MECHANISM TO MOVE OPTICAL ELEMENT Russian patent published in 1995 - IPC

FIELD: opticomechanical industry. SUBSTANCE: mechanism to move optical element includes screw, which two sections have thread matched to two nuts one being joined to mount 5 of optical element the other one to lever 5 via pins 6 and 7 which allows length of pin 6 to be shortened. Lever 5 is anchored on case 9 of lens with the aid of half-axles 10 and contacts mount 4 of optical element via pins 11. Inserts with spherical internal surfaces are installed between pins 6, 7, 11 and contact surfaces of mount 4 of optical element and lever 5. Mount 4 of optical element is set up in center of case 9 of lens on three rollers. EFFECT: improved focusing efficiency and reliability. 2 dwg