WO2006010341A1

WO2006010341A1 - The microdistance mode and ordinary mode switching device for the photography module

Info

Publication number: WO2006010341A1
Application number: PCT/CN2005/001154
Authority: WO
Inventors: Haoqin Luo
Original assignee: Koide (S.D.) Electronic Factory Ltd.
Priority date: 2004-07-29
Filing date: 2005-07-29
Publication date: 2006-02-02
Also published as: CN2715196Y

Abstract

A microdistance mode and ordinary mode switching device for the photography module includes a fixing portion and a controlling portion. The fixing portion includes a holder (10) and a release ring (20) as well as a lens (42), and the controlling portion includes a controlling ring (20). The lens (42) is fixed into the release ring (20) by a lens barrel (40), and more than one magnet (21) is provided on the out side wall of the release ring (20). The magnet (54) on the controlling ring (50) is provided on the position corresponding to the magnet (21) on the release ring (20), the polarity direction of the provided magnet (54) corresponds to that of the magnet (21) on the release ring. The present invention utilizes the magnetic force to move the release ring (20) with respect to the holder (10).

Description

Camera module macro and normal mode switching device

The invention relates to a switching device for a macro mode and a normal mode in an optical imaging device, in particular to a camera module having a lens releasing device, so that the lens can be freely moved away from the photosensitive chip from a normal focal length to realize a normal mode and Macro mode switching. Background technique

Most of the camera lenses on the market today can only shoot images that are farther than 400mm. In order to make the camera lens on the mobile phone capture a close-up image (40mm) like a camera, a macro and normal mode switching device of the camera module is required. The macro and normal mode switching devices of the current camera module generally have such a structure: they are composed of a base, a cylinder provided on the base, a discharge ring, and a spring. The discharge ring is located on the end surface of the cylinder, and a portion thereof projects into the cylinder, and the spring connects the discharge ring and the cylinder to bring the discharge ring into close contact with the cylinder. The sensor module of the camera module is located at the bottom of the cylinder. The release ring has a built-in lens. A plurality of wheel-shaped projections are provided on the end face of the discharge ring which is in contact with the end surface of the cylinder, and the end faces of the cylinder are provided with a plurality of recesses matching the projections. When shooting, the protrusion is embedded in the notch when in the normal mode. When the macro mode is to be performed, after the protrusion of the release ring is pulled out of the recess of the end surface of the cylinder, the release ring is rotated and fixed, so that the lens in the release ring moves on the optical axis to achieve the purpose of changing the focal length. . The prior art switching device has such drawbacks: 1. When the mode is switched, the projections on the release ring are often subject to wear due to the rotation of the release ring and the presence of the tension spring. The height of the projections on the release ring and the four faces of the cylinder end face must be the same. Otherwise, the imaging surface of the photosensitive chip of the camera module opposed to the lens placed in the release ring becomes inclined. Therefore, when the bumps on the worn-out release ring become highly inconsistent, the photographic effect is affected. 2. In the prior art, the spring acts to tension the discharge ring containing the lens. However, due to the deviation of the bending angle and the deformation, it is difficult for the spring to apply a uniform force. And the spring will deform when used. Therefore, the release ring is often not tightly contacted with the cylinder, which causes an error in the distance between the lens and the photosensitive chip, which also affects the imaging effect. Summary of the invention

It is an object of the present invention to provide a camera module macro and normal mode switching device. The camera module macro and normal mode switching device can ensure the parallelism between the lens and the imaging surface of the sensor chip of the camera module, and can improve the accuracy of the distance between the lens and the sensor chip.

In order to achieve the above object, the present invention provides a camera module macro and normal mode switching device including a fixed portion and a control portion, the fixed portion including a base, a release ring, and a lens, and the control portion includes a control ring. a hollow body is arranged on the side of the base, and the release ring is located at the hollow body Inside, the release ring is movably connected to the hollow body. The hollow body and the release ring are provided with a guiding structure and a limiting member, and the guiding structure and the limiting member limit the relative position between the hollow body and the releasing ring. The lens is fixed in the discharge ring through the lens barrel, and the outer side wall of the release ring is provided with more than one magnet. The control ring is disposed coaxially with the fixed portion and is not in contact with the release ring of the fixed portion. A magnet is disposed on the control ring at a position corresponding to the magnet of the release ring, and the polarity direction and the number of the magnet are corresponding to the magnets on the release ring, and the control ring utilizes the magnet disposed on itself and the magnet on the release ring The resulting suction or repulsive force causes the release ring to move relative to the base.

According to an embodiment of the present invention, the guiding structure may include more than one guiding portion W and a guide plate that matches the guide plate. The guiding recess is provided on the side wall of the hollow body, and the guiding plate is disposed on the outer side wall of the discharge ring, and the guiding plate protrudes from the guiding concave portion to the outside of the hollow body. The limiting component comprises a limiting ring, and the limiting ring is arranged on one side of the opening portion of the hollow body to limit the stroke of the guiding plate.

According to an embodiment of the present invention, the inner wall of the discharge ring may be provided with a thread, and the lens barrel is fixed in the release ring by screwing.

According to an embodiment of the invention, the side of the guide plate of the discharge ring facing the hollow body may be provided with a light shielding sheet which is located outside the outer side wall of the hollow body.

According to an embodiment of the invention, the outer side wall of the control ring is provided with a positioning block. The control ring may be connected with a rotating ring, and a transparent film may be disposed between the control ring and the rotating ring. A handle may be provided on the swivel.

According to an embodiment of the present invention, the side wall of the control ring may be provided with a plurality of recesses, and the ring surface of the rotating ring is provided with a latch corresponding to the IHJ portion, and the buckle buckle is turned inside the portion. The ring is fixed to the control ring.

According to an embodiment of the present invention, the number of the guiding recesses may be two, the number of the guiding plates is two, and one side of the guiding plate is provided with a magnet; the number of magnets provided on the outer side wall of the control ring is The number of magnets provided on the guide plate is twice; a mounting position is provided on the outer side wall of the control ring, and the magnet is placed in the mounting position.

According to another embodiment of the present invention, the number of the guiding recesses may be four, and the four guiding recesses may be uniformly distributed on the circumferential surface; the number of the guiding plates is four, on one side of the guiding plate. A magnet is disposed; the outer side wall of the control ring is provided with four magnet mounting positions, and the mounting position corresponds to the position of the guide plate, and a magnet is disposed in the mounting position.

The invention has the following outstanding effects:

1. In the present invention, when the macro and the normal mode are switched, the moving direction of the releasing ring is guided by the guiding HJ portion of the hollow body side wall and the inner cavity of the hollow body. Throughout the process, the release ring performs linear motion. The linear motion makes the moving parts move smoothly and wears less. It can keep the lens in the release ring and the imaging surface of the photosensitive chip fixed on the base for a long time. More refined With a certain degree of balance, the optical axis of the lens does not shift, which is beneficial to the camera effect. On the other hand, the stroke of the release ring is controlled by the positioning ring and the guide recess of the end of the hollow body of the base. The stroke of the release ring is precisely controlled. When switching, the distance between the lens and the sensor chip can be set to a preset distance, which can improve the accuracy of the distance between the lens and the sensor chip.

2. Since the invention utilizes the suction and repulsive force between the magnets to drive the ascending and descending of the release ring, the magnetic force of the magnet is uniform and long-lasting, and the lens deviation can be avoided due to the deviation of the bending angle of the spring and the unevenness of the deformation. The situation happened. At the same time, there is no problem that the spring is deformed for a long time. In addition, the indirect control of the movement of the core component release ring by the magnetic force can avoid damage to the core component caused by improper operation when the core component is manually controlled.

