Optical detection device with reduced light throughput oscillations
First Claim
1. A method to perform a setting of an optical detection device, which detection device comprises a first and a second waveguide, each having an end face adapted for emitting and receiving light and facing each other in a distance d, and an envelope at least partially enveloping the distance d and being adapted for at least partially reflecting and guiding emitted light between the end faces, the method comprising:
- measuring a transmission characteristic of a fluid between the waveguides while varying the distance d, wherein the transmission characteristic shows at least one of a minimum and a plateau, andsetting the distance d to a working point in said minimum or plateau,wherein a variation of the transmission around the working point is low, accordingly a derivation of the measured transmission characteristic is low.
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Abstract
A method is provided to perform an optimized setting of an optical detection device, with the detection device comprising a first and a second waveguide, each having an end face adapted for emitting and receiving light and facing each other in a distance d, and an envelope which at least partially envelopes said distance d and which is adapted for at least partially guiding light between the end sides. The method comprises measuring of a transmission characteristic between the waveguides, which transmission characteristic shows at least one of a minimum and a plateau and which is dependent on the distance d, and setting of the distance d to a working point on the distance d in the minimum or plateau, wherein the variation of the transmission around the working point is low, accordingly the derivation of the measured transmission characteristic is low.
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Citations
17 Claims
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1. A method to perform a setting of an optical detection device, which detection device comprises a first and a second waveguide, each having an end face adapted for emitting and receiving light and facing each other in a distance d, and an envelope at least partially enveloping the distance d and being adapted for at least partially reflecting and guiding emitted light between the end faces, the method comprising:
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measuring a transmission characteristic of a fluid between the waveguides while varying the distance d, wherein the transmission characteristic shows at least one of a minimum and a plateau, and setting the distance d to a working point in said minimum or plateau, wherein a variation of the transmission around the working point is low, accordingly a derivation of the measured transmission characteristic is low. - View Dependent Claims (2, 3)
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4. A detection device adapted to perform optical analysis, comprising:
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a first and a second waveguide, each having an end face adapted for emitting and receiving light and facing each other in a distance d, and an envelope at least partially enveloping the distance d and being adapted for at least partially reflecting and guiding emitted light between the end faces, wherein the distance d is set, based on a previously derived measurement of a transmission characteristic of a fluid between the waveguides while varying the distance d, which transmission characteristic showing at least one of a minimum and a plateau, to a working point within the minimum or the plateau, wherein the variation of the transmission around the working point is low, accordingly the derivation of the measured transmission characteristic is low. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A detection device adapted to perform optical analysis, comprising:
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a first and a second waveguide, each having an end face adapted for emitting and receiving light and facing each other in a distance d, and an envelope at least partially enveloping the distance d and being adapted for at least partially guiding light between the end faces, wherein the envelope has an inner and an outer surface providing a plurality of refractive angles and reflection angles, at least one of the inner and an outer surface having a pattern for increasing said plurality of refractive angles and said plurality reflection angles, thereby providing a homogeneous illumination of the distance d wherein the distance d is set, based on a previously derived measurement of a transmission characteristic relying on said refractive angles and said reflection angles, which transmission characteristic shows at least one of a minimum and a plateau and being dependent on the distance d, to a working point of the distance d, wherein the variation of the transmission around the working point is low, accordingly the derivation of the measured transmission characteristic is low. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification