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1. Prism

Material: BK7
A = h = 15 x 15mm
Dimension Tolerance: +0.1mm
Parallelism: 3 sides
Penta angle: 90 degrees +/-2 arc Sec
Flatness: Lambda/10 at 632.8nm
Surface Quality: 20 to 10 scratch and dig
Coating surface polished
Anti reflective ...

2. Achromatic lens(Cemented lens)

Achromatic Lens with +/-0.20 Center Thickness Tolerance, Doublet and Triplet Lenses are Available
Model Number:Achromatic lens(Cemented lens)
Material: Bk7 glass and ZF2 (or ZF4)
EFL: +/_2%
Diameter: +0, -0.18
Center thickness tolerance: ...