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Material | K9 BK7 or other materials required by customers |
Surface Quality | 60/40 40/20 |
Surface Flantness | λ/4@633nm |
Clear Aperture | central 80% |
Diameter Tolerance | +/0.0-0.1mm |
Coating | Custom requirements |
Beam Deviation | 0°±3. arc min |
application | Teaching or scientific experiment |








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