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Quanhom Technology Co., LTD is a company engaged in the area of development and production of thermal infrared optics. The high precision product range includes infrared lenses assemblies of SWIR/MWIR/LWIR , eyepieces, infrared lens elements, etc.
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How does the long EFL with large optics capabilities affect the DRI?

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How does the long EFL with large optics capabilities affect the DRI?

Update Time:2021-04-30
The focal length determines the field of view (FOV) of the thermal imaging camera. The longer the focal length, the smaller the FOV, which translates into more pixels across a target at a fixed range (meaning, the target angle divided by the IFOV angle).