VN1810

Molded LWIR Lens FL 18.6mm f/1.0 (Model VN1810)

VN1810 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 18.6 mm, f/1.0 lens
    • - Use of diffractive‐aspheric lens
    • - Ultralight, wide‐angle, VGA and qVGA lens
  • Suitable for use with qVGA and qqVGA detectors and smaller
  • Applications and capabilities
    • - Thermal imaging and thermography
    • - Drone thermal imaging

Optical specifications

  • Focal length18.6 mm
  • Aperture-based f-numberf/1.0
  • Maximum image circle10.6 mm
  • Waveband8~12 um
  • Focus range3.6 m to infinity
  • Distortion< |1.53| % (640x480, 12 um)
  • Transmittance(average@waveband)> 95 % (AR coating)
  • > 90 % (DLC coating)
  • Relative illumination> 93%
  • Field of view (FOV)
    Sensor array Pixel size(um) FOV (deg)
    H V D
    640 x 512 12 23.5 18.8 30.1
    640 x 480 12 23.5 17.7 29.4
    384 x 288 17 20 15 25
    12 14.2 10.6 17.7
    320 x 240 17 16.7 12.5 20.8
    12 11.8 8.9 14.7

    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.