About me: The working principle and role of laser field
mirror Generally speaking, the laser beam in the
marking system will produce off-axis deflection
after passing through the focusing lens system,
which will result in abnormal images or
aberrations on the marking surface relative to the
ideal plane. Flat field focusing mirror, also
known as field mirror, f-theta focusing mirror, is
a professional lens system, the purpose of the
laser beam in the entire marking plane to form a
uniform size of the focused
