---

Lens Specifications

Design Wavelength	830 nm	Magnification	Infinite
Numerical Aperture	0.64	Window Thickness
Clear Aperture	3.60 mm	Laser Window Material / Index
Effective Focal Length	2.75 mm	Glass	D-ZLAF52LA
Working Distance	1.50 mm	Surface Quality	40-20 Scratch-Dig(Entire Bulk Material)

---

355392-B
C392TME-A

Vd number	40.73
CTE (10-6 / °C)	6.9
Thermo optic coefficient (10-6 / °C) (Δn/ΔT)	6.5

Surface R(mm) k A4 A6 A8 A10 A12	Side 1 - - - - - - -	Side 2 2.18 -1.276412000 0.008869159 -0.000030822 -0.000008569 -0.000003810 0.000000194

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