KR100595687B1 - Camera apparatus of mobile communication terminal which can optically zoom subjects - Google Patents

Abstract

A camera device of a portable terminal according to the present invention comprises: a first lens passage fixed to a camera body, having a first lens therein, and having a screw thread formed at one selected from an outer circumferential surface or an inner circumferential surface; A first screw thread coupled to the front of the first lens barrel toward the first lens barrel is screwed to a screw thread formed in the first lens barrel, and one selected from an inner circumferential surface or an outer circumferential surface of the other end is formed. A second lens passage having a second screw thread formed therein so as to travel in a direction opposite to a traveling direction of the thread formed in the first lens barrel, and having a second lens therein; A third lens barrel coupled to the front of the second lens barrel, the screw thread being formed to be screwed to the second screw thread formed in the second lens barrel at the end facing the second lens barrel, and having a third lens therein; ; A fixed guide fixed to the case frame of the terminal and preventing a rotation of the third lens barrel, and having a guide part for guiding the third lens barrel in the rotation axis direction of the second lens barrel; Rotation means coupled to the second lens barrel to close or separate the second lens barrel and the third lens barrel with respect to the first lens barrel by rotating the second lens barrel; By including a hand holding the portable terminal by turning the wheel protruding to the outside of the portable terminal it is possible to easily adjust the distance of each lens, it is possible to freely adjust the focus on the subject at various distances.

Handset, camera, zoom

Description

CAMERA APPARATUS OF MOBILE COMMUNICATION TERMINAL WHICH CAN OPTICALLY ZOOM SUBJECTS}

1 is a perspective view of a portable terminal equipped with a conventional camera device;

2 and 3 illustrate an example in which a camera device according to the present invention is mounted on a folding portable terminal.

2 is a perspective view of a portable terminal,

3 is a side view of a portable terminal,

4 is an exploded perspective view of a camera device according to the present invention;

5 is a cross-sectional view illustrating a case in which each lens approaches each other according to a zoom function;

6 is a cross-sectional view illustrating a case in which each lens is separated from each other according to a zoom function.

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

30: camera unit 40: wheel

43: guide rail 44: uneven surface

50: first lens barrel 51: first lens

52: outer thread 60: second lens barrel

61: second lens 62: first screw thread

63: second thread 64: guide projection

70: third lens barrel 71: third lens

72: inner thread 73: guide projection

80: fixing guide 91: protective lens

The present invention relates to a camera device mounted on a portable terminal, and more particularly, to adjust the focus by adjusting the distance between the lenses so that the subject at various distances, such as the zoom lens of a general camera to the exact focus of the optical zoom function It relates to a camera device of a portable terminal that can be implemented.

In recent years, portable terminals have developed into a comprehensive multimedia device that includes digital camera or camcorder functions to provide a function of playing a music file (MP3 player), recording a still image or a moving picture, or transmitting / receiving, in addition to a basic function as a telephone. .

An example of a portable terminal having a camera device among such portable terminals will be described with reference to FIG. 1.

As shown in the drawing, the portable terminal 10 rotates a terminal body 11 having a plurality of input keys 14 on its front face and a folder 12 on which a display window 13 is installed on the terminal body 11. It is coupled by a hinge 15 so as to be openable.

One side of the hinge 15 is provided with a camera device 20 including an angle adjusting knob 22 to manually adjust the angle of the camera lens 21 with respect to the portable terminal 10.

However, since the conventional camera device 22 is limited in size and design with respect to the portable terminal 10, a zoom function capable of optically enlarging a subject to be photographed is provided. It was difficult to design.

On the contrary, a camera device of a portable terminal having a macro function capable of taking close-up photography has been proposed. However, since only two levels of zoom control are possible, the user can focus on a subject at various distances or focus on it. There is a limit to the focusing adjustment to be different.

On the other hand, some of the methods of enlarging a subject of an existing camera apparatus show a method of electronically enlarging digital data processed from an image sensor, not by an optical method, but the enlarged image has a disadvantage in that the resolution is reduced.

The present invention has been made in view of the above, an object of the present invention is to easily adjust the distance between the lens so that the user can freely adjust the focus with respect to the subject at various distances with only one hand holding the portable terminal An object of the present invention is to provide a camera device of a portable terminal capable of implementing an optical zoom function.

