These refurbished units will come with Omni 6/ Omni 7 Refurbished Green L3 Tubes
 
All tubes will have No Guarantee on Spot Spec - No Spec Sheet - All Work - All Have Been Tested and Verified
 
Generation 3
 
Please note these will ship with a defense mechanisms nods pouch in OD Green.
 
OMNI Definition
Omni 6 and Omni 7 are both categories within the U.S. military’s Omni series of image intensifier tubes used in night vision devices, each generation representing a set of performance specifications that improve on previous ones.
Omni 6 Intensifier Tubes:
Introduced earlier than Omni 7.
 
Features enhancements over previous generations in terms of resolution, sensitivity to light, and signal-to-noise ratio, which measures the clarity of the image.
 
These improvements generally allow for better performance in low-light conditions compared to older models.
 
 
Omni 7 Intensifier Tubes:
The latest in the series following Omni 6.
 
Typically includes further improvements in all areas including even better resolution, lower noise, and greater light amplification capabilities.
 
May also include additional enhancements such as reduced halo effect (the bright ring seen around bright light sources), and improved performance under dynamic lighting conditions.
 
 
The evolution from Omni 6 to Omni 7 generally reflects ongoing advancements in night vision technology, aiming to provide clearer, more effective visual data for operations conducted in low light or night-time conditions. The specific improvements in each generation are aligned with the increasing demands of military and tactical operations, offering more reliable and durable devices.
Omni 6 vs Omni 7
The Figure of Merit (FOM) is a measure used to assess the overall performance of image intensifier tubes in night vision devices, and it is calculated by multiplying the resolution (in line pairs per millimeter) by the signal-to-noise ratio.
For U.S. military specifications:
Omni 6: The minimum Figure of Merit (FOM) requirement for Omni VI (or Omni 6) image intensifier tubes is typically around 1600. This means that these tubes needed to have either a higher resolution or a better signal-to-noise ratio or a balanced improvement in both to meet this minimum standard.
 
Omni 7: For Omni VII (or Omni 7), the standard was raised, typically requiring a minimum FOM of 1800. This increase reflects enhancements in technology allowing for better clarity, reduced noise, and overall more effective night vision capabilities.
 
 
These FOM thresholds indicate the minimum performance levels that intensifier tubes must meet or exceed to be considered suitable for military use under these specific Omni standards. Higher FOM values generally correlate with better performance in field conditions.