METHOD AND DEVICE FOR DIFFUSE EXCITATION IN IMAGING
First Claim
Patent Images
1. Diffuse optical imaging device to image a medium, comprising:
- a) a radiation source to form incident radiation on the medium, at least at a first wavelength,b) a device to detect a diffused or fluorescence signal, emanating from the examined medium,c) a coupling device comprising;
a mass comprising a bearing surface to be applied against the surface of the medium to be examined,at least one collection optical fibre to collect a signal emanating from a medium, and to convey it towards detection device, and at least one excitation optical fibre to bring the incident radiation onto the medium to be examined, each optical fibre;
either having one end arranged permanently in the diffusing material,or the coupling device comprising at least one housing capable of receiving said optical fibre, this housing being provided in the mass of diffusing material,the end of the collection optical fibre or the bottom of the housing capable of receiving the collection optical fibre being located at a distance (h) from the bearing surface shorter than the distance (H) from the bearing surface at which the end of the excitation optical fibre or the bottom of the housing capable of receiving the excitation optical fibre is located,said mass of the coupling device being in diffusing material for a wavelength guided by at least one of the optical fibres.
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Abstract
The invention concerns a coupling device for at least one optical fibre (10, 12) with a view to optical tomography-type examination of a medium (11) to be examined, comprising:
- a mass (30) in diffusing material for a wavelength guided by the optical fibre, this mass comprising a bearing surface (22) to be applied against the surface (110) of the medium (11) to be examined,
- at least one housing (27, 29) provided in the mass and capable of receiving the end of an optical fibre (10, 12).
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Citations
16 Claims
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1. Diffuse optical imaging device to image a medium, comprising:
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a) a radiation source to form incident radiation on the medium, at least at a first wavelength, b) a device to detect a diffused or fluorescence signal, emanating from the examined medium, c) a coupling device comprising; a mass comprising a bearing surface to be applied against the surface of the medium to be examined, at least one collection optical fibre to collect a signal emanating from a medium, and to convey it towards detection device, and at least one excitation optical fibre to bring the incident radiation onto the medium to be examined, each optical fibre; either having one end arranged permanently in the diffusing material, or the coupling device comprising at least one housing capable of receiving said optical fibre, this housing being provided in the mass of diffusing material, the end of the collection optical fibre or the bottom of the housing capable of receiving the collection optical fibre being located at a distance (h) from the bearing surface shorter than the distance (H) from the bearing surface at which the end of the excitation optical fibre or the bottom of the housing capable of receiving the excitation optical fibre is located, said mass of the coupling device being in diffusing material for a wavelength guided by at least one of the optical fibres. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Diffuse optical imaging device to image a medium, comprising:
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a matrix or mass of material, this mass comprising a bearing surface with one or more convex protuberances and no sharp edges to be applied against the surface of the medium to be examined, at least one optical fibre of which one end is arranged permanently in the diffusing material and/or at least one housing provided in the mass and capable of receiving the end of an optical fibre, said matrix or mass of material being in diffusing material for a wavelength guided by said optical fibre. - View Dependent Claims (13, 14, 15, 16)
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Specification