"L-MICRO" OPTICS TRAINING APPLIANCE Russian patent published in 2007 - IPC G09B23/02 

FIELD: study of optical occurrences.

SUBSTANCE: elements for performing experiments are made with possible mounting on holders and include electric lamp, light diode switch, photo-diode indicator, photo-element, light filters, prisms, screen, universal lens holder, diffraction grating, mirror, polarizer. Holders have magnetic stripes on base and electric sockets on front side. Each holder is made in form of duct-shaped board. Internal hollow of duct is divided on extreme, central and middle transverse sections, provided with cylindrical branch pipes having through apertures. Branch pipes are positioned inside duct sections in rows. Middle sections are divided by walls transverse relatively to board - reinforcement plates, part of which is made truncated for one third of board height. Branch pipes of middle sections are positioned between truncated walls and made truncated for one third of duct height. Magnetic stripes are made in form of inserts held in niche formed by truncated walls and truncated branch pipes. Branch pipes of extreme and central sections have larger diameter than branch pipes of middle sections. Positioned between branch pipes in central section in transverse row are branch pipes with diameter, equal to diameter of truncated branch pipes.

EFFECT: increased comfort of usage.

6 dwg