Defects
From Night Vision Wiki
(Redirected from Blemish)
Image intensifier tubes can have many different kinds of defects, which affect the image being produced.
Some defects are worse than others. Causes for defects include, but are not limited to:
- Imperfections of manufacturing
- Aging of the components
- Exposure to bright light (sometimes even when powered off)
- Humidity damage
- Mechanical shock damage
- Incorrect handling
A blemish describes an area of the image produced by the image intensifier remaining black or significantly darker than the rest of the image.
