JPS58187905A - Remote focusing device of image pickup part of image fiber scope - Google Patents

Abstract

PURPOSE:To execute focusing, etc. without enlarging the volume of vicinity of an image pickup part, by coupling the tip of a transmitting member which runs along an image fiber scope and also is rotatable in the circumference of the image fiber scope, to a focusing ring. CONSTITUTION:A titled device is provided with an image fiber scope 1, an image pickup part 2 containing a lens, an image receiving part 3, an image fiber 4, a housing 5 of the image fiber scope, a focusing ring 6, and a feed screw 7. The focusing ring 6 is fitted to the image fiber scope 1 so as to be rotatable, and the feed screw 7 is screwed to a screw of the inside circumference of the focusing ring 6 and also is fitted to the image fiber scope 1 so as to be movable in the axial direction only. The image pickup part 2 is fixed to the tip of the feed screw 7 so as to be focused by forward and reverse turns of the focusing ring 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device for an imaging section of an image fiberscope.

An image fiberscope is one of the devices that transmit images using optical fibers, and is widely used for observing dangerous or narrow places that are inaccessible to observers.

Such an image fiberscope is provided with an imaging section at its distal end and a receiving section at its proximal end. Regarding the imaging unit (・Well, focusing of the imaging lens or a wide field of view is required.The focus adjustment mechanism is a feed screw that screws into the inner circumference of the focus adjustment ring, or There are systems that use rotational force to focus, such as those that use a cylinder with a spiral groove that engages with the bottle of the image fiberscope. A rotating mechanism is sometimes provided to change the direction of the optical axis so that the optical axis can be seen clearly.
: Rotate to change viewing direction.

When adjusting the imaging unit by operating the various mechanisms mentioned above, there is a technology that automatically adjusts using a motor or Varne motor (hereinafter simply referred to as a motor) as a drive source, but conventionally, a motor is placed very close to the imaging unit. '-Yu is installed, so the imaging section N
Due to its large size, it was not suitable for observing objects in narrow spaces, narrow pipes, or through small diameter holes. In addition, since humans cannot enter such places, adjustments cannot be made at all without using a motor.

SUMMARY OF THE INVENTION In view of the problems of the prior art described above, it is an object of the present invention to provide an apparatus that can perform focusing without increasing the bulk of the area around the imaging unit. This objective can be achieved by attaching a transmission member to the outer periphery of the one-image fiberscope so as to be movable in the circumferential direction, and by connecting the distal end of the transmission member to the rotating parts of various adjustment mechanisms. The base end of this transmission member is quite close to the imaging unit, so even if someone is in a narrow place, the base end of the transmission member will be outside or in a wide area, so it will be difficult for people to use it. It can be turned by hand to the sb of the image fiber scope, and this allows for remote control of sybint adjustment, etc. Further, by driving the base end of the transmission member with a motor, automatic adjustment can be performed without increasing the bulk of the imaging section. The present invention will be described below with reference to the drawings.

The figure shows an embodiment of the invention. In the figure, 1 is an image fiberscope, 2 is an imaging section containing a lens, 3 is a receiver section, 4 is an image fiber, and 5 is the outer skin of the image fiberscope, and the focus adjustment mechanism itself is a common one. . 6 is a bottle) N adjustment ring, T is a hollow feed screw. Focus adjustment ring 6 is image fiberscope 1
The feed screw T is screwed into a screw on the inner periphery of the focus adjustment ring 6, and is attached to the image fiberscope 1 so as to be able to move to the right only in the axial direction. The imaging unit 2 is permanently located in the sales area of the feed screw 7.

Therefore, when the focus adjustment ring 6 is rotated forward or backward, the transmission p screw T moves back and forth, and the image is focused.

In this embodiment, for the above-mentioned imaging unit, a pipe-shaped sleeve 8 is placed as a transmission member on the outside of the outer skin 5 of the Inno-Shift Iberscope 1, and the tip 91A1 of the sleeve 8 is fixed to the focus adjustment ring 6 with a screw S. are doing. In addition to the pipe-shaped sleeve 8, the transmission member may be a split-shaped sleeve or a rod.

