JPH04162011A - Lens-barrel fine motion device of telescope - Google Patents

Abstract

PURPOSE:To make continuous and wide-range fine motion of a lens barrel in vertical direction and enhance the operating effectiveness by furnishing the fine motion device with a horizontal shaft installed rotatably on a supporting member, a receptacle table to perform vertical angle adjustment of the lens-barrel, a gearing mechanism to make fine rotation of the horizontal shaft, and an operational mechanism which puts the horizontal shaft in free state where coarse motion rotating is possible. CONSTITUTION:When a handle 24 is rotated in the un-screwing direction from an actuating piece 23a on the left side, a sleeve 11 of a gearing mechanism 10 is uncoupled from a horizontal shaft 6. Thus the shaft 6 is put in state for rotating free, and a lens-barrel 1 is coarsely moved in the vertical direction. If the handle 24 is turned in the direction of screwing with the actuating piece 23a, the sleeve 11 is coupled with the shaft 6, and the coarse motion of the mirror barrel 1 is stopped. If in this condition a dial 15 is turned, a circular gear 12 make slow speed rotation to cause slow speed rotating of the shaft 6 as in a single piece, and the lens-barrel 1 makes fine motion in the vertical direction. Because this fine motion is made with the rotation of the circular gear 12, the shaft 6 rotates in a wide range. Thus the fine motion in the vertical direction can be made continuously and over a wide-range and the operating effectiveness is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lens barrel fine movement device for a telescope that can continuously perform fine movement of a lens barrel in the vertical direction over a wide range.

[Prior Art] FIG. 4 shows a conventional device capable of slightly moving the lens barrel of a telescope in the vertical direction. The lens barrel 100 of the telescope is the pedestal 101
The lower part of the cradle 101 is attached to a rotary base 102 so as to be rotatable in the vertical direction. Rotating base 10
2 is rotatably attached to a support member (not shown) such as a tripod, and the field of view of the lens barrel 100 can be changed in the left-right direction by its rotation.

A fine movement device 1) 0 is attached diagonally to the rotating base 102 and the lens barrel 100. Fine movement device 1) 0 is a vibrator 1) whose lower end is rotatably supported on a rotating base 102.
1, and a rod 1)2 whose lower part is inserted into the vibrator 1)1 and whose upper part reaches the lens barrel 100. rod 1
) 2 has a threaded part 1.13 formed in the middle part, and this threaded part 1) 3 is the dial 1 attached to the vibrator 1.1).
)4 is screwed together.

Further, the upper part of the rod 1) 2 is slidably inserted into a slide guide 1) 5 provided in the lens barrel 100.
A screw 1) 6 is attached to the slide guide 1) 5,
The slide of the rod 1) 2 is locked by tightening the screw. In such a device,
Loosen 6 and slide guide] 15 to rod] 12
By rotating the lens barrel 100 in the vertical direction with the lens barrel 100 freely slidable, coarse movement of the mirror @100 in the vertical direction is possible.

Then, by tightening the screws 1) 6 and locking the slide of the rod 1) 2, by rotating the dial 1) 4, the rod 1) 2 moves slightly forward and backward relative to the vibrator 1) 1, allowing slight vertical movement. It can be carried out.

[Problems to be Solved by the Invention] However, in conventional devices, the range of fine movement in the vertical direction of the lens barrel is determined by the length of the threaded portion 1) 3 of the rod 1) 2, so the range is limited and observation is difficult. If the object is continuously moving, it is inconvenient that observation using microtremors cannot be performed continuously.

Furthermore, since switching between coarse and fine movement of the lens barrel is performed at a position away from the eyepiece, there is also the disadvantage that it is difficult to operate.

The present invention has been made in consideration of these circumstances, and is a telescope lens barrel fine movement device that can continuously and widely perform fine movement of the lens barrel in the vertical direction and has improved operability. The purpose is to provide the following.

