| 摘要 |
A sensor head for non-invasive measuring of blood filling of biological tissue comprises a cylindrical body, cylindrical nozzle-aperture, optical fiber, photocurrent preamplifier, optical-electrical connection cable with locking, internal aperture, optical disc, annular photodiode, directional and protective projections of the cylindrical body, and cylindrical body has an aperture to fit the opto-electrical connecting cable with locking and optical fiber, the cylindrical nozzle-diaphragm is attached to the outer surface of the cylindrical body from its lower end, the inner aperture, optical disc, annular photodiode, directional and protective projections of cylindrical body are placed at its lower end, internal diaphragm is attached to directional projection with the possibility of its easy replacement, optical disc, annular photodiode, photocurrent preamplifier are placed in series above it and their input is connected to the output of the ring photodiode and photocurrent preamplifier output is connected through an aperture to the opto-electrical cable. The technical result: reduced consumption of optical power of probe radiation by reducing consumption of back-scattered radiation, technology for manufacturing of receiver box is simplified by replacing focusing cone by optical disc and ring photodiode, the length of sensor head is decreased, the possibility to change the parameters of the optical window is simplified during operation by replacing the internal diaphragm to another one with different diameter, which is made with the possibility of easy replacement. |
