The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.

Device configured to non-invasively perform tissue monitoring. The device can include at least two light emitting components and at least one photodiode configured to receive reflected light generated from the at least two light emitting components. The at least one photodiode is spaced apart from the at least two light emitting components. The device can include an analog-to-digital converter component configured to generate a digitized detected light signal based on data received from the at least one photodiode. The device can further include a processor configured to execute instructions to process the digitized signals. The device can included an ambient light blocking component configured to surround the at least two light emitting components and the at least one photodiode to prevent external light from entering a region bounded by the ambient light blocking component. The device can also include at least one filter mounted over the at least one photodiode.

An object information acquiring apparatus comprises an irradiating unit which irradiates light on an object; a holding member which includes a light-absorbing member whose optical characteristics with respect to irradiated light are known and which holds the object; a detector which detects acoustic waves generated by tissue in the object and the light-absorbing member due to light irradiation; and a computing unit which calculates optical characteristics of the tissue in the object and the light-absorbing member by using the detected acoustic waves and which corrects the optical characteristics of the tissue in the object by using the calculated optical characteristics of the light-absorbing member and the known optical characteristics.

An optical coupling efficiency detection assembly includes a first housing accommodating a beam splitter and a fiber port, a second housing accommodating a ferrule enclosing a monitoring fiber, and an attachment block attaching the first housing to the second housing to establish a parfocal arrangement among the beam splitter, the fiber port, and the ferrule. Further, an assembly method for the optical coupling efficiency detection assembly is disclosed. The assembly method may include providing a beam splitter and a fiber port in a first housing, providing a ferrule enclosing a monitoring fiber in a second housing, and attaching the second housing to the first housing via an attachment block to establish a parfocal arrangement among the beam splitter, the fiber port, and the ferrule.

In an embodiment a pulse sensor includes at least one light source configured to emit light in a direction of a blood-perfused tissue of a living being, at least one light detector including a light-sensitive surface configured to sense at least one part of a light scattered by the blood-perfused tissue, wherein the scattered light is modulated depending on a pulse of the living being and an optical concentrator arranged in a light path of the scattered light between the tissue and the light-sensitive surface of the light detector, the optical concentrator configured to concentrate the scattered light, wherein the optical concentrator has a first entry surface, through which the scattered light is able to enter the optical concentrator, and a first exit surface, through which the concentrated scattered light is able to exit from the optical concentrator toward the light-sensitive surface, the first exist surface being parallel to the first entry surface, wherein the optical concentrator is transparent to the scattered light, wherein the first entry surface is larger than the first exit surface and is larger than the light-sensitive surface of the light detector, wherein the optical concentrator is in optical contact with the light detector via the first exit surface, and wherein a sectional surface of the optical concentrator, perpendicular to the first entry surface and the first exit surface, is shaped trapezoidal.

A pulse photometry probe includes a holding member that includes a contact face which is to be in contact with living tissue of a patient, an emitter that is placed in the holding member, a detector that is placed in the holding member and detects light emitted from the emitter, and, a spacer that is disposed between the contact face and the emitter and has an opening, wherein an air layer defined by the opening is disposed between an emitting face of the emitter and the contact face.

An apparatus including a plurality of light sources configured to emit light for reflection from tissue of a user wearing the apparatus, at least one light detector configured to detect light that enters the light detector to produce a detected signal for a physiological measurement, and a light-conducting element configured to conduct light to the light detector, wherein the apparatus is configured to allow light reflected from the tissue of the user to enter the light-conducting element at a plurality of spatially separated locations.

The invention provides a monitoring device (1) for attachment to a stance of a subject. The device comprises a data collector (2) and a processor (3) as two separate parts which can be detachably joined such that physiological signals which are detected by the data collector can be transferred to the processor for signal processing and provision of monitoring data. At least one of the data collector and the processor comprises a transducer which can convert the physiological signal to a data signal which can be processed electronically. The data collector is adapted for adhesive contact with a skin surface, and may comprise an adapter (6) for the detachable attachment of the processor.

A measurement system is provided with an array of laser diodes with one or more Bragg reflectors. At least a portion of the light generated by the array is configured to penetrate tissue comprising skin. A detection system configured to: measure a phase shift, and a time-of-flight, of at least a portion of the light from the array of laser diodes reflected from the tissue relative to the portion of the light generated by the array; generate one or more images of the tissue; detect oxy- or deoxy-hemoglobin in the tissue; non-invasively measure blood in blood vessels within or below a dermis layer within the skin; measure one or more physiological parameters based at least in part on the non-invasively measured blood; and measure a variation in the blood or physiological parameter over a period of time.

The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.