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cd mastering substrate, photomask, glass substrate, Manufacturer and Supplier - China(CN)
OMP170 Glass Substrate (10000)
2.1 Materials
The raw material of the glass substrate is class AA glass supplied from Pilkington.
2.2 Outer diameter
Outer diameter is measured with a vernier caliper.
Outer diameter p1700.1 (mm) 2.3 Thickness
Thickness is measured with a micrometer caliper.
Thickness 1.230.05 (mm) 2.4 Parallelism
Parallelism should be less than 10gm, and it is measured with a optical
interferometer.
2.5 Flatness
Flatness should be less than 10 gm, and it is measured with a optical interferometer.
2.6 Roughness
Roughness should be less than 20A , and it is measured with GPIxP Interference
Horizontal System .
2.7 Edge
Beveled edges should be ground, and the dimensions are as follows.
C = 0.2 mm X 45XC
2.1 Materials
The raw material of the glass substrate is class AA glass supplied from Pilkington.
2.2 Outer diameter
Outer diameter is measured with a vernier caliper.
Outer diameter p1700.1 (mm) 2.3 Thickness
Thickness is measured with a micrometer caliper.
Thickness 1.230.05 (mm) 2.4 Parallelism
Parallelism should be less than 10gm, and it is measured with a optical
interferometer.
2.5 Flatness
Flatness should be less than 10 gm, and it is measured with a optical interferometer.
2.6 Roughness
Roughness should be less than 20A , and it is measured with GPIxP Interference
Horizontal System .
2.7 Edge
Beveled edges should be ground, and the dimensions are as follows.
C = 0.2 mm X 45XC