[Means for Solving the Problems] In order to achieve the above object, the present invention supports a horizontal shaft rotatably attached to a support member and a lens barrel of a telescope, and rotates integrally with the horizontal shaft to rotate the mirror. A pedestal that adjusts the angle of the cylinder in the vertical direction; a gear mechanism that can be connected to and released from the horizontal axis and that slightly rotates the horizontal axis while connected to the horizontal axis; and this gear mechanism. This is a lens barrel fine adjustment device for a telescope, characterized in that it is equipped with an operation mechanism that connects and releases the connection with the horizontal axis, and when the connection is released, the horizontal axis is placed in a free state capable of coarse rotation.

[Function] In the above configuration, when the gear mechanism and the horizontal shaft are connected by the operation mechanism, the horizontal shaft rotates slightly and the lens barrel can be slightly moved in the vertical direction. Since it rotates across the body, fine movements in the vertical direction can be made continuously and over a wide range. Further, since the operating mechanism connects and releases the connection between the gear mechanism and the horizontal shaft, it is possible to easily switch between coarse and fine movement of the mirror opening.

[Example] Hereinafter, the present invention will be specifically explained by referring to an illustrative example.

FIG. 1 shows the overall configuration of one embodiment of the present invention, in which a telescope lens barrel 1 is supported on a pedestal 2. As shown in FIG. Further, a rotating base 5 is rotatably attached to the head 4 of the tripod 3 serving as a supporting member, and a pedestal 2 is attached to an arm portion 5a extending upward from the rotating base 5. The rotating base 5 changes the angle of the lens barrel 1 in the left-right direction by rotating on the head 4, while the pedestal 2 is rotatably attached to the arm portion 5a of the rotating base 5. The vertical angle of the lens barrel can be changed.

FIGS. 2 and 3 show details of the internal structure, and the structure will be explained below with reference also to FIG. 1.

A horizontal shaft 6 is rotatably attached to the arm portion 5a of the rotating base 5, and the horizontal shaft 6 is inserted through the pedestal 2. Then, by screwing the setscrew 7 into the horizontal shaft 6 and the pedestal 2, the horizontal shaft 6 and the pedestal 2 are coupled, and the pedestal 2 rotates integrally with the horizontal shaft 6. ing. The left end portion of the horizontal shaft 6 is extracted from the arm portion 5a,
A gear mechanism 10 and an operating mechanism 20 are attached to this extracted portion.

The gear mechanism 10 includes a sleeve 1) into which the extracted portion of the horizontal shaft 6 is inserted, a circular gear 12 formed by partially extending the sleeve 1) in the circumferential direction of the horizontal shaft 6, and a circular gear 12 formed by partially extending the sleeve 1) in the circumferential direction of the horizontal shaft 6. It includes a worm gear 13 that meshes with the gear 12.

The worm gear 13 is rotatably supported by a bracket 8 attached to the side surface of the arm portion 5a of the rotating base 5, and its gear shaft is connected to a dial 15 via a joint member 14. Therefore, the worm gear 13 is rotated by operating the dial 15, and since the dial 15 is pulled out to the eyepiece by the joint member 14, the operation is easy.

This gear mechanism IO can be connected to and released from the horizontal shaft 6, and when the worm gear 13 rotates while connected to the horizontal shaft 6, the horizontal shaft 6 slightly rotates.
The pedestal 2 integrally rotates slightly, and the lens barrel 1 is slightly moved in the vertical direction. On the other hand, when the horizontal shaft 6 is disconnected from the horizontal shaft 6, the horizontal shaft 6 is free to rotate, so that the lens barrel l can make coarse vertical movements via the pedestal 2.

The operating mechanism 20 connects and disconnects the gear mechanism 10 and the horizontal shaft 6, and connects a cylinder 22 fixed to the end of the horizontal shaft 6 with a pin 2], and connects the cylinder 22 to the horizontal shaft. It includes an annular band 23 extending in the direction to hold the sleeve 1) of the gear mechanism 10, and a handle 24 attached to the annular band 23 and extending in the direction of the eyepiece.

