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
Manufactured by Thorlabs, the 357775-B is an unmounted aspheric lens featuring an f of 4.0 mm, a numerical aperture of 0.60, a working distance of 1.9 mm, and an antireflection coating for 600 to 1050 nm. Released on September 7, 2022, this component has an individual package weight of 0.09 lbs, with lifecycle status available in current manufacturer documentation. Please 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 357775-B. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.