3. Since the swivel, transparencies and control loop of the present invention are assembled on the panel of a mobile phone or a camera, the lens barrel, the positioning ring, the release ring and the base are independently assembled in the mobile phone or the camera, and there is no physical between them. The upper contact makes it extremely convenient to mount the invention in a mobile phone or camera. At the same time, the invention can be installed by opening a hole of a certain size in the outer casing of the mobile phone or the camera, so that the product has high compatibility with a mobile phone or a camera on the market.

4. The inner wall of the discharge ring of the present invention is provided with a thread, and the lens barrel is fixed in the discharge ring by screwing. The screwing can be used to adjust the distance between the lens in the lens barrel and the photosensitive chip in the susceptor while screwing the lens barrel. DRAWINGS

1 is an exploded view of a perspective of Embodiment 1 of the present invention;

Figure 2 is an exploded view of another perspective of Embodiment 1 of the present invention;

Figure 3 is a front elevational view of the embodiment 1 of the present invention after the camera module is attached;

Figure 4 is a cross-sectional view showing a first embodiment of the present invention applied to a mobile phone;

Fig. 5 is a perspective view showing a first embodiment of the present invention without a camera module. detailed description

Example 1

In Fig. 1, Fig. 2, Fig. 3, and Fig. 4, the camera module pitch and normal mode switching device of the present embodiment includes a fixed portion 1 and a control portion 2. The fixed portion 1 includes a base 10, a discharge ring 20, a lens 42, and the control portion includes a control ring 50.

As shown in Figures 1 and 2, a hollow body 13 is provided on the side of the base 10. The bleed ring 20 is located within the hollow body 13 and is movably coupled to the hollow body 13. The hollow body 13 and the discharge ring 20 are provided with a guiding structure and a limiting member. The guiding structure and the limiting member limit the relative position between the hollow body 13 and the discharge ring 20. The guiding structure consists of four guiding recesses 12 and four guiding plates 22 which are matched to the guiding plates 22. The guiding recesses 12 are all hooked on the side walls of the hollow body 13. The adjacent two guiding recesses 12 are circumferentially separated by an angle of 90 degrees. The guide plate 22 is provided on the outer side wall of the discharge ring 20. When the guide plates 22 are joined from the guide recesses 12, the guide plates 22 protrude from the guide recesses 12 beyond the hollow body 13. The stop member includes a stop ring 30 disposed at the open end of the hollow body 13 for restricting the stroke of the guide plate 22. A thread 25 is provided in the inner wall of the discharge ring 30.

The lens 42 is fixed in the lens barrel 40. The outer side of the lens barrel 40 is provided with a thread 41 which is fixed in the discharge ring 20 by screwing. A light shielding sheet 23 is provided on the side of the guide plate 22 of the discharge ring 20 toward the hollow body 13. When the discharge ring 20 is placed in the hollow body 13, the light shielding sheet 23 is located outside the outer side wall of the hollow body 13, and its inner side surface shape matches the outer side wall surface of the hollow body 23. The area of the light shielding sheet 23 is larger than that of the guiding concave portion 12, so that light is prevented from entering the hollow body 13 from the guiding concave portion 12, affecting the photographic effect. The side of the four guide plates 22 of the discharge ring 20 on which the light shielding sheets 23 are not provided is provided with the magnets 21, because the guide plates 22 are evenly distributed on the circumference of the side walls of the discharge ring, so that the magnets 21 are also uniformly distributed on the discharge ring. On the circumference of the section. The magnetic poles of the two adjacent magnets are opposite in direction.

