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 355397-B is an unmounted aspheric lens featuring a focal length of 11.0 mm, a numerical aperture of 0.30, and a working distance of 9.3 mm, with an anti-reflective coating optimized for the 600 to 1050 nm wavelength range. Released on April 27, 2020, each unit has a package weight of 0.04 lbs. Submit the exact part number, quantity, and application requirements to request a quote.
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 355397-B. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.