CN201413230Y

CN201413230Y - Improved optical fiber geometric parameter tester

Info

Publication number: CN201413230Y
Application number: CN2009201555882U
Authority: CN
Inventors: 沈群华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-21
Filing date: 2009-05-21
Publication date: 2010-02-24
Anticipated expiration: 2019-05-21

Abstract

The utility model relates to an improved optical fiber geometric parameter tester comprising a light source, a lens, plane lenses, an optical fiber clamp, a background light, a microscope, a camera, an image collection system, a computer and a printer. The improved optical fiber geometric parameter tester is characterized in that a light path is added in the geometric parameter tester, the light path is only added with the light source, the lens, the background light and the plane lenses, the optical fiber clamp moves in a three-dimensional direction controlled by a motor, a pair of the addedplane lenses are placed in parallel with lens surfaces being opposite to each other and placed at 90 degrees with the original pair of plane lenses; and the two pairs of plane lenses are controlled byone motor simultaneously. The improved optical fiber geometric parameter tester has the following advantages: the position of the optical fiber is adjustable automatically, and the tests of all geometric parameters of the optical fiber can be finished once; therefore, the device is more intelligentized, the testing efficiency is higher, and the device availability is higher.

Description

Improved optical fiber geometric parameter tester

Technical field

The utility model relates to test optical fiber instrument field, especially about a kind of improvement of optical fiber geometric parameter tester.

Background technology

In the prior art, the geometric parameter of optical fiber is mainly indexs such as the core diameter, coat diameter, core-cladding concentricity error, core bag out-of-roundness of measuring fiber, normally the coat 92 of Fig. 1 or optical fiber 90 shown in Figure 2 is peeled off, stay fibre core 91, then, the end face of fibre core 91 is cut flat or grinds flatly, put into anchor clamps then; The other end is handled too again, put into another anchor clamps then, adjust the position of optical fiber, thereby make it in the test specification that computing machine shows, amplify through optical imagery then, by algorithm, computer program tests out the geometric parameter of fibre core automatically; When then surveying the coat geometric parameter, the optical fiber of one end is taken out from mould, directly the end face of the whole optical fiber 90 of cutting is until smooth, then with this fibre clip in anchor clamps, adjust the position of optical fiber, thereby make it in the test specification that computing machine shows, amplify through optical imagery then, by algorithm, computer program tests out the geometric parameter of coat automatically.Its testing principle figure as shown in Figure 3, at first discuss the process of surveying core parameters: the light that light source 1 sends is through behind the convex lens 1, become almost parallel light, planoconvex lens 2 is assembled to being clamped in the anchor clamps 14 in the fibre core 91 then, light is transmitted to anchor clamps 24 places through optical fiber 90, in the anchor clamps 24 also clamping fibre core 91, light penetrates from anchor clamps 24 to convex lens 3, planoconvex lens 3 backs become directional light to project catoptron 31, light shine catoptron 32 again, optical fiber through catoptron 32 reflections enters in the microscope 5, by camera 6 image acquisition is got off then, deliver to image capturing system 7 again, image is imported in the computing machine 8 measure, so just finished the test of core parameters; Certainly, bias light 2 is lighted the background of optical fiber, enters the light path of convex lens 3 and back simultaneously, makes optical fiber image outline on computers more clear; Gray-scale value by each picture element on the computer acquisition video camera obtains the intensity profile on the fiber end face, thereby can accurately calculate the geometric parameter of optical fiber.

When measuring the coat geometric parameter, in the anchor clamps 24 is the optical fiber that does not divest coat 92, after having surveyed fibre core, the optical fiber in the anchor clamps 24 needs cutting again, quite trouble, and, need alignment jig front-back direction up and down, so that optical fiber just in time is positioned at the test zone of computer screen, these two processes quite bother, therefore, restricted the testing efficiency of optical fiber geometric parameter widely.

The utility model content

In order to address the above problem, the utility model improves existing optical fiber geometric parameter tester, and it is realized by the following technical solutions:

Improved optical fiber geometric parameter tester, it comprises: light source, lens, planar optics, fiber clamp, bias light, microscope, camera, image capturing system, computing machine, printer; It is characterized in that: increased a light path in the described geometric parameter tester, a light source, lens, a bias light and pair of planar eyeglass have only been increased in the described light path, described fiber clamp is by the motion of Motor Control three-dimensional, parallel and the minute surface of the pair of planar eyeglass of described increase is relatively placed, and with original one planar optics be 90 degree place; Described two pairs of planar optics are controlled by a motor simultaneously; Described geometric parameter tester is after finishing the fiber end face cutting, and computing machine is according to Automatic Program conversion light path and finish fibre core and the test of coat; Described bias light is that the ring-type light-emitting diodes is luminous forms by one.

The beneficial effects of the utility model: owing to increased light path and adopted program controlled motor to drive the mode of clamp movement, therefore, the position of optical fiber can be regulated automatically; Because program controlled motor drives plane minute surface rotation, has realized the switching of light path, therefore, once just can finish the test of all geometric parameters of optical fiber; Therefore, equipment is more intelligent, testing efficiency is higher; Plant factor is higher.

