BK7 Glass Wafer
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BK7 Glass Wafer

Offer 3"-8" BK7 glass wafers with customized
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Product Description

Typical Specifications

12163171_BK7glassWafer-1


Basic materials characteristics

item

data

Density

2,51 g/cm3

Refractive Index (nd)

1,51680

Linear Thermal Coefficient of Expansionα

  1. 1.    7,1 x10-6/K (-30°C to +70°C)

  2. 2.    8,3 x10-6/K (+20 to +300°C)

Transformation Temperature

557°C

Annealing Point (1013 dPa·s)

557°C

Softening Point(107.6 dPa·s)

719°C


The possible applications
  1. General optical applications

  2. Mirror substrates

  3. Substrates for mirror coatings

  4. Substrate for filter coatings

  5. Measurement and Sensor-Technology


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