EP4515309A1 - Fernsensorik-vorrichtung - Google Patents
Fernsensorik-vorrichtungInfo
- Publication number
- EP4515309A1 EP4515309A1 EP23714514.9A EP23714514A EP4515309A1 EP 4515309 A1 EP4515309 A1 EP 4515309A1 EP 23714514 A EP23714514 A EP 23714514A EP 4515309 A1 EP4515309 A1 EP 4515309A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical waveguide
- light
- structural elements
- distal end
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
- A61B5/14552—Details of sensors specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
Definitions
- the invention relates to a remote sensor device comprising an optical waveguide with a proximal and a distal end, a primary light source arranged at the proximal end and a unit arranged at the distal end for receiving the primary light and emitting secondary light for retransmission to the proximal end.
- a light recording/emitting unit located at the distal end or Sensor unit can basically serve or contribute to the detection of various measured variables. For example, a measurement of magnetic fields, conductivities, temperatures, or oxygen saturations can be enabled or supported.
- Diameter or materials of the light-conducting cores or Surrounding jacket layers or properties of a bundle can be selected appropriately, for example a bundle of individual fibers or tubes with different refractive indices.
- certain general conditions must also be taken into account, such as flexibility and dimensions, although in some fields, especially in medical applications, miniaturization is often desirable.
- An object of the present invention is to provide a remote sensory device which is suitable for various distal light recording/emission or Sensor units one Optimization for the respective requirements is made possible and, in particular, miniaturization is permitted.
- the invention discloses a remote sensor device with a primary light source, an optical fiber and a light recording/emitting unit.
- the primary light source is set up to emit primary light with a first wavelength.
- the optical waveguide has a proximal end and a distal end and is set up to transmit the primary light from the proximal end to the distal end and / or to retransmit secondary light with a second wavelength caused by the primary light at the distal end to the proximal end.
- the light recording/emitting unit for receiving the primary light, in particular from the distal end, and for emitting the secondary light to the distal end of the optical waveguide.
- the secondary light receiver is in particular a detector for the secondary light and can be designed, for example, as a photodiode or, for example, as an imaging area detector.
- the optical waveguide has a numerical aperture which is greater than 0.4 or preferably greater than 0.5 or greater than 0.6. This advantageously enables a relatively high light collection efficiency with sometimes small dimensions, which enables the requirements for the light recording/emitting or sensor unit to be optimized for various areas of application.
- the indication that the optical waveguide has in particular a numerical aperture which is greater than 0.4 or preferably greater than 0.5 or greater than 0.6 therefore corresponds to the indication that the optical waveguide has an acceptance angle a which is greater is greater than 23.6° or preferably greater than 30.0° or greater than 36.9°.
- the primary light comprises at least a first wavelength and the secondary light comprises at least a second wavelength.
- the second wavelength is in particular a wavelength that deviates from the first wavelength.
- the first and the second wavelength are identical.
- the primary light like the secondary light, can of course also be designed as a spectrum.
- the light recording/emitting unit is designed in particular as a sensor unit and/or interaction unit, wherein the light recording/emitting unit emits the secondary light after or during the irradiation of the primary light and in this context enables a measurement variable to be determined.
- an interaction of the primary light also occurs outside the light recording/emitting unit, for example in a tissue to be examined.
- the light recording/emitting unit can also be designed to record secondary light generated outside the device and to deliver this in turn to the distal end of the optical waveguide or, if necessary. to be delivered as tertiary light to the distal end of the optical waveguide even after a further process.
- the optical waveguide can be designed as a so-called Anderson waveguide or TAL waveguide.
- the optical waveguide can be set up to transmit primary light and/or the secondary light in a transversely localized manner, in particular to transmit transversally with a spatial resolution, wherein the optical waveguide can also be designed as an image guide.
- a transversally localized transmission has the particular advantage that less excitation light or Primary light is necessary, if necessary. a lower scattered light background is enabled, and/or a minimization of the unused excitation light or primary light, which might otherwise be can be emitted into the sample space.
- excitation with primary light is thus made possible in a sometimes small area, while, on the other hand, secondary light can be recorded over a larger cross section.
- the optical waveguide can in particular comprise a large number of structural elements, each of which extends from the proximal to the distal end and proportionately over the cross section of the optical waveguide, such that a large number of cross-sectional regions are defined in the cross section of the waveguide, each of which corresponds to the cross section of a single structural element.
- Structural elements in particular their cross-sectional regions, are preferably arranged non-uniformly, such that a transversal Anderson localization of the primary light and/or the secondary light is effected.
