China 25x27x6mm Uncoated Plano-Concave Cylindrical Optical Lenses, Find details about China Optical Lenses, Plano Concave Lenses from 25x27x6mm Uncoated Plano-Concave Cylindrical Optical Lenses
Items | Description | |
Concave Lens | Material: | Schott N-BK7 |
Dimensions: | 25.0+0.0/-0.5x27.0+/-0.05mm | |
Center thickness: | 6.00+/-0.10mm | |
R1: | infinity | |
R2: | 120mm+/-0.5%,CYL CC | |
Flatness: | S2:IRR<1/2L@633nm | |
Surface quality: | S1:commerical polish | |
S2:60-40 | ||
Centerness: | <50um | |
Clear aperture: | >90% | |
Chamfer: | protected | |
Coating: | uncoated | |
Standard: | MIL-PRF-13830B |