Analysis and optimization of a total integrating scatter measuring unit based on a photodiode integrator

Romuald Synak

doi:10.1117/1.OE.51.11.113601

Abstract

An analysis of a novel unit destined for measuring roughness of smooth and isotropic surfaces as well optimization of its parameters has been presented. The unit is functioning on the measurement of the total integrated scatter parameter using a flat photodiode integrator rather than a conventional optical sphere or hemisphere. By that means, one can obtain much less expensive and smaller instruments than the traditional ones. Unfortunately, a decrease of the integrator dimensions could reduce its spatial frequency bandwidth causing measurement errors. Therefore, an analysis of this factor utilizing the results of the Rayleigh-Rice vector perturbation theory has been performed. For the case when smooth surfaces are investigated, the lower limit of the angle range is particularly critical and should be diminished as much as possible. This is in contradiction with the demand of a broader upper limit to have a greater roughness measuring range. Therefore, a way of optimization of unit parameters has also been described. Results of experiments concerning the validity of assumptions confirmed in the analysis as well as results of roughness measurements obtained using a tentative measuring unit are also given.

Citation Download Citation

Romuald Synak, Romuald Synak, } "Analysis and optimization of a total integrating scatter measuring unit based on a photodiode integrator," Optical Engineering 51(11), 113601 (1 November 2012). https://doi.org/10.1117/1.OE.51.11.113601 . Submission:

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years