CN102590975B - Image acquisition mechanism - Google Patents

Abstract

The invention relates to an image capture mechanism, which includes a platform group and two lens holders. The platform group is equipped with an image sensor. The platform group is movably located on a base. The platform group has a top lever and the two lens holders are movable. One of the lens holders has a positioning portion. When the lens holder with the positioning portion approaches the platform group, the positioning portion pushes against the top latch of the platform group, causing the platform group to move between the lens holder and the base. An escape space is formed between the holders, and part of the other lens holder can be moved into the escape space.

Description

image capture mechanism

technical field

The present invention relates to an image capture mechanism used in cameras or other optical products, and in particular refers to an image capture mechanism with a smaller overall volume.

Background technique

Using a longer focal length to take pictures, or taking pictures in places where the environment will shake, often results in blurred images due to camera shake. Therefore, most of the current cameras have an image stabilization function (Image Stabilizer). It is installed on a movable platform group, with a gyro sensor used to detect the degree of camera shake, and then controls the platform group to move the image sensor correspondingly with the state of the camera. When the camera is turned on, the retractable lens inside the camera will extend out of the body, and receive external light and project it stably to the image sensor to keep the image clear. After the camera is turned off, the lens groups of the telescopic lens will be folded on top of each other, and stored inside the fuselage at a position adjacent to the platform group.

As the camera becomes more and more portable, the volume of each component of the camera must also be changed accordingly. The common way is to design the structure smaller and smaller, or as disclosed in Japanese Patent Application Laid-Open No. Hei 07-199019, it will Each lens group of the telescopic lens is designed to be a reversible structure, so that the stored lens group can more effectively use the limited space in the body.

Although the telescopic lens can be reduced in size by changing the mechanism design above, in order to prevent the telescopic lens from interfering with the platform group used to stabilize the image, there is still a gap between the telescopic lens and the platform group to avoid unstable operation or damage, but the aforementioned gaps also increase the overall size of the camera, making it impossible to shrink the camera further.

Contents of the invention

The technical problem to be solved by the present invention is to provide an image capture mechanism, which has a thinner overall thickness after storage, and reduces the number of devices installed inside the camera. space taken up.

The technical solution adopted by the present invention to solve the technical problem is that the image capture mechanism provided includes a platform group and two lens holders, the platform group is provided with an image sensor, and the platform group is movably arranged on the base, The platform set has a catch portion; the two lens holders are movably close to or away from the platform set, one of the lens holders has a positioning portion, and when the lens holder with the positioning portion is close to the platform set, the positioning portion Pushing against the top catch of the platform set moves the platform set to form a retreat space between the lens holder and the base, and another lens holder can move into the retreat space.

In order to ensure that the platform set can be shifted reliably, the jacking portion has a first slope, the positioning portion has a second slope, the slope direction of the second slope corresponds to the slope direction of the first slope, and the positioning portion abuts against When the latch portion is pressed, the first inclined surface contacts the second inclined surface, so that the platform set is pushed to be displaced and fixed.

The image capture mechanism implementing the present invention has the following beneficial effects: the overall thickness is thinner after storage, reducing the space for setting it inside the camera.

Description of drawings

Fig. 1 is the three-dimensional assembly diagram of a preferred embodiment of the present invention;

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention;

Fig. 3 is a partially exploded perspective view of a preferred embodiment of the present invention, mainly showing the platform set and the first lens holder;

Fig. 4 is the front view of a preferred embodiment of the present invention;

Fig. 5 is a partial cross-sectional view of a preferred embodiment of the present invention, mainly showing that the first lens seat abuts against the first platform;

Fig. 6 is a schematic diagram of a preferred embodiment of the present invention, mainly showing that the rotary member is in the second position;

Fig. 7 is similar to Fig. 6, mainly showing the state where the first lens seat pushes against the first platform; and

Fig. 8 is similar to Fig. 6, mainly showing that the rotary member is in the first position.

Detailed ways

The detailed structure, features, assembly or usage provided by the present invention will be described in the subsequent detailed description of the implementation. However, those skilled in the field of the present invention should understand that these detailed descriptions and specific examples for implementing the present invention are only for illustrating the present invention, and are not intended to limit the patent application scope of the present invention.

The technical contents and features of the present invention are described in detail below in conjunction with several accompanying drawings, wherein a brief description of each accompanying drawing is as follows:

Fig. 1 is the three-dimensional assembly diagram of a preferred embodiment of the present invention;

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention;

Fig. 3 is a partially exploded perspective view of a preferred embodiment of the present invention, mainly showing the platform set and the first lens holder;

Fig. 4 is the front view of a preferred embodiment of the present invention;

Fig. 5 is a partial cross-sectional view of a preferred embodiment of the present invention, mainly showing that the first lens seat abuts against the first platform;

Fig. 6 is a schematic diagram of a preferred embodiment of the present invention, mainly showing that the rotary member is in the second position;

Fig. 7 is similar to Fig. 6, mainly showing the state where the first lens seat pushes against the first platform; and

Fig. 8 is similar to Fig. 6, mainly showing that the rotary member is in the first position.

Please refer to FIG. 1 and FIG. 2, the image capture mechanism provided by a preferred embodiment of the present invention includes a base 10, a platform set 20, a first lens holder 30 and a second lens holder 40, the base 10 has Two first guide rails 12 are spaced parallel to each other.

