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 ACL1815-B is an Ø18 mm aspheric condenser lens featuring a 15 mm focal length, a 0.534 numerical aperture, and an anti-reflective coating optimized for the 650 to 1050 nm wavelength range. Released on December 2, 2009, this component was officially discontinued on July 13, 2015, and has been superseded by the ACL1815U-B model. Submit the exact part number, quantity, and application requirements to receive a quotation.
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 ACL1815-B. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.