Journal ArticleDOI
Null-screen testing of fast convex aspheric surfaces.
Reads0
Chats0
TLDR
A method for null-testing fast convex aspheric optical surfaces is presented, using a cylindrical screen with a set of lines drawn on it in such a way that its image, which is formed by reflection on a perfect surface, yields a perfect square grid.Abstract:
A method for null-testing fast convex aspheric optical surfaces is presented The method consists of using a cylindrical screen with a set of lines drawn on it in such a way that its image, which is formed by reflection on a perfect surface, yields a perfect square grid Departures from this geometry are due to imperfections of the surface, allowing one to know if the surface is close to the design shape Tests conducted with a full hemisphere and with the parabolic surface of a lens show the feasibility of the method Numerical simulations show that it is possible to detect surface departures as small as 5 micromread more
Citations
More filters
Journal ArticleDOI
Software configurable optical test system: a computerized reverse Hartmann test
TL;DR: Experimental results show that the SCOTS test can be implemented without complex calibration for many applications by taking the geometric advantage of working near the center curvature of the test part, and can achieve measurement accuracy comparable with interferometric methods.
Journal ArticleDOI
A survey of methods for the evaluation of reflective solar concentrator optics
Camilo A. Arancibia-Bulnes,Manuel I. Peña-Cruz,Amaia Mutuberria,Rufino Díaz-Uribe,Marcelino Sánchez-González +4 more
TL;DR: A review of the optical characterization techniques that have been developed for solar concentrators is presented in this paper, where a brief description of the operation and methodology of each technique is also discussed, and a classification of the different techniques in families according to their underlying principles of operation is proposed.
Journal ArticleDOI
Medium-precision null-screen testing of off-axis parabolic mirrors for segmented primary telescope optics: the large millimeter telescope.
TL;DR: The feasibility of using null screens for testing the segments of a parabolic segmented telescope mirror for the Large Millimeter Telescope (LMT) is analyzed and an algorithm for designing the null screen forTesting the off-axis segments of conic surfaces is described.
Journal ArticleDOI
Testing fast aspheric concave surfaces with a cylindrical null screen
TL;DR: A noncontact test procedure to obtain the shape of fast concave surfaces is described and the cylindrical null screen design and the surface evaluation algorithm are presented.
Optical Shop Testing
TL;DR: The optical shop testing is universally compatible with any devices to read and is available in the book collection an online access to it is set as public so you can download it instantly.
References
More filters
Journal ArticleDOI
Medium-precision null-screen testing of off-axis parabolic mirrors for segmented primary telescope optics: the large millimeter telescope.
TL;DR: The feasibility of using null screens for testing the segments of a parabolic segmented telescope mirror for the Large Millimeter Telescope (LMT) is analyzed and an algorithm for designing the null screen forTesting the off-axis segments of conic surfaces is described.
Journal ArticleDOI
Interferometric characterization of full spheres: data reduction techniques.
George N. Lawrence,R. D. Day +1 more
TL;DR: Numerical procedures for data reduction of full spheres from interferometric data taken at various positions around the surface of the sphere, using practical f/No.
Journal ArticleDOI
Cylindrical lenses: testing and radius of curvature measurement.
J. Rufino Diaz-Uribe,J. Pedraza-Contreras,Octavio Cardona-Nunez,Alberto Cordero-Dávila,Alejandro Cornejo-Rodriguez +4 more
TL;DR: Using a technique that was previously developed for measuring the radius of curvature of spherical surfaces, an alternative method for testing cylindrical as well as toric lenses is presented.