JP3199601B2 - Optical parts surface enlargement inspection system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection apparatus for inspecting the surface shape of various optical components such as optical fiber connectors relating to optical devices constituting a communication system. The present invention relates to an enlargement inspection device.

[0002]

2. Description of the Related Art With the spread of optical communication technology, there is an increasing demand for laying an optical fiber constituting an optical communication system in a wide range and performing optical communication in a wide range. When connecting an optical fiber, the ferrule on the end face of the optical fiber connector is polished on a spherical surface, and the optical fiber core portion is brought into physical contact to connect the connectors. that time,
Since the light transmission efficiency changes depending on the polishing state of the end face of the optical fiber connector, it is necessary to inspect the end face of the optical fiber connector.

The present applicant has already proposed a portable optical fiber end face inspection apparatus (Japanese Patent Application No. Hei 6-315044).
issue). The purpose of this inspection device is to provide an inspection device for the end surface of an optical fiber connector that can easily perform the inspection of the end surface of the optical fiber connector at the site where the optical fiber is laid and that does not need to be checked directly with the naked eye. The light reflected at the end face is imaged on the CCD through an objective lens and a half mirror. The formed image of the end face of the optical fiber connector is converted into a video signal, and an enlarged image of the picked up end face can be confirmed through a CRT monitor. In addition, a battery is built in, the optical system and the imaging system are linearly arranged, and the display unit is arranged on the surface of the device in parallel with the optical system, so that the device has a portable form.

[0004]

However, in the conventional end face inspection apparatus, since the holding mechanism for holding the optical fiber connector to be inspected can hold only a specific shape, other inspection objects and inspections which cannot be removed or moved. The subject could not be easily magnified. Therefore, the degree of freedom of the inspection was low and it was inconvenient.

An object of the present invention is to provide an optical component surface enlargement inspection apparatus which can be selectively used by switching between a main unit for inspecting an end face of an optical fiber connector and an optional inspection unit for observing another inspection object.

[0006]

In order to achieve the above object, the present invention holds an optical fiber connector to be inspected, irradiates the end face of the optical fiber connector with light, and forms reflected light on an image sensor. The image of the end surface is projected on the screen by irradiating light to the optical fiber connector inspection device main body having at least the main body side electric signal connection means and the surface of another inspection target, and the reflected light is imaged on the image sensor An optional inspection unit having an optional unit-side electrical signal connection means for outputting the obtained video signal, connecting the optional inspection unit to the optical fiber connector inspection device main body, switching the optional inspection unit side to operate, and performing the inspection. Inspect the surface of another inspection object that cannot be held by the main body of the device from any direction, and view the image in front. Providing an optical component surface enlargement inspection apparatus characterized by being configured as Utsushidasu fiber optic connector testing device body side of screen.

[0007]

According to the configuration of the present invention, the main unit and the optional inspection unit are selected according to the inspection object, and the image of the main unit and the image of the optional unit are switched and displayed on the monitor of the main unit.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the appearance of an embodiment of the present invention.
The figure shows a state in which an optional inspection unit 37 is connected to the main body unit 1 via an electrical connection portion 9a. The main body unit 1 has a mounting section (fiber insertion port 12) for mounting an optical fiber connector as an object to be tested. A focus dial 3 for focusing while moving an objective lens (not shown) while watching an image on the image display unit 4; a brightness adjustment dial 5, a contrast adjustment dial 6, a power switch 7 and a power switch 7 for the image display unit 4; Grip 8 is provided.

The optional inspection unit 37 is connected to the body 10 having the interchangeable lens 12 via the lens mount 11 at the front end, the connection cord 8a, and the image of the image display unit 4 of the main unit 1. Switch 1 for selecting and switching between video on the side
The inspector can hold the body 10 with his / her hand and perform an imaging inspection toward a desired surface to be inspected.

Here, the electrical connection 9a of the optional inspection unit 37 is attached to the side surface of the main unit 1, and the changeover switch 14 is connected to the optional inspection unit 3
7, the video of the optional inspection unit 37 is displayed on the video display unit 4 of the main unit 1.

Next, FIG. 2 is a view for explaining the internal configuration of the main unit of the optical fiber connector inspection apparatus and the optional inspection unit. In the figure, a main unit 1 includes an optical unit 25 including a fiber holding mechanism, an objective lens, a half mirror, a condenser lens, an illumination 27 and a CCD 28, a signal processing circuit 29, a control circuit 30, a video switch 31, a video display CRT 26. And a power supply 32 such as a lead storage battery.

On the other hand, the optional inspection unit 37 comprises a body 10 and an electric connection portion 9a. The electric connection portion 9a has a control circuit 39 and a changeover switch 14 built therein, and a video signal line from the control circuit 30; Power supply 32 (control circuit 3
0), a switching signal line from the video switching unit 31, and a detachable slide unit 41. Further, the body 10 incorporates an objective lens in the interchangeable lens 12 and an optical unit 38 having the same configuration as the main body unit 1 thereafter, and a signal processing circuit 34 having the same configuration as the signal processing circuit 29 and the control circuit 30. ing.

Here, when the optional inspection unit 37 is connected to the main unit 1 and the changeover switch 14 is switched to the optional inspection unit 37, the video switch 31 of the main unit 1 is switched, and the video from the main unit 1 is switched to the option. The image is switched to the image of the inspection unit 37 and displayed on the CRT 26 of the image display unit 4.

[0014]

As described above, according to the configuration of the present invention, a handy optional unit other than the end face of the optical fiber connector can be applied to the object to be observed, and the enlarged image can be confirmed on the CRT screen. It is possible to observe for a long time with the naked eye, and more than one person can check at the same time, the degree of freedom of inspection is expanded, it is excellent in portability, and as optical fiber laying work will be widespread in the future,
Various optical components can be inspected on site.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main unit 3 Focus dial 4 Video display part 7 Power switch 10 Body 12 Interchangeable lens 14 Changeover switch 25, 38 Optical unit 26 CRT 28, 34 CCD 29, 35 Signal processing circuit 30, 39 Control circuit 31 Video switch 32 Power supply 37 Optional inspection unit

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Katsumi Tsuji 2800 Nagachi, Okaya-shi, Nagano Kyocera Corporation Nagano Okaya Plant Co., Ltd. Government Eiji Tanabe (56) References JP-A-63-222206 (JP, A) JP-A-8-170908 (JP, A) JP-A 8-278119 (JP, A) (58) Fields investigated (Int. Cl ^7, DB name) G01M 11/00 -. 11/02 H04N 7/18 G01N 21/84 - 21/958

Claims (1)

(57) [Claims] 1. An optical fiber connector to be inspected is held, an end face of the optical fiber connector is irradiated with light, and reflected light is imaged on an image pickup device to project an image of the end face on a screen. An optical fiber connector inspection apparatus main body having signal connection means, and an optional unit side electric signal connection for irradiating light to the surface of another inspection object, forming reflected light on an image sensor, and outputting an obtained video signal An optional inspection unit having means is connected to the optical fiber connector inspection device main body, the optional inspection unit is switched to operate, and the surface of another inspection target that cannot be held by the inspection device main body can be freely oriented. And inspect the image on the screen of the main body of the optical fiber connector inspection device. Optical parts enlarged surface inspection apparatus characterized by being configured to Suyo.