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StingRay Optics Ruby MWIR 3–5 µm lens featuring a yellow-green anti-reflective coated front element and red internal ring, set against a white background.

Ruby MWIR Lens Assemblies

The Ruby Series™ is our line of lenses with germanium optics, designed to balance performance and price across the achromatic operation 3–5 μm range.

Full Product Description
Wavelength:
3–5 μm
f/#:
f/2.3
Focal length:
13 mm, 25 mm, 100 mm, 200 mm, 50–250 mm
Image Diameter:
21 mm
Optical material:
Germanium
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Product description

This series is ideal for f/2.3, f/2.5, or f/4.0 cameras. All focal lengths include manual focus with lock and the IR industry's standard bayonet mount.

Achromatically correct over a range of 3–5 μm, Ruby lens systems offer a 1" cold shield height, an f/2.3 collecting aperture, and are suitable for use with up to 21 mm diagonal image formats. The assemblies incorporate germanium optical elements to support reliable MWIR imaging performance in rugged applications.

Key features

  • Manual focus lock
  • Achromatic for wavelengths from 3–5 µm
  • Germanium optics for MWIR performance

Specifications

NameValue
Wavelength3–5 μm
Spectral regionMWIR
f/#f/2.3
Focal length13 mm, 25 mm, 100 mm, 200 mm, 50–250 mm
Image Diameter21 mm
Optical materialGermanium

(Values for Guidance Only - refer to datasheet where available)