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Thorlabs BE04R Thorlabs BE04R — 4X Reflective Optical Beam Expander, 450 nm - 20 µm, 8-32 Mounting Plate
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Thorlabs

BE04R

Thorlabs BE04R — 4X Reflective Optical Beam Expander, 450 nm - 20 µm, 8-32 Mounting Plate

The Thorlabs BE04R is a 4X reflective optical beam expander designed to operate across a wavelength range of 450 nm to 20 µm and is equipped with an 8-32 mounting plate. Released on October 14, 2009, this component has a package weight of 0.93 lbs. Submit the exact part number, quantity, and application requirements to receive a formal quotation for this Thorlabs part.

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Why no listed price?

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.

Manufacturer
Thorlabs
Part number
BE04R
Product series
4X Reflective Optical Beam Expander, 450 nm - 20 µm, 8-32 Mounting Plate
Data verification
Manufacturer evidence reviewed

For a faster response, include quantity, condition, and delivery destination.

Exact part-number verificationTechnical properties are matched to BE04R.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Product Name
4X Reflective Optical Beam Expander, 450 nm - 20 µm, 8-32 Mounting Plate
Lifecycle Status
Refer to current manufacturer documentation
Release Date
October 14, 2009
Package Weight
0.93 lbs Each

Engineering context

Identification and RFQ Guidance

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.

What to include in your RFQ

Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against Thorlabs BE04R. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.