KR100831429B1 - Portable communications apparatus having a protection structure of zoom lens assembly, and closing control method of zoom lens assembly - Google Patents

Abstract

Portable zoom device and zoom lens assembly having a protective structure of a zoom lens assembly for protecting the camera when the camera employing the optical zoom, that is, a zoom lens assembly that realizes zooming by a mechanical structure, is mounted in a folding portable communication device. Disclosed is a close control method of. The close control method of the zoom lens assembly may include receiving a folder close switch signal; Determining whether the received signal is a close signal after receiving the folder close switch signal; And controlling the zoom driving motor to operate the optical zoom lens assembly in a closed state when the input signal is a close signal after determining whether the close signal is applied.

Accordingly, the present invention can prevent damage to the optical zoom lens assembly, thereby increasing the reliability of the portable communication device.

Optical zoom, lens, camera, mobile phone, telephone, communication equipment, PDA, zoom lens

Description

Portable communications apparatus having a protection structure of zoom lens assembly, and closing control method of zoom lens assembly

1 is a view showing a portable communication device having a protective structure of a zoom lens assembly according to the present invention.

2 to 18 are views illustrating an optical zoom lens assembly that can be applied to the present invention.

19 is a perspective view showing a portable communication device for explaining an embodiment according to the present invention.

20 is a block diagram showing a main configuration of a portable communication device for explaining the first embodiment according to the present invention.

21 is a flowchart illustrating a first embodiment of a close control method of a zoom lens assembly according to the present invention.

22 is a flowchart illustrating a second embodiment of a close control method of a zoom lens assembly according to the present invention.

FIG. 23 is a block diagram illustrating a third embodiment of a close control method of a zoom lens assembly according to the present invention. FIG.

24 is a flowchart illustrating a third embodiment of a close control method of a zoom lens assembly according to the present invention.

The present invention relates to a portable communication device having a protective structure of a zoom lens assembly and a close control method of a zoom lens assembly, and more particularly, to a camera to which a zoom lens assembly in which zooming is realized by optical zoom, a mechanical structure, is provided. A close control method of a portable communication device and a zoom lens assembly having a protective structure of a zoom lens assembly for protecting a camera when mounted in a folding portable communication device.

In general, a short focal lens is adopted for a micro lens unit mounted on a portable communication device or the like. In other words, a short focal lens composed of a simple structure is used to satisfy the ultra small size. Since such a small lens device is a short focal point, there is no mechanical zoom function, and thus it is implemented by electronic zoom processed by software. However, when the zoom is mechanically realized, when such an optical zoom assembly is installed in a portable communication device, especially a folding type communication device, the optical zoom lens assembly is portable when the folder is closed or folded with the zoom function activated. There is a problem that can be damaged by interference.

Accordingly, the present invention has been proposed to solve the above problems, and an object of the present invention is to interfere with closing or folding a folder of a portable communication device when an optical zoom lens is mounted in the portable communication device, that is, a folding communication device. To provide a close control method of a portable communication device and a zoom lens assembly having a protective structure of the zoom lens assembly to prevent damage to the optical zoom lens assembly due to.

According to an aspect of the present invention, there is provided a folder type portable communication device equipped with an optical zoom lens assembly, the method comprising: receiving a folder close switch signal; Determining whether the received signal is a close signal after receiving the folder close switch signal; When the input signal is a close signal after the step of determining whether the close signal is applied, and provides a close control method of the zoom lens assembly comprising the step of controlling the zoom driving motor to operate the optical zoom lens assembly in a closed state.

In addition, the present invention provides a foldable portable communication device equipped with an optical zoom lens assembly, comprising: receiving a folder close detection sensor signal; Determining whether a closed signal is input to the input signal after receiving the signal of the detection sensor; When the input signal is a close signal after the determining step, it provides a close control method of a zoom lens assembly comprising the step of controlling the zoom driving motor to operate the optical zoom lens assembly in a closed state.                         

