VN8.111

Molded LWIR Lens FL 8.1mm f/1.1 (Model VN8.111)

VN8.111 product image
  • Precision molded LWIR lenses using chalcogenide glass
    • - High-volume, cost effective manufacturing
    • - Optimized for the 8~12 um wavelength range
  • High performance LWIR lenses
    • - FL 8.1 mm, f/1.1 lens
    • - Use of diffractive‐aspheric lens
    • - Ultralight, wide‐angle, passively athermalized LWIR lens
  • Suitable for use with qVGA and qqVGA detectors and smaller
  • Applications and capabilities
    • - Thermal imaging and thermography
    • - Automotive vision enhancement

Optical specifications

  • Focal length8.09 mm
  • Aperture-based f-numberf/1.14
  • Maximum image circle8.56 mm
  • Waveband8~12 um
  • Focus range0.8 m to infinity
  • Distortion< |19.5| % (384x288, 17 um)
  • Transmittance(average@waveband)> 95 % (AR coating)
  • > 90 % (DLC coating)
  • Relative illumination> 91.4%
  • Field of view (FOV)
    Sensor array Pixel size(um) FOV (deg)
    H V D
    384 x 288 17 49 36 63.3
    12 33.8 25.2 42.8
    320 x 240 17 40.2 29.8 51.3
    12 28 20.9 35.3
    206 x 156 25 19.3 14.4 24.1

    Note : Each lens is optimized for a specific detector format represented by bold values.
    This table shows values for other compatible detector formats with non‐optimal performance.