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Lens Specifications

Design Wavelength	810 nm	Magnification	Infinite
Numerical Aperture	0.3	Window Thickness	0.275 mm
Clear Aperture	4.50 mm	Laser Window Material / Index	N-BK7/1.5
Effective Focal Length	7.5 mm	Glass	H-LAK54
Working Distance	5.90 mm	Surface Quality	60-40 Scratch-Dig(Entire Bulk Material)

A375-B
A375TM-B

V_d number	51.05
CTE (10^-6 / °C)	5.2
Thermo optic coefficient (10^-6 / °C) (Δn/ΔT)	6.7

Surface
R(mm)
A₄
A₆
A₈

ASP(1)
-94.7
-
-
-

ASP(2)
-5.15
0.0005069957
-1.01365e-005
0.0000008523273

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	4^th Order Aspheric Coefficient
R	Radius of Curvature	A₆	6^th Order Aspheric Coefficient
k	Conic Constant	A₈	8^th Order Aspheric Coefficient
A₂	2^nd Order Aspheric Coefficient	A_n	n^th Order Aspheric Coefficient