Stable optical filter conversion device

Abstract

The utility model discloses a stable optical filter conversion device, which comprises a front cover, a rear cover and a driving assembly, the driving assembly is arranged between the front cover and the rear cover and is used for driving a moving assembly to rotate, the rear cover is provided with a light hole, the moving assembly is provided with two optical filters with different spectrums, and the moving assembly can rotate in the horizontal direction. And the light filters with different spectrums are enabled to directly face the light-transmitting holes so as to filter light with different colors to penetrate through the light-transmitting holes, and limiting devices are correspondingly arranged on the moving assembly and the rear cover and are used for limiting the moving assembly so as to prevent the moving assembly from deviating during high-speed movement. The cost of the whole product is reduced through rotation of the movement assembly, the technical scheme that a micro motor and a worm are used in the prior art is omitted, meanwhile, the stability and reliability of the whole product are guaranteed through the design of the limiting device, and the whole product can be restrained within a certain range during rotation. And faults are avoided.

Description

Technical Field

[0001] The utility model relates to a camera device, in particular to a stable filter conversion device. Background Art

[0002] In the process of using the camera equipment, there will be some special camera applications, such as shooting at night. When shooting at night, in order to make the picture brighter and clearer, infrared light sources will be used for fill light, so as to achieve the purpose of clear shooting. In order to avoid the infrared light being interfered by other light sources at night, filter technology is further used to make the infrared light enter the photosensitive chip more stably. However, in order not to affect the daytime shooting, two sets of filters are required, one is a transparent filter (i.e. AR filter) for daytime use, and the other is a red filter (i.e. IR filter) for night use (or other filters with corresponding spectrum for corresponding light sources).

[0003] Therefore, the technical solution with filter conversion has begun to be applied in the field of camera equipment technology, such as the existing patent technology CN208367334U. It uses a motor to drive the worm to drive the filter system for conversion, so as to achieve the purpose of using filters with different spectra under different conditions. However, the above technology has the following defects: 1. The cost of use is high, and a built-in micro motor is required, which increases the overall cost of the product. 2. If the motor or worm fails or is blocked, the conversion cannot be achieved. 3. The filter is offset or inaccurately positioned under high-speed movement.

[0004] Therefore, a simpler, more stable and low-cost conversion device is needed to solve this problem. Summary of the invention

[0005] The purpose of the utility model is to solve the above defects and provide a stable filter conversion device, which uses a simple driving device, a motion device, and a reliable limiting device to solve the problems of cost and stability and reliability, thereby achieving the purpose of economy, stability and reliability.

[0006] The purpose of the utility model is achieved by the following methods:

[0007] A stable filter conversion device includes a front cover, a rear cover and a driving assembly. The driving assembly is arranged between the front cover and the rear cover and is used to drive the moving assembly to perform rotational motion. The rear cover is provided with a light-transmitting hole, and the moving assembly is provided with two filters with different spectra. The moving assembly can perform rotational motion in the horizontal direction so that filters with different spectra are directly opposite to the light-transmitting hole and are used to filter light of different colors to pass through the light-transmitting hole. Limiting devices are provided on the moving assembly and the rear cover respectively, which are used to limit the moving assembly and prevent it from deviating during high-speed motion. The rotational motion of the moving assembly is used to reduce the cost of the entire product, and the technical solution of using a micro motor and a worm in the prior art is eliminated. At the same time, a limiting device is designed to ensure the stability and reliability of the entire product so that it can be constrained within a certain range during rotation. Failures are avoided.

[0008] In the above description, as a preferred solution, the limit device is a rotation cavity provided on the motion component and a limit column provided on the back cover, and the limit column passes through the rotation cavity to limit the rotation range of the motion component. Through the design of the cavity structure, and the limit column is provided inside the cavity, when the motion component rotates left and right, the limit column limits the rotation range of the motion component to the edge inside the cavity, thereby realizing the limit function. The structure is simple and reliable, and will not generate additional resistance and interference, thereby ensuring the reliable operation of the entire device.

[0009] In the above description, as a preferred solution, the driving assembly includes an electromagnetic coil, a frame, a steering magnet and a swinging piece. The electromagnetic coil is wound around the outer periphery of the frame and is used to generate a magnetic field when powered on. The swinging piece is inserted into a hollow structure in the frame. The steering magnet is arranged in the swinging piece, and welding wires are formed at both ends of the electromagnetic coil. The swinging piece is pushed by electromagnetic force to achieve the purpose of reducing costs, and the movement method is simple and reliable. The magnetic field generated by the electromagnetic coil after power is applied is used to drive the magnet to move, thereby driving the swinging piece to rotate left and right, thereby achieving the switching of the filter. The technical solution has a simple structure and avoids the use of too many transmission structures, thereby reducing the failure rate. The entire device is more stable and reliable.

[0010] In the above description, as a preferred solution, the swing member is a long strip structure with a slot at one end for accommodating the steering magnet, a swing shaft is provided on the upper and lower surfaces of the slot, and a corresponding through hole is provided on the skeleton for matching with the swing shaft so that the swing member rotates around the swing shaft.

[0011] In the above description, as a preferred solution, the other end of the swinging member forms a swinging arm, and a protruding rotating head is provided at the top of the swinging arm facing the side of the rear cover. The rotating head is used to move in the slide rail, thereby causing the rotating bracket to generate a rotating motion, thereby achieving the purpose of switching the filter.

[0012] In the above description, as a preferred solution, the motion component includes two filters and a rotating bracket, the rotating bracket is provided with two filter holes, the filters are fixedly mounted on the filter holes to filter the light, and the rotating cavity is arranged at the lower end of the filter holes.

[0013] In the above description, as a preferred solution, a positioning hole and a vertical slide rail are provided between the two filter holes of the rotating bracket, the positioning hole is used to position the rotating bracket, and the slide rail generates force after receiving force to rotate the rotating bracket. The purpose of moving the rotating bracket is achieved by the cooperation of the slide rail and the rotating head.

[0014] In the above description, as a preferred solution, the ends of the front cover and the rear cover are provided with a recessed accommodating cavity for placing the drive assembly, and protective grooves are provided on the left and right sides of the rear cover near the accommodating cavity for protecting the welding wire. A light-transmitting hole is provided in the middle of the rear cover for the passage of light, and a limit column is arranged at the front end of the inner side of the lower cover. The technical solution adopts the method of directly electrically connecting the end of the electromagnetic coil directly to the metal welding head. Compared with the use of wires or PIN pin plugs, the advantage is that the operation is simpler. If a PIN pin plug is used, more defective rates will be generated, because the PIN pin plug is generally made of hard metal material. When it is welded with the metal welding head, because the two rigid materials are connected by welding, it is inevitable that it is easy to loosen when it is vibrated, resulting in a higher defective rate. The direct welding of the enameled wire of the electromagnetic coil reduces the intermediate components, and because of its soft characteristics, the welding point is more stable when it is vibrated.

[0015] In the above description, as a preferred solution, a limiting arc is further provided below the limiting column, and metal welding heads are further provided on both sides of the rear cover for electrical connection with the welding wire. The limiting arc serves to further limit the rotating bracket in the vertical direction, because the limiting column and the rotating cavity are positioned in the direction of rotation, and the limiting arc is positioned in the vertical direction, which makes the entire motion assembly more stable and reliable.

[0016] In the above description, as a preferred solution, the front cover is provided with a lens hole, and the lens hole and the light-transmitting hole are arranged concentrically for light to pass through, and a receiving cavity is also provided at the upper end of the front cover.

