TESTING CHAMBER Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: light source is used for lighting article 2 positioned inside chamber 1. Labyrinth openings 5 and 6 defined by corner 11 and 12 are made in walls 3 and 4 of the chamber. Flexible light guides are interposed between the corners. The ends of two cables of the flexible wave guides are positioned inside chamber 1, face article 2 and are taped into common bunch 7. The other ends are positioned out of the chamber and face the light source and observer. Corners 11 and 12 are mutually parallel, inclined to the chamber walls, and located at the same intervals which do not exceed 0.7 of the width of the corner shelf. EFFECT: improved design. 1 dwg