WebbThis test bench will be used for the testing of the secondary mirror and the Hindle sphere as well as R 0 and К. The test bench mechanical parts ensure reliable attachment of the secondary mirror and necessary adjustment movements to coincide axis of the mirror, Hindle sphere and Twyman-Green interferometer. Webbdivergers used in the tests. The actual Hindle test was done with an f/15 diverger because the f/number of the long conjugate is very slow, about f/25. The Hindle sphere however is reasonably fast and was tested using an f/2.5 diverger. Once the calibration is complete, average values for the residual astigmatism and spherical
Interference Test Procedures for Telescopic Mirrors
WebbLOFT, Large Optics Fabrication and Testing group with OEFF & RFCML ... Webb1 okt. 2014 · The testing system with two annuluses is shown in Fig. 1. The parameters of the auxiliary sphere could be obtained from our previous work [22], [23]. However, any sphere in the optical shop can be the auxiliary sphere if their specifications meet the requirements of testing system. In this work, there are two auxiliary spheres in our … aronia granatapfel wirkung
Hindle sphere Photonics Dictionary® Photonics Marketplace
WebbRonchi test 4.8.5. Hindle sphere test 4.8.4. Waineo null test . Probably the simplest way to null paraboloid is to use another reflecting surface. By placing point source of light at the infinity focus of a paraboloid, the collimated light output can be reflected back to it, to produce focus that can be nulled. WebbHindle Sphere is positioned at the near focus 12 of the convex surface under test. The diameter of the Hindle Sphere has to be greater than that of the test optic. Light from an interfer ometer 13 is brought to the null test point 14 at the far focus of the convex surface of the test optic. After reflections off the test optic 10 and the Hindle ... Webb21 mars 2016 · The test setup is a spherical wave Fizeau with a small airgap between the test and reference surfaces. The convex test surface acts as a simple lens that ensures normal incidence over the test and reference surfaces. If the airgap is small the residual aberrations of the lens can be relatively large. With a 10mm airgap for example angular ... bamboo kendi hair oil