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probe

A technology of optical axis and optical fiber, which is applied in the probe field, can solve the problem that the lens is not disclosed, and achieve the effect of reducing reflected stray light

Inactive Publication Date: 2015-08-12
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Patent Document 1 discloses a technique for fixing two optical fibers to a ferrule, but it does not disclose the lens

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach 〕

[0048] figure 1 It is a schematic cross-sectional view showing a portion near the tip of the probe 1 .

[0049] The probe 1 includes a light-emitting optical fiber 20 , a light-receiving optical fiber 10 and a lens 30 .

[0050] The proximal end of the probe 1 is connected to a base unit not shown. The basic unit has a light source for excitation light, a beam splitter, and an analysis device. The base end of the light-emitting optical fiber 20 is connected to the light source, and the base end of the light-receiving optical fiber 10 is connected to the beam splitter. Exciting light (for example, X-rays, ultraviolet rays, visible light, or electromagnetic waves) emitted from the light source is incident on the base end of the optical fiber 20 for projection, and propagates to the front end of the optical fiber 20 for projection in the interior of the optical fiber 20 for projection. shoot. The excitation light emitted from the tip of the light-projecting optical fiber 20 i...

no. 2 approach 〕

[0086] Figure 3A It is a sectional view showing the vicinity of the tip of the probe 1 when the third optical axis 31 of the lens 30 coincides with the first optical axis 11 of the light-receiving optical fiber 10 . Figure 3B It is a figure showing only the optical fiber 10 for light reception, the optical fiber 20 for light projection, and the lens 30.

[0087] The light-receiving optical fiber 10 and the light-emitting optical fiber 20 pass through the sleeve 40 from one end to the other end of the tubular sleeve 40 . The sleeve 40 has flexibility.

[0088]A tubular lens holder 70 is engaged with the ferrule 40 by the ferrule 60 . That is, a part of the hoop 60 is fitted into the opening at the end of the sleeve 40 , and the other part of the hoop 60 is fitted into the opening at the end of the lens holder 70 .

[0089] The hoop frame 60 is provided in a tubular shape, and the hoop 50 is fitted into the hoop frame 60 . The portion near the front end 13 of the light-rec...

no. 3 approach 〕

[0099] Figure 4A The third optical axis 31 of the lens 30 is parallel to the first optical axis 11 of the light-receiving optical fiber 10 and the second optical axis 21 of the light-emitting optical fiber 20, and the third optical axis 31 of the lens 30 is from the In the case where the first optical axis 11 is deviated, a cross-sectional view of a portion near the tip of the probe 1 is shown. Figure 4B It is a figure showing only the optical fiber 10 for light reception, the optical fiber 20 for light projection, and the lens 30.

[0100] The ferrule 40 , the ferrule 50 , the ferrule holder 60 , and the lens holder 70 are the same as those of the second embodiment, and description thereof will be omitted.

[0101] The near-tip portion 13 of the light-receiving optical fiber 10 and the near-tip portion 23 of the light-emitting optical fiber 20 are fixed to the ferrule 50 , and the near-tip portions 13 , 23 are in contact with each other. The incident surface 12 of the lig...

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Abstract

The probe (1) is provided with: a light-receiving optical fiber (10) having an entrance face (12) on the tip that is orthogonal to a first optical axis (11); a light-emitting optical fiber (20) having an exit face (22) on the tip that is orthogonal to a second optical axis (21) ; and a lens (30) with a positive refractive power that projects light exiting from the exit face (22) onto the measurement site of a living tissue and focuses light radiated from the measurement site of the living tissue onto the entrance face (12). The lens (30) has a convex surface (34) that faces the entrance face (12) and exit face (22), a flat surface (36) formed on the side opposite the convex surface (34), and a third optical axis (31). The distance (L1) from the center (35) of the convex surface (34) to the first optical axis (11) of the light-receiving optical fiber (10) is shorter than the distance (L2) from said center (35) to the second optical axis (21) of the light-emitting optical fiber (20).

Description

technical field [0001] The invention relates to a probe comprising an optical fiber for light projection, an optical fiber for light reception and a lens. Background technique [0002] In order to observe and detect the pathological state of living tissue, various technologies are being proposed and put into practical use. In particular, endoscopes that are inserted into lumens in the body, image living tissues, and transmit images thereof are widely used. In addition to image diagnosis using visible light, technologies using ultrasound, fluorescence, or spectroscopy have also been proposed. In particular, methods utilizing fluorescence have the advantage of enabling immediate diagnosis. [0003] In order to perform a diagnosis using fluorescence, it is necessary to irradiate a measurement site of a living tissue with excitation light to cause it to emit fluorescence, and to analyze the wavelength and intensity of the generated fluorescence. Probes capable of the above di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/00G01N21/64
CPCG01N2021/6484A61B5/0059G01N21/645A61B5/0071A61B5/0084A61B1/00096A61B1/00165A61B1/043A61B1/00179
Inventor 泷村俊则
Owner KONICA MINOLTA INC
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