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 BE05-10-A is a discontinued optical beam expander featuring a 5X to 10X zoom capability and an antireflection coating for 400 to 650 nm, originally released on November 23, 2009, and discontinued on September 28, 2022. This component has been officially replaced by the ZBE4A model according to the manufacturer's records. Submit your exact part number, quantity, and application requirements to request a quote for remaining availability.
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 BE05-10-A. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.