Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1990-10-31
1992-05-26
Rosenberger, Richard A.
Optics: measuring and testing
By particle light scattering
With photocell detection
356336, G01N 1502, G01N 2100
Patent
active
051161257
ABSTRACT:
A fertility analyzer includes a laser beam impinging on a sperm sample in a capiliary, a first optical system including at least a first lens focusing the laser beam in the sample, and a second optical system including at least a second lens, a first diaphragm determining the volume element of the sample to be monitored, a second diaphragm determining the space angle of scattered light and a light intensity detecter. A signal processing device stores the signals from the light detector during a predetermined time separately for beams outgoing from the sperm sample in at least two chosen directions and computes at least two features having relation to the fertility of the sperm sample. A separator included in the combination of the first and second optical systems sorts out a determinable small section of the beam outgoing from the sperm sample in a direction lying in a plane approximately parallel to a plane including the capillary.
REFERENCES:
patent: 3819270 (1974-06-01), Hirschfeld
patent: 4601578 (1986-07-01), Woolhouse et al.
patent: 4648715 (1987-03-01), Ford et al.
patent: 4676641 (1987-06-01), Bott
patent: 4896966 (1990-01-01), Boisseau et al.
patent: 4896967 (1990-01-01), Douglas-Hamilton et al.
Rotational and Translational Swimming of Human Spermatozoa: A Dynamic Laser Light Scattering Sturdy, Rigler & Thyberg (1984).
Translational and Rotational Swimming of Human Spermatozoa: Maxwell Speed Distribution in the Analysis of Dynamic Laser Light Scattering, by Rigler & Thyberg (1986).
Biophos Medical AB
Pham Hoa
Rosenberger Richard A.
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