In order to achieve the above object, the present invention, the camera body is fixed to the case frame of the portable terminal; A first lens passage fixed to the camera body and having a first lens therein, wherein at least one of an outer circumferential surface or an inner circumferential surface is formed with a thread; A first screw thread is formed at an inner circumferential surface or an outer circumferential surface of the first lens barrel to be coupled to the front of the first lens barrel and to be screwed to a screw thread formed in the first lens barrel. A second lens passage formed at one of the inner circumferential surface or the outer circumferential surface to form a second screw thread so as to travel in a direction opposite to a traveling direction of the thread formed in the first lens barrel, and having a second lens therein; A screw thread is formed on an inner circumferential surface or an outer circumferential surface of the second lens barrel and coupled to a front side of the second lens barrel to be screwed to a second screw thread formed in the second lens barrel. Passing through the third lens; A fixed guide fixed to the case frame of the portable terminal and having a guide unit for preventing rotation of the third lens barrel and guiding the third lens barrel in a rotation axis direction of the second lens barrel; Rotation means coupled to the second lens barrel to close or separate the second lens barrel and the third lens barrel from the first lens barrel by rotating the second lens barrel; It provides a camera device of a portable terminal capable of implementing an optical zoom function configured to include.

According to the present invention, the guide portion, a guide rail is formed parallel to the axis of rotation of the second lens barrel in one selected from the outer peripheral surface of the third lens barrel and the fixed guide, the other is restrained by the guide rail It is preferable that guide protrusions are formed.

In addition, the rotation means, the inner ring is rotatably fixed to the case frame or the camera body of the portable terminal, the outer ring provided to rotate integrally with the inner ring is provided so as to protrude to the outside of the terminal case. A wheel; An arm fixed to the wheel and provided to rotate the second lens barrel; A guide unit for allowing the arm to transfer the second lens barrel in a direction of a rotation axis of the second lens barrel; It is preferably configured to include.

The guide part may include a guide rail formed at one of an outer circumferential surface of the second lens barrel and the arm, the guide rail being parallel to the rotation direction of the second lens barrel, and the other having a guide protrusion constrained by the guide rail. It is preferable.

On the other hand, it is preferable that the uneven surface is formed on the outer peripheral surface of the wheel.

Hereinafter, a camera apparatus of a portable terminal capable of implementing an optical zoom function according to the present invention will be described according to an embodiment shown in the accompanying drawings.

2 and 3 show an example in which the camera device according to the present invention is mounted on a foldable portable terminal. FIG. 2 is a perspective view of the portable terminal, and FIG. 3 is a side view.

As shown, the camera device 30 according to the present invention is provided with a portion of the handle wheel 40 protrudes on the side of the terminal body 21 in which a plurality of input keys 24 are installed. The wheel 40 can be turned by the user with a finger for the optical zoom function as will be described later.

That is, by turning the wheel 40 using the thumb of the user's finger holding the portable terminal 20, the image received by the camera device 30 is viewed while the display window 23 is installed in the folder 22. Can be adjusted freely. Therefore, the user does not need to use both hands to implement the optical zoom function.

As shown in FIG. 4, the camera device 30 according to the present invention includes a camera body 55, a first lens barrel 50 and a second lens barrel sequentially coupled to the front of the camera body 55. 60, a third lens barrel 70, a fixing guide 80, and a wheel 40 for rotating the second lens barrel 60.

The camera body 55 includes an image sensor that receives light incident through each lens barrel 50, 60, 70, and a PCB for processing the data detected by the image sensor to form an image and output the image. (Not shown).

The camera body 55 is fixed to the case frame (not shown) of the terminal and at the same time to fix the first lens barrel 50 to the front, as described later by rotating the second lens barrel 60 It also serves as a fixed end even when relatively close or separated from the first lens barrel 50 engaged.

On the outer circumferential surface of the camera body 55 side of the first lens barrel 50, the wheel shaft 54 and the wheel 40 are provided so that the inner ring 41 of the wheel 40 can turn. An anti-separation jaw 54 is provided so as not to be separated, and a first lens 51 is provided therein.

In addition, an outer thread 52 is formed on an outer circumferential surface of the front of the first lens barrel 50 so that the outer lens 52 can be screwed with the second lens barrel 60.

In front of the first lens barrel 50, a second lens 61 is provided inside, and a first screw thread 62 is formed on the inner circumferential surface of the end portion facing the first lens barrel 50, A second screw thread 63 is formed on the outer circumferential surface, and a second lens barrel 60 is formed on the outer circumferential surface with guide protrusions 64 protruding in a radial direction.

