Ring aspherometer for contact testing of aspherical surfaces in astronomical optics.
A ring shaped apparatus for testing aspherical surfaces is described. The ring has three supports situated at the points of the equilateral triangle and has a shifting measuring device with a probe working on the circumference around the triangle. It is possible to test concave surfaces as well as arbitrary ones. The accuracy of the aspherometer is determined to be 0.0001 mm.
Izvestiya Ordena Trudovogo Krasnogo Znameni Krymskoj Astrofizicheskoj Observatorii
- Pub Date:
- Optical Measuring Instruments;
- Surface Properties;
- Error Analysis;
- Ring Structures;
- Instrumentation and Photography;
- Optical Testing