Optics: measuring and testing – Photometers
Patent
1999-02-22
2000-08-29
Font, Frank G.
Optics: measuring and testing
Photometers
356 39, G01J 100
Patent
active
06111636&
ABSTRACT:
The application relates to a device for measuring the optical density of samples arranged in strips on a plate. The device comprises a measurement head (3) moving strip by strip in relation to the plate, said measurement head (3) including a light source (4) and a detector (5). Outside the strips, there is provided a transparent spot (9) or a light-proof spot (10), at which the light source intensity or the background signal can be measured either before or after the strip measurement. By employing the single-channel device according to the invention, it is possible to achieve virtually the same speed level as with a multichannel device. However, the device of the invention can be made remarkably simpler. One single-channel device can also be used for measuring several different plates.
REFERENCES:
patent: 4482251 (1984-11-01), Saylor
patent: 4580895 (1986-04-01), Patel
patent: 5112134 (1992-05-01), Chow et al.
Patent Abstracts of Japan; vol. 009, No. 259 (P-397), Oct. 17, 1985; JP 60108731; Jun. 14, 1985 abstract.
International Search Report; EP 99 660039; Jan. 20, 2000; E. Navas Montero.
Font Frank G.
Labsystems Oy
Nguyen Tu T.
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