Anritsu Corporation

Yasuhiro Miyake

Taichi Murakami

Norio Nakayama

Shigeo Hori

Ryota Takasu

Takashi Oshimi

Keita Masuhara

Yoshifumi Imazu

Masaaki Tamakoshi

Soichiro Kai

Masayuki Shinohara

An end face inspection apparatus which inspects an end face of an test object, and includes optical system causing an image acquisition unit to form an image of an end face of a held test object, focusing degree changing means for changing a distance between the end face of the test object and a focal position of the optical system, and a control unit processing image data acquired in the image acquisition unit. The end face inspection apparatus acquires a series of image data which is output from the image acquisition unit at a preset time interval while the distance between the end face of the test object and the focal position of the optical system is changed, determines whether or not each piece of the image data is focused, and selects focused image data as image data for end face inspection.

End face inspection apparatus and focused image data acquisition method

Provided are a measurement result display device and a measurement result display method which are capable of making a list of how much difference is present between an allowable value and a measurement value of each measurement item measured by a measuring instrument, in a visually discriminable state. An allowable upper limit value indicatorand an allowable lower limit value indicatorare disposed at display positions which are set in advance in a measurement result imageas positions indicating an allowable upper limit value and an allowable lower limit value, and a measurement value indicatoris disposed at a display position calculated from display positions of the allowable upper limit value indicatorand allowable lower limit value indicatorand a measurement value measured by the measurement unit

Measurement result display device and measurement result display method

An optical time domain reflectometer includes: an OTDR measurement unit; an event detection unit that detects an event using the measurement result of the OTDR measurement unit; a display unit that displays a plurality of icons indicating events in an event display region Aand displays information of an event, which is located in a specific region Aof the event display region A, in an information display region A; an operation detection unit that detects a swipe operation in the event display region A; and an event-of-interest changing unit that scrolls the events displayed in the event display region Aaccording to the swipe operation to change the display of the information display region Ato information corresponding to the event indicated by the icon located in the specific region A.

Optical time domain reflectometer and display method of optical time domain reflectometer

In order to easily and efficiently carry out various characteristic evaluations of optical fibers which have been laid down, a table file which is for carrying out association of optical fibers serving as measuring objects with measured data when the optical fibers have been measured, based on optical fiber management information provided in advance of undertaking a cable laying/maintenance construction, such as various types of information on the optical fibers serving as measuring objects, and information on a construction site, and the like, is created at an external terminal. An OTDR measures the optical fibers serving as measuring objects based on the table file created at the external terminal, and stores measured result data in which the measured optical fibers and measured data of the optical fibers have been associated with one another, and edited result data expressing edited contents when the table file and the measured result data have been edited. The external terminal generates a report based on the measured result data and the edited result data stored in the OTDR.

Optical time domain reflectometer, and optical fiber measuring method and optical fiber measuring system using the same

A light pulse generator is connected with one end of an optical fiber which selectively emits light pulses of a plurality of wavelengths to the optical fiber. A photodetector outputs a signal corresponding to the strength of the light reflected from the optical fiber. A storage unit stores the signal output from the photodetector for each wavelength. A processor determines the position and characteristic of an event based on the waveform data for each wavelength stored in the storage device. A display device has first and second display areas. A display controller allows the first display area to display the waveform data for each wavelength stored in the storage unit in a discriminable manner, and allows the second display area to display a list of positions and characteristics of events for each wavelength determined by the processor.

OPTICAL TIME DOMAIN REFLECTOMETER WHICH MEASURES AN OPTICAL FIBER WITH DIFFERENT WAVELENGTHS ACCORDING TO AN ORDER AND COLLECTIVELY DISPLAYS WAVEFORM DATA AND A LIST OF EVENTS FOR EACH WAVEFORM IN THE SAME SCREEN

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Kanagawa, Japan

Yasuhiro Miyake