with Gaussian intensity distribution, of 67010 nm
wavelength. The passband of the optical filter should match
this range if the light coming from the scene would incise
with a normal angle. However, the horizontal field of view
of the camera and the length of the projected beam onto the
strip surface make the angle of incidence of the laser stripe
reflected from the edges of the scene increase as much as
12 deg. Thus, the central wavelength of the interference
filter at normal incidence