As shown in FIGS. 2 to 4 , the platform set 20 has a first platform 21 and a second platform 22 , and the two opposite sides 23 of the first platform 21 respectively pass through the two first guide rails 12 of the base 10 , The first platform 21 can move along the first guide rail 12 relative to the base 10 toward the first direction 24 . The first platform 21 is provided with two second guide rails 25 arranged parallel to each other and spaced apart, and the extension direction of each second guide rail 25 is perpendicular to the first direction 24 . The image sensor 26 is arranged in the center of the second platform 22, and the two second guide rails 25 of the first platform 21 respectively pass through the positions of the second platform 22 relative to the image sensor 26 both sides, so that the image sensor 26 is located in the center of the first platform 21, and the second platform 22 is located at the center of the first platform 21. The second platform 22 can move along a second direction 27 perpendicular to the first direction 24 . The mutual movement of the image sensor 26 via the first platform 21 and the second platform 22 is used for controlling and compensating the jitter phenomenon caused by camera shaking.

The first lens holder 30 has a body 31 with a first lens group 32 in the center of the body 31 . A connecting portion 33 is provided on the edge of the body 31 . The connecting portion 33 has a positioning shaft 34 for guiding the first lens holder 30 . The second lens seat 40 has a ring frame 42, and a rotating member 44 is pivotally arranged in the ring frame 42. The rotating member 44 is provided with a second lens group 46, and the rotating member 44 can be driven to a first position relative to the ring frame 42 (as shown in FIG. 7 shown) and the second position (as shown in Figure 6). The first lens holder 30 is arranged on the adjacent side of the platform group 20 with the mode that the first lens group 32 corresponds to the image sensor 26, and the ring frame 42 of the second lens group 46 is adjacently arranged on the outside of the first lens holder 30, so that the first and second The lens holders 30, 40 approach or move away from the platform group 20 along the optical axis 50 along with the use state of the camera. When the camera is turned on and used, as shown in FIG. 6, the first and second lens holders 30, 40 move away from the platform. The direction of the group 20 moves, and the rotary member 44 of the second lens holder 40 turns to the second position simultaneously, and the first lens group 32 and the second lens group 46 are coaxial with the image sensor 26 on the optical axis, so that light can pass through the second lens group. The first and second lens groups 32, 46 are projected to the image sensor 26, and when the camera is turned off, as shown in Fig. 7 and Fig. 8, the first and second lens holders 30, 40 can move towards the direction close to the platform group 20 respectively and close to each other, the rotary member 44 turns back to the first position.

As shown in FIGS. 3 and 5 , the first platform 21 has an extension portion 52 on the outside of one of the second guide rails 25 , and a hollow receiving groove 54 is provided on the outside of the other second guide rail 25 . A top catch portion 56 is disposed on an outer edge of the extension portion 52 . The top catch portion 56 protrudes from the surface of the first platform 21 and has a first inclined surface 58 . The inclined direction of the first inclined surface 58 is the same as the first direction 24 . The inner surface of the connecting portion 33 of the first lens holder 30 has a positioning portion 36 , the positioning portion 36 forms a second slope 38 , and the slope direction of the second slope 38 corresponds to the slope direction of the first slope 58 .

As shown in FIGS. 7 and 8 , when the camera is turned off so that the lens holders 30 , 40 are folded, the first lens holder 30 moves toward the platform set 20 , and the positioning portion 36 abuts against the top catch portion 56 of the first platform 21 , Using the first slope 58 to contact the second slope 38, the first platform 21 is pushed and displaced a predetermined distance in the first direction 24 and fixed, and a retreat space 60 is formed between the second lens holder 40 and the second platform 22, and the rotation After turning to the first position, the component 44 can be accommodated in the retracting space 60 and the accommodating groove 54 of the first platform 21 .

Based on the above description, since the positioning portion 36 of the first lens seat 30 is used to push the top stop portion 56 of the first platform 21, the platform group 20 is shifted from the optical axis 50 and positioned at a fixed position, so that the platform group 20 can avoid interference. The position of the rotating member 44 of the second lens holder 40, the gap between the second lens holder 40, the first lens holder 30 and the platform group 20 can be further reduced, and the rotating member 44 can move to the accommodation groove 54 of the first platform 21 Inside, the components are interspersed with each other to further reduce the overall volume.

Therefore, by utilizing the above-mentioned technical features, the present invention can achieve the goal of having a thinner overall thickness after storage, and reducing its installation in the inner space of the camera.

Claims (4)

1. An image capture mechanism, characterized in that it comprises: A platform set is provided with an image sensor, the platform set is movably arranged on the base, and the platform set has a top catch portion; and The first lens seat and the second lens seat are movably close to or away from the platform set. The first lens seat has a positioning part. When the first lens seat is close to the platform set, the positioning part pushes against the platform set. The top catch portion moves the platform group to form a retreat space between the first lens holder and the base, and then a part of the second lens holder can move into the retreat space. 2 . The image capture mechanism according to claim 1 , wherein the platform set has a first platform, an extension part is provided on one side of the first platform, and the push-button part is provided on the extension part. 3 . 3 . The image capture mechanism according to claim 2 , wherein a hollow receiving groove is provided on the other side of the first platform opposite to the extension portion. 4 . 4. The image capture mechanism according to claim 1, wherein the push-button portion has a first slope, the positioning portion has a second slope, and the slope direction of the second slope corresponds to the slope of the first slope direction, when the positioning part abuts against the top catch part, the first inclined surface contacts the second inclined surface, so that the platform set is pushed to be displaced and fixed.