Flexible optical source for pulse oximetry
AssigneeKoninklijke Philips N.V.
InventorsWouter Herman PEETERS, Toeno VAN DER SAR, Egbertus Reinier JACOBS, Gilbert Martinus VERBEEK, Johannes Wilhelmus WEEKAMP
Life of this patent
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Abstract
An optical source for guiding light to a target of a patient includes at least one light source configured to emit red light and infrared light. The at least one light source is embedded within a light-conducting sheet. A photodistributor is spaced from the at least one light source. The photodistributor includes a light-emitting surface and at least one light-receiving surface optically coupled to the light-conducting sheet. The photodistributor is configured to discharge at least a portion of the emitted red light and at least a portion of the emitted infrared light into a target.
Claims20
An optical source for guiding light to a target of a patient, the optical source comprising:
- at least one light source configured to emit red light and infrared light, the at least one light source being embedded within a flexible light-conducting sheet;
- a flexible photodistributor spaced from the at least one light source, the photodistributor including a light-emitting surface and at least one light-receiving surface optically coupled to the light-conducting sheet, the photodistributor being configured to discharge at least a portion of the emitted red light and at least a portion of the emitted infrared light into a target.
A method for lighting a target with red and infrared light, the method comprising:
- positioning the optical source at least adjacent to the target;
- emitting each of red light and infrared light from at least one light source;
- guiding at least a portion of the red light and at least a portion of the infrared light along a flexible light-conducting sheet;
- and
- directing at least a portion of the red light and at least a portion of the infrared light into the target via a flexible light-emitting surface that abuts at least a portion of the target.
A optical source for guiding light to a target of a patient, the optical source comprising:
- at least one light source configured to emit red light and infrared light;
- a light-conducting sheet molded around at least a portion of the at least one light source, the light-conducting sheet being configured to guide at least a portion of emitted red light and at least a portion of emitted infrared light;
- a coating layer disposed on at least a portion of the light-conducting sheet, the coating layer being configured to reflect at least a portion of the emitted red light and at least a portion of the emitted infrared light and retain the emitted red light and infrared light in the light-conducting sheet;
- and
- an outlet disposed on a portion of the light-conducting sheet that is free from engagement with the coating layer, the outlet being surrounded by at least a portion of the coating layer, the outlet being configured to emit red light and infrared light towards a target.
Dependencies are inferred from the claim text.