Method and device for rendering cells observable with laser scan

Details Method and device for rendering cells observable with laser scan Method and device for rendering cells observable with laser scan

1997-09-24

1999-12-14

Au, Amelia

Image analysis

Applications

Biomedical applications

356338, G02B 2108, G06K 928, G01N 2100

Patent

active

060027886

ABSTRACT:
A laser scanning cytometer, used with forward light scatter measurements, is provided with a laterally extended, asymmetrically positioned (relative to a light blocking position) light blocker, positioned between a cell sample and a detector such as a photodiode. The light blocker is asymmetrically positioned, at the reference position (i.e., no specimen) to permit some light to pass by a first end thereof and wherein light scatter caused by a specimen cell passes the first end, with other light scatter being blocked by the extended light blocker at a second end. Contrast of light scatter detection is sufficient thereby to provide viewable images of cells by means of the laser scanning cytometer.

REFERENCES:
patent: 4887892 (1989-12-01), Bacus
patent: 5369037 (1994-11-01), Hansen

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