Dia12.7mm EFL-30mm N-BK7 Biconcave Lenses 350-650nm AR Coating

Code: 1108-008A

$17.50

Qty 2-5
$15.75

Qty 6
$14.18

Specifications:

Lens Form	Biconcave Lens	Material	N-BK7
Diameters(mm)	12.7(+0.0/-0.1)	Design Wavelength(nm)	587.6
Effective Focal Length EFL(mm)	-30.00±1%	Back Focal Length BFL(mm)	-30.97
Coating	350-650nm AR Coating	Surface Quality(S/D)	40/20
Irregularity@632.8nm	λ/4	Centration Error(arc min)	≤2
Center Thickness	3.0±0.1	Edge Thickness	4.3±0.1
Curvature Radius R1	-31.41	Clear Aperture	90%
Protective Chamfer	0.2mmx45°	Wavelength Range(nm)	350-2200

Dia12.7mm EFL-30mm N-BK7 Biconcave Lenses 350-650nm AR Coating, Code: 1108-008A

Biconcave Lenses or Double Concave Lenses are optical lenses with two inward-bent spherical surfaces of identical radii of curvature. A double concave lens has a negative focal length and diverges a collimated light beam to the virtual focal point and increases the focal lengths of a lens group.

This catalog features Shalom EO’s Off-the-shelf N-BK7 Biconcave and UV Fused Silica Biconcave Lenses.

N-BK7

12.7mm

-30mm

λ/4

350-650nm AR Coating

$17.5

1~2 Weeks