The annular band 23 that holds the snout 1) has a pair of left and right working pieces 23a and 23b that face each other and rise upward (see FIG. 3). The working pieces 23a, 23b face each other with a predetermined interval, and these working pieces 23a,
A handle shaft 25 of the handle 24 is attached to 23b. The handle shaft 25 has a flange portion 26 and a threaded portion 27 formed in this order at its distal end, and the threaded portion 27 is screwed into the left operating piece 23a. On the other hand, the right action piece 23b
The threaded portion 27 is loosely inserted, and this operating piece 23
The collar portion 26 is in contact with b.

In such an operating mechanism 20, when the handle 24 is rotated, the distance between the operating pieces 23a and 23b changes due to the action of the collar portion 26 and the threaded portion 27, and when the distance becomes narrower, the annular band 23 moves closer to the sleeve 1). Tighten the sleeve 1)
(that is, the gear mechanism 10) and the horizontal shaft 6, while when the distance becomes wider, this connection is released. In this case, since the handle 24 is pulled out toward the eyepiece, the connection and release operations can be easily performed.

The cylindrical body 22 on which the annular band 23 is integrally formed is made such that it can be tightened by the annular band 23 and restored.
It is made of elastic metal.

Next, the operation of this embodiment will be explained.

When the handle 24 is rotated in the direction opposite to the direction in which it engages with the left action piece 23a, the elasticity of the annular band 23 causes the action piece 23a to
, 23b becomes wider, thereby increasing the diameter of the annular band 23, and the connection between the sleeve 1) of the gear mechanism 10 and the horizontal shaft 6 is released. In this state, the horizontal shaft 6 is free to rotate, so that the lens barrel 1 supported by the horizontal shaft 6 via the pedestal 2 can be roughly moved in the vertical direction.

On the other hand, the handle 24
When rotated, the action piece 23 is pressed by the flange 26.
The gaps between a and 23b become narrower, and the annular band 23
] (to increment by -1, the sleeve] 1 and the horizontal shaft 6 are connected, and the coarse movement of the lens barrel 1 is stopped. In this state, when the dial 15 is rotated, the worm gear 13 rotates, so that the circular The gear 12 rotates at a warm speed, and the horizontal shaft 6 integrally rotates at a warm speed.Therefore, the lens barrel 1 can be slightly moved in the vertical direction.

Since this fine movement is performed by the rotation of the circular gear 12 of the gear mechanism 10, the horizontal shaft 6 can rotate over a wide range. Therefore, fine movements in the vertical direction can be performed continuously and over a wide range, and even if the object to be observed moves continuously, observation can be performed that follows the movement. Moreover, since the switching operation between coarse movement and fine movement and the fine movement operation can be performed on the eyepiece side, the operability of these operations is improved.

[Effects of the Invention] As explained above, the present invention performs fine vertical movement of the lens barrel using a gear mechanism, so it can be performed continuously and over a wide range. Switching operations can be performed easily.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing an embodiment of the lens barrel fine adjustment device of the present invention, Fig. 2 is a sectional view of its main parts, and Fig. 3 is Fig. 2.
-m line sectional view and FIG. 4 is a side view showing the conventional device. 1... Lens barrel 2... Pedestal 3... Tripod 4... Tripod head (supporting member) 6... Horizontal shaft 10... Gear mechanism 20... Operating mechanism Fig. 2

Claims (1)

[Claims] (1) a horizontal shaft rotatably attached to a support member;
A pedestal that supports the lens barrel of the telescope and rotates integrally with the horizontal axis to adjust the angle of the lens barrel in the vertical direction; A gear mechanism that finely rotates the horizontal shaft when connected to the gear mechanism, and an operating mechanism that connects and releases the gear mechanism and the horizontal shaft, and when released, sets the horizontal shaft in a free state capable of coarse rotation. A telescope lens barrel fine movement device that is characterized by: