Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Testing fast aspheric concave surfaces with a cylindrical null screen.

M Campos-García1, R Bolado-Gómez, R Díaz-Uribe

  • 1Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Apdo. Postal 70-186, México, 04510, DF México. manuel.campos@ccadet.unam.mx

Applied Optics
|February 22, 2008
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dynamic point shifting with null screens using three LCDs as targets for corneal topography.

Applied optics·2015
Same author

Polynomial fitting of interferograms with Gaussian errors on the fringe coordinates. II: Analytical study.

Applied optics·2010
Same author

Profile testing of spherical surfaces by laser deflectometry.

Applied optics·2010
Same author

Schlieren effect in Amici prisms.

Applied optics·2010
Same author

Comparison between toroidal and conic surfaces that best fit an off-axis conic section.

Applied optics·2010
Same author

Phase measurement for segmented optics with 1D diffraction patterns.

Optics express·2009
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

A novel noncontact method uses a cylindrical null screen to accurately measure the shape of fast concave surfaces. This technique is crucial for precise optical testing and manufacturing of complex mirror systems.

Area of Science:

  • Optical Engineering
  • Metrology
  • Surface Science

Background:

  • Accurate measurement of fast concave surfaces is challenging.
  • Existing methods may be contact-based or less precise for dynamic applications.

Purpose of the Study:

  • To present a noncontact test procedure for determining the shape of fast concave surfaces.
  • To introduce a cylindrical null screen and a surface evaluation algorithm.

Main Methods:

  • Design of a cylindrical null screen with a specifically curved grid.
  • Development of a surface evaluation algorithm based on reflected image analysis.
  • Noncontact optical testing of an elliptical mirror.

Main Results:

  • The proposed method successfully obtains the shape of fast concave surfaces.

Related Experiment Videos

  • Experimental validation was performed on a 164 mm diameter elliptical mirror (f/0.232).
  • The system yields a perfect square grid when reflecting off a perfect concave surface.

    • Conclusions:

    • The cylindrical null screen method offers a viable noncontact solution for concave surface metrology.
    • The presented algorithm and design are effective for testing high-speed optical components.
    • This technique enhances precision in optical testing and manufacturing.