The present invention also provides a first body having a keypad; A second body having a display unit; A hinge part configured to couple the first body and the second body to be rotatable with each other; An optical zoom lens assembly coupled to at least one of the first body, the second body and the hinge portion; Provided is a portable communication device having a protective structure of a zoom lens assembly including an accommodation part provided in the first body or the second body such that the optical zoom lens assembly is accommodated in a zoom state.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing an example in which an optical zoom lens assembly is applied to explain an embodiment according to the present invention, an optical zoom lens assembly (3) coupled to a portable communication device made of a conventional cellular phone (1), etc. A zoom lens assembly in which zooming is realized by a mechanical structure is also referred to as " zoom lens assembly "

The zoom lens assembly 3 is made of a very small and has a structure capable of realizing a zoom function, and is configured to be accommodated in a portable electronic device such as the cellular phone 1 or a portable communication device. The cellular phone 1 describes an example of a portable communication device, and an electronic device to which the zoom lens assembly 3 of the present invention can be applied is an image on a communication device such as a cellular phone, a notebook computer, a PDA, etc. Means all devices that can be applied as input device.

In the embodiment of the present invention, in particular, a cellular phone that is applied to a clamshell (a form consisting of a folding divided into two bodies) will be described as an example.

The cellular phone 1 includes a first body 501 and a second body 503, and the first and second bodies 501 and 503 are coupled by a hinge part 505 to be rotatable with each other. do. The first body 501 or the second body 503 may be provided with a key pad on one body, and may have a display unit on the other body. In addition, the first and second bodies 501 and 503 are rotatably coupled to each other by the hinge portion 505 to be collected or unfolded.

The optical zoom lens assembly 3 is coupled to the hinge portion 505. Although the optical zoom lens assembly 3 has been described as an example coupled to the hinge portion 505, the present invention is not limited thereto. The first body 501, the second body 503, and the hinge portion 505 are described. It may be coupled to at least one of the.

The first body 501 is provided with an accommodating portion formed of a groove 501a so that the optical zoom lens assembly 3 is accommodated in a zoomed state to prevent breakage. The accommodating portion may be provided at a position corresponding to the optical zoom lens assembly so that the accommodating portion may be accommodated even when disposed at another position of the optical zoom lens assembly. That is, an accommodation part may be provided in the first body 501 or the second body 503.

In particular, it is preferable that the groove 501a constituting the receiving portion is made of a groove larger than the maximum feeding distance of the optical zoom lens assembly 3. This provides a structure in which the optical zoom lens assembly 3 can be safely stored without being damaged even if it is stored in the groove 501a in the extracted state.                     

This embodiment is applicable even if the cellular phone 1 is folded or not electrically powered.

Hereinafter, a configuration of the optical zoom assembly 3 applicable to an example of the present invention will be described in detail with reference to FIGS. 2 to 18. Such a zoom lens assembly is not limited to the embodiment of the present invention, and may be applied to only one embodiment, and an optical zoom lens assembly structure having another structure may also be applied to the present invention.

Figure 2 is a perspective view showing the overall appearance of the optical zoom lens assembly 3 that can be applied to the present invention, Figures 3 and 4 are views for explaining the zoom drive motor of the zoom lens assembly, Figures 5 and 6 are zoom A diagram illustrating an arrangement relationship of a power transmission gear that transmits a driving force of a driving motor. The semiconductor device assembly (7, CMOS module assembly; Complementary Metal Oxide Semiconductor), which is coupled to the zoom base (5), is an imaging device. Motor 9 (shown in FIGS. 3 and 4), a plurality of power transmission gears (shown in FIGS. 11, 5 and 6), and first and second lens assemblies 13, 15, 2 and 10. Shown). The semiconductor element assembly 7 and the zoom drive motor have an electrical connection such that control can be made by a control unit (not shown). The control unit (not shown) is preferably disposed in a portable communication device or an electronic device on which the zoom lens assembly is mounted.

The zoom base 5 includes the semiconductor device assembly 7, the zoom driving motor 9, the power transmission gear 11, and the first and second lens assemblies 13 and 15 to form a zoom lens assembly. It serves as a base to do it.                     

The semiconductor device assembly 7 is coupled to the zoom base 5 to control a zoom driving motor through a zoom switch (not shown), and the like, and is electrically connected to the zoom driving motor 9 and the zoom switch (not shown). Is connected.

The semiconductor device assembly 7 is coupled to the back of the zoom base 5, that is, the opposite side facing the subject.

The zoom drive motor 9 comprises a cylindrical step motor magnet 19 with a rotating shaft 17 as a rotor. The step motor magnet 19 is rotatably coupled to the front side (surface facing the subject) of the zoom base 5 at one corner side (shown in FIG. 3). The rotation shaft 17 is fixedly coupled to the step motor gear 21 (shown in FIG. 4), which can also be rotated by the rotation of the step motor magnet 19. The first and second step motor coils 23 and 25 and the first and second step motor yokes 27 and 29 are disposed on the outer circumference of the step motor magnet 19 as stators. The step motor coils 23 and 25 and the step motor yoke 27 and 29 may be coupled to the zoom base 5 to be perpendicular to each other. The step motor coils 23 and 25 may be wound directly on the step motor yokes 27 and 29 to reduce the spatial constraints of conventional bobbins. In addition, through the structure in which the step motor coils 23 and 25 and the step motor yokes 27 and 29 are arranged at 90 ° from the reference opposing structure, space constraints can be minimized and design freedom can be increased. Has the advantage. The step motor yokes 27 and 29 are disposed at magnetic field corresponding positions (relative to the N pole and the S pole) on the circumferential surface of the step motor magnet 19, and are located at the peak of 90 ° intervals in the 360 ° section when the power is turned off. Located. That is, the zoom drive motor rotates by 90 degrees by two control pulses as shown in FIG. The zoom driving motor 9 having such a structure can efficiently use the space disposed on the zoom base, and thus has a very advantageous structure for manufacturing the zoom lens assembly in a compact size.

The cover 31 is coupled to the zoom base 5 so as to cover the above-described zoom drive motor 9. At this time, the step motor gear 21 is coupled to be disposed on the subject side surface of the cover 31 (shown in FIG. 5).

The power transmission gear 11 is sequentially engaged with the step motor gear 21 to decelerate and to receive first, second, third, fourth, and fifth gears 33, 35, 37, 39, 41). The power transmission gear 11 is provided with holes through which the center of rotation of the gears can be fitted by the cover 31 to fix the position thereof.

FIG. 8 is a perspective view showing the upper surface (subject side) of the cover 31, and FIG. 9 is a perspective view showing the lower surface (subject side) of the cover 31, and a protrusion protruding from the zoom base 5; (5a, 5b, shown in Fig. 3) is provided with holes 31a, 31b, which can be fitted, and shafts 31c for coupling the power transmission gears 11 are upper surfaces (subject side). The state which protrudes is shown. Accordingly, the cover 31 is fixed to the zoom base 5 by fitting holes 31a and 31b to protrusions 5a and 5b provided in the zoom base 5. Moreover, as shown in FIG. 9, the said cover 31 is equipped with the other hole 31d into which the rotating shaft 17 of the zoom drive motor 9 is inserted. Therefore, the step motor gear 21 coupled to the rotary shaft 17 of the zoom drive motor 9 is disposed on the subject side of the cover 31.                     

On the other hand, the power transmission gear 11 is not limited to the above-mentioned number, the number can be appropriately adjusted as necessary in the design.

As shown in FIG. 10, the first lens assembly 13 includes a first lens cam 43, a first lens barrel 45, a first lens holder 47, and a first lens 48. It includes.

As shown in FIG. 5, the first lens cam 43 has a cylindrical shape and includes a plurality of gear teeth 43e on the outer circumferential surface thereof so as to be engaged with the gear 41 (FIG. 5). And shown in FIG. 6). And it is coupled to the zoom base (5) rotatably by a driving force to the gear (41). The first lens cam 43 is provided with a spiral cam groove 43a on an inner circumferential surface thereof.

The first lens cam 43 may be positioned by a plurality of lens cam covers 51, 53, and 55 coupled to the zoom base 5 (shown in FIG. 10).

In addition, the first lens cam 43 has one side of an outer circumferential surface thereof, and a hole 43d is formed in the optical axis direction, so that the first lens cam 43 is a power transmission member for transmitting rotational force to the second lens cam 71 (which will be described later). The other lens cam shaft 73 is coupled to face in the optical axis direction.

The first lens barrel 45 is disposed on the inner circumferential side of the first lens cam 43 and has a cylindrical shape. The first lens barrel 45 is disposed in a structure in which a cam protrusion 45a is provided on an outer circumferential surface thereof so that the cam protrusion 45a is inserted into the cam groove 43a of the first lens cam 43.

