CN2463847Y

CN2463847Y - Optical fibre of CCD micro-imaging and optical fibre device geometric sense detector

Info

Publication number: CN2463847Y
Application number: CN 01202574
Authority: CN
Inventors: 冯华君; 徐之海; 李奇; 戴顺林; 边美娟
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2001-01-15
Filing date: 2001-01-15
Publication date: 2001-12-05
Anticipated expiration: 2011-01-15

Abstract

The utility model relates to a geometric sense detector for optical fibre and optical fibre elements of CCD microscope imaging devices. In the utility model, a component can do five-dimension adjustment and is installed above a microscope objective lens; a detected piece can be installed in the five-dimension adjusting component after being clamped by a clamping component; a coaxial optical coupling mirror and a CCD area array are orderly installed under the microscope objective lens; one side of the coaxial optical coupling mirror is provided with a light source collimating mirror and a light source; an interference light splitter is installed between the microscope objective lens and the five-dimension adjusting component; one side of the interference light splitter is provided with a standard template. The utility model can detect the geometric shape of optical fiber and optical fiber elements and the quality of end surfaces and can display or print results by adopting the measurable surface shape status.

Description

The optical fiber of CCD micro-imaging and optical fibre device measure instrument for geometrical

The method that the utility model relates to adopt electricity is the metering outfit of feature, is a kind of optical fiber and optical fibre device measure instrument for geometrical of CCD micro-imaging.

Optical communication is one of the most popular both at home and abroad current industry.Optical fiber and relevant optical fibre device comprise that optical patchcord, connector, tail optical fiber, shunt, coupling mechanism are the basic devices of optical communication field.Because optical communication field has huge development prospect, lucrative, market potential is very big, and at present domestic existing many enterprises begin to produce optical fiber and optical fibre device.Detection to optical fiber and optical fibre device comprises geometric sense detection, spectral detection, decay detection, chromatic dispersion and distortion detection etc.External instrument is all introduced in factory and user's detection at present, but the general complex structure of this instrument, price is very expensive, and maintenance difficult.

The purpose of this utility model is the optical fiber and the optical fibre device measure instrument for geometrical of a kind of CCD micro-imaging simple in structure of design.

In order to achieve the above object, the technical solution adopted in the utility model is:

One group of available microcobjective of enlargement ratio is housed in the instrument, the parts that can make five dimensions and the regulate rotation of turning axle (be with the optical axis except) are housed above microcobjective, after measured piece clamps with the clamping parts, be contained in and do in the parts that five dimensions regulate; Axis light coupling mirror, CCD face battle array are housed below microcobjective successively; One side of axis light coupling mirror is equipped with light source collimating mirror and light source.

Also can be and can do between the parts that five dimensions regulate interference spectroscope to be housed at microcobjective, in a side of interference spectroscope standard jig is housed.

The advantage that the utlity model has is:

1) but the geometric configuration of detection fiber and optical fibre device end face comprises fibre core, covering, glue-line, ceramic layer ovality; Each interlayer degree of eccentricity; Each layer diameter;

2) can be observed end face quality such as cut, shelter defectives such as defect, bubble, dust;

When 3) adding standard jig and interference spectroscope in the system, can measure the shape situation of appearing, as end face spherical radius, aspherical degree, optical fiber height;

4) can calculate above each parameter with Computer Processing, the actual end surface shape of drawing, the examination criteria thresholding is set after, can directly judge measured device be qualified/defective, and can show or print the result;

5) clamping parts group is interchangeable, is applicable to various optical fiber (bare fibre, band protective seam optical fiber, single-mode fiber, multimode optical fiber), various optical fibre devices (tail optical fiber, wire jumper, connector, shunt, coupling mechanism etc.);

6) microcobjective is interchangeable, and framing is easy, the visual field variable size.

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing is a structural representation of the present utility model.

As shown in drawings, principle of work of the present utility model is as follows: light source 7 is through collimating mirror 6, axis light coupling mirror 5, assemble on the measured piece 1 that throws light on by microcobjective 4, measured piece 1 is after clamping with clamping parts 2, be contained on the parts 3 that to do five dimension adjustings, five dimensions are regulated five degree of freedom of parts 3 may command, comprise moving of three mutually perpendicular directions, the rotation of control optical axis pitching and the rotation of controlling level direction swing, wherein be parallel to moving of optical axis and be μ m level micro-adjusting mechanism, illuminated measured piece 1 core through microcobjective 4 amplification imagings on CCD face battle array 8, handle output through control circuit 9, can import computing machine 10 and carry out digitized processing and obtain each geometric sense, or directly import monitor, for eye-observation.Standard jig 11 and interference spectroscope 12 are optional appliance in the system.When adding these two parts in the system, computing machine will obtain interference fringe: the light of microcobjective 4 outputs is divided into two-way through interference spectroscope 12, and a Reuter is mapped to measured piece 1, and through measured piece 1 reflected back object lens, another road reflexes to standard jig 11, and through model 11 reflected back object lens light paths.Because of this two road light is coherent light, and two reflectings surface (tested surface and standard jig face) are in the conjugation position, so this two road light will interfere, and will observe interference fringe on the CCD face battle array 8.By analysis, can obtain measured piece face shape situation to interference fringe.

CCD face battle array 8 can be with 1/3 " black and white or colored CCD; Control circuit 9 comprises that ccd signal amplifies, shifts, output, can select the CCD camera of the band control circuit of commercialization for use, as MTV-368CB etc.; Calculating 10 is the standard computer of any band image card; Monitor can be selected the monitor of any band video input for use, as CE-7009 etc.; The image card can be selected various models for use, as CPE-1000 etc.

Usually the tested center physical dimension of tested optical fiber or optical fibre device is very little, and typical single-mode fiber core diameter is 9 μ m, and cladding diameter is 125 μ m, and the ceramic head center need be examined regional diameter and be about 300 μ m.Shelter the defect size generally in μ m magnitude.CCD selects 1/3 for use, and " specification, area are 4 * 5mm ², therefore micro-amplification is essential.The present invention adopts the microcobjective of the different enlargement ratios of three covers, selects for use for different test blocks and test request.Typical three cover microcobjective enlargement ratios are 4X, 10X, 20X.The 4X microcobjective is mainly used to system's alignment and the coarse adjustment focusing is used.The 10X microcobjective can supply the detection fiber device, and the device face area of detection can reach φ 400 μ m, and the 20X microcobjective can supply emphasis detection fiber fibre core and cladding diameter 200 μ m with inner region.

Claims

1.CCD the optical fiber of micro-imaging and optical fibre device measure instrument for geometrical, it is characterized in that: one group of available microcobjective of enlargement ratio [4] is housed in the instrument, the parts [3] that can do five dimension adjustings are housed in the top of microcobjective [4], after measured piece [1] clamps with clamping parts [2], be contained in the parts [3] that to do five dimension adjustings; Axis light coupling mirror [5], CCD face battle array [8] are housed successively in the below of microcobjective [4]; One side of axis light coupling mirror [5] is equipped with light source collimating mirror [6] and light source [7].

2. the optical fiber of CCD micro-imaging according to claim 1 and optical fibre device measure instrument for geometrical, it is characterized in that: at microcobjective [4] and can do between the parts [3] that five dimensions regulate interference spectroscope [12] to be housed, standard jig [11] is housed in a side of interference spectroscope [12].