![](/images/new-backgrounds/1142886/14288629x1.webp)
LaserSpeed
System Overview
κ
Side View
Material Surface
Resulting Electrical Signal with Frequency (f)
t
Measurement Region
Top View
d
Material Movement
Fringe distance (d) is a function of laser wavelength (λ) and beam angle (κ):
Period is the inverse of frequency:
Velocity is distance divided over time:
Velocity is integrated to find Length
d = λ 2sinκ
t = 1f
v = dt
L = ∫0T v ⋅ dt
Part No. 93463 / Drawing No. | Page 15 of 221 | Revision A (Sep 2007) |