Optical fiber scanner, illumination device, and observation apparatus
A technology of optical fiber scanning and lighting devices, which is applied in medical science, surgery, diagnosis, etc.
Inactive Publication Date: 2017-08-18
OLYMPUS CORP
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Problems solved by technology
Therefore, in the technology described in Patent Document 1, the assembly of the elastic part and the support part varies for each fiber scanner, and there arises a problem that the optical fiber and the illumination light emitted from the optical fiber cannot be directed toward the subject Well-aligned illumination optics for volume illumination
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Embodiment Construction
[0035] Hereinafter, an optical fiber scanner, an illumination device, and an observation device according to one embodiment of the present invention will be described with reference to the drawings.
[0036] Such as figure 1 As shown, the endoscope device (observation device) 100 of this embodiment includes: a light source 1 that generates illumination light; an illumination device 3 that irradiates an object (not shown) with illumination light; and a photodetector such as a photodiode. A device (photodetector) 5 that detects reflected light returned from the subject due to illumination light irradiation or return light such as fluorescence; and a control device 7 that controls the illumination device 3 and the photodetector 5, etc. .
[0037] The illuminating device 3 has: an optical fiber scanner 10, which has an illuminating optical fiber 11 for guiding the illuminating light emitted from the light source 1 to emit the illuminating light from the front end; Illumination l...
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The present invention improves ease of assembly by preventing variations in the assembly of an elastic part to a fixed part. Provided is an optical fiber scanner (10) equipped with: an illuminating optical fiber (11) for guiding illuminating light and emitting same from the tip; an elastic part (21) that is obtained from an elastic material and fits with the illuminating optical fiber (11) on the base end side of the tip; multiple piezoelectric elements (23), which are fixed on the side surface of the elastic part (21), are polarized in the radial direction of the illuminating optical fiber (11), and is for oscillating the illuminating optical fiber (11) via the elastic part (21) by an alternating voltage being applied in the direction of polarization; and a fixed part (25), which has a fitting hole for fitting the elastic part (21) at a position that is shifted toward the base end from the piezoelectric elements (23) of the elastic part (21) and is for supporting the illuminating optical fiber (11) in a cantilevered fashion via the elastic part (21) that has been fitted in the fitting hole. The elastic part (21) and the fixed part (25) have marks (31, 33) representing the position of assembly when the two are fitted with each other.
Description
technical field [0001] The invention relates to a fiber optic scanner, an illumination device and an observation device. Background technique [0002] Conventionally, an optical fiber scanner is known that scans an object by emitting illumination light while vibrating the tip of an optical fiber at high speed using a piezoelectric element (for example, refer to Patent Document 1). The optical fiber scanner described in Patent Document 1 has a structure in which an optical fiber is supported by an elastic portion of a substantially prismatic member to which a plurality of piezoelectric elements are pasted, and the elastic portion is assembled and held in an annular support portion. Looking glass frame. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2013-244045 Contents of the invention [0006] The problem to be solved by the invention [0007] However, the optical fiber scanner described in Patent Docu...
Claims
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IPC IPC(8): A61B1/00A61B1/06
CPCA61B1/00165A61B1/07A61B1/00188
Inventor 横田博一葛西靖明鹤田博士
Owner OLYMPUS CORP