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Laterally emitting device and method of manufacturing same

A side and injection surface technology, which is applied in the field of side injection devices, can solve problems such as deterioration reliability, reduction, and unstable beam quality, and achieve the effect of reducing the number of parts and reducing the manufacturing process

Active Publication Date: 2014-04-02
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The object of the present invention is to develop a side injection device that solves the problems of the above conventional side injection devices, eliminates the problems of unstable beam quality and deterioration and reliability reduction caused by adhesives, and is easy to manufacture. Can also be used for small and thin blood vessels, etc.

Method used

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  • Laterally emitting device and method of manufacturing same
  • Laterally emitting device and method of manufacturing same
  • Laterally emitting device and method of manufacturing same

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Embodiment

[0084] Figure 1~4 The side injection device 1 related to the embodiment, figure 1 is the side view, figure 2 is the front view, image 3 is the enlarged side view of prism 4, Figure 4 yes image 3 The A-A line profile.

[0085] The side emission device 1 is composed of an optical fiber 2 , a rod lens 3 , and a prism 4 .

[0086] The optical fiber 2 is a single-mode optical fiber with an outer diameter of 125 μm, and the coating portion 2 a at the front end is removed, and the rod lens 3 is welded to the front end.

[0087] The rod lens 3 is a GRIN lens with an outer diameter of 125 μm made of quartz glass, and the axes of the optical fiber 2 and the rod lens 3 are automatically aligned by the self-alignment effect during welding.

[0088] The prism 4 is quartz glass, and a part of the outer circumference of a cylinder with a diameter of d=125 μm is cut off for g=11 μm, and the remaining h=114 μm to form the basic shape of a planar exit surface 4c parallel to the axis...

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Abstract

A lateral light emitting device that is free from variations and degradation in beam quality and reduction in reliability caused by adhesive, can be easily produced, and has a small diameter in order to be usable for a thin blood vessel and the like is developed. The problem is solved by fusing one end of a rod lens to an end surface of an optical fiber, and by fusing a prism to another end of the rod lens. The prism has a basic shape including a planar light emitting surface parallel to an axis formed by cutting part of a circumference of a cylinder and has a distal end inclined surface, a distal end portion of which is diagonally cut. Alternatively, the problem is solved by fusing a prism lens to the end surface of the optical fiber. The prism lens has a basic shape including a planar light emitting surface parallel to the axis formed by cutting part of a circumference of a cylinder and has a distal end inclined surface, a distal end portion of which is diagonally cut.

Description

technical field [0001] The present invention relates to a side emitting device for emitting light propagating in an optical fiber to the side forming an angle with respect to the optical axis of the optical fiber, and in particular to an optical probe suitable for OCT (Optical Coherence Tomography, optical coherence tomography) The side injection device used and its manufacturing method. Background technique [0002] OCT is a method in which an optical probe is inserted into the patient's blood vessels, intestines and other organs, and low-coherent light is emitted from the front end to the side, and the light reflected from various parts inside the subject is used to obtain a precise tomography inside the subject. The optical coherence tomography technology of the image, its basic technology is disclosed in Japanese Patent Publication No. 6-35946 (Patent Document 1), and the specific structure of the optical probe is disclosed in Japanese Patent Application Publication No. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/00G01N21/17
CPCG02B6/2551A61B5/0084G02B6/262A61B1/00165A61B5/02007G02B6/32A61B5/0066G02B6/2552G02B6/0008A61B1/002A61B5/00G01B11/00
Inventor 丸山直文福田敏明
Owner TOYO SEIKAN GRP HLDG LTD
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