LENS HORIZON 



H = 1 5 2m 



PH, = 5 5mm 



f = 1 00mm 



M = 3 . 5X 



tan 6 y = PH 1 / (f -M) = .15714 



0, =89 3' 



D = . 03^/H = . 37° 

 = 9 . 30 ° 



PH = f -tanJ-M - 5 7mm 

 K = f / {sine -cost ) = 627 



h = 



K) (H) [a-b; 



a (K-b) 



32m 



Figure D-4. — Oblique Mensurations 

 68 



