Actuator apparatus, image pickup apparatus and endoscopic apparatus

A technology of an actuator device and an imaging device, which is applied in the direction of endoscopes, instruments, telescopes, etc., and can solve the problems of miniaturization of the front end of the endoscope, that is, difficulty in reducing the diameter, difficulty in miniaturization of the connecting part, and poor jointability, etc.

Inactive Publication Date: 2011-07-27
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the technology of the above-mentioned Patent Document 1, when the front end and the base end of the coil spring formed of SMA material are respectively provided with two lead wires for grounding and for supplying a drive signal, since the actuator is driven Since the lens frame moves, it is necessary to bend the lead wire connected to the front end for wiring, and there is a problem of complicated structure
[0006] Also, for SMA, poor bonding properties due to solder, adhesive, etc.
Therefore, it is difficult to miniaturize the connecting portion between the SMA wire and the lead wire, and it is necessary to bend the lead wire in order to provide a space for the lead wire to move.
[0007] Therefore, it is difficult to reduce the size of the imaging device itself, and as a result, there is a problem that it is difficult to reduce the size of the tip of the endoscope, that is, to reduce the diameter.

Method used

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  • Actuator apparatus, image pickup apparatus and endoscopic apparatus
  • Actuator apparatus, image pickup apparatus and endoscopic apparatus
  • Actuator apparatus, image pickup apparatus and endoscopic apparatus

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no. 1 Embodiment approach

[0053] First, use Figure 1 to Figure 8 The present invention will be described. Figure 1 to Figure 8 Regarding the first embodiment of the present invention, figure 1 It is a structural diagram of the imaging device of the electronic endoscope, figure 2 is along image 3 The profile of the II-II line, image 3 It is the front view of the front end of the endoscope, Figure 4 is along figure 1 Sectional view of line IV-IV, Figure 5 yes Figure 4 Enlarged view of part V of Figure 6 is the structure diagram of the insulating ball, Figure 7 is the structure diagram of other insulating balls, Figure 8 It is an enlarged view of the moving part of the lens.

[0054] In this embodiment, for figure 1 The illustrated imaging unit 1 that moves the internal lens forward and backward will be described. The imaging unit 1 constitutes an imaging device used in an endoscope and is used to realize a focusing function or a zoom / telephoto function. In this imaging unit 1 , an ...

no. 2 Embodiment approach

[0085] Next, use Figure 9 The actuator 2 of the imaging unit 1 of the second embodiment will be described. In addition, in the following description, the same code|symbol is attached|subjected to the same component as 1st Embodiment, and description is abbreviate|omitted, and only a different part is demonstrated. and, Figure 9 The second embodiment of the present invention is equivalent to the first embodiment Figure 4 sectional view.

[0086] In this embodiment, instead of the SMA wire 28 for GND in the first embodiment, a wire 51 made of a conductive material such as stainless steel or steel is used. One end of the wire 51 on the base end side is crimped by the second crimping portion 29 and is electrically connected to the GND cable 27 by soldering. On the other hand, like the SMA wire 8 of the first embodiment, the other end of the front end side of the wire 51 is hooked by the insulating ring 12 and folded back (refer to Figure 6 ), through the insulating pipe 1...

no. 3 Embodiment approach

[0092] Next, use Figure 10 The actuator 2 of the imaging unit 1 of the third embodiment will be described. In addition, in the following description, the same code|symbol is attached|subjected to the same component as 1st and 2nd embodiment, description is abbreviate|omitted, and only a different part is demonstrated. and, Figure 10 The third embodiment of the present invention is equivalent to the first embodiment Figure 4 sectional view.

[0093] The actuator 2 of the present embodiment is configured such that an SMA wire 54 is connected to the GND side of the wire 51 of the second embodiment. In addition, the SMA wire 54 of this embodiment may replace the SMA wire 28 for GND of 1st Embodiment.

[0094] One end of the SMA wire 54 on the proximal side is crimped by the second crimping portion 29 and is electrically connected to the GND cable 27 . In addition, the other end on the front end side of the SMA wire 54 is crimped and connected together with the wire 51 by a...

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Abstract

The invention provides an actuator apparatus, an image pickup apparatus and an endoscopic apparatus; by realizing the actuator apparatus including a simple and small structure, diameters of the image pickup apparatus of the actuator apparatus and the endoscopic apparatus can be thinned. The actuator apparatus (2) of the invention is characterized in that, the actuator apparatus (2) includes a moving unit which can freely move forwards and backwards; a force-urging unit (10) which urges the moving unit in one direction; and wires (8, 28) fixed to the moving unit, two ends of the wire are connected with a driving source which enables the moving unit to move in another direction against the urging force by the force-urging unit.

Description

technical field [0001] The present invention relates to an actuator device, an imaging device, and an endoscope device in which diameters have been reduced. Background technique [0002] As is well known, endoscope devices are widely used for observation, treatment, etc. inside the human body (body cavity), or for inspection, repair, etc. in industrial equipment. In recent years, there has been an endoscope device using an imaging device capable of variable focus function and zoom / telephoto function for a photographed image by moving the observation optical system in the direction of the photographing optical axis. [0003] For example, Patent Document 1 discloses such a technique of making the lens frame variable for realizing the focusing function of the imaging device and the like. This patent document 1 discloses a technology in which one end of a coil spring formed of a shape memory alloy (Shape Memory Alloys, hereinafter referred to as "SMA") wire is fixed to a protru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/00G02B23/24A61B19/00G02B23/26A61B1/04
CPCA61B1/00096A61B1/00188A61B1/00G02B23/24
Inventor 岩崎诚二
Owner OLYMPUS CORP
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