Radius measurement of large aperture long-focal-length lens using computer-generated hologram
OPTICAL TECHNOLOGY AND MEASUREMENT FOR INDUSTRIAL APPLICATIONS CONFERENCE 2021(2021)
Abstract
We present a method of using computer-generated hologram (CGH) to measure the radius of curvature of large aperture long-focal-length lens. In this method, a large aperture transmission CGH is used as a transmission sphere to generate the test and reference wavefronts by means of diffraction. To verify the feasiblity of this method, a 450 mm x 450 mm transmission CGH is designed and fabricated for measuring the radius of 440 mm x 440 mm spatial filter lens. Experimental results and error analysis show that the CGH test method features high accuracy and good repeatability.
MoreTranslated text
Key words
radius measurement, large aperture, long-focal-length lens, long radius, computer-generated hologram
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined