390021-D

Name: Thorlabs 390021-D — f = 11.0 mm, numerical aperture = 0.18, Unmounted Geltech Aspheric Lens, AR: 1.8 - 3 µm
Brand: Thorlabs

Thorlabs 390021-D — f = 11.0 mm, numerical aperture = 0.18, Unmounted Geltech Aspheric Lens, AR: 1.8 - 3 µm

The Thorlabs 390021-D is an unmounted Geltech aspheric lens featuring an 11.0 mm focal length, a 0.18 numerical aperture, and an anti-reflective coating optimized for the 1.8 to 3 µm wavelength range. Released on February 21, 2012, this component was officially discontinued by the manufacturer on December 9, 2014. Submit the exact part number, quantity, and application requirements to request a quote for remaining availability.

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Manufacturer: Thorlabs
Part number: 390021-D
Product series: f = 11.0 mm, numerical aperture = 0.18, Unmounted Geltech Aspheric Lens, AR: 1.8 - 3 µm
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Technical Specifications

Product Name: f = 11.0 mm, numerical aperture = 0.18, Unmounted Geltech Aspheric Lens, AR: 1.8 - 3 µm
Lifecycle Status: Discontinued
390021-D was discontinued on December 9, 2014.: View its last web presentation.
Last Web Presentation: Open
Release Date: February 21, 2012
Discontinued Date: December 9, 2014

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.

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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 390021-D. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.