The first screw thread 62 is formed to engage the outer thread 52 of the first lens barrel 50. Accordingly, as the second lens barrel 60 is rotated in the state in which the second lens barrel 60 is screwed to the first lens barrel 50, the second lens barrel 60 is connected to the first lens barrel 60. Proximity or separation with respect to the lens barrel (50).

In addition, the second screw thread 63 is formed in a direction different from that of the first screw thread 62. For example, when the first screw thread 62 is a right screw type, the second screw thread 63 is a left screw thread. On the contrary, if the first screw thread 62 is a left screw type, the second screw thread 63 is a right screw type and is formed to progress in opposite directions to each other.

The wheel 40, as described above, the inner ring 41 is formed to rotate along the wheel shaft 54 fixed to the camera body 55 side, while the arm 42 is formed toward the front side do.

In addition, the outer ring 45 of the wheel 40 is preferably formed to have a size that allows the user to directly turn by protruding out of the case of the portable terminal 20. On the other hand, the gear 40 or the locking means may be coupled to the wheel 40 so that the gear or the locking means protrude to obtain the same effect.

In addition, it is preferable to form the uneven surface 44 on the outer circumferential surface of the wheel 40 so that it is easily turned with a finger.

In addition, the arm 42 has a guide rail 43 disposed inside thereof, and primarily serves to rotate the second lens barrel 60 by pushing the guide protrusion 64. The guide protrusion 64, which moves integrally with the second lens barrel 60 when the barrel 60 rotates with respect to the first lens barrel 50 and moves relatively close to or away from the first lens barrel 50, provides the guide rail 64. It is constrained to and serves to be relatively conveyed with respect to the wheel 40.

On the other hand, contrary to the present example, a guide rail may be provided on the outer circumferential surface of the second lens barrel 60, and guide protrusions may be formed on the arm 42 to obtain the same effect.

In addition, the rotation means capable of rotating the second lens barrel 60 is introduced from the outside of the case frame 90 of the portable terminal in addition to the wheel 40 of the present embodiment, so that the second lens barrel 60 is rotated. It is also possible to implement the same function by having a lever that can turn).

In front of the second lens barrel 60, a third lens 71 is provided inside, the inner thread 72 on the inner circumferential surface to be screwed to the second screw thread 63 of the second lens barrel 60 At the same time, a third lens barrel 70 having a guide protrusion 73 radially protruding from the outer circumferential surface thereof is screwed to the second lens barrel 60.

In addition, in front of the third lens barrel 70, a fixing guide 80 surrounding the third lens barrel 70 and guiding forward and backward movement of the third lens barrel 70 is a case frame of the portable terminal. It is fixed to 90.

The fixing guide 80 guides the guide protrusion 73 in the front-rear direction at a position corresponding to the guide protrusion 73 of the third lens barrel 70 in parallel with the rotation axis of the second lens barrel 60. The guide rail 70 is provided.

Accordingly, the third lens barrel 70 cannot rotate with respect to the fixing guide 80. When the second lens barrel 60 is rotated, the third lens barrel 70 rotates accordingly. Instead, the screw coupling between the second screw thread 63 and the inner screw thread 72 is loosened or wound.

Accordingly, the third lens barrel 70 is relatively approached or separated with respect to the second lens barrel 60 in accordance with the rotation of the second lens barrel 60.

On the other hand, contrary to the present example, a guide rail may be installed on the outer circumferential surface of the third lens barrel 70, and guide protrusions may be formed on the fixing guide 80 to obtain the same effect.

In sum, the second lens barrel 60 connected to the guide protrusion 64 is turned by turning the wheel 40 so that the second lens barrel 60 is pulled with respect to the first lens barrel 50. On the contrary, the third lens barrel 70 is wound or unwound with respect to the second lens barrel 60.

That is, when the wheel 40 is rotated in any direction, the distance between the second lens 61 and the first lens 51 and the distance between the third lens 71 and the second lens 61 are both close. It is either lost or transported away.

This action is realized by opposing the screwing between the outer thread 52 and the first screw thread 62 and the screwing between the second screw thread 63 and the inner screw thread 72 to each other.

Therefore, if the first screw thread is formed on the outer circumferential surface of the second lens barrel 60 to the extent that the mutual screw coupling is reversed, it is possible to form a screw thread on the inner circumferential surface of the first lens barrel 50. An example is also possible in which the second screw thread is placed on the inner circumferential surface of the second lens barrel 60 and the outer thread thread is disposed in the third lens barrel.

