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Product Details
Specifications:
1. Material: N-BK7 or other materials
2. Surface Quality: 40/20
3. Surface Flatness: ≤ 1λ irregularity in Y axis @633nm
4. Focal Length Tolerance: ≤1%
5. Centration: ≤3arc min
6. Clear Aperture: ≥Central 90%
Address: Building 5, 1258 erudite road, Jiading District, Shanghai
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