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Lens Specifications

Design Wavelength	780 nm	Magnification	Infinite
Numerical Aperture	0.15	Window Thickness	0.25 mm
Clear Aperture	5.50 mm	Laser Window Material / Index	N-BK7/1.5
Effective Focal Length	18.4 mm	Glass	ECO-550
Working Distance	17.13 mm	Surface Quality	40-20 Scratch-Dig(Entire Bulk Material)

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352280-A
C280TME-A

Vd number	50.28
CTE (10-6 / °C)	11.62
Thermo optic coefficient (10-6 / °C) (Δn/ΔT)	2.39

Surface R(mm) k A4	Side 1 - - -	Side 2 10.99 -0.706123000 0.000010819

Side 1 and Side 2 are labeled as ASP1 and ASP2, respectively, on the drawings shown on the Specifications tab.

z	SAG as a Function of Y	A4	4th Order Aspheric Coefficient
R	Radius of Curvature	A6	6th Order Aspheric Coefficient
k	Conic Constant	A8	8th Order Aspheric Coefficient
A2	2nd Order Aspheric Coefficient	A10	10th Order Aspheric Coefficient