5 is a cross-sectional view illustrating a case where each lens approaches each other according to a zoom function, and FIG. 6 is a cross-sectional view illustrating a case where each lens is separated from each other according to a zoom function.

As shown in FIG. 5, when the wheel 40 is rotated to wind the second lens barrel 60 with respect to the first lens barrel 50, the guide protrusion 64 is also restrained by the guide rail 43. The second lens barrel 60 approaches the first lens barrel 50. The third lens barrel 70 is also wound by the second lens barrel 60, and the guide protrusion 73 is restrained by the guide rail 81 and approaches toward the camera body 55.

Therefore, the third lens barrel 70 is relatively twice closer to the first lens barrel 50 than the second lens barrel 60.

On the contrary, as shown in FIG. 6, when the wheel 40 is rotated to loosen the second lens barrel 60 with respect to the first lens barrel 50, the third lens barrel 70 also has the second lens barrel ( 60).

Therefore, the third lens barrel 70 is relatively twice as far as the second lens barrel 60 with respect to the first lens barrel 50.

At this time, the pitch of the first thread 62 or the outer thread 52 and the second thread 63 or the inner thread 72 is the focal length of each lens 51, 61, 71. Can be designed differently according to.

In the drawings, reference numerals denote protection lenses 91 provided in the case frame 90.

According to the camera device of the portable terminal capable of implementing the optical zoom function of the present invention as described above, even by one hand holding the portable terminal by turning the wheel protruding to the outside of the portable terminal to easily adjust the distance of each lens This makes it possible to freely adjust the focus on subjects at various distances.

As described above with reference to the drawings illustrating a camera device of a portable terminal capable of implementing an optical zoom function according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, of the present invention Various modifications may be made by those skilled in the art within the scope of the technical idea.

Claims (5)

A camera body fixed to the case frame of the portable terminal; A first lens passage fixed to the camera body and having a first lens therein, wherein at least one of an outer circumferential surface or an inner circumferential surface is formed with a thread; A first screw thread is formed at an inner circumferential surface or an outer circumferential surface of the first lens barrel to be coupled to the front of the first lens barrel and to be screwed to a screw thread formed in the first lens barrel. A second lens passage formed at one of the inner circumferential surface or the outer circumferential surface to form a second screw thread so as to travel in a direction opposite to a traveling direction of the thread formed in the first lens barrel, and having a second lens therein; A screw thread is formed on an inner circumferential surface or an outer circumferential surface of the second lens barrel and coupled to a front side of the second lens barrel to be screwed to a second screw thread formed in the second lens barrel. Passing through the third lens; A fixed guide fixed to the case frame of the portable terminal and having a guide unit for preventing rotation of the third lens barrel and guiding the third lens barrel in a rotation axis direction of the second lens barrel; Rotation means coupled to the second lens barrel to close or separate the second lens barrel and the third lens barrel from the first lens barrel by rotating the second lens barrel; Camera device of a portable terminal capable of implementing an optical zoom function configured to include. The method of claim 1, wherein the guide portion, One of the outer circumferential surface of the third lens barrel and the fixed guide is formed with a guide rail in parallel to the axis of rotation of the second lens barrel, the other is characterized in that the guide projection is constrained to the guide rail A camera device of a portable terminal capable of implementing a zoom function. The method of claim 1, wherein the rotating means, An inner ring rotatably fixed to the case frame or the camera body of the portable terminal, and an outer ring provided to rotate integrally with the inner ring so as to protrude outward of the terminal case; An arm fixed to the wheel and provided to rotate the second lens barrel; A guide unit for allowing the arm to transfer the second lens barrel in a direction of a rotation axis of the second lens barrel; Camera device of a portable terminal capable of implementing an optical zoom function, characterized in that configured to include. The method of claim 3, wherein the guide portion, One of the outer circumferential surface of the second lens barrel and the arm is selected, the guide rail is formed in parallel to the rotation direction of the second lens barrel, the other is characterized in that the guide projection is constrained to the guide rail Camera device of a portable terminal capable of implementing an optical zoom function. The method according to claim 3 or 4, Camera device of a portable terminal capable of implementing an optical zoom function, characterized in that the concave-convex surface is formed on the outer peripheral surface of the wheel.

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