Method and apparatus for modulating a light beam

摘要: A modulator for modulating an incident beam of light, the comprising a plurality equally spaced-apart elements, each which includes light-reflective planar surface. The elements are arranged parallel to other with their surfaces other. means supporting in relation one another and moving particular ones relative others so that moved transit between first configuration wherein acts reflect light as plane mirror, second diffracts reflected therefrom. In operation remain both configurations. perpendicular spacing reflective respective is equal m/4 × wavelength m equals even whole number or zero when odd configuration.