- the light recording/emitting unit at the distal end of the optical waveguide comprises an excitable material which has an electronic structure which enables excitation by the primary light and decay with the release of secondary light.
- the excitation can preferably be made possible by primary light with a wavelength between 200nm and 20pm.
- the decay can preferably be made possible by emitting secondary light with a wavelength between 200nm and 20pm.
- the energetic states are preferably designed in such a way that an external measured variable can be measured using the received secondary light, for example an external measured variable from the group comprising a magnetic field, a conductivity, a temperature, an amount of substance or substance concentration, e.g. B. an oxygen saturation.
- an external measured variable from the group comprising a magnetic field, a conductivity, a temperature, an amount of substance or substance concentration, e.g. B. an oxygen saturation.
- the light recording/emitting unit at the distal end of the optical waveguide comprises a diamond with one or more nitrogen f-vacancy centers as an excitable material, which has an electronic structure which enables excitation by the primary light and decay while emitting secondary light.
- the excitation can preferably be done by primary light with a wavelength between 500nm and 560nm, e.g. B. 532nm, is possible.
- the decay can preferably be made possible by emitting secondary light with a wavelength between 600 nm and 800 nm.
- the energetic states are preferably designed in such a way that an external magnetic field can be measured with the aid of the received secondary light, in particular with the aid of a splitting and/or energy shift of spectral lines under the influence of the external magnetic field, preferably under irradiation of microwaves.
- the light absorption/emission unit, in particular the diamond can also include further or different centers, in particular as excitable material, for example one or more elements of the carbon-silicon group (the fourth main group).
- the light recording/emitting unit, in particular the diamond can comprise one or more of the following elements: Si, Ge, Sn, Pb.
- the excitation can, especially with Si, preferably also be carried out by primary light with a wavelength between 708nm and 768nm.
- the excitation can, especially with Ge, preferably also be carried out by primary light with a wavelength between 572nm and 632nm.
- the excitation can, especially with Sn, preferably also be carried out by primary light with a wavelength between 590nm and 650nm.
- the excitation can, especially with Pb, preferably also be carried out by primary light with a wavelength between 490nm and 550nm and/or between 522nm and 582nm.
- the optical waveguide preferably has a low intrinsic fluorescence at the wavelength of the primary light and/or the secondary light.
- excitation with primary light comprising more than one wavelength, in particular comprising a spectrum, can also be provided.
- a spatially limited recording of the primary light can be provided, in particular if the primary light is transmitted in a transversally localized manner. This can e.g. B. a gradient field measurement can be made possible.
- the light recording/emitting unit, the nitrogen vacancy center(s) and/or the excitable material can be arranged at the distal end of the optical waveguide in such a way that a spatially limited recording of the primary light, in particular a spatially limited excitation through the primary light, is made possible when a transversally localized transmission of primary light takes place through the optical waveguide.
- the light recording/emitting unit in particular the diamond, has a reflector for redirecting the primary light and/or the secondary light, e.g. B. a chamfer and/or a coating, in particular in such a way that a spatially limited recording of the primary light perpendicular to the cross-sectional area of the distal end of the optical waveguide is possible.
- the reflector can serve to redirect the portion of the secondary light that is not emitted towards the distal end.
- more complex optical configurations of the interaction zone can also be provided, e.g. B. Lenses, a microlens array and/or parabolic mirrors.
- Diamond can be mechanically connected to the distal end of the
- the light recording/emitting unit in particular the diamond, can be firmly attached to the distal end of the optical waveguide.
- the light recording/emitting unit in particular the diamond, preferably extends over at least 50% of the cross section of the distal end of the optical waveguide, particularly preferably over at least 75% of the cross section of the distal end of the optical waveguide.
- the nitrogen f-vacancy centers or the excitable material are preferably arranged only in a spatial sub-area of the light recording/emitting unit or the diamond, for example in a radially inner sub-area, which is separated from a radially outer sub-area without or without excitable material Nitrogen f-defect centers are surrounded.
- a reflector for deflecting the primary light and/or the secondary light is provided in the radially outer portion of the light receiving/emitting unit or the diamond, e.g. B. a chamfer and/or a coating.
- the reflector can preferably deflect secondary light, in particular radially emitted secondary light, onto the distal end of the optical waveguide in order to increase the light collection efficiency of the optical waveguide.
- the reflector can also be primary light, in particular transversely localized Redirect primary light to the nitrogen vacancy centers or the excitable material.
- the light recording/emitting unit in particular the diamond, the nitrogen vacancy center(s) and/or the stimulable material, can be arranged at the distal end of the optical waveguide in such a way that at least 0.5%, preferably at least 5 % of the secondary light can be coupled into the optical waveguide at the distal end, in particular after deflection by the bevel or the reflector.
- the light recording/emitting unit in particular the nitrogen vacancy center(s) and/or the excitable material, can only be arranged over a partial area of the cross section of the distal end of the optical waveguide, preferably over a partial area of less than 50%. the cross-sectional area, particularly preferably over a portion of less than 25% of the cross-sectional area.
- the optical waveguide can have a cross section between 30pm and 5000pm, preferably between 50pm and 3000pm.
- the optical waveguide can have a length between 10mm and 10,000mm, preferably between 50mm and 2000mm.
- the optical waveguide can be at least partially flexible and/or at least partially rigid or even semi-rigid.
- a taped optical waveguide can also be provided.
- the optical waveguide can have a cross section which is smaller than the cross section of the stimulable material, in particular in order to prevent primary light from flowing past the stimulable material into the light recording/emitting unit.
- the optical waveguide has a transmission of at least 30%, preferably at least 40%, even more preferably at least 50%, for a wavelength of 532 nm.
- the optical waveguide preferably has a transmission of at least 30%, preferably at least 40%, even more preferably at least 50%, for a wavelength in the range between 600 nm and 800 nm.
- the optical waveguide can comprise at least two different types of structural elements, namely a first type with a first refractive index and a second type with a second refractive index.
- the difference in the refractive indices is preferably greater than 0.05, in particular greater than 0.1, in particular greater than 0.2, in particular greater than 0.5.
- a large number of structural elements of the first type and a large number of structural elements of the second type can be included, the structural elements of the first type being designed as, in particular rod-shaped or tubular, bodies with or made of a first medium, the first medium has the first refractive index, wherein the structural elements of the second type are designed as, in particular rod-shaped or tubular, bodies with or made of a second medium, wherein the second medium has the second refractive index or wherein the structural elements of the second type are designed as cavities in the structural elements of the first type, wherein the cavities preferably form the second refractive index.
- a structural element of the first type and a large number of structural elements of the second type can also be included, wherein the structural element of the first type is designed as a, in particular monolithic, base body with or made of a first medium, the first medium having the first refractive index, and wherein the structural elements of the second type are designed as cavities in the base body, the cavities preferably forming the second refractive index.
- the structural elements in particular their cross-sectional regions, can be arranged non-uniformly in order to achieve a transverse Anderson localization of the primary light and/or the secondary light to effect.
- the structural elements can e.g. B. be really randomly arranged.
- the non-uniformity may be determined by a predetermined rule.
- the structural elements in particular their cross-sectional regions, can have a non-uniform arrangement, which is clearly defined by a predetermined rule, wherein the non-uniform arrangement, which is clearly defined by the predetermined rule, is formed
- the remote sensor device comprises a microwave generator and/or a microwave antenna for irradiating microwaves onto the light recording/emitting unit, in particular the diamond, the nitrogen defect center(s) and/or that stimulable material.
- the remote sensor device preferably comprises an evaluation unit for evaluating the secondary light received by the secondary light receiver in order to determine the external measured variable using the received secondary light.
- the invention also relates to a remote sensor unit with an optical fiber and a light recording/emitting unit.
- the optical waveguide has a proximal end and a distal end and is set up to transmit primary light from the proximal end to the distal end and/or to retransmit secondary light with a preferably different wavelength caused by the primary light at the distal end to the proximal end.
- the light recording/emitting unit At the distal end of the optical waveguide is the light recording/emitting unit for receiving the primary light, in particular from the distal end, and for emitting the secondary light to the distal end of the optical waveguide.
- the optical waveguide has a numerical aperture which is greater than 0.4 or preferably greater than 0.5 or greater than 0.6.
- Remote sensor unit may further comprise one or more of the features described above in connection with the remote sensor device.
- the optical waveguide of the remote sensor unit and/or the remote sensor device is preferably designed to transmit the primary light from the proximal end to the distal end.
- the primary light reaches the distal end and thus to the light recording/emission unit in another way, for example by sending the primary light as a free beam or via another supply fiber to the light recording/emission unit at the distal end End of the optical fiber is guided.
- the remote sensor unit and/or the remote sensor device can therefore comprise a further supply waveguide, which is designed to guide the primary light to the distal end of the optical waveguide.
- the invention relates to an endoscope comprising a remote sensor device or a remote sensor unit as described above.
- Preferred exemplary embodiments of the invention are described below with reference to the figures. Show:
- Fig. 1 a schematic representation of the distal end of an optical waveguide with a light recording/emitting unit mounted on the distal end, which receives primary light in the axial direction,
- Fig. 2 a schematic representation of the distal end of an optical waveguide with a light recording/emitting unit mechanically attached to the distal end, which receives primary light in the radial direction,
- Fig. 3 Schematic illustration of various options for optical waveguides with structural elements or structural elements designed unevenly but clearly determined by a predetermined rule. their cross-sectional regions,
- Fig. 4 Schematic illustration of various aspects of variations among structural elements or their cross-sectional regions and possibilities for combinations of these aspects
- Fig. 5 Schematic illustration of exemplary possibilities for optical fibers with non-uniform, but clearly defined by a predetermined rule, structural elements or their cross-sectional regions, the waveguides each being a structural element of a first type and a large number of structural elements of a second type and possibly.
- other types include,
- Fig. 6 Schematic illustration of various possibilities for waveguides with non-uniform, but clearly defined by a predetermined rule, structural elements or their cross-sectional regions, the waveguides each having a large number of structural elements of a first type and a large number of structural elements of a second type and possibly.
- other types include,
- Fig. 7 schematic perspective views of an optical waveguide with two types of structural elements whose cross-sectional areas are arranged unevenly distributed on a grid.
- Fig. 8 a schematic representation of the distal end of an optical waveguide with a light recording/emission unit with excitable material applied to the distal end, which extends transversely over the entire width of the optical waveguide.
- Fig. 1 shows the distal end of an optical waveguide 1 on which a light recording/emitting unit 2 is mechanically applied.
- the light recording/emitting unit 2 comprises stimulable material 20, which during operation receives the primary light 3 transmitted through the optical waveguide 1 and emits the secondary light 4.
- the light recording/emitting unit 2 is designed as a diamond and the stimulable material 20 is designed as a partial area of the diamond in which one or more nitrogen f-vacancy centers (NV centers) are located.
- NV center is characterized by the fact that in the diamond lattice a carbon atom is replaced by a nitrogen atom (N) and another, neighboring carbon atom is missing (V).
- the excitation is carried out by primary light 3 with a wavelength of z. B. 532nm or a wavelength between 515nm and 550nm.
- the secondary light 4 can have a wavelength between 600 nm and 800 nm.
- the optical waveguide 1 is therefore preferably selected so that for a wavelength of 532 nm and for a wavelength in the range between 600 nm and 800 nm there is a transmission of at least 50%, preferably at least 70%, over the length of the optical waveguide 1.
- the stimulable material 20 is arranged in a locally limited manner in the light recording/emitting unit 2.
- the stimulable material 20 is arranged transversely over a width B which is less than the width of the optical waveguide 1, in particular less than 40% or less than 30% thereof.
- the stimulable material 20 is therefore transversally only locally limited in the light recording/emitting unit 2, here the diamond.
- the primary light 3 can be transmitted in a transversally localized manner. This makes it possible to excite the transversally only locally limited excitable material 20 with transversely localized transmitted primary light 3, the transversal position of the primary light 3 corresponding to that of the excitable material 3.
- the primary light 3 is received by the excitable material in the axial direction.
- the stimulable material 20 emits the secondary light 4 in different directions, for example also in the radial direction. Due to the relatively high numerical aperture of the optical waveguide 1, which in this case is greater than 0.5, a high light collection efficiency with respect to the secondary light 4 can be achieved.
- the light recording/emitting unit 2 here the diamond
- the light recording/emitting unit 2 has a reflective coating 22 which is applied to the outer surface.
- the light recording/emitting unit 2, here the diamond has a circumferential chamfer 24 for deflecting the secondary light, which can also be provided with the coating 22.
- Fig. 2 shows the distal end of an optical waveguide 1 as in Fig. 1, whereby the transverse position of the primary light 3 deviates from that of the transversely locally arranged excitable material 20.
- the transversal position of the primary light 3 can be in the area of the reflector or the circumferential bevel 24 of the light recording/emitting unit 2.
- the excitable material 20 is thereby in the axial direction (ie perpendicular to the cross-sectional area of the distal end of the optical waveguide) can be stimulated in a spatially limited manner. It is therefore possible for the excitable material 20 extending over the height H to be excited only over a part of this height H, so that a gradient field measurement is made possible.
