T
TWIBlogger
I am designing a simple inspection device for checking polarization of lenses. Basically, I need to check horizontal position, vertical position and then any polarizing shift +/- 5deg from vertical position.
So, the lens fixture has to be horizontal, loading of the lens must be horizontal. The rotational measuring device is done by hand, with a straight line indicating horizontal and vertical positions against a "printout" of a protractor.
My question is how to calibrate this device? Assuming I fixture everything at 90 degrees relative to each other, is there a need for calibration, or is this sort of a verification - like checking a tape measure?
The real murky part in my mind is checking the accuracy of +/- 5deg
Thanks for your help, Bryan
So, the lens fixture has to be horizontal, loading of the lens must be horizontal. The rotational measuring device is done by hand, with a straight line indicating horizontal and vertical positions against a "printout" of a protractor.
My question is how to calibrate this device? Assuming I fixture everything at 90 degrees relative to each other, is there a need for calibration, or is this sort of a verification - like checking a tape measure?
The real murky part in my mind is checking the accuracy of +/- 5deg
Thanks for your help, Bryan
Last edited by a moderator: