A device to value objectively the concentration and motility of spermatozoa in a sample of seminal liquid with data processing and visible display of reliable results

摘要

The invention concerns a device to value objectively the concentration and motility of spermatozoa in a sample of seminal liquid and particularly a device by which in a short time and very simple manner the Doppler effect due to the division of a coherent beam of monochromatic light emitted by a He-Ne Laser of polarized type in two sub-beams of reference light and diffused light, respectively as well as the beating phenomenon due to the near frequency of same when rejoined together in a single beam, are exploited to draw out a signal to be processed by electronic way with visible display of the reliable results of the examination. An optical system is provided to reflect and/or refract the original beam and divide same, one of sub-beams having the original reference frequency while the other is incident on the sample and influenced by the characteristics thereof. A photodetector receives such rejoined beam and provides such signal to be processed. Both device and processor are relatively small sized to be easily transported and placed where the examination is to be carried out.