- the structural elements in particular their cross-sectional regions, can be characterized on the one hand by an unevenness in relation to one another, and on the other hand by a regularity in the sense that the non-uniformity of the structural elements is clearly predetermined, in particular is deterministic and/or reproducible and does not follow chance.
- the structural elements or whose cross-sectional regions have a non-uniform arrangement, which is clearly determined by a predetermined rule have mutually non-uniform geometries, which are clearly determined by a predetermined rule, and/or have mutually non-uniform refractive indices, which are clearly determined by the predetermined rule.
- Fig. 3 uses a tree diagram to show various options for realizing an uneven arrangement, which is clearly determined by a predetermined rule.
- Fig. 3a shows a structural element 10a as a starting point, which z. B. can be designed as a matrix material (it is also possible that the structural element 10a is designed as air or is absent).
- Figure 3b shows a further starting point derived therefrom with the structural element 10a and a large number of periodic positions P for assignment with structural elements, which then have a periodic positioning.
- Figure 3d shows another one from Fig. 3a derived starting point with the structural element 10a and a large number of aperiodic positions P for assignment with structural elements in order to achieve an aperiodic positioning. Based on the data shown in Fig. 3b and 3d shown starting points result from occupying the positions P with structural elements waveguides according to the invention as will be described in more detail below.
- Fig. 3b shows Fig. 3c a waveguide 1 with structural elements 10b, 10c whose cross-sectional regions have a periodic positioning and / or lie in periodic positions.
- the one in Fig. 3c has three types of structural elements 10a, 10b, 10c, each of which can have a different refractive index.
- the structural element 10a can be designed as a matrix material and the structural elements 10b and 10c can be cavities in the matrix material which are filled with materials of different refractive indices.
- one of the materials of the structural elements 10b and 10c in turn corresponds to the matrix material of the structural element 10a or. that the (filled) cavities corresponding to these structural elements are missing in the matrix material (compare below to Fig. 5a). It is also possible that the structural element 10a is designed as air or is absent and the structural elements 10b and 10c adjoin one another (compare to FIG. 6a below).
- the one in Fig. 3c shown waveguide 1 has structural elements 10b, 10c with a periodic positioning.
- the structural elements 10b, 10c are of different types and the occupancy of the different types on the regular grid is uneven, but determined by a predetermined rule.
- the variation of the structural elements 10b, 10c among themselves is therefore uneven, but is determined by a predetermined rule.
- the structural elements 10b, 10c can in particular be described as deterministically disordered.
- Fig. 3c thus shows a case of a waveguide 1, wherein the structural elements or whose cross-sectional regions have an uneven arrangement, which is clearly determined by a predetermined rule.
- the term f f of the arrangement is to be understood to mean that the selection or Occupancy of the different types of structural elements 10b, 10c on the respective periodic positions is uneven, but is determined by the predetermined rule, i.e. is not random.
- the structural elements 10b, 10c do not differ in terms of their refractive indices, i.e. e.g. B. have the same refractive index or consist of the same material, but vary in terms of other aspects (compare below to Fig. 4). It is also possible that the structural elements 10b, 10c differ both in terms of their Refractive indices differ as well as with regard to other aspects.
- Fig. 3e a waveguide 1 with two types of structural elements, namely the structural element 10a, which z. B. can be designed as a matrix material, as well as a large number of structural elements 10b, which can be designed, for example, as, in particular filled, cavities in the matrix material.
- the cross-sectional regions of the structural elements 10b are positioned aperiodically in this case.
- the positioning of the structural elements 10b can now represent the unevenness, which is determined by a predetermined rule.
- the structural elements 10b of the second type may have non-uniform positions, but determined by a predetermined rule.
- FIG. 3e thus shows a case of a waveguide 1, wherein the structural elements or whose cross-sectional regions have an uneven arrangement, which is clearly determined by a predetermined rule.
- the term “arrangement” is to be understood to mean that the or some of the structural elements or whose cross-sectional regions are positioned aperiodically, the positions being determined by the predetermined rule, i.e. not being random.
- the structural elements 10b of the second type have a uniform refractive index, have uniform geometries and/or are uniformly designed with regard to further aspects, in particular are identically designed. In this case one can speak of a uniform assignment of the aperiodic positions.
- FIG. 3 f shows, starting from Fig. 3d a waveguide 1 in which an aperiodic positioning of structural elements with different types of structural elements 10b, 10c is provided.
- the non-uniformity which is clearly determined by a predetermined rule, can lie in the aperiodic positioning of the structural elements 10b, 10c or in the occupancy, i.e. the variation of the structural elements 10b, 10c with one another, or both in the positioning in the occupancy.
- Fig. 4 shows various possible variations, which can have structural elements among each other (middle row) as well as exemplary, non-exhaustive, possible combinations of the variations (lower goals).
- the variations shown can be used in particular for occupying positions with structural elements, which are designed non-uniformly but are clearly determined by a predetermined rule.
- Structural elements whose cross-sectional regions are in periodic or aperiodic positions, e.g. B. within a matrix material can, for example, vary among themselves in terms of their shape, in terms of their type or Refractive index vary, vary in terms of their substructure and/or vary in terms of their rotation (and/or local position).
- variations of the geometries of the structural elements can be designed as variations of the shape (number of corners, diameter).
- Variations of the geometry can also be designed as variations of the substructure.
- a substructure can in particular be that a structural element, in particular its cross-sectional region, has at least two different areas of different refractive indices, in particular a core and a surrounded jacket (core-cladding system).
- a first type of structural elements can have a polygonal shell and/or a polygonal core and a second type of structural elements can have a round shell and a polygonal core (bottom row, first column). These two types of structural elements can then be used, for example, to occupy periodic or aperiodic positions.
- a first type of structural elements can have a first refractive index and a first diameter and a second type of structural elements can have a second refractive index and a second diameter (bottom row, second column); or a first type of structural elements a core-cladding system with a core with a first diameter and a second type of structural elements a core-cladding system with a core with a second diameter (bottom row, third column); or a first type of structural elements a core-cladding system with a core with a first refractive index and a second type of structural elements a core-cladding system with a core with a second refractive index (bottom row, fourth column); or a first type of structural elements having a first diameter and rotation about one outside the Structural element pivot point and a second type of structural elements a second diameter and a rotation around a pivot point located outside the structural element (bottom row, fifth column), or a first type of structural elements a core-shell system with a centered core and a second type
- Fig. 5a shows a waveguide 1, which is comparable in some aspects with the waveguide from Fig. 3c.
- the waveguide has a first structural element 10a, which can be designed, for example, as a matrix material.
- the waveguide has a plurality of structural elements 10b, which can be designed, for example, as filamented cavities in the matrix material.
- the structural elements 10b are located in periodic locations, but not all periodic locations are occupied by a structural element.
- 5a thus shows a case of a waveguide 1, wherein the structural elements or their cross-sectional regions have a non-uniform arrangement, which is clearly determined by a predetermined rule.
- arrangement is to be understood here as meaning that the or some of the structural elements or their cross-sectional regions lie on periodic locations, with some of the periodic locations being occupied and some of the periodic locations being unoccupied and the occupancy being clearly determined by a predetermined rule is, so it is not random.
- Fig. 5b shows a waveguide 1, which in each case some aspects with the waveguide from Fig. 3 f is comparable.
- the waveguide has a first structural element 10a, which z. B. can be designed as a matrix material.
- the waveguide has a large number of structural elements 10b with a first diameter and a large number of structural elements 10c with a second diameter.
- the structural elements are positioned aperiodically, whereby the aperiodic positioning can be uneven but clearly determined by a predetermined rule.
- Fig. 5b thus shows a case of a waveguide 1, wherein the structural elements or whose cross-sectional regions have an uneven arrangement, which is clearly determined by a predetermined rule.
- arrangement is to be understood to mean that the or some of the structural elements or the cross-sectional regions of which are positioned aperiodically, the aperiodic positions being determined by the predetermined rule, i.e. not being random, and/or the structural elements having a variation among themselves, which is formed non-uniformly but clearly determined by a predetermined rule, the variation being as two types of structural elements are formed, e.g. B. with different diameters.
- Fig. 6 shows some waveguides 1, each with a large number of structural elements of a first type and a large number of structural elements of a second type (and sometimes further types in FIG. 6d).
- the waveguides 1 shown here in particular do not have any matrix material; rather, the structural elements border one another.
- the ones in Fig. 6 waveguides 1 shown have in common that the structural elements of different types, in particular whose cross-sectional regions are positioned periodically, but the occupancy of the periodic positions with the types of structural elements is uneven, but clearly determined by a predetermined rule.
- the structural elements or their cross-sectional regions have an uneven arrangement, which is clearly determined by a predetermined rule, the term arrangement being understood here to mean that the selection or Occupancy of the different types of structural elements on the periodic positions is uneven, but is determined by the predetermined rule, i.e. is not random.
- FIG. 6a shows, for example, a waveguide 1 with a plurality of structural elements 10a and a plurality of structural elements 10b, which have different refractive indices.
- 6b shows a waveguide 1 with a plurality of structural elements 1Od and a plurality of structural elements 1Oe, which have different refractive indices and a different substructure, the substructure being formed by the sub-structural elements 10a and 10b (with refractive indices a and b) or 10a and 10c (with refractive indices a and c) is defined.
- the substructure here is that the structural elements lOd and lOe are designed as core-shell systems, whereby the cores differ.
- 6c similarly shows a waveguide 1 with a plurality of structural elements lOd and a plurality of structural elements lOe, which are different Refractive indices and a different substructure, the substructure being defined by the sub-structural elements 10a and 10b (with refractive indices a and b) or 10c and 10b (with refractive indices c and b).
- the substructure here is that the structural elements lOd and lOe are designed as core-shell systems, whereby the shells differ.
- 6d similarly shows a waveguide 1 with a plurality of structural elements lOe, a plurality of structural elements lOf, a plurality of structural elements 10g, and a plurality of structural elements 10h, which have different refractive indices and a different substructure, the substructure being represented by the Sub-structural elements 10a and 10b (with refractive indices a and b) or 10a and 10c (with refractive indices a and c) or 10b and lOd (with refractive indices b and d) or 10c and lOd (with refractive indices c and d). is.
- the substructure here is that the structural elements lOe, lOf, 10g and 10h are designed as core-shell systems, whereby both the shells and the cores differ.
- Fig. 6e shows a waveguide 1 with a large number of
- Structural elements 10d which have different geometries and a different substructure, the substructure of the structural element 10c being defined by the sub-
- Structural elements 10a and 10b (with refractive indices a and b and a first core diameter) are defined, and the substructure of the structural element 1Od is defined by the sub- Structural elements 10a and 10b (with refractive indices a and b and a second core diameter).
- Fig. 6f shows a waveguide 1 with a large number of structural elements 10c and a large number of structural elements 1 Od, which have different geometries and a different substructure, the substructure of the structural element 10c being represented by the sub-structural elements 10a and 10b (with refractive indices a and b and a centrally positioned core), and the substructure of the structural element l Od by the sub-structural elements 10a and 10b (with refractive indices a and b and an eccentrically positioned core).
- Fig. 7 shows an example of a three-dimensional view of an optical waveguide 1 with a large number of structural elements of a first type 10a and a large number of structural elements of a second type 10b.
- the cross-sectional regions of the structural elements are arranged on a periodic grid.
- Fig. 8 shows a further exemplary embodiment of a remote sensor unit with an optical waveguide 1 and a light recording/emitting unit 2 mounted on the distal end of the optical waveguide 1.
- the light recording/emitting unit 2 comprises stimulable material 20, which extends in the radial direction essentially over the entire width of the optical waveguide.
- the stimulable material extends over a width which corresponds to at least 50 percent, preferably at least 75 percent, of the width of the light recording/emitting unit 2 and/or the optical waveguide 1.
- the stimulable material extends in the axial direction (ie perpendicular to the cross-sectional area of the distal end of the optical waveguide) only over a part of the light recording/emitting unit 2, for example over less than 90 percent, in particular over less than 75 percent the height of the light recording/emitting unit 2.
- the stimulable material preferably extends in the axial direction over the entire light recording/emitting unit 2.
- the light recording/emitting unit 2 can be designed, for example, as a diamond layer, which extends, for example, over the entire distal facet.
- the excitable material can be designed, for example, as an, at least radially, homogeneous population with NV centers.
- the light receiving/emitting unit 2 and/or the stimulable material 20 can be irradiated over the entire surface with primary light 3.
- the secondary light 4 emitted by the light recording/emitting unit 2 to the distal end of the optical waveguide 1 can have different intensity in the radial direction, i.e. along the width of the stimulable material 20.
- This secondary light 4 can then be transmitted in a transversely localized manner through the optical waveguide 1, which is preferably designed as an Anderson waveguide.
- the described exemplary embodiment can therefore be used to realize a remote sensor unit which forms a radially spatially resolved sensor, for example a 2D sensor.
- a remote sensor unit which forms a radially spatially resolved sensor, for example a 2D sensor.
