaging and sensing applications.

    • Protects sensitive components (e.g., sensors, LEDs) from environmental damage.

    • Corrects aberrations in compact optical assemblies.

  4. Applications:

    • Imaging Systems: Surveillance cameras, drone optics, and fisheye lenses.

    • Lighting: LED collimation, automotive headlights, and stage lighting.

    • Sensors: LiDAR, motion detectors, and industrial inspection systems.

    • Medical Devices: Endoscope tips, dermatology tools, and diagnostic sensors.

    • Aerospace/Defense: Missile domes, cockpit displays, and thermal imaging windows.

    • Advantages Over Alternatives:

      • BK7: Superior thermal/chemical resistance vs. B270.

      • B270: Cost-effective for non-extreme environments.

      • Dome shape reduces need for additional protective optics.

  5. Target Industries:

    • Consumer electronics (cameras, smart devices).

    • Automotive and aerospace engineering.

    • Industrial automation and robotics.

    • Medical technology and defense.



NameOptical Domed Lens
MaterialOptical glass, Qurartz glass, borosilicate glass
Diameter Tolerance+0/-0.15 mm
Thickness Tolerance+/-0.15mm
Processedby grinding, polishing
Surface Quality80/50,60/40,40/20
Material Qualityno scratches and air bubble
Transmissionabove 90%
Chamfer0.1-0.5 mm x 45°
Surface CoatingAvailable
UsagePhotography, Lighting system, Optics










Product Tags: Optical Glass Convex Dome Lens    BK7 B270 Optical Glass Convex Dome   Optical Glass dome  
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