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Plano and Parallel Plates, Filters, Mirrors
Plano optics for varied applications: plano plates; wedge-shaped plates with customized shapes and angles; elliptical plano and parallel plates; windows and mirrors; filter glasses
Manufacturing Tolerances
Dimensions from 5 to 100 mm as well as rectangular shape.
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Tolerances
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Commercial quality
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Precision quality
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Manufacturing limits
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GlassQuality
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Nd
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+/-0.001
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+/-0.0005
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Melt controlled
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Vd
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+/-0.8%
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+/-0.3%
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Melt controlled
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Diameter(mm)
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+0/-0.10
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+0/-0.05
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+0/-0.01
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Center Thickness(mm)
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±0.10
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±0.02
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±0.005
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Scratch-Dig
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80-50
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40-20
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10-5
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Irregularity (fringe)
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2
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0.5
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0.1
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Parallelism (arc min)
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3~5 arc minutes
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1 arc minute
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0,5 arc min
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Bevels
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Upon requirement
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No bevel
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Coatings
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Upon requirement
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