Improved optical detection system for apparatus to culture...

Details Improved optical detection system for apparatus to culture... Improved optical detection system for apparatus to culture...

C - Chemistry, Metallurgy

12

M

C12M 1/34 (2006.01) C12Q 1/04 (2006.01) G01N 21/25 (2006.01) G01N 21/77 (2006.01) G01N 35/00 (2006.01)

Patent

CA 2138254

An improved optical system for use in an instrument for culturing and detecting the presence of microorgan- isms in human tissue specimens is dis- closed. The improved optical detec- tion system is designed to reduce un- wanted noise by substantially blocking all light other than light from a sensor positioned on an inside wall of a culture bottle from reaching the photodetector. A control circuit providing a "lock-in" detection system designed to reduce un- wanted noise is also disclosed. The de- tection system is capable of rapidly and automatically detecting whether a spec- imen bottle has been inserted into the instrument.

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