EDUCATIONAL-DEMONSTRATION APPARATUS FOR STUDYING OPTICAL PHENOMENA AND TEST OBJECT THEREFOR Russian patent published in 2015 - IPC G09B23/22 

FIELD: physics.

SUBSTANCE: laser emitter, a test object coated with diffraction structures and a screen for observing optical phenomena are mounted on an optical bench in series along an optical axis. The test object is mounted on the optical bench using an adjustment tool, which enables movement thereof in the vertical plane. The laser emitter is mounted on a cylindrical support which allows rotation thereof in the horizontal plane. The test object is in the form of a flat circle with radial-angular arrangement of diffraction structures thereon and is mounted in a holder which allows rotation about the optical axis to enable the positioning of the analysed diffraction structure. The test object comprises a substrate on which there are rows of diffraction structures and can be in the form of a flat circular plate made of glass with an opaque coating. The diffraction structures are deposited on the plate by photolithography in the form of at least two circular concentric rows and one at the centre.

EFFECT: broader functional capabilities, easier operation of the apparatus, high accuracy of adjusting the position of the analysed optical object, easier adjustment of the position of emitters and display devices.

17 cl, 6 dwg