Wallac Oy

Janne Salonen

Raimo Harju

Markku Ojala

Jarmo Nurmi

Timo Salminen

Aarne Heinonen

Markku Varjonen

Juha Karunen

Ilari Torsti

Hannu Turunen

Screen plate () of an imaging measuring instrument, intended for use in absorption measurement of samples relating to the fields of biochemistry and medicine. The screen plate comprises a plate () made of light-absorbing material, such as darkened or colored glass, preferably gray glass. One surface of the screen plate is provided with a scattering and/or fluorescent surface layer () and the opposite side is provided with an anti-reflection film (). Instead of a scattering and/or fluorescent surface layer, the absorbing plate may also have both scattering and/or fluorescent properties.

Screen plate of an imaging measuring instrument

The present invention relates generally to the field of biochemical laboratory instrumentation for different applications of measuring properties of samples on e.g. microtitration plates and corresponding sample supports. The object of the invention is achieved by providing an optical measurement instrument for photoluminescence, chemiluminescence and/or AlphaScreen measurements wherein different optical modules are used for alternative measurements. The excitation pulses for the alternative measurements are guided via two different routes to optical modules, the routes reaching the module in different angles. This way it is possible to use alternative radiation sources without optical switches and without changing the optical system. The object of the invention is further achieved by providing an additional lens in the optical module when a thermo plate is used. This way it is possible to achieve a correct optical focus in different measurement modes not depending on the use of the thermo plate.

Versatile instrumentation for optical measurement of samples

The invention applies to the binning procedure of data, which is measured with a CCD (Charge-Coupled Device) sensor unit. There is created a solution for measurement of radiation, in which a good signal-to-noise value is achieved, and still it is possible to exploit standard CCD units. This is achieved by selecting the binning areas on the basis of position of defected pixels () in a CCD unit (). One idea is to determine the locations of the defected pixels and to use this information for determining pixel groups that form the super pixels. In a preferable embodiment super pixels (A&#x2013;A, B&#x2013;B, C&#x2013;C, D&#x2013;D, E&#x2013;E) are first determined using a selected binning factor, and those super pixels that would be affected by defected pixels are then reduced into one or more smaller super pixels (B&#x2013;E, B&#x2013;E, C&#x2013;E), which are not affected by the defects.

Method and arrangement for processing measurement data

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Mynämäki, Finland

Janne Salonen