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Fixed-Pattern Noise (FPN)

  • Douglas Shaw

A faint hexagonal (honeycomb) pattern throughout the image area that most often occurs under highlights conditions. This pattern is inherent in the structure of the Microchannel plate and can be seen in virtually all Gen 2 and Gen 3 systems…

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Figure of Merit (FOM)

  • Douglas Shaw

Image Intensification tube specification designation, calculated on line pair per mm x signal to noise.

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Field-of-View

  • Douglas Shaw

The diameter of the imaged area when viewed through an optic

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Eye Relief

  • Douglas Shaw

The distance a person’s eyes must be from the last element of an eyepiece in order to achieve the optimal image area.

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Emission Point

  • Douglas Shaw

A steady or fluctuating pinpoint of bright light in the image area that does not go away when all light is blocked from the objective lens. The position of an emission point within the field of view will not move.…

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TNVC offices will be closed Noon December 24 - Jan 1st. Normal operations resume Jan 2nd. Expect shipping delays during this period
TNVC offices will be closed Noon December 24 - Jan 1st. Normal operations resume Jan 2nd. Expect shipping delays during this period