Negative Single Lenses

The negative single lenses are often used in combination with planoconvex lenses to expand a beam diameter or make a different combination focal length while decreasing the residual spherical aberration.

We carry on stock BK7 bi concave and plano concave lenses, either AR coated or not

• Diameter tolerance: +0/-0,1mm
• Thickness tolerance: +/-0.1mm
• Focal length tolerance: +/-1%
• Focal length is calculated at 546.1nm
• Surface accuracy: λ/4 @632,8nm
• S/D < 60/40
• Centration < 3 arc min
• Damage threshold of broadband AR coating: >5J/cm^2, 20ns, 20Hz, 1064nm