Automatic phase-shifting Ronchi tester with a square Ronchi ruling

Jorge Castro-Ramos; Jose Sasian

doi:10.1117/12.558939

2 August 2004 Automatic phase-shifting Ronchi tester with a square Ronchi ruling

Jorge Castro-Ramos, Jose Sasian

Proceedings Volume 5532, Interferometry XII: Applications; (2004) https://doi.org/10.1117/12.558939
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

The Ronchi test is one of the simplest and most effective methods used for evaluating and measuring aberrations. Employed in optical shops, its use is limited to qualitative analysis. Few methods in use today produce quantitative results. What follows are explained both the development and the guidelines for manufacturing a Ronchi tester based on quantitative analysis which also has the advantage to receive automatic input and output of data. In order to achieve this goal, phase shifting interferometry and a square Ronchi ruling with a variable intensity LED were used. It is important to note that with the set up described only one movement of the motor which supports the square ruling is needed to simultaneously obtain both the X and Y components of the wave front aberration.

Citation Download Citation

Jorge Castro-Ramos and Jose Sasian "Automatic phase-shifting Ronchi tester with a square Ronchi ruling", Proc. SPIE 5532, Interferometry XII: Applications, (2 August 2004); https://doi.org/10.1117/12.558939

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