Line scan camera

Input

Field of view (width)

W

Target resolution

R_x

Conveying speed

V

Required number of pixels

N

Required line rate

F

Line period

T

The line rate is worked out for square pixels — resolution along the travel direction equal to resolution across the width — from $\displaystyle F = \frac{V}{R}$ . Where the travel direction may be coarser, a lower rate will do.
The line period sets the upper limit on the camera's exposure time.
Conveyor speed varies, so on a real machine it is better to lock the line rate to an incremental encoder and trigger the camera externally.