In addition, the first lens barrel 45 is coupled to the plurality of first lens shafts 57 fixed to protrude in the optical axis direction on the subject side surface of the zoom base 5 and coupled in a structure capable of moving straight in the optical axis direction. . That is, the first lens barrel 45 is provided with a hole (not shown) in which the first lens shafts 57 are inserted and slide in the optical axis direction. Accordingly, the first lens barrel 45 may move straight in the optical axis direction as the first lens cam 43 rotates.

The first lens barrel 45 is provided with a screw groove therein, and the first lens holder 47 having the first lens 41 coupled therein is screwed therein. Of course, the outer peripheral surface of the first lens holder 47 is provided with a screw thread that can be rotatably coupled to the screw groove provided in the first lens barrel 45. When the first lens barrel 45 and the first lens holder 47 are screwed together to adjust the focus, when the camera is released, the fixing means are set so that the focusing is matched with each other (bonding) and the like. Is fixed by. Therefore, as the first lens barrel 45 moves in the optical axis direction, the first lens may also be fed in the optical axis direction.

The second lens assembly 15 may include an outer second lens cam 71 disposed on an outer circumference, another inner second lens cam 75 disposed on an inner circumference of the outer second lens cam 71, and a second lens. 77 includes a second lens barrel 79 coupled therein.

The outer second lens cam 71 disposed on the outer circumference has a cylindrical shape and is fixedly coupled to the zoom base 5 by a screw or the like. The outer second lens cam 71 has a spiral cam groove 71a (shown in FIG. 15) formed at an inner circumferential surface at intervals of 120 °.

The inner second lens cam 75 disposed on the inner circumference of the outer second lens cam 71 is coupled to the cam groove 71a provided in the outer second lens cam 71 and along the cam groove 71a. Cam projections 75a (shown in FIG. 12) are provided on the outer circumferential surface at intervals of 120 ° to enable movement.

The inner second lens cam 75 is coupled to the lens cam shaft 73 as a power transmission member in the optical axis direction. Therefore, the inner second lens cam 75 is rotated by the rotation of the first lens cam 43 and is moved in the optical axis direction. The inner second lens cam 75 has three cam grooves 75b spirally formed therein at 120 ° intervals.

The second lens barrel 79 is provided with a cam protrusion 79a (shown in FIG. 11) at an interval of 120 ° on the outer circumferential surface thereof, so that the cam groove 75b provided on the inner circumferential surface of the inner second lens cam 75 is provided. Combined to move along. In addition, the second lens barrel 79 is coupled to the second lens shaft 81 (shown in FIG. 10) coupled to the zoom base 5 in the optical axis direction so as to slide straight in the optical axis direction. Therefore, the second lens barrel 79 has a structure that moves straight in the optical axis direction by the rotation of the inner second lens cam 75. Of course, the second lens barrel 79 has a structure in which the second lens 77 is pressed into the inner surface and fixed.

Referring to the zoom operation of the zoom lens assembly is made in detail as follows. FIG. 14 is a closed state, FIG. 15 is a wide (wide angle end) state, and FIG. 16 is a cross-sectional view of the zoom lens assembly in a tele state in a longitudinal direction.                     

First, when a pulse signal for driving the step motor magnet 19 is sent to the coils 1 to 4 by a control unit (not shown), the step motor magnet 19 rotates 45 ° in one pulse. Therefore, as shown in FIG. 17, when two pulses are input to the coil, the step motor magnet 19 rotates by 90 °. When the step motor magnet 19 rotates under such control, the first and second lens assemblies 13 and 15 are fed to zoom. That is, the rotational force of the step motor magnet 19 rotates the first lens cam 43 counterclockwise through the power transmission gears 11. The cam protrusion 45a of the first lens barrel 43 moves along the cam groove 43a provided on the inner circumferential surface of the first lens cam 43. At this time, the first lens barrel 43 is only fed in the optical axis direction by the first lens shaft 57. However, when operating from close to wide (wide end) according to the shape of the cam groove 43a provided on the inner circumferential surface of the first lens cam 43, as shown in FIG. When operating from wide (wide end) to tele (telephoto), the subject is directed.

