Sapphire Lens

Sapphire is a single crystal aluminum oxide (Al2O3). Its Mohs hardness is 9, it is one of the hardest materials. Sapphire has good mechanical strength, and it is also transparent from visible to IR spectrum. So, it is always used as window material where scratch resistance is required.

Specifications

Material	Optical Sapphire
Dimension Tolerance	+0/-0.1mm
Thickness Tolerance	±0.2mm
Surface Quality	60/40 or better
Power(fringe@633nm)	3
Irregularity(fringe@633nm)	0.5
Centration	<3 arc minutes
Focal Length Tolerance	±2%
Clear Aperture	>90%
Chamfer	Protective <0.5mmx45deg
Coating	Request

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