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TechSpec Germanium IR Lenses

Photonics.com
Oct 2010
Edmund Optics Inc.Request Info
 
BARRINGTON, N.J., Oct. 29, 2010 — Edmund Optics has introduced its TechSpec germanium infrared aspheric lenses, available in standard and hybrid configurations.

The hybrid versions provide diffraction-limited focusing performance at any wavelength over the 3- to 5-µm region and near-diffraction-limited performance when used over the entire 3- to 5-µm range. Color-corrected for 3 to 5 µm, each hybrid aspheric lens is coated for >95% transmission and <0.5% reflection, offering efficiency and reduced costs of IR illumination. The hybrid aspheric lenses are suited for integration into imaging applications, Fourier transform infrared spectrometers and any mid-wave IR application using a broadband light source. The versatile lenses are offered in a 25-mm diameter with focal lengths ranging from 12.5 to 100 mm, with custom designs and coating options available upon request.

The standard germanium IR aspheric lenses, available with a variety of coating options, provide diffraction-limited focusing performance over a broad spectral range in the mid- and long-wave IR regions. Each is available uncoated or with broadband-antireflection (BBAR) coating options for greatest flexibility. Because uncoated germanium has a transmission of <50%, users should consider adding custom antireflection coatings when specifying an uncoated lens. Every BBAR-coated lens features >95% transmission and <0.5% reflection, which is suitable for integration into a variety of diverse OEM applications.

The standard versions are available in a 25-mm-diameter size, with focal lengths ranging from 12.5 to 75 mm, in uncoated, 3- to 5-µm coating and 8- to 12-µm coating versions. They are suitable for monochromatic light sources such as quantum cascade lasers, and they offer a high-performance alternative to standard planoconvex lenses.

Both versions are in-stock and available for immediate delivery.


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Photonics Buyers' Guide
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AmericasasphericBBARbroadband-antireflectioncoatedcoatingscolor-correcteddiffraction-limitedEdmund OpticsFourier transform infrared spectrometersFTIRgermaniumhybridinfraredIRlenseslong-wave IRmid-wave IRmonochromatic light sourcesnear-diffraction-limitedOEMopticsProductsQCLquantum cascade lasersspectroscopystandardTechspecuncoated

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