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公开(公告)号：US20200037849A1
公开(公告)日：2020-02-06
申请号：US16654090
申请日：2019-10-16
Applicant: OLYMPUS CORPORATION
Inventor： Tadashi ITO , Sho NAKAMURA
Abstract: The endoscope apparatus includes an endoscope and a video processor. The endoscope apparatus has a voice coil motor provided in a distal end portion of an insertion portion of the endoscope and having a coil with a resistance component, and a signal wire inserted into the insertion portion and connected to both ends of the coil, detects at least one value of a current supplied to the signal wire and a voltage applied to the signal wire, calculates power consumption of the coil from the at least one value detected and resistance value information of the resistance component, and executes a predetermined process based on the calculated power consumption of the coil and power consumption threshold information.
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公开(公告)号：US20180292641A1
公开(公告)日：2018-10-11
申请号：US16008194
申请日：2018-06-14
Applicant: OLYMPUS CORPORATION
Inventor： Tadashi ITO
Abstract: An optical unit includes: a fixing portion including a front frame portion that holds an object-side fixed lens group, a rear frame portion that holds an image-side fixed lens group or an image sensor, and a fixing portion main body formed by using a non-magnetic material; a moving portion that holds a moving lens group and that is arranged on an inner side of the fixing portion main body so as to be slidable with respect to the fixing portion main body; and a voice coil motor configured to move the moving portion along a direction of the optical axis relative to the fixing portion main body, and including a magnetic portion magnetized in a direction intersecting an optical axis of the object-side fixed lens group, and a coil located on an outer side of the fixing portion main body with respect to the magnetic portion.
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公开(公告)号：US20180275391A1
公开(公告)日：2018-09-27
申请号：US15992743
申请日：2018-05-30
Applicant: OLYMPUS CORPORATION
Inventor： Tadashi ITO
CPC classification number: G02B23/2438 , G02B7/021 , G02B7/08 , G02B7/10 , G02B7/102 , G02B23/2469 , G02B23/26
Abstract: An optical unit includes a main unit holding an anterior frame holding a first lens and a rear frame holding a second lens; a movable portion holding a movable lens between the first and second lenses or the image sensor and being slidable against the main unit; a voice coil motor including a magnetic portion disposed in the movable portion and polarized in a direction intersecting an optical axis of the first lens, and a coil positioned on an outside in the radial direction of the main unit; and a biasing member biasing the movable portion to be closer to the main unit, using magnetic force caused by the magnetic portion. In the main unit, a first dimension in a first direction parallel to a magnetization direction of the magnetic portion exceeds a second dimension in a second direction perpendicular to the first direction and the optical axis.
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公开(公告)号：US20180081164A1
公开(公告)日：2018-03-22
申请号：US15823757
申请日：2017-11-28
Applicant: OLYMPUS CORPORATION
Inventor： Tadashi ITO
Abstract: An optical unit includes: a fixing part including a front frame portion, a rear frame portion, and a fixing part main body; a movable part arranged slidably relative to the fixing part main body; and a voice coil motor including a magnetic portion, and a coil arranged at the fixing part main body and positioned on a radially outer side of the fixing part main body with respect to the magnetic portion, the voice coil motor being capable of moving the movable part relative to the fixing part main body along a direction of the optical axis. A maximum dimension of the fixing part main body in a first direction parallel to a magnetization direction of the magnetic portion is greater than a maximum dimension of the fixing part main body in a second direction perpendicular to the first direction and the direction of the optical axis.
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