The control ring 50 of the control portion 2 is disposed coaxially with the fixed portion 1 and is not in contact with the discharge ring 20 of the fixed portion 1. Four mounting positions 53 are uniformly provided on the side wall of the control ring 50 corresponding to the magnet 21 of the discharge ring 20. Four magnets 54 are mounted in the mounting position 53. The magnetic poles of the adjacent two magnets 54 are opposite in direction. The outer side wall of the control ring 50 is provided with a positioning block 52. The positioning block 52 causes the control ring 50 to be stuck on the outer casing of the mobile phone when the macro or normal mode is switched, and the position of the control ring 50 is limited so that it cannot be rotated freely. A swivel 72 is attached to one side of the control ring 50. The side wall of the control ring 50 is provided with a plurality of recesses 51. A lock 71 corresponding to the recess 51 is provided on the ring surface of the swivel 72. The latch 71 is fastened in the recess 51 to fix the swivel 70 to the control ring 50. A transparent film 60 is disposed between the control ring 50 and the swivel 70. The swivel 70 is provided with a recess 73 toward one side of the transparent film 60. The transparencies 60 are pressed into the recess 73 by the control ring 50. The function of the transparencies 60 is to protect the photographic lens from external dust and to prevent direct contact and impact of the photographic lens. The swivel 70 is also provided with a handle 72 that allows the user to rotate the swivel.

Its working principle is as follows:

In Fig. 4, when applied in a mobile phone, the photosensitive chip 90 of the camera module 91 is fixed to the bottom of the hollow body 13 of the apparatus of the present invention. The swivel 70, the transparencies 60 and the control ring 50 of the control portion 2 of the present invention are assembled on the mobile phone panel 81, and the retaining ring 30, the ejecting ring 20 and the base 10 of the fixed portion 1 are independently assembled in the mobile phone 80. There is no physical contact between the control portion 2 and the fixed portion 1. Assuming that the original state of the device is in the normal mode, that is, the polarity of each of the magnets 54 on the control ring 50 is the same as the polarity of the magnet 21 on the discharge ring 20, the magnets are in a state of generating a repulsive force. At this time, the guide plate 22 is at the other end of the guide recess 12. When the user turns the swivel 70, the lock 71 will drive the control ring 50 to rotate. After the control ring 50 is rotated to the corresponding position, the polarity of each of the magnets 54 on the control ring 50 is opposite to the polarity of the corresponding magnet 21 on the discharge ring 20, and the magnets are in a state of generating suction. At this time, the magnet 21 of the release ring 20 is driven by the suction force. The release ring 20 moves axially. After the guide plate 22 of the release ring 20 is moved to the position of the limit ring, the release ring stops moving and continues to remain in the stopped position. In this way, the device completes the switching from the normal mode to the macro mode. Example 2:

In the present embodiment, the number of the guide recesses 12 is two, and the two guide recesses 12 are distributed at intervals of 180 degrees. The number of the guide plates 22 is two, and the magnet 21 provided on the discharge ring 20 is fixed to the side of the guide plate 22 facing the limit ring 30. The outer side wall of the control ring 50 is provided with two magnet mounting locations 53. The mounting position 53 corresponds to the position of the guide plate 22, and the magnet 54 is placed in the mounting position 53. The rest of the embodiment is the same as the specific embodiment 1. Example 3:

In the present embodiment, the number of the guide recesses 12 is two. The two guiding recesses 12 are distributed 180 degrees apart. The number of the guide plates 22 is two. The magnet 21 provided on the discharge ring 20 is fixed to the side of the guide plate 22 facing the limit ring 30. The magnets 21 provided on the discharge ring 20 have the same magnetic pole direction. The outer side wall of the control ring 50 is provided with four magnet mounting locations 53 which are evenly distributed over the annulus and four magnets 54 are placed in the mounting position 53. The polarities of the two adjacent magnets are opposite. When the control ring 50 is rotated, the magnet 54 on the control ring 50 also changes position to produce an attractive or repulsive force with the magnet 21 on the discharge ring 20. This allows the release ring to move. The rest of the embodiment is the same as that of the specific embodiment 1.

Further, in other embodiments, the guiding structure may also be composed of a guiding recess and a guiding plate. The position of the guiding structure is the same as that of the specific embodiment 1 described. At this time, the even-numbered magnets can be directly embedded in the side walls of the discharge ring and the control ring, and the magnets are placed. The principle is the same as that of the above embodiment.

