| 摘要 |
FIELD: optical engineering; measurement engineering. ^ SUBSTANCE: polarization interferometer for measuring spatial changes in refractivity of transparent media has lighting unit mounted in series with interference-polarization unit composed of polarizer, analyzer and interfering beams unit disposed between polarizer and analyzer. Interferometer also has photo-registering device. As lighting unit the unit is chosen which forms parallel beam. Interfering beam splitter of interference-polarization unit is made in form of member with flat-parallel working faces. The member is cut of single-axis crystal for inclination at two mutually perpendicular planes, which are in turn perpendicular to plane of transmission cross-section of interferometer's optical system. ^ EFFECT: simple and reliable measurement of changes in refractivity of transparent media. ^ 4 cl, 2 dwg |
