Page 268 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition
P. 268
(a)
(b)
10.2 How it works 257
F
F
θ
F
F
f
f
D
f
f
F
FIGURE 10.10
f
(a) Focal lengths by various lens types (both convergent and divergent) as well as (b) depiction of the aperture (D) versus the focal length (f) converging upon focal point (F).
