Clamp device for optical plug and interferometer comprising same

Abstract

The invention provides a clamp device for optical plug connector, capable of holding a plug member consisting of an inner cylinder and an outer cylinder in a highly reproducible state independently from the installation manner thereof. This device comprises an outer cylinder rotation regulating member 340 which makes contact with the outer cylinder 402 when a plug 400 is installed to regulate the rotation of the outer cylinder 402 around a central axis W; a guide cylinder 313 which makes contact with a ferrule 420 in a state where the rotating of the outer cylinder 420 is regulated to regulate movement of the ferule 420 in a direction right-angled to the central axis W; and an inner cylinder positioning member 320 which makes contact with the inner cylinder 404 in a state where the movement of the ferrule 420 is regulated, and positions the inner cylinder 404 by applying a pressing force right-angled to the central axis W to the inner cylinder 404.

Description

technical field [0001] The present invention relates to the use of a micro-interferometer device (also referred to as "interference microscope device") to measure and analyze the shape of the tip of a ferrule (ferrule), etc. The technique of positioning in a measurement system, particularly, relates to a clamping device for an optical connector suitable for the case where an inner cylinder and an outer cylinder constitute a plug member holding pins, and a micro-interferometer device equipped with the same. Background technique [0002] Conventionally, the present applicant has proposed a clamping device for an optical connector holding a ferrule to be measured when measuring the amount of spherical eccentricity on the front end surface of the ferrule with a micro interferometer. Positioning is maintained with respect to the micro-interferometer device (see Patent Documents 1 and 2 below). [0003] Generally, an optical connector has a key (or a key groove) that serves as an...

AI Technical Summary

Problems solved by technology

In the optical connector held in such an inappropriate state, since the relative positions of the pins and the plug part are different between the time of measurement and the time of use, or the reproducibility is low, there is a concern that highly reliable measurement results cannot be obtained.

[0010] In addition, regarding an optical plug, there is a plug member composed of an inner cylinder and an outer cylinder (refer to the above-mentioned patent document 3). However, in the above-mentioned clamping device, the case of holding the optical plug thus constituted in a highly reproducible state has not been sufficiently studied.

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