Description of drawings

Fig. 1 is the schematic perspective view of one section optical fiber being tested;

Fig. 2 is the view that amplify on the right side of Fig. 1;

Fig. 3 is the principle schematic of the tester of prior art optical fiber geometric parameter;

Fig. 4 is a principle schematic of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is done detailed explanation.

Embodiment one:

See also Fig. 4, improved optical fiber geometric parameter tester, it comprises: light source, lens, planar optics, fiber clamp, bias light, microscope, camera, image capturing system, computing machine, printer; It is characterized in that: increased a light path in the described geometric parameter tester, a light source, lens, a bias light and pair of planar eyeglass have only been increased in the described light path, described fiber clamp is by the motion of Motor Control three-dimensional, parallel and the minute surface of the pair of planar eyeglass of described increase is relatively placed, and with original one planar optics be 90 degree place; Described two pairs of planar optics are controlled by a motor simultaneously; Described geometric parameter tester is after finishing the fiber end face cutting, and computing machine is according to Automatic Program conversion light path and finish fibre core and the test of coat; Described bias light is that the ring-type light-emitting diodes is luminous forms by one; Above-mentioned described lens all are convex lens.

Its principle of work is as follows: survey the fibre core geometric parameter earlier: optical fiber 90 end faces that at first will have coat 92 cut, and anchor clamps 14 are clamped coat 92, and anchor clamps 14 are put on the fixture stand; The coat 92 of the other end of optical fiber 90 is peeled off again, stayed fibre core 91, fibre core 91 end faces are cut, anchor clamps 24 are clamped coat 92, and part is exposed fibre core 91, and anchor clamps 24 are put on the fixture stand; Then, the light that light source 1 place sends forms parallel beam through lens 1, shine lens 2, through behind the lens 2, form the light beam of assembling, be injected in the fibre core of the optical fiber 90 that anchor clamps 14 are clamped, light arrives the end of the optical fiber of anchor clamps 24 clampings through after propagating, this end is a fibre core, the light that penetrates in the fibre core forms directional light through after the lens 3, reflexes to planar optics 32 through planar optics 31, reflex to once more in the microscope 5, be positioned at the CCD camera 6 real-time acquired signal of microscope 5 back,, send into computing machine then to image capturing system 7; In addition, because the effect of bias light 2 makes the light path of end face information after lens 3 of optical fiber also enter computing machine; Program in the computing machine drives motor and rotates, and then make

anchor clamps

14,24 in position do motion among a small circle all around up and down, finally make optical fiber be positioned at the test specification of computer screen, begin to test the fibre core geometric parameter then, up to the test of finishing all parameters of fibre core.Then, send the instruction of test coat geometric parameter by computer program, make angle of motor rotation of control plane eyeglass, make planar optics 41 from face, 42 enter light path, make

planar optics

31,32 exit opticals, at this moment, light source 1 is closed, and light source 2 is opened, and the light that light source 2 places send forms parallel beam through lens 4, shine lens 3, through behind the lens 3, form the light beam of assembling, be injected in the fibre core of the optical fiber 90 that anchor clamps 24 are clamped, light is through after propagating, arrive the end of the optical fiber of anchor clamps 14 clampings, this end is a fibre core, and the light that penetrates in the fibre core is through after the lens 2, form directional light, reflex to planar optics 42 through planar optics 41, reflex to once more in the microscope 5, be positioned at the CCD camera 6 real-time acquired signal of microscope 5 back, to image capturing system 7, send into computing machine then; In addition, because the effect of bias light 1 makes the light path of end face information after lens 2 of coat also enter computing machine; Program in the computing machine drives motor and rotates, and then make

anchor clamps

14,24 in position do motion among a small circle all around up and down, finally make coat be positioned at the test specification of computer screen, begin to test the coat geometric parameter then, up to the test of finishing all parameters of coat.

After adopting instrument of the present utility model: owing to increased light path and adopted program controlled motor to drive the mode of clamp movement, therefore, the position of optical fiber can be regulated automatically; Because program controlled motor drives plane minute surface rotation, has realized the switching of light path, therefore, once just can finish the test of all geometric parameters of optical fiber; Therefore, equipment is more intelligent, testing efficiency is improved greatly, has reduced effective cutting number of times of every optical fiber.

This paper understands the utility model exemplary embodiment and present preferred embodiment specifically, should be appreciated that the utility model design can be by other various forms enforcement utilizations, and they drop in the protection domain of the present utility model equally.

Claims

1. improved optical fiber geometric parameter tester, it comprises: light source, lens, planar optics, fiber clamp, bias light, microscope, camera, image capturing system, computing machine, printer; It is characterized in that: increased a light path in the described geometric parameter tester, a light source, lens, a bias light and pair of planar eyeglass have only been increased in the described light path, described fiber clamp is by the motion of Motor Control three-dimensional, parallel and the minute surface of the pair of planar eyeglass of described increase is relatively placed, and with original one planar optics be 90 degree place; Described two pairs of planar optics are controlled by a motor simultaneously; Described geometric parameter tester is after finishing the fiber end face cutting, and computing machine is according to Automatic Program conversion light path and finish fibre core and the test of coat; Described bias light is to be formed by a ring-type lumination of light emitting diode.