[0017] The beneficial effects of the utility model are as follows: the moving component generates a rotational motion based on the magnetic field generated by the electromagnetic coil, thereby reducing the cost of the technical solution of adopting the micro motor in the prior art, and the operation of the entire system is more stable and reliable. At the same time, the design of the limit column and the rotation cavity is adopted to limit and position the rotation angle, so that the operation of the system is more stable and the defect rate is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a right front perspective schematic diagram of this embodiment;

[0019] Figure 2 This is a three-dimensional schematic diagram of the left rear direction of this embodiment;

[0020] Figure 3 This is a schematic diagram of the decomposed structure of this embodiment;

[0021] Figure 4 This is a schematic diagram of the structure of the motion component and the drive component of this embodiment;

[0022] Figure 5 This is a front view of the rear cover of this embodiment;

[0023] Figure 6 This is a schematic diagram of the front cover of this embodiment;

[0024] Figure 7 This is a schematic diagram of the exploded structure of the swing member of this embodiment;

[0025] Figure 8 This is a schematic diagram of the decomposition structure of the electromagnetic coil in this embodiment.

[0026] Fig. 9 Schematic diagram of the combined structure of the drive assembly and the rear cover of this embodiment

[0027] Fig.10 Schematic diagram of the combined structure of the motion assembly and the rear cover of this embodiment

[0028] Fig.11 This is a schematic diagram of the decomposition structure of the motion components of this embodiment.

[0029] 1. Front cover, 101. Lens hole, 102. Guide column, 2. Drive assembly, 201. Electromagnetic coil, 202. Skeleton, 203. Steering magnet, 204. Swinging piece, 2041. Swing arm, 2042. Swing shaft, 2043. Rotating head, 2044. Slot, 205. Welding line, 3. Back cover, 301. Accommodating cavity, 302. Protective groove, 303. Light-transmitting hole, 304. Limiting column, 305. Supporting shaft, 306. Guide hole, 307. Limiting arc, 308. Mounting slot, 309. Welding head, 4. Moving assembly, 401. Rotating bracket, 402. Filter hole, 403. Filter, 404. Slide rail, 405. Holding part, 406. Rotating cavity, 407. Positioning hole, 5. Screw. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The purpose of the utility model is achieved by the following methods:

[0032] A stable filter conversion device, the structure of which includes a front cover 1, a driving component 2, a rear cover 3, a moving component 4, and screws 5. The front cover 1 is covered on the rear cover 3, and the two are fixedly connected together by screws 5, and a accommodating cavity 301 is formed at the upper ends of the two to accommodate the driving component 2. The front cover 1 structure also includes a lens hole 101 and a guide column 102. The lens hole 101 is arranged in front of the front cover 1. The function of the lens hole 101 is to install the lens and provide a channel for the lens to shoot. The guide column 102 is arranged behind the front cover 1. The function of the guide column 102 is to help the front cover 1 to be fixedly installed on the rear cover 3. The moving component 4 is movably installed on the rear cover 3 and can reciprocate on the rear cover 3 through the driving component 2. The rear cover 3 also includes a structural accommodating cavity 301, a protective groove 302, a light-transmitting hole 303, a limiting column 304, a support shaft 305, a guide hole 306, and a limiting arc 307. The light hole 303 is arranged at the center of the back cover. The function of the light-transmitting hole 303 is to provide a channel for the passage of light. The limiting column 304 is arranged at the lower end of the light-transmitting hole 303. Its function is to limit the swing range of the moving component 4 so that it rotates within the set range. The support shaft 305 is arranged between the light-transmitting hole 303 and the limiting column 304. Its function is to provide an installation basis for the rotation installation of the moving component 4. The moving component 4 rotates around the support shaft 305 as the axis. The limiting arc 307 is arranged below the limiting column 304. The limiting arc 307 is used to limit the range of up and down movement of the moving component 4 to prevent it from deviating in the vertical direction. The guide hole 306 is arranged below the limiting arc 307. The function of the guide hole 307 is to provide an installation channel for the guide column 102. The protective groove 302 is arranged between the accommodating cavity 301 and the light-transmitting hole 303. Its function is to protect the welding line 205 in the driving component 2 from damage.

