Accurate instrumetation for optical measurement of samples
First Claim
1. An optical measurement instrument for measuring samples, comprising an illumination source (211) for forming an excitation beam, a detector (231a) for detecting an emission beam, an interface (218, 223, 233a, 233b, 238) for a changeable optical module (240) with a purpose of directing the excitation beam received from the illumination source (211) into the sample (281) and/or directing an emission beam received from the sample (281) to a detector (231 a), characterized in that the interface further comprises means (238, 233b) for adapting to at least one of said beams being transmitted through an aperture located on a wall of an optical module.
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Abstract
The present invention relates generally to the field of biochemical laboratory. More particularly the invention relates to the improved and more accurate instrumental features of equipment used as e.g. fluorometers, photometers and luminometers. The object of the invention is achieved by providing an optical measurement instrument where there is an interface (218, 223, 233a, 233b, 238) for a changeable optical module (240), and excitation and/or emission beam is guided through an aperture of the optical module. This allows performing various types of measurements by changing an optical module without a problem lenses becoming unclean due to manual handling of the optical modules. The invention also makes possible to achieve an accurate measurement location and area within a sample.
64 Citations
51 Claims
- 1. An optical measurement instrument for measuring samples, comprising an illumination source (211) for forming an excitation beam, a detector (231a) for detecting an emission beam, an interface (218, 223, 233a, 233b, 238) for a changeable optical module (240) with a purpose of directing the excitation beam received from the illumination source (211) into the sample (281) and/or directing an emission beam received from the sample (281) to a detector (231 a), characterized in that the interface further comprises means (238, 233b) for adapting to at least one of said beams being transmitted through an aperture located on a wall of an optical module.
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20. A changeable optical module (1340, 1850) for an optical measurement instrument, the module comprising
means (1346, 1856) for receiving an excitation beam from an illumination source and means (1341, 1348, 1851, 1858) for directing the excitation beam to a sample, and/or means (1348) for receiving an emission beam from the sample and means (1341, 1344, 1851, 1854) for outputting the emission beam received from the sample to a detector, characterized in that the means for receiving and/or the means for outputting comprise(s) an aperture on an outer wall of the optical module module.
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42. A process for measurement of samples with an optical measurement instrument comprising at least one measurement head, possible means for providing excitation of a sample and means for measuring an emission from the sample, the process comprising the phases of
selecting a measurement mode (11), selecting at least one changeable optical module for a measurement head, the optical module guiding the excitation beam from an illumination source into the sample (20, 21) and/or guiding at least one emission beam from a sample into at least one detector (20, 21), performing the selected optical measurement (23-25), characterized in that in the step of selecting the optical module, a kind of optical module is selected, which has an aperture for receiving an excitation beam and/or for outputting an emission beam.
- 43. A method for optical measurement of samples comprising the step of transmitting excitation/emission beam between the sample and a measurement head of an optical instrument, comprising transmitting said beam through an optical module of the measurement head, characterized in that said beam is guided through an aperture located on an outer wall of the optical module.
Specification