公开(公告)号：US20160187647A1

公开(公告)日：2016-06-30

申请号：US15065969

申请日：2016-03-10

Applicant: OLYMPUS CORPORATION

Inventor： Masato FUJIWARA ,  Atsuyoshi SHIMAMOTO ,  Takeharu INNAMI ,  Junichi NISHIMURA

IPC: G02B26/10 ,  G02B23/24

CPC classification number: G02B26/103 ,  A61B1/00172 ,  A61B1/07 ,  G02B23/2423 ,  G02B23/2469 ,  G02B26/10 ,  G02B26/101

Abstract: An optical fiber is vibrated at an emitting end part by a scanning part, and light is irradiated from an emitting end face of the optical fiber onto an object to scan the object. The scanning part includes a pair of first direction coils facing each other in a first direction across the emitting end part, and a permanent magnet installed as penetrating the emitting end part. The permanent magnet is magnetized in the axial direction of the emitting end part. The scanning part drives, by supplying power to the first direction coils, the emitting end part to vibrate in the first direction in the second or higher-order resonance mode, forming nodes of the vibration within the permanent magnet. When in a state of non-vibration in the first direction, a relative distance between the permanent magnet and the first direction coils is smaller than that in other directions.

Abstract translation: 光纤通过扫描部在发光端部振动，并且将光从光纤的发射端面照射到物体上以扫描物体。 扫描部分包括一对沿着第一方向相对于发射端部彼此面对的第一方向线圈，以及安装成穿过发射端部的永磁体。 永磁体在发射端部的轴向上被磁化。 扫描部通过向第一方向线圈供电，通过向第一或第二谐振模式的第一方向驱动发射端部，从而形成永磁体内的振动的节点。 当处于第一方向的非振动状态时，永磁体和第一方向线圈之间的相对距离小于其它方向的相对距离。

公开(公告)号：US20170102537A1

公开(公告)日：2017-04-13

申请号：US15385154

申请日：2016-12-20

Applicant: OLYMPUS CORPORATION

Inventor： Masato FUJIWARA ,  Takeharu INNAMI

IPC: G02B26/10 ,  G02B23/24

CPC classification number: G02B26/103 ,  A61B1/00006 ,  A61B1/00172 ,  A61B1/07 ,  G02B23/2469 ,  G02B26/10 ,  H01L41/0913 ,  H02N2/00

Abstract: An optical scanning actuator (1) includes an optical fiber (2) having a tip (2a) supported to allow vibration and includes a piezoelectric element (4) that generates a driving force by expanding and contracting in the direction of the optical axis of the optical fiber (2), the driving force driving the tip (2a) of the optical fiber (2) in a direction perpendicular to the optical axis. The optical scanning actuator (1) has rotational asymmetry or two-fold rotational symmetry about the optical axis of the optical fiber (2), and the resonance direction of the tip (2a) of the optical fiber (2) and the direction of the driving force of the piezoelectric element (4) are substantially parallel.

公开(公告)号：US20140332677A1

公开(公告)日：2014-11-13

申请号：US14340740

申请日：2014-07-25

Applicant: OLYMPUS CORPORATION

Inventor： Masato FUJIWARA ,  Atsuyoshi SHIMAMOTO ,  Junichi NISHIMURA

IPC: G02B26/10 ,  G01J1/42

CPC classification number: G02B26/10 ,  A61B1/00006 ,  A61B1/00172 ,  A61B1/063 ,  G01J1/4257 ,  G02B23/2469 ,  G02B23/26 ,  G02B26/103 ,  H04N5/2354

Abstract: Provided is an optical scanning observation apparatus including: a light source unit (30) for outputting laser light; a scanning part (23) for scanning, on an object of observation (70), a condensing position of the laser light output from the light source; and a detection unit (40) for sampling signal light obtained through scanning of the laser light, and converting the signal light into an electric signal, in which a sampling time for detecting signal light per one sampling is varied in accordance with changes in scanning rate of the scanning part (24) scanning on the object of observation (70). In this manner, variation in resolution of an image resulting from changes in scanning rate per each sampling can be reduced.

Abstract translation: 提供一种光学扫描观察装置，包括：用于输出激光的光源单元（30）; 用于在观察对象（70）上扫描从光源输出的激光的聚光位置的扫描部分（23） 以及检测单元（40），用于对通过扫描激光获得的信号光进行采样，并将信号光转换成电信号，其中每一次采样中检测信号光的采样时间根据扫描速率的变化而变化 的扫描部分（24）扫描观察对象（70）。 以这种方式，可以减少由每个采样的扫描速率的变化引起的图像的分辨率的变化。

公开(公告)号：US20180003953A1

公开(公告)日：2018-01-04

申请号：US15705364

申请日：2017-09-15

Applicant: OLYMPUS CORPORATION

Inventor： Masato FUJIWARA ,  Yuhei TAKATA

IPC: G02B26/10 ,  A61B1/06 ,  A61B1/00 ,  A61B1/04 ,  G02B23/24 ,  G02B1/11

CPC classification number: G02B26/103 ,  A61B1/00006 ,  A61B1/00057 ,  A61B1/00172 ,  A61B1/04 ,  A61B1/0684 ,  A61B1/07 ,  G02B1/11 ,  G02B23/2469

Abstract: This method is for calibrating an optical scanning apparatus that includes an optical fiber with a tip supported to allow vibration and an actuator that drives the tip of the optical fiber in a direction perpendicular to the optical axis of the optical fiber. The method includes arranging a position sensitive detector that detects a position of emitted light from the tip of the optical fiber (step S02) and detecting the position of the emitted light with the position sensitive detector while supplying light to the optical fiber and driving the tip of the optical fiber (step S03). The step of detecting (step S03) is performed using an interference fringe reducer that reduces interference fringes occurring along an optical path reaching the position sensitive detector.

公开(公告)号：US20170248784A1

公开(公告)日：2017-08-31

申请号：US15596051

申请日：2017-05-16

Applicant: OLYMPUS CORPORATION

Inventor： Masato FUJIWARA ,  Morimichi SHIMIZU

IPC: G02B26/10 ,  G02B23/24

CPC classification number: G02B26/103 ,  G02B23/2469 ,  G02B23/26

Abstract: This optical scanning actuator can improve yield and assembly efficiency. An optical scanning actuator (10) includes a piezoelectric element (14) that is joined to a displaceably supported emission end (11a) of an optical fiber (11) and displaces the emission end (11a) in a direction perpendicular to an optical axis direction of the optical fiber (11) by expanding and contracting in the optical axis direction. The piezoelectric element (14) includes an identifier (16) for identifying a polarization direction, the identifier (16) being formed physically.