The present invention can also place a greater number of magnets on the discharge ring in order to increase the magnetic force of the magnet. The number of magnets on the control ring is also changed accordingly.

Claims

Claims: A camera module macro and normal mode switching device, comprising: a fixed part (1) and a control part (2), wherein the fixed part (1) comprises:

a base (10) having a hollow body (13) on a side thereof;

a discharge ring (20), located in the hollow body (13), movably connected to the hollow body (13), the hollow body (13) and the discharge ring (20) being provided with a guiding structure and a limit The guiding structure and the limiting member limit the relative position between the hollow body (13) and the releasing ring (20), and the outer side wall of the discharging ring (20) is provided with more than one magnet (21);

The lens (42) is fixed in the discharge ring (20) through the lens barrel (40);

The control part (2) comprises:

a control ring (50) coaxial with the fixed portion and located on one side of the fixed portion, not in contact with the release ring (20) of the fixed portion, the control ring (50) and the magnet of the release ring (20) (21) A magnet (54) is disposed at a corresponding position, and the polarity direction and the number of the magnet (54) correspond to the magnet (21) on the discharge ring, and the magnet (54) and the discharge are provided on the same The suction or repulsive force generated by the magnet (21) on the ring (20) causes the discharge ring (20) to move relative to the base (10).

2. The camera module macro and normal mode switching device according to claim 1, wherein: the guiding structure comprises one or more guiding recesses (12) and guiding plates (22), guiding recesses (12) and guiding The plates (22) are matched; the guiding recesses (12) are provided on the side walls of the hollow body (13), the guiding plates (22) are arranged on the outer side walls of the discharge ring (20), and the guiding plates (22) are guided from the guiding recesses (12) extending out of the hollow body (13); the limiting member comprises a limiting ring (30) opposite to the hollow body (13), limiting the stroke of the guiding plate (22).

3. The camera module macro and common mode switching device according to claim 2, wherein: the inner wall of the release ring (20) is provided with a thread (25), and the lens barrel (40) is screwed. The combination is fixed in the release ring (20).

4. The camera module macro and normal mode switching device according to claim 2, wherein: the side of the guide plate (22) of the release ring facing the hollow body (13) is provided with a light shielding film. (23), the light shielding sheet (23) is located outside the outer side wall of the hollow body (13).

5. The camera module macro and common mode switching device according to claim 2, wherein: the outer side wall of the control ring (50) is provided with a positioning block (52).

6. The camera module macro and normal mode switching device according to claim 5, wherein: the control ring (50) is connected to the side with a swivel (70); the control ring (50) and the swivel (70) ) is provided with transparencies (60).

7. The camera module macro and normal mode switching device according to claim 5, wherein: the rotating ring (70) is provided with a handle (72).

8. The camera module macro and common mode switching device according to claim 5, wherein: the side wall of the control ring (50) is provided with a recess (51), and the swivel (70) ring A latch (71) corresponding to the recess (51) is provided on the surface, and the latch (71) is fastened in the recess (51) to fix the swivel (70) and the control ring (50).

The camera module macro and common mode switching device according to any one of claims 2 to 8, characterized in that: the number of the guiding recesses (12) is two, and the number of the guiding plates (22) For two, a magnet (21) is disposed on one side of the guide plate (22); the number of magnets provided on the outer side wall of the control ring (50) is the number of magnets provided on the guide plate (22) Twice; a mounting position (53) is provided on the outer side wall of the control ring (50), and a magnet (54) is placed in the mounting position (53).

The camera module macro and common mode switching device according to any one of claims 2 to 8, characterized in that: the number of the guiding recesses (12) is four, and the four guiding recesses (12) are in the circumference Uniformly distributed on the surface; the number of the guide plates (22) is four, and a magnet (21) is disposed on one side of the guide plate (22); the outer side wall of the control ring (50) is provided with four magnets Bit ( 53 ), the mounting position (53) corresponds to the position of the guide plate (22), and the magnet (54) is placed in the mounting position (53).