China Customized Double Concave Lens Optical Instrument, Find details about China Endoscope, Glass Lens from Customized Double Concave Lens Optical Instrument
Attribute | Commercial | High Precision |
Typical Material | BK7 | BK7 , Fused Silica |
Typical Dimension X*Y (mm) | 10*10 | 10 * 30 |
Diameter Tolerance (mm) | +0.00/-0.2 | +0.00/-0.2 |
Focus Length Tolerance(mm) | Typical +/-2%@633nm | Typical +/-2%@633nm |
Centration ( arc min) | Typical < 3 | Typical < 3 |
Surface Figure X (per 25mm@632.8nm) | 1 /2 | 1/4 |
Surface Figure Y(per 25mm@632.8nm) | 2λ | λ |
Surface Quality (scatch/dig) | 60-40 | 10-5 |
Bevel (face width * 45° mm) | 0.2--0.5 | 0.05-0.2 |
coating | wavelength:AR: R≤0.25% per surface broadband AR R≤0.5% per surface | As requested |