Answer:
The field of view = 66.84°
Explanation:
given:
focal lenght = 15mm
width = 14mm
resolution = 5MP
for us to determine the image size of the square lens of width 14mm
we use Pythagoras theorem,
(diagonal)² = (14)² + (14)²
diagonal = √(392)
the diagonal of the squared camera sensor is the image size in vertical and horizontal.
hence,
image size = √(392) = 19.8mm
Since,
Field of view, fov = 2*arctan(image size/(focal lenght *2))
fov = 2*arctan(19.8/(15 x 2)) = 2*33.425
fov = 66.84°