[0033] Embodiment, the structure of the driving component 2 includes an electromagnetic coil 201, a skeleton 202, a steering magnet 203, and a swinging member 204. The skeleton 202 is fixedly installed in the accommodating cavity 301. The function of the skeleton 202 is to support the installation of the electromagnetic coil 201 and the swinging member 204. The electromagnetic coil 201 is wound on the skeleton 202. Its function is to form an electromagnetic field after being energized, and interact with the steering magnet 203 to cause the magnet 203 to rotate. The swinging member 204 is rotatably installed inside the skeleton 202. The swinging member 204 is used to support the installation of the steering magnet 203, so that the driving motion component 4 rotates. The swinging member 204 also includes a structural swing arm 2041, a swing shaft 2042, a rotating head 2043 and a slot 2043. The swing shaft 20 42 is arranged on the front and rear surfaces of the upper end of the swing member 204, and the function of the swing shaft 2042 is to enable the upper end of the swing member 204 to be rotatably installed inside the skeleton 202. Two through holes are correspondingly arranged inside the skeleton 202. The swing arm 2041 extends downward from the upper end of the swing member 204, and is used to extend the swing range of the swing member 204. The rotating head 2043 is arranged behind the lower end of the swing arm 2041. The function of the rotating head 2043 is to flexibly connect the swing member 204 with the moving component 4. The slot 2044 is arranged at the upper end of the swing member 204. The slot 2044 is used to fix the steering magnet 203. The steering magnet 203 is fixedly installed inside the upper end of the swing member 204, and its function is to drive the swing member 204 to do pendulum motion under the influence of the magnetic field of the electromagnetic coil 201.

[0034] In the embodiment, the structure of the motion component 4 includes a rotating bracket 401, a filter hole 402, a filter 403, a slide rail 404, a grip 405, a rotating cavity 406 and a positioning hole 407. The rotating bracket 401 is used to support the installation of all parts on the motion component 4. The positioning hole 407 is arranged at the center of the rotating bracket 401. The function of the positioning hole 407 is to provide a mounting channel for the support shaft 305. The filter hole 402 is arranged above the positioning hole 407. The function of the filter hole 402 is to allow light to enter. A channel is provided, the filter 403 is bonded in front of the filter hole 402, the filter 403 is used to allow light of different colors to pass through, the slide rail 404 is arranged between the two filter holes 402, the function of the slide rail 404 is to provide an installation basis for the sliding installation of the rotating head 2043, and the slide rail 404 moves in the track 404, thereby driving the rotating bracket 401 to rotate, the rotating cavity 406 is arranged below the positioning hole 407, and is a through hole structure, and its function is to limit the movement trajectory of the rotating bracket 401 by cooperating with the limit column 304.

[0035] In the embodiment, the electromagnetic coil 201 is wound by enameled wire, and welding wires 205 are extended outward on both sides thereof, and their function is to provide power for the electromagnetic coil 201. The other end of the welding wire 205 is welded together with one end of a welding head 309, and the external power supply is transmitted to the electromagnetic coil through the welding wire 205 and the welding head 309. The other end of the welding head 309 is electrically connected to the external power supply. A structural mounting groove 308 is provided at the rear of the back cover 3, and is arranged directly behind the light-transmitting hole 303. The mounting groove 308 is used to accommodate a CMOS photosensitive chip.

[0036] In summary, the electromagnetic coil 201 forms a magnetic field after being energized, and the steering magnet 203 arranged therein starts to rotate under the influence of the magnetic field. Because the steering magnet 203 is fixedly installed in the swinging member 204, the steering magnet 203 will drive the swinging member 204 to swing together. Since the rotating head 2043 at the lower end of the swinging member 204 slides up and down in the slide rail 404 on the rotating bracket 401, the rotating bracket 401 is driven to rotate, and the rotating bracket 401 is affected by the cooperation of the rotating cavity 406 below and the limiting column 304, and the rotating bracket 401 performs a pendulum motion around the support shaft 305, and cooperates with the filter hole 402 and the filter 403 on the rotating bracket 401 to achieve the purpose of switching the filters 403 of different colors.

[0037] Regarding the description of directions in the specification: the front is the direction of the lens hole 101, the rear is the direction of the mounting slot 308, the top is the direction of the electromagnetic coil 201, and the bottom is the direction of the limit arc 307.

[0038] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as the protection scope of the present invention.

Claims

1. A stable filter conversion device, comprising a front cover (1), a rear cover (3) and a driving assembly (2), wherein the driving assembly (2) is arranged between the front cover (1) and the rear cover (3) and is used to drive a motion assembly (4) to perform a rotational motion, and the rear cover (3) is provided with a light-transmitting hole (303), characterized in that: The motion component (4) is provided with two filters (403) with different spectra. The motion component (4) can rotate in the horizontal direction so that the filters (403) with different spectra are directly opposite to the light transmission hole (303) and are used to filter light of different colors passing through the light transmission hole (303). Limiting devices are correspondingly provided on the motion component (4) and the back cover (3) and are used to limit the motion component (4) to prevent deviation when the motion component (4) moves at high speed.

2. The stable filter conversion device according to claim 1, characterized in that: The limiting device comprises a rotation cavity (406) provided on the motion component (4) and a limiting column (304) provided on the rear cover (3); the limiting column (304) passes through the rotation cavity (406) and is used to limit the rotation range of the motion component (4).

3. The stable filter conversion device according to claim 2, characterized in that: The driving component (2) comprises an electromagnetic coil (201), a frame (202), a steering magnet (203) and a swinging member (204); the electromagnetic coil (201) is wound around the periphery of the frame (202) and is used to generate a magnetic field when energized; the swinging member is inserted into a hollow structure in the frame (202); the steering magnet (203) is arranged in the swinging member (204); and wires are connected at both ends of the electromagnetic coil (201) to form welding wires (205).

4. The stable filter conversion device according to claim 3, characterized in that: The swing member (204) is a long strip structure, with a slot (2044) provided at one end for accommodating the steering magnet (203), a swing shaft (2042) provided on the upper and lower surfaces of the slot (2044), and a corresponding through hole provided on the frame (202) for matching with the swing shaft (2042) so that the swing member (204) rotates with the swing shaft (2042) as the axis.

5. The stable filter conversion device according to claim 4, characterized in that: The other end of the swing member (204) forms a swing arm (2041), and a protruding rotating head (2043) is provided at the top end of the swing arm (2041) on a side facing the rear cover (3).

6. The stable filter conversion device according to claim 2, characterized in that: The motion component (4) comprises two filters (403) and a rotating bracket (401). The rotating bracket (401) is provided with two filter holes (402). The filters (403) are fixedly mounted on the filter holes (402) to absorb light. The rotating cavity (406) is arranged at the lower end of the filter hole (402).

7. The stable filter conversion device according to claim 6, characterized in that: A positioning hole (407) and a vertical slide rail (404) are provided between the two filter holes (402) of the rotating bracket (401); the positioning hole (407) is used to position the rotating bracket (401); and the slide rail (404) generates a force after receiving a force, so that the rotating bracket (401) rotates.

8. The stable filter conversion device according to claim 3, characterized in that: The ends of the front cover (1) and the rear cover (3) are provided with recessed accommodating cavities (301) for accommodating the drive assembly (2); protection grooves are provided on the left and right sides of the rear cover (3) close to the accommodating cavity (301) for protecting the welding line (205); a light-transmitting hole (303) is provided in the middle of the rear cover (3) for the passage of light; and a limiting column (304) is provided at the front end of the inner side of the lower cover.

9. The stable filter conversion device according to claim 8, characterized in that: A limiting arc (307) is also provided below the limiting column (304), and metal welding heads (309) are also provided on both sides of the rear cover (3) for electrically connecting to the welding wire (205).

10. The stable filter conversion device according to claim 8, characterized in that: The front cover (1) is provided with a lens hole (101), and the lens hole (101) and the light-transmitting hole (303) are arranged concentrically for light to pass through. A receiving cavity (301) is also provided at the upper end of the front cover (1).

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