Even rough surfaces can be measured! How to measure an unpolished metal surface with an autocollimator?
This time, we would like to introduce
a method to realize “angle measurement of unpolished surfaces such as metals” using an autocollimator.
Normally, it is difficult to make accurate measurements with an autocollimator on unpolished metal surfaces because the laser beam is scattered.
However, a simple modification can solve this problem.
What is the method?
A thin, lightweight glass plate, such as cover glass, is sprayed on one side with water or oil to
“waterproof” the metal surface, creating an optically flat measurement surface.
This ensures that the laser beam is not scattered and has a stable reflective surface.
High-precision measurement with a laser autocollimator is
possible even on unpolished metal surfaces.
Please try this simple method of improving measurement accuracy without the need for special equipment at
.
If you are interested in trying out measurement on metal surfaces that you have given up on, please contact us at
. We have a demo unit with a glass plate and an ultra-compact tilt sensor available at
.
Regardless of the content of this article, if you have any questions about the topics you are having trouble with in precision measurement or about our other products
, please feel free to contact us at
from the Contact Us link below.