LASER INTERFERENTIAL REFRACTOMETER Russian patent published in 1996 - IPC

FIELD: measurement technology. SUBSTANCE: invention is related to laser interferential refractometers used in metrology. Input window 5 in three-channel refractometer is made common for vacuumed space 4 and test dish 7, three reflecting triple prisms 12, 13 and 14 are placed in one plane due to usage of bent supports of shaft. Self-fixing guides provide for pressing of mobile shaft 9 against hydraulic seals of dish unit. Miniature bellows are proposed to be used as hydraulic seals 19 and 20 of dish unit. EFFECT: facilitated manufacture, enhanced functional efficiency. 13 cl, 1 dwg