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Optical measurement system

  • US 10,444,159 B2
  • Filed: 06/04/2015
  • Issued: 10/15/2019
  • Est. Priority Date: 06/06/2014
  • Status: Active Grant
First Claim
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1. An optical measurement system configured to perform optical measurement of a subject and to have an optical waveguide sensor chip mounted thereon, the optical waveguide sensor chip having a space for accommodating the subject, the space being defined by a plurality of surfaces including a first surface on which a functional layer is formed and along which an optical waveguide part is provided, the optical measurement system comprising:

  • a holding device configured to hold a bottom surface of the optical waveguide sensor chip, the holding device including a first window and a second window arranged along the optical waveguide part of the optical waveguide sensor chip so as to be spaced apart from the first window;

    a light transceiver configured to emit an incident light to be incident on the optical waveguide sensor chip through the first window, and receive output light that has passed through the first surface via the optical waveguide part from the second window;

    processing circuitry configured to process the output light to acquire information on the subject; and

    a plurality of contact sensors configured to detect whether all contact states are ON in two or more detection positions located along an array direction of the first window and the second window to provide detection results, whereinthe processing circuitry is further configured to determine that the bottom surface of the optical waveguide sensor chip is in contact with the holding device based on the detection results from the contact sensors,the contact sensors are detection switches configured to be pressed down by the bottom surface of the optical waveguide sensor chip,for each contact sensor of the plurality of contact sensors, a position of the contact sensor satisfies L<

    A(1−

    (H/C)), A being a distance between a fixed holder and a movable holder, L being a distance between the fixed holder and the contact sensor, C being a height of the fixed holder, and H being a height of the contact sensor when the contact sensor is pressed down to be in the ON state, andfor one of the plurality of contact sensors, the position of the contact sensor further satisfies M<

    (1−

    B(H/D)), M being a distance in the left-right direction between a center axis of the contact sensor and a left contact part, B being a distance in the left-right direction between a right contact part and the left contact part, and D being a height of the left contact part,wherein the holding device includes;

    the fixed holder;

    the movable holder configured to hold the optical waveguide sensor chip against the fixed holder from two of four side surfaces of the optical waveguide sensor chip; and

    a mechanism configured to bias the movable holder toward the fixed holder.

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