INTERFEROMETER MEASURING DEVICE (VARIANTS) Russian patent published in 2007 - IPC G01B9/02 G01B11/06 

FIELD: interferometers.

SUBSTANCE: interferometer measuring device contains low coherence and high coherence light emitters, optically connected by means of light divider to input of two-beam interferometer, which is made with possible periodical modulation of optical difference of its rays path difference. Output of two-ray interferometer by means of another light divider is connected optically to first photo-receiver and to fiber light divider, having M outputs. To M-1 outputs of fiber light divider, M-1 fiber-optic transmitting lines are connected, each one of which is made with a measuring optical head on one end and with fiber distributor of Y-like form on other end, while one of shoulders of Y-like form fiber distributor is optically connected to corresponding photo-detector, and its other shoulder is connected to corresponding output of fiber light divider. Also, device contains a block for generating signals, which correspond to limits of range of measurements of thickness of transparent products, which is connected to M output of fiber light divider and made in form of two Fabri-Perrot standards, positioned serially along the axis in front of the appropriate photo-receiver.

EFFECT: expanded area of application of interferometer measuring device due to ensured durational, continuous multi-positional control of physical parameters of transparent materials and products at various stages of their production.

2 cl, 7 dwg