At the same time, the rotational force of the first lens cam 43 is transmitted to the lens cam shaft 73 to rotate the inner second lens cam 75 counterclockwise. As the inner second lens cam 75 rotates, the second lens barrel 79 moves along the cam groove 75b provided on the inner circumferential surface of the inner second lens cam 75 with the protrusion 79a provided on the outer circumferential surface. do. In this case, since the second lens barrel 79 is coupled to the second lens shaft 81, the second lens barrel 79 moves straight in the optical axis direction. Since the protrusion 75a provided on the outer side of the inner second lens cam 75 is coupled to move along the cam groove 71a provided inside the outer second lens cam 71, the inner second lens cam is provided. 75 moves in the optical axis direction while moving straight at the same time as the rotation. As a result, the second lens assembly 15 adds the amount of feeding by the rotation and the straight movement of the inner second lens cam 75 and the amount of the feeding by the straight movement of the second lens barrel 79, and the subject from the closed state to the wide state. The feeding is done to the side. Therefore, as shown in FIG. 18, the zoom trajectory of the second lens assembly 15 is directed toward the subject when moving to the wide (wide end) in the closed state, and is tele (telephoto) at the wide (wide end). When moving to, the trajectory drawn toward the opposite side of the subject is drawn.

19 is a perspective view of a portable communication device for explaining an embodiment according to the present invention, showing a cellular phone 1 with an optical zoom lens assembly 3 coupled thereto. 20 is a configuration diagram illustrating a method of controlling a close of a zoom lens assembly by applying an example of folding a folder by an electric motor, and FIG. 21 illustrates a close control method of a zoom lens assembly through the configuration shown in FIG. 20. A flow chart is shown.

The control unit CU is provided to the cellular phone 1 and is electrically connected to receive signals from the folder close switch 507 and the folder close detection sensor 509. The folder close switch 507 may be installed in the first body 501 or the second body 503, and the first and second bodies 501 are folded together or folded at a predetermined angle by an operation thereof. It acts as a switch to make it happen.

In addition, the close detection sensor 509 is provided to the first body 501 and the second body 503, and when the first and second bodies 501 and 503 act to be collected from each other by an external force. It detects this and transmits a detection signal to the control unit (CU).

The control unit CU is electrically connected to control the zoom driving motor 9 that drives the optical zoom lens assembly in response to a signal from the folder close switch 507 or the folder close detection sensor 509. In addition, the control unit CU is electrically connected to control the folder opening and closing control motor 513 by receiving a signal from the folder close detection sensor 509.

The zoom drive motor 9 and the folder opening / closing control motor 513 for driving the optical zoom lens assembly 3 are provided in the first and second bodies 501 and 503 described above.

A close control method of the optical zoom lens assembly configured as described above will be described with reference to FIG. 21.

The control unit CU receives a folder close switch 507 signal (S601), and after receiving the folder close switch 507 signal (S601), determines whether the received signal is a close signal (S603). ). If the input signal is a close signal after the step S603 of determining whether to apply the close signal, the zoom driving motor 9 is controlled to operate the optical zoom lens assembly 3 in a closed state (S605). If it is not the close signal in the step S603 of determining whether to apply the close signal, the control unit 420 moves to the signal input step S601 of the folder close switch 507 and performs control. Subsequently, after controlling the zoom driving motor 9 to operate the optical zoom lens assembly 3 in a closed state (S605), the folder opening / closing motor 513 is controlled to close the folder (S607).

FIG. 22 is a flowchart illustrating another embodiment of FIG. 21. Referring to FIG. 22, a close control process of a zoom lens assembly of a control unit CU is as follows.

When the user folds the first and second bodies 501 and 503 together, the control unit CU receives a signal from the folder close detection sensor 509 (S621). After receiving the signal of the detection sensor 509 (S621) it is determined whether the input signal is closed (S623), the optical zoom lens assembly when the input signal in the determination step (S623) is a close signal The zoom driving motor 9 is controlled to be closed at high speed (S625). In the step S625, the driving speed of the zoom driving motor 9 is preferably one pulse about 1 ms. This zoom drive motor 9 is for controlling the optical zoom lens assembly 3 in a closed state more quickly.

