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Optical lenses manufacturer
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SIo2 :
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99.90%
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Density :
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2.2(g/cm3)
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Degree of hardness moh’scale :
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6.6
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Melting point :
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1732°C
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orking temperature :
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1100°c
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Max teperature can reach in a short time :
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1100°c
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Acid tolerance :
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30timesthan Ceraics， 150ties than Stainless steel
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Visible light transmittance :
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above93%
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UV spectral region transmittance :
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80%
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Resistance value :
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10000ties thanordinary glass
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Annealing point :
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1180°c
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softening point :
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1630°c
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Strain point :
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1100°c
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Other details
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Parameter
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Standard Grade
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Precision Grade
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ultra-precisionGrade
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Dimensional Tolerance
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+/-0.1
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+/-0.1
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+/-0.1
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clear Aperture
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>80% to >90%
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>80% to >90%
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>80% to >90%
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SurfaceQuality
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60-40
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40-20
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20-10 to 10-5
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Parallelism
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1arc min
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30arc second
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1arc min
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avefront Distortion
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1λper 25m
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λ/4
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λ/10
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Protective Bevel
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<0.25×45 deg
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<0.25×45 deg
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<0.25×45 deg
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Coating
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Optional
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Optional
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Optional
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Dimension
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Depend on material
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Thickness
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Depend on material
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shape:
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round
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color:
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clear
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material:
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quartz glass
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application:
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optical
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