Small Laser Displacement Sensors CD33 Series

Small Laser Displacement Sensors CD33 Series

Specular reflection types
for measurements of specular and transparent objects.

Specular reflection types have been added to the line up to enable the measurement of transparent objects such as glass workpiece, as well as specular objects such as wafers, etc. This means that transparent and specular objects that were diffi cult to measure using diffuse-refl ective types can now be measured with stability.

Thickness measurements also possible

• When using a specular reflection type to measure transparent objects, not only surface displacement, but also thickness can be measured. As shown below, when the laser light is emitted at an angle, light reflected from both the front and rear surfaces of the glass are received by receiver element. Thickness measurements are possible by measuring between the peaks of these reflected light forms.