Any type of transmission member may be used as long as it can rotate around the image fiber scog 1, and it does not matter whether the two are in contact or apart. In addition, the connection between the transmission member and the focus adjustment ring 6 is sufficient as long as the rotation of the transmission member is transmitted to the focus adjustment ring 6, and in addition to screwing, for example, in the case of the sleeve 8, a ring gear is formed on the inner and outer peripheries of both. It is also possible to insert gears between these two to create a meshing connection.

Even with the above-mentioned device, focus adjustment can be remotely controlled by manually rotating the transmission member, and the imaging section 2 can be placed in a fairly narrow space. In the case of manual operation, it is easier to operate by passing an operating ring through the image fiberscope 1 and attaching it to the base end of the transmission member.

In the illustrated embodiment, the manual operation is further advanced to focus adjustment using the motor 10. That is, the ring gear 11 is attached to the outer periphery of the base end of the sleeve 80, and the motor 1G+7) rotating shaft 1
The gear 12 of the 0 & destination port and the ring gear 11 are meshed.

Therefore, by operating the motor 10, the sleeve 8 rotates, and even if the camera is driven by the motor, the focus can be adjusted remotely, and since the imaging section 2 does not become bulky at all, it is possible to observe even a narrow place. In addition to gears, the rotational force between the rotating shaft 10 & of the motor 10 and the sleeve 8 may be transmitted by a pulley, a bottle-shaped protrusion, a friction plate, etc., or a mechanism in which a belt is attached to the sleeve 8 itself may be used. Of course, in a rotational force transmission mechanism using a gear, etc., it is necessary that the original II] 1m and the driven side have an appropriate positional relationship, so the embodiment shown in the figure includes a positioning member 13 for centering the sleeve 8 and the rotating shaft 1Oa of the motor 10. There is. This positioning member 13 is an annular portion fitted onto the outer periphery of the outer sheath of the image fiberscope 1, and has a cylinder f113& on the distal end side that fits into the inner periphery of the sleeve 8, and the sleeve 8 is centered by this cylinder portion 13m. be done. Of course, for this cylindrical portion 13m, the sleeve 8
can slide. The motor 10 may be fixed at an appropriate position on the image fiber scope 1 via a swivel, but centering is easier if it is installed at the base end of the positioning member 130.

The present invention has been described above in detail with reference to the drawings, but in addition to pin adjustment, for example, the hoof rotation mechanism for lateral force observation can also be remotely controlled using a similar configuration.

[Brief explanation of the drawing]

The figure is a configuration diagram showing an embodiment of the present invention. In the figure, 1 is an image fiberscope, 2 is an imaging unit, and 3
is an image receiving part, 6 is a focus adjustment ring, T is a hollow feed screw, 8 is a transmission part (sleeve), 9 is a screw, 10 is a motor, 11 is a ring gear, 12 is a gear, 13 is a positioning part 4
13m is a cylindrical portion that enters the sleeve. Patent applicant: Sumitomo Electric Industries, Ltd.

Claims (4)

[Claims] (1) Pin F of the 5th imaging section of the image fiberscope
In a device that performs y4 adjustment by rotation of a pin), an image in which the tip of a transmission member that is attached to an image fiberscope and is rotatable around the circumference of the image fiberscope is connected to a focus adjustment ring. A remote adjustment device for the imaging section of a fiberscope. (2) In a device that adjusts the focus of the imaging section of an image fiberscope by rotating a focus adjustment ring, a transmission part whose tip is coupled to a bintle adjustment ring and is rotatable along and around the image fiberscope. 1. A remote adjustment device for an imaging section of an image finoscope, characterized in that the device is equipped with a side and a pulse motor coupled to a base end of the transmission member for rotationally driving the transmission member. (3) Patent 6-) characterized in that the above motor or pulse motor is mounted on an image fiberscope.
, A remote adjustment device for an imaging section of an image fiberscope according to claim 2. (4) The transmission member is positioned for rotation around the image fiberscope in contact with a positioning unit having a cylindrical portion attached to the image fiberscope, and a motor or a pulse motor is installed on the positioning member. A remote adjustment device for an imaging section of an image fiberscope according to claim 2.