Low-Softening-Point Preform
Low-softening-point preforms in various shapes and materials are produced for precision molding. Molded components are widely used in digital-camera lenses, projection lenses, automotive lenses, surveillance lenses, riflescopes, mobile-phone camera modules and smart-device vision lenses. Materials include the D-K, D-PK, D-ZPK, D-ZK, D-LaK, D-ZF, D-LaF and D-ZLaF optical-glass series. Preform shapes include spherical forms, plane-parallel discs and small balls, with customization available.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Spherical Preform - Outside Diameter | 6mm～90mm |
| Spherical Preform - Outside Diameter Tolerance | ±0.008mm |
| Spherical Preform - Thickness Tolerance | ±0.02mm |
| Spherical Preform - Radius of Curvature | R≥3mm |
| Spherical Preform - Surface Imperfections (MIL) | 20-10 |
| Preform with Two Plane Faces - Outside Diameter | 5mm～150mm |
| Preform with Two Plane Faces - Thickness Tolerance | ±（0.01～0.05）mm |
| Preform with Two Plane Faces - Surface Imperfections (MIL) | 20-10 |
| Standard Ball - Outside Diameter | 0.5mm～30mm |
| Standard Ball - Outside Diameter Tolerance | ±（0.003～0.015）mm |
| Standard Ball - Surface Imperfections (MIL) | 40-20 |
| Standard Ball - Sphericity | 0.002mm |
| Fiber Ball - Outside Diameter | 2mm |
| Fiber Ball - Outside Diameter Tolerance | ±0.003mm |
| Fiber Ball - Surface Imperfections (MIL) | 20-10 |
| Fiber Ball - Sphericity | 0.0004mm |
Datasheet
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