Discussion Forum : Avionics
Question -
What is the IFOV for a collimating lens of diameter 100mm, the distance between the collimating lens and combiner glass=50mm, the distance between pilot eyes and combiner glass=400mm?
Answer: Option B
D=100MM, L=50+400 =450MM (SINCE L IS THE DISTANCE FROM THE OBSERVER TO THE COLLIMATING LENS)
IFOV = 2 X TAN-1 (D/2L) =2 X TAN-1( 100/2×450) = 12.6803° ≈ 12.6°
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D=100MM, L=50+400 =450MM (SINCE L IS THE DISTANCE FROM THE OBSERVER TO THE COLLIMATING LENS)
IFOV = 2 X TAN-1 (D/2L) =2 X TAN-1( 100/2×450) = 12.6803° ≈ 12.6°
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