Thorlabs N-BK7 A Coated Bi-Convex Optical Lens LB1909-A NEW Sealed (Best Offer!) 3045200 Fan cover only—no filter included

Fan cover only—no filter included

Model: Temperature Control Module

The imaging colorimeter is in good cosmetic condition

UL is a precision optical alignment tool used for inspecting and aligning fiber optic components and assemblies

Model: EV-S21A

Thorlabs N-BK7 A Coated Bi-Convex Optical Lens LB1909-A NEW Sealed (Best Offer!) 3045200 Fan cover only—no filter includedThis optical lens provides precise light manipulation, features a bi convex design and A coating, and is suitable for various laboratory and industrial applications requiring beam shaping or focusing. Brand: Thorlabs Model: N BK7 A Coated Bi Convex Optical Lens Model Number MPN: LB1909 A Diameter: 50. 8 mm Focal Length: 500. 0 mm Material: N BK7 Coating: A Coated Lens Type: Bi Convex The item is new and unused, sealed in the original manufacturers