Subsequently, the control unit CU receives the folder close switch 507 signal (S627) and determines whether the received signal is the close signal after step S627 of receiving the folder close switch 507 signal. (S629). If the input signal is the close signal after the step S629 of determining whether the close signal is applied, the zoom driving motor 9 is controlled to operate the optical zoom lens assembly 3 in a low speed close state (S631). In the step S631, the driving speed of the zoom driving motor 9 is preferably one pulse about 3ms. This zoom drive motor 9 is controlled at a normal control speed.

If it is not the close signal in the step S629 of determining whether the close signal is applied, the control unit 420 moves to the signal input step S621 of the folder close detection sensor 109 to perform control. Subsequently, after controlling the zoom driving motor 9 to operate the optical zoom lens assembly 3 in a low-speed closed state (S631), the folder opening / closing control motor 513 is controlled to close the folder (S633).

FIG. 23 illustrates a foldable cellular phone in which the first and second bodies 501 and 503 are manually folded as an example. The control unit CU receives an input signal of the folder close detection sensor 509 and an optical zoom lens. The state in which it is electrically connected so that control of the zoom drive motor 9 which drives the assembly 3 is shown. Unlike the above-described embodiment, this embodiment is applied to a folding structure in which two bodies are only folded manually, and the mounting of the folder close detection sensor 509 is the same as the above-described example. , 503). The close control method of the zoom lens assembly for this configuration will be described in detail as follows.

The control unit CU receives a signal from the folder close detection sensor 509 (S651). Then, after receiving the signal of the detection sensor 509 (S651), it is determined whether the closed signal is input to the input signal (S653). When the input signal is a close signal after the determination step S653, the zoom driving motor 9 is controlled to operate the optical zoom lens assembly 3 in a closed state (S655). If the signal is not a close signal after the determination step S653, the process returns to the step S651 of receiving the signal of the folder close detection sensor 509.

The optical zoom lens assembly 3 is mounted on a cellular phone, a portable electronic device, or a communication device in which two bodies are folded through a close communication method of a portable communication device and a zoom lens assembly having a protection structure of the zoom lens assembly. In this case, when the two bodies are folded, the optical zoom lens assembly 3 may be safely stored to prevent breakage of the optical zoom lens assembly 3.

As such, when the optical zoom lens assembly is mounted on a folding portable communication device, a method and a zoom lens assembly in which a zoom lens assembly is controlled in a closed state are preferentially performed when two bodies are hinged to each other. Having an accommodating part that can be accommodated, the damage of the optical zoom lens assembly can be prevented, thereby increasing the reliability of the portable communication device.

Claims (6)

In a clamshell portable communication device equipped with an optical zoom lens assembly, Receiving a folder close switch signal; Determining whether the received signal is a close signal after receiving the folder close switch signal; Controlling a zoom driving motor to operate an optical zoom lens assembly in a closed state when the input signal is a close signal after determining whether the close signal is applied; Close control method of a zoom lens assembly comprising a. The method of claim 1, further comprising controlling a folder opening / closing motor such that the folder is closed after controlling the zoom driving motor to operate the optical zoom lens assembly in a closed state. The method of claim 1, further comprising: before receiving the folder close switch signal; Receiving a folder close detection sensor signal; Determining whether the input signal is closed after receiving the signal of the detection sensor; Controlling the zoom driving motor to close the optical zoom lens assembly when the signal input in the determining step is a close signal; Close control method of a zoom lens assembly further comprising. In a clamshell portable communication device equipped with an optical zoom lens assembly, Receiving a folder close detection sensor signal; Determining whether a closed signal is input to the input signal after receiving the signal of the detection sensor; Controlling the zoom driving motor to operate the optical zoom lens assembly in a closed state when the input signal is a close signal after the determining step; Close control method of a zoom lens assembly comprising a. A first body having a keypad; A second body having a display unit; A hinge part configured to couple the first body and the second body to be rotatable with each other; An optical zoom lens assembly coupled to at least one of the first body, the second body and the hinge portion; An accommodation part provided in the first body or the second body such that the optical zoom lens assembly is accommodated in a zoom state; Portable communication device having a protective structure of the zoom lens assembly comprising a. The portable communication device of claim 5, wherein the housing part has a protection structure of a zoom lens assembly formed of a groove larger than a maximum feeding distance of the optical zoom lens assembly.

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