• 产品名称: Optcal Preform

  Introduction:

  Prefabricated parts can be divided into spherical prefabricated parts with the curvature R, spherical small ball prefabricated parts as well as double-plane prefabricated parts of which the two surfaces are planes in shape, and are substrates for making aspheric glass.

  Advantages:

  1.As a peculiar low-melting-point materials of Chengdu Guangming, it has good profiling features;

  2.It can be used for processing products with the D/R of about 1.96; and its appearance quality can reach a higher level;

  3.The problem of cylindrical surface scaling-off in the profiling process can be avoided by a unique process.

  Technical Parameters: (Spherical, Planar)

Items Specifications
Aperture ±2circles
Local errors 5circles
Central thickness ±0.02mm
OD tolerance ±0.01mm
Rise ±0.02mm
Appearance MIL20-10

 

  Technical Parameters: (Ball)

External diameter External Diameter Accuracy True sphericity Appearance
Φ0.8mm~Φ2mm ±0.003mm  ≤0.0004mm MIL 20-10
Φ2.1mm~Φ5mm ±0.003mm  <0.003mm MIL 20-10
Φ5.1mm~Φ10mm ±0.005mm  <0.005mm MIL 20-10
Φ10.1mm~Φ15mm ±0.010mm   <0.010mm MIL 40-20
Φ15.1mm~Φ20mm ±0.015mm   <0.015mm MIL 60-40
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