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The Ronchi test with an LCD grating

2001; Elsevier BV; Volume: 191; Issue: 3-6 Linguagem: Inglês

10.1016/s0030-4018(01)01141-5

1873-0310

Miguel Mora-González, Noé Alcalá Ochoa,

Optical Systems and Laser Technology

A low cost liquid crystal display (LCD) is used to perform the optical test of polished mirrors. The method is based on a typical Ronchi test configuration where the LCD acts like a grating and a phase shifting device.