Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Thorlabs
The Thorlabs 354140-AB is an unmounted aspheric lens featuring a focal length of 1.5 mm, a numerical aperture of 0.58, a working distance of 0.8 mm, and an antireflective coating for 400 to 1100 nm. This component has a package weight of 0.04 lbs each and a release date of April 7, 2026, with its lifecycle status available in current manufacturer documentation. Submit the exact part number, quantity, and application requirements to request a quote.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Thorlabs references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Thorlabs 354140-AB. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.