| Lens is defined as a transparent optical component consisting of one or more pieces of optical glass with curved surfaces (usually spherical). The lens is usually working to converge or diverge the transmitted rays from an object, thus to form a real or virtual image of that object. |
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| Material | UV grade fused silica, BK7 |
| Size | 3mm-220mm |
| Dimension Tolerance | +0.0/-0.2mm |
| Centration | <3 arc min |
| Focal Length Tolerance | +/-2% |
| Flatness | 1/10λ－1λ |
| Surface Quality | 40/20－80/50 |
| Chamfer | 0.2mm at 45°typical |
| Coating | as requested |