KR200309447Y1 - Lens focus setting structure for watertight camera - Google Patents

Abstract

The present invention relates to a lens focusing structure for a camera included in a waterproof camera and a control system, which is individually fixed to two color adjustments coupled to axially move with the two ends of a zoom lens inside the camera. The main components include two inner magnets connected to each other and two outer magnets corresponding to the two inner magnets individually and movably attached to the outer wall surface of the camera to magnetically attract them. When the outer magnet is moved, the inner magnet is moved at the same time, thus moving the color adjuster connected to it, causing the lens mount to move forward and backward with respect to the zoom lens, so that the camera is not required to open its sheath. You can set the focus externally.

Description

Lens focus setting structure for watertight cameras

The present invention relates to a lens focusing structure for a waterproof camera, and in particular, a lens focusing included in a control system for enabling the lens focusing without the need to open the camera's envelope to keep the camera waterproof during its operation. It is about structures.

Commercially available camera lenses are generally classified into two types: fixed lenses and zoom lenses. 1 and 2 are exploded and assembled perspective views of a conventional zoom lens 10, respectively. As shown, the zoom lens 10 has two lens mounts, namely an outer lens mount 11 as a focus lens and an inner lens mount 12 as a bifocal lens, the outer and inner ends of which are combined. . When the two lens mounts 11 and 12 are adjusted in their forward and backward positions with respect to the zoom lens 10, the control camera can be set to different control ranges and viewing angles.

The two lens mounting portions 11 and 12 have projections 111 and 121, respectively, spaced at three equal intervals along the outer circumferential surface. These protrusions 111 and 121 may be fixed in place on the lens mounting portions 11 and 12 by screwing, for example. The zoom lens 10 has two sets of three equally spaced curved guide slots 13, 14 corresponding to the protrusions 111, 121 at positions corresponding to the outer and inner lens mounts 11, 12, respectively. Thus, the protrusions 111, 121 can move individually within the curved guide slots 13, 14. When the protrusions 111 and 121 are moved along the corresponding curved guide slots 13 and 14, the position of the lens mounting portions 11 and 12 relative to the zoom lens 10 is adjusted forward or backward. In addition, the zoom lens 10 has first and second color adjusting portions 15 and 16 whose two ends are separately mounted on the lens mounting portions 11 and 12. Two collar adjusting portions 15, 16 are provided on each inner wall surface having three axially extending and corresponding circumferentially spaced linear grooves 151, 161 corresponding to the protrusions 111, 121. When the color adjusting portions 15 and 16 are turned, the grooves 151 and 161 cause the lens mounting portions 11 and 12 to rotate together with the color adjusting portions 15 and 16. When the lens mounts 11 and 12 rotate, the protrusion 121 moves therein along the corresponding curved slots 13 and 14, thereby moving the lens mounts 11 and 12 forward or backward. . In order to enable convenient setting of the lens focus via the color adjuster 15, two focus levers 152, 162 are provided on the outer surface of the color adjuster 15, 16 in order to be able to easily turn them. do.

In order to perform the lens focus setting in the above-described structure, in order to expose the focus levers 152 and 162 for manipulation, it is necessary to open the shell of the camera (not shown). However, waterproof cameras designed primarily for underwater use are not able to open the camera's skin underwater to perform lens focusing. Because of this, all currently available waterproof cameras have lenses that cannot change the focal length.

It is a primary object of the present invention to provide a lens focusing structure for a waterproof camera for enabling focusing on an inner lens from the outside of the waterproof camera so that it can be conveniently used to take images at different focal ranges and field of view.

In the lens focusing structure of the present invention, the user can easily control the lens focus of the waterproof camera without having to negatively affect its waterproofness and without having to open the envelope.

In order to achieve the above and other objects, the lens focusing structure of the present invention is individually fixed to the inner magnets which are fixedly connected to the two color adjusting parts in the camera, and to the outer wall surface of the camera corresponding to the two inner magnets. An external magnet movably provided as a main component is included. When the outer magnets are moved, the outer magnet and hence the color adjuster are moved synchronously due to the magnetic force between the inner and outer magnets. Therefore, focus setting of the camera can be achieved through the movement of the external magnet.

1 is an exploded perspective view of a conventional zoom lens.

2 is a perspective view of FIG. 1 in an assembled state;

3 is a perspective view of a camera having a lens focusing structure according to the present invention;

4 is a partial cross-sectional side view of FIG. 3.

