An end telescopic test optical fiber head

Abstract

The present invention discloses an end telescopic test optical fiber head, comprising a head, a nut connected by an external thread on the lower side of the head, a movable sleeve arranged in the second chamber of the nut and passing through a hollow through hole, an elastic component placed under the movable sleeve and supporting the movable sleeve, and a limiting sleeve located in the third chamber of the nut and supporting the elastic component, a shoulder structure is provided between the first chamber and the second chamber, the bottom of the movable sleeve has an axial shoulder corresponding to the shoulder structure, the optical fiber core enters the through hole of the movable sleeve located in the second chamber through the third chamber and leaves a gap with the top end surface of the head, and the optical fiber core is inserted into the optical fiber core; the present invention can more conveniently detect large drills and small drills.

Description

Technical Field

[0001] The invention relates to the field of optical machinery, in particular to a testing optical fiber head. Background Art

[0002] Optical fiber, as a light-conducting carrier, is an indispensable component in diamond testing instruments and is currently widely used in various diamond testing instruments. However, through use and investigation, it is found that the test ends of all optical fiber components on the market are fixed, and the following two problems are prone to occur during testing: the optical fiber is in direct contact with the diamond, and the optical fiber working end face (transmitting / reflecting) is prone to wear; when the diamond particles are very small, especially when testing mounted loose diamonds, there is a misalignment, resulting in mismeasurement, so it is necessary to find a suitable way and method to avoid the above problems. Summary of the invention

[0003] In view of this, it is necessary to overcome at least one of the above-mentioned defects in the prior art. The present invention provides an end telescopic test optical fiber head, comprising a head with a hollow through hole at the end of the optical fiber head and an internal thread at the lower part of the hollow through hole, a nut connected with the internal thread of its own first chamber through the external thread on the lower side of the head, a movable sleeve arranged in the second chamber of the nut and passing through the hollow through hole, an elastic component placed under the movable sleeve and supporting the movable sleeve, and a limiting sleeve located in the third chamber of the nut and supporting the elastic component, a shoulder structure is provided between the first chamber and the second chamber, and the bottom of the movable sleeve has an axial shoulder corresponding to the shoulder structure, the optical fiber core enters the through hole of the movable sleeve located in the second chamber through the third chamber and leaves a gap with the top surface of the head, and the fiber core is inserted into the optical fiber core.

[0004] According to the prior art described in the background of this patent, the following two problems are likely to occur when testing diamonds: the optical fiber is in direct contact with the diamond, and the working end face (transmitting / reflecting) of the optical fiber is easily worn; when the diamond particles are very small, especially when testing the loose diamonds that are mounted, there is a misalignment, resulting in mismeasurement; and the end telescopic test optical fiber head disclosed in the present invention enables the movable sleeve to move up and down through the elastic element. During the diamond testing process, it is only necessary to contact the diamond to be tested with the head end face (for larger diamonds) and press down or place it inside the movable sleeve and press down (for smaller diamonds), so that the testing instrument can obtain a suitable distance for testing during the pressing process, so that it can be ensured that the diamond to be tested does not come into direct contact with the surface corresponding to the optical fiber. At the same time, for small diamonds, the movable sleeve can play a positioning and limiting role, avoiding the corresponding misalignment problem.

[0005] Under normal conditions, the movable sleeve protrudes from the end face of the head. When testing a large drill, since the size of the movable sleeve is smaller than that of the large drill, the movable sleeve retreats to a position flush with the end face of the head under the action of pressure and elastic elements, and testing is carried out at this time; when testing a small drill, the small drill can be directly pressed into the interior of the movable sleeve, and under the action of pressure and elastic elements, the movable sleeve moves downward, and the test of the small drill is completed during the downward movement.

[0006] In addition, the end telescopic test optical fiber head disclosed in the present invention also has the following additional technical features:

[0007] Furthermore, the top of the fiber core is flush with the top of the pipeline insert.

[0008] Furthermore, the top of the fiber core is flush with the top of the pipeline insert, and the gap is greater than or equal to 1 mm and less than or equal to 3 mm. An appropriate gap can ensure that the best distance is found and the best test result is obtained during the diamond pressing process.

[0009] Furthermore, the head is a flange structure.

[0010] Furthermore, the elastic element is a spring.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0014] Among them, there are a head 1, a nut 2, an optical fiber ferrule 3, a movable sleeve 4, a fiber core 5, an elastic element 6, and a limiting sleeve 7. DETAILED DESCRIPTION

[0015] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0016] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "horizontal", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "connection", "communication", "connected", "connection" and "fitting" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal communication of two elements; it can be directly connected or indirectly connected through an intermediate medium; "fitting" can be the fit between surfaces, or the fit between points and surfaces or lines and surfaces, and also includes the fit between holes and axes. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] As shown in the figure, according to an embodiment of the present invention, an end telescopic test optical fiber head comprises a head having a hollow through hole at the end of the optical fiber head and an internal thread at the lower part of the hollow through hole, a nut connected to the internal thread of its own first chamber through the external thread on the lower side of the head, a movable sleeve arranged in the second chamber of the nut and passing through the hollow through hole, an elastic component placed under the movable sleeve and supporting the movable sleeve, and a limiting sleeve located in the third chamber of the nut and supporting the elastic component, a shoulder structure is provided between the first chamber and the second chamber, the bottom of the movable sleeve has an axial shoulder corresponding to the shoulder structure, the optical fiber core enters the through hole of the movable sleeve located in the second chamber through the third chamber and leaves a gap with the top surface of the head, and the fiber core is inserted into the optical fiber core.

[0019] In addition, the end telescopic test optical fiber head disclosed in the present invention also has the following additional technical features:

[0020] According to some embodiments of the present invention, the top end of the fiber core is flush with the top end of the pipeline ferrule.

[0021] According to some embodiments of the present invention, the top of the fiber core is flush with the top of the pipeline ferrule, and the gap is greater than or equal to 1 mm and less than or equal to 3 mm. The appropriate gap can ensure that the best distance is found and the best test result is obtained during the diamond pressing process.

[0022] According to an embodiment of the present invention, the head is a flange structure.

[0023] According to an embodiment of the present invention, the elastic element is a spring.

[0024] According to some embodiments of the present invention, the head is a SMA905 flange joint, and the nut is a SMA905 nut.

[0025] Any reference to "one embodiment," "an embodiment," "illustrative embodiment," etc. means that the specific components, structures, or features described in conjunction with the embodiment are included in at least one embodiment of the present invention; such schematic expressions throughout this specification do not necessarily refer to the same embodiment; and, when specific components, structures, or features are described in conjunction with any embodiment, it is claimed that the implementation of such components, structures, or features in conjunction with other embodiments is within the scope of those skilled in the art.

[0026] Although the specific implementation modes of the present invention have been described in detail with reference to a number of illustrative embodiments of the present invention, it must be understood that a variety of other modifications and embodiments may be devised by those skilled in the art, which will fall within the spirit and scope of the principles of the present invention; specifically, within the scope of the foregoing disclosure, drawings and claims, reasonable variations and improvements may be made in the arrangement of components and / or dependent combination layouts without departing from the spirit of the present invention; except for variations and improvements in components and / or layouts, the scope is defined by the appended claims and their equivalents.

Claims

1. An end telescopic test optical fiber head, characterized in that: The invention comprises a head having a hollow through hole at the end of the optical fiber head and an external thread at the lower part of the hollow through hole, a nut connected with the internal thread of the first chamber of the nut through the external thread at the lower side of the head, a movable sleeve arranged in the second chamber of the nut and passing through the hollow through hole, an elastic component placed under the movable sleeve and supporting the movable sleeve, and a limiting sleeve located in the third chamber of the nut and supporting the elastic component, a shoulder structure is provided between the first chamber and the second chamber, the bottom of the movable sleeve has an axial shoulder corresponding to the shoulder structure, and the optical fiber core enters the movable sleeve located in the second chamber through the third chamber. The through hole of the sleeve leaves a gap with the top end surface of the head, the fiber core is inserted into the fiber optic ferrule, the top end of the fiber core is flush with the top end of the fiber optic ferrule, and the gap is greater than or equal to 1mm and less than or equal to 3mm; in a normal state, the movable sleeve protrudes from the end surface of the head. When testing a large drill, since the size of the movable sleeve is smaller than that of the large drill, the movable sleeve retreats to a position flush with the end surface of the head under the action of pressure and elastic components, and detection is performed at this time; when testing a small inlaid drill, the small drill is directly pressed into the inside of the movable sleeve, and under the action of pressure and elastic components, the movable sleeve moves downward, and the test of the small drill is completed during the downward movement.

2. The end telescopic test optical fiber head according to claim 1, characterized in that: The head is a flange structure.

3. The end telescopic test optical fiber head according to claim 1, characterized in that: The elastic component is a spring.

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