Introduction

• 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 6.4 mm, f/1.2 lens
  • - Use of diffractive-aspheric lens
  • - Ultralight, wide‐angle, passively athermalized LWIR lens
• Applications and capabilities
  • - Thermal imaging and thermography

Optical specifications

• Focal length6.406 mm
• Aperture-based f-numberf/1.28
• Waveband8~12 um
• Focus range1 m to infinity
• Distortion< ‐2.6 % (206x156, 12 um)
• Transmittance(average@waveband)> 95 % (AR coating)
• > 90 % (DLC coating)
• Relative illumination> 98.1%
• Field of view (FOV)

  Sensor array	Pixel size(um)	FOV (deg)
  		H	V	D
  206 x 156	12	22.2	16.8	28
  160 x 120	12	17.2	21.5	42.2
  80 x 60	25	18	13.4	22.5

  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.