* Description of the symbols for the main parts of the drawings *

10: zoom lens 11, 12: lens mounting portion

15, 16: color adjustment unit 20: camera

30: first outer magnet 31: first inner magnet

40: second outer magnet 41: second inner magnet

3 and 4, a perspective view and a partial cross-sectional side view of a camera 20 having a lens focusing structure according to the present invention are shown, respectively. The camera 20 may be a waterproof camera for underwater use, or a camera included in a control system. As shown, the camera 20 has a zoom lens 10 internally, and the lens mounts 11 and 12 that are movable forward and backward are connected to inner and outer ends thereof. The outer lens mount 11 is a focus lens, and the inner lens mount 11 is a bifocal lens. First and second color adjustments 15, 16 are mounted on the outer and inner lens mounts 11, 12, respectively, to move the two lens mounts 11, 12 forward or backward. The above-described structure for the zoom lens 10 is a prior art as shown in FIG.

In the present invention, the first internal magnet 31 is fixedly connected to the first collar adjustment part 15, and the first external magnet 30 is positioned at the position corresponding to the first internal magnet 31. The first inner and outer magnets 31 and 30 are magnetically attracted to each other. Similarly, the second inner magnet 41 is fixedly connected to the second collar adjusting portion 16 and the second outer magnet 40 is positioned at the position corresponding to the second inner magnet 41 of the camera 20. It is movably attached to the outer wall surface, so that the second inner and outer magnets are magnetically attracted to each other. When the first outer magnet 30 moves, the first collar adjustment part 15 rotates simultaneously due to the magnetic attraction between the first outer and first inner magnets 30, 31. In turn, rotation of the first color adjusting unit 15 causes the outer lens mounting unit 11 on the zoom lens 10 to move forward or backward with respect to the zoom lens 10. Similarly, when the second outer magnet 40 is moved, the second collar adjuster 16 rotates simultaneously due to the magnetic attraction between the second outer and inner magnets 40, 41. Rotation of the second color adjuster 16 sequentially causes the inner lens mount 12 on the zoom lens 10 to move forward or backward relative to the zoom lens 10. By adjusting the positions of the outer and inner lens mounts 11 and 12, lens focusing for the camera 20 can be achieved.

The camera 20 has a skin made of a non-magnetic material such as aluminum. The camera also has internal parts, most of which are made of plastic material. Thus, the magnetic force of the outer magnets 30, 40 only acts on the corresponding inner magnets 31, 41. On the other hand, in order to minimize mutual interference therebetween, the first outer and inner magnets 30 and 31 and the second outer and inner magnets 40 and 41 have a 180 degree phase difference therebetween. Is provided in the shell of the shell.

The camera has an outer wall surface having two guide grooves 21, 22 for each of the two outer magnets 30, 40 to move therein. The outer magnets 30, 40 moving in the guide grooves 21, 22 are magnetically attracted by the inner magnets 31, 41 without the risk of being separated from the guide grooves 21, 22. Alternatively, the guide grooves 21, 22 are counterbore top inner edges (not shown) to ensure that the outer magnets 30, 40 are firmly installed in the counterbore guide grooves 21, 22 without the risk of detaching therefrom. H).

In the above-described embodiment of the present invention, the positions of the outer and inner lens mounting portions 11 and 12 with respect to the outer and inner ends of the zoom lens 10 are respectively determined by the first and second color adjusting portions 15 and 16, respectively. Controlled through rotation. Accordingly, the outer magnets 30 and 40 of the camera 20 are moved along the guide grooves 21 and 22 to the left or the right to rotate the color adjusting portions 15 and 16. In another embodiment, the collar adjustments 15, 16 inside the camera 20 are moved forward or backward in the axial direction (not shown). In this case, the outer magnets 30 and 40 are designed to move forward or backward on the outer wall surface of the camera.

In summary, the present invention employs a simple structure using magnetic force to focus the zoom lens inside the camera without having to open the camera envelope. Thus, in the present invention, the lens focus setting for the waterproof camera underwater can be achieved.

Claims (2)

A zoom lens is provided internally, and outer and inner ends of the zoom lens are an inner lens mount portion which is a bifocal lens and an outer lens mount portion which is a focus lens, and the outer and inner lens mount portions are respectively mounted around the first lens mount. And controlled to be moved forward or backward with respect to the zoom lens via a second color adjustment unit. A first inner magnet fixedly connected to the first collar adjustment unit; A first external magnet movably attached to an outer wall surface of the camera corresponding to the first external magnet and magnetically attracting to the first internal magnet; A second internal magnet fixedly connected to the second collar adjustment unit; And a second outer magnet movably attached to an outer wall surface of the camera corresponding to the second inner magnet and magnetically attracting each other to the second inner magnet. The lens focusing structure for a waterproof camera according to claim 1, wherein the camera has two guide grooves on the outer wall surface for allowing the first and second external magnets to move separately therein.