MSE PRO BK7 Plano-Concave Lenses with 1/4 Wave MgF2 Coating@550nm, Ø6mm
SKU: ACB7PC5-6--9.8
MSE PRO™ BK7 Plano-Concave Lenses with 1/4 Wave
MgF2 Coating@550nm, Ø6mm
MSE supplies offers Ø6mm BK7 Plano-Concave Lenses with 1/4 Wave MgF2 Coating@550nm. It is a plano-concave lens diverges parallel input rays. It has a negative focal length. While the output rays do not actually meet to form a point, they do appear to be diverging from a virtual image located on the object side of the lens. At absolute conjugate ratio greater than 5:1 and less than 1:5, plano-concave lenses are nearly the best form lens to reduce spherical aberration, coma, and distortion. The curved surface of the lens should face the object in distance or infinite conjugate, except in a high energy laser system, this should be reversed to eliminate the possibility of a virtual focus.
MSE Supplies can offer a variety of optical elements, with different focal length and coating options. Please contact us for customization or bulk orders.
Technical Data:
Material | BK7 grade A, fine annealed |
Diameter (Ø) Tolerance | +0.0/-0.20 |
Center Thickness (Tc) | ±0.1 |
Centration | 3’ |
Form Error | 1 ~ 5 fringes |
Irregularity of Fringes | 0.2 ~ 0.5 fringes |
Surface Quality | 60-40 scratch-dig |
Clear Aperture | 90% diameter |