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Features
Achromatic lenses are doublet systems consisting of one crown and one flint element, cemented together along a matching curvature, so that white light coming into the lens is all focused (imaged) at the same point on the other side of the lens.They are designed to minimize spherical and chromatic aberrations for infinite conjugate, visible spectrum imaging applications. When used on-axis, an achromatic lens focuses an parallel input beam to a perfect "point", limited only by the effects of diffraction. This performance can be achieved over a broadband of wavelength. Achromatic lenses can be used to collimate and focus laser beams. They can also be used for high-quality imaging on-axis. However, the off-axis performance is significantly worse than the on-axis performance. If your application requires good optical performance off-axis as well as on-axis, multi-element lenses.

Specifications
Specifications:
Material: see the table as follow
Design Wavelength: 480, 546.1, 643.8nm
Diameter Tolerance: +0.0/-0.1mm
Paraxial Focal Length: ±2%
Centration: 3 arc minutes
Surface Figure : l/4 @ 632.8 nm
Surface Quality: 60/40
Clear Aperture: >80%
Bevel: <0.25mm X 45°
Coating: l/4 wave MgF2@550nm

             
 
Item# φ f R1 R2=R3 R4 Tc Te fb Lens A Lens B
ALP0-001 6.0 15.0 8.831 -6.55 -19.77 2.71 1.0 13.07 BK7 SF5
ALP0-002 6.0 20.0 12.36 -8.51 -24.38 2.6 1.0 18.29 BK7 SF5
ALP0-003 6.0 25.0 15.70 -10.67 -29.99 2.3 1.0 23.46 BK7 SF5
ALP0-004 6.0 30.0 18.88 -12.94 -36.48 1.9 1.0 28.69 BK7 SF5
ALP0-005 8.0 25.0 15.60 -10.81 -30.48 2.9 1.0 23.13 BK7 SF5
ALP0-006 8.0 30.0 18.88 -12.88 -36.22 2.7 1.0 28.28 BK7 SF5
ALP0-101 10.0 20.0 12.32 -9.02 -25.23 3.8 1.0 17.63 BK7 SF5
ALP0-102 12.0 25.0 15.35 -11.35 -31.92 4.2 1.3 22.29 BK7 SF5
ALP0-103 12.7 30.0 18.54 -13.49 -37.84 4.0 1.3 27.36 BK7 SF5
ALP0-104 12.7 40.0 25.23 -17.54 -48.75 3.4 1.3 37.78 BK7 SF5
ALP0-105 12.7 50.0 31.26 -21.93 -62.37 3.1 1.3 47.99 BK7 SF5
ALP0-106 12.7 60.0 37.33 -26.42 -75.86 2.8 1.3 58.13 BK7 SF5
ALP0-107 12.7 75.0 46.77 -32.96 -94.62 2.6 1.3 73.23 BK7 SF5
ALP0-108 13.0 40.5 25.41 -18.07 -50.47 3.0 1.3 38.48 BK7 SF5
ALP0-109 14.0 44.0 27.54 -19.54 -54.95 3.3 1.3 41.83 BK7 SF5
ALP0-111 18.0 40.0 24.27 -18.37 -53.09 5.4 1.5 36.51 BK7 SF5
ALP0-112 18.0 50.0 31.69 -22.00 -60.57 4.8 1.5 46.99 BK7 SF5
ALP0-113 18.0 60.0 37.84 -26.49 -73.79 4.1 1.5 57.30 BK7 SF5
ALP0-202 25.4 60.0 37.33 -27.16 -75.86 7.0 2.0 55.57 BK7 SF5
ALP0-205 25.4 120.0 73.28 -54.33 -159.9 4.2 2.0 117.1 BK7 SF5