4.4 Confirming the Optical Axis
The optical axis of a measuring unit can be confirmed by the following methods.
ａ
Reception window
Red laser
beam
ｂ
4.4.1 Confirming with the laser beam
As shown on the right, the red laser beam is visible on a
piece of white paper placed on the reception window.
Adjust it so that the incidence of the laser beam is in the
center of the reception window.
The incidence should be in the center horizontally and at
the position where “a” is equal to “b” vertically. Make
adjustments to reduce such deviations, as shown in the
figures below, where (a) is the vertical deviation, (b) is the
horizontal deviation,(c) is the inclination of the laser beam.
Vertical adjustment
: a = b
(a): Vertical orientation (b): Horizontal orientation (c): Laser beam inclination
NOTE
The laser scanning range is defined by the distance between the emission unit and the
reception unit mounted on the standard support base. If the distance between the
emission unit and the reception unit is greater than standard, a slight machining error will
be amplified to the extent it disables the proper reception of the scanning beam. This
should be considered when designing a dedicated fixture.
No. 99MBC094A
4-4