- the German patent application DE 10 2020 116 444.0 and the international patent application PCT/EP2021/066986 are hereby incorporated by reference.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022110489.3A DE102022110489A1 (de) | 2022-04-29 | 2022-04-29 | Fernsensorik-Vorrichtung |
| PCT/EP2023/057515 WO2023208483A1 (de) | 2022-04-29 | 2023-03-23 | Fernsensorik-vorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4515309A1 true EP4515309A1 (de) | 2025-03-05 |
Family
ID=85795436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23714514.9A Pending EP4515309A1 (de) | 2022-04-29 | 2023-03-23 | Fernsensorik-vorrichtung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20250288229A1 (de) |
| EP (1) | EP4515309A1 (de) |
| JP (1) | JP7844659B2 (de) |
| KR (1) | KR20240134019A (de) |
| CN (1) | CN118765379A (de) |
| DE (1) | DE102022110489A1 (de) |
| WO (1) | WO2023208483A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024208340A1 (de) * | 2024-09-03 | 2026-03-05 | Robert Bosch Gesellschaft mit beschränkter Haftung | Vorrichtung und Verfahren zum Messen von intrakorporal erzeugten Magnetfeldern |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3650688T2 (de) | 1985-03-22 | 1999-03-25 | Massachusetts Institute Of Technology, Cambridge, Mass. | Faseroptisches Sondensystem zur spektralen Diagnose von Gewebe |
| US5191388A (en) | 1991-12-18 | 1993-03-02 | Flow Vision, Inc. | Apparatus for detecting and analyzing particulate matter in a slurry flow |
| JP5159298B2 (ja) * | 2007-12-27 | 2013-03-06 | オリンパス株式会社 | 内視鏡装置 |
| US9451885B2 (en) | 2010-12-22 | 2016-09-27 | University of Pittsburgh—of the Commonwealth System of Higher Education | Depth-selective fiber-optic probe |
| US9642568B2 (en) * | 2011-09-06 | 2017-05-09 | Medtronic Minimed, Inc. | Orthogonally redundant sensor systems and methods |
| JP7136076B2 (ja) * | 2017-02-21 | 2022-09-13 | 住友電気工業株式会社 | ダイヤモンド磁気センサー |
| CN110651209B (zh) * | 2017-04-21 | 2021-09-24 | 努布鲁有限公司 | 多包层光纤 |
| WO2020054860A1 (ja) * | 2018-09-14 | 2020-03-19 | 国立大学法人東京工業大学 | 集積回路及びセンサシステム |
| JP7223272B2 (ja) * | 2019-04-22 | 2023-02-16 | スミダコーポレーション株式会社 | 励起光照射装置および励起光照射方法 |
| US11321837B2 (en) | 2019-06-12 | 2022-05-03 | University Of Central Florida Research Foundation, Inc. | Fiber imaging apparatus, methods, and applications |
| JP2021036312A (ja) * | 2019-08-20 | 2021-03-04 | 東レ株式会社 | プラスチック光ファイバおよびそれを用いたプラスチック光ファイバコード |
| CN111552026A (zh) | 2020-04-10 | 2020-08-18 | 桂林电子科技大学 | 一种用于人体介入可视化光动力治疗的光纤及系统 |
| DE102020116444A1 (de) * | 2020-06-22 | 2021-12-23 | Schott Ag | Wellenleiter und Verfahren zur Herstellung eines Wellenleiters |
| CN114034674B (zh) * | 2021-11-01 | 2024-02-23 | 安徽省国盛量子科技有限公司 | 基于烧熔技术的量子精密测量探头的加工工艺 |
-
2022
- 2022-04-29 DE DE102022110489.3A patent/DE102022110489A1/de active Granted
-
2023
- 2023-03-23 EP EP23714514.9A patent/EP4515309A1/de active Pending
- 2023-03-23 CN CN202380023885.4A patent/CN118765379A/zh active Pending
- 2023-03-23 US US18/861,446 patent/US20250288229A1/en active Pending
- 2023-03-23 KR KR1020247026861A patent/KR20240134019A/ko active Pending
- 2023-03-23 JP JP2024552733A patent/JP7844659B2/ja active Active
- 2023-03-23 WO PCT/EP2023/057515 patent/WO2023208483A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20250288229A1 (en) | 2025-09-18 |
| JP2025514597A (ja) | 2025-05-09 |
| JP7844659B2 (ja) | 2026-04-13 |
| CN118765379A (zh) | 2024-10-11 |
| DE102022110489A1 (de) | 2023-11-02 |
| WO2023208483A1 (de) | 2023-11-02 |
| KR20240134019A (ko) | 2024-09-05 |
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