Bi-Concave Lenses
Product Detailed
Bi-Concave Lenses
Diameter Tolerance: +0/-0.1mm
Focal Length: +/-2%
Centration: < 3 arc minutes
Clear Aperture: >95%
Bi-Concave Lenses
Negative lens with the form most suited to producing diverging light or a virtual image, where the input light is converging.
Materials: BK7 grade A optical glass
Design Wavelength: 546.1nm
Design Index: 1.5187
Diameter Tolerance: +0/-0.1mm
Focal Length: ±2%
Centration: < 3 arc minutes
Clear Aperture: >95%
Surface Figure: l/4 @ 632.8nm
Surface Quality: III
Bevel: 0.2mm to 0.5mm×45°
