IR-CUT switcher with dustproof function
By installing a dustproof medium at the bottom of the IR-CUT switcher base, the problem of dust contamination is solved, ensuring imaging quality and achieving convenient dustproof functionality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-16
- Publication Date
- 2026-04-07
AI Technical Summary
Existing IR-CUT switchers are susceptible to dust contamination during packaging, transportation, and use, which affects imaging performance.
A dustproof medium, such as a dustproof glass plate, plastic sheet, or silicon wafer, is installed at the bottom of the IR-CUT switch base to form a protective wall and prevent dust from entering the lens module.
It effectively prevents dust from entering the lens module, ensuring image quality, and the dustproof medium is easy to replace and maintain.
Smart Images
Figure CN121806356A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of IR-CUT switch technology, and in particular to an IR-CUT switch with dustproof function. Background Technology
[0002] IR-CUT dual filters refer to a set of filters built into the camera lens assembly. When the infrared sensor outside the lens detects changes in light intensity, the built-in IR-CUT automatic switching filter can automatically switch according to the intensity of external light to achieve the best image effect. In other words, the dual filters can automatically switch filters in daylight or darkness, so the best imaging effect can be obtained regardless of whether it is day or night.
[0003] Most of the IR-CUT designs currently on the market are used for security monitoring and do not take dust prevention into consideration. During packaging and transportation, dust and other dirt cannot be prevented from entering the module. Furthermore, during use, external dust can easily adhere to and fall onto the photosensitive chip, thus affecting the imaging effect, which has certain defects. Summary of the Invention
[0004] The purpose of this invention is to provide an IR-CUT switch with dustproof function to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: An IR-CUT switch with dustproof function includes a base, a filter component, a power component for driving the filter component to move, and a dustproof medium. The power component and the filter component are connected by a drive mechanism, and a moving part housing is externally connected to the power component and the filter component. A receiving cavity is opened inside one side of the base, and a moving part mounting platform is provided on the other side. The power component is mounted on the moving part mounting platform. One side of the filter component and the moving part housing is located in the receiving cavity, and the other side of the moving part housing is engaged with the moving part mounting platform. A first light-transmitting hole is opened at the top of the base, and a second light-transmitting hole is opened at the bottom of the base opposite to the first light-transmitting hole. A third light-transmitting hole is opened on the moving part housing located inside the receiving cavity. The first light-transmitting hole, the second light-transmitting hole, and the third light-transmitting hole are all in communication with the receiving cavity. A mounting ring groove is opened at the second light-transmitting hole, and a dustproof medium is connected to the mounting ring groove.
[0006] Preferably, the filter component includes a switching carrier, which has two vertically penetrating light-transmitting holes and is fitted with an AR filter and an IR filter from left to right. One end of the switching carrier has a vertically penetrating, elongated strip-shaped through hole.
[0007] Preferably, the power component includes two side supports, a U-shaped iron core, a coil winding, a movable magnet, and a drive crank. A winding shaft is connected between the two side supports. The U-shaped magnet is mounted on the two side supports, and the winding shaft is fitted onto one side of the U-shaped magnet. The coil winding is wrapped around the outer periphery of the winding shaft. The movable magnet is rotatably mounted between the two magnetic poles of the U-shaped iron core. The drive crank is connected to the bottom of the movable magnet and rotates synchronously with the movable magnet. The drive crank is connected to the switching carrier.
[0008] Preferably, the bottom of the moving part housing is provided with guide grooves on both sides, the switching plate is slidably disposed in the guide grooves, the core of the movable magnet is provided with a magnet mounting hole, and the fixed end of the drive crank is embedded and fastened in the magnet mounting hole of the movable magnet.
[0009] Preferably, the fixed end of the drive rocker is provided with a vertical through rocker shaft hole, the bottom of the moving part housing is provided with a positioning shaft corresponding to the drive rocker, the drive rocker is rotatably fitted around the corresponding positioning shaft through the rocker shaft hole, and the end of the drive rocker is provided with a protrusion, which is inserted into the elongated through hole of the switching carrier.
[0010] Preferably, the cavity has protruding edges on both sides, the bottom of the switching carrier is slidably disposed on the protruding edges on both sides, and the base has mounting parts on both sides for fixing the base.
[0011] Preferably, the dustproof medium is a dustproof glass plate or plastic sheet, silicon wafer, or germanium wafer.
[0012] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a dustproof medium installed at the light-transmitting hole at the bottom of the base. This dustproof medium can be a dustproof glass plate, but can also be made of materials such as plexiglass, plastic sheets, silicon wafers, or germanium wafers. This forms a protective barrier for the photosensitive chip, preventing dust and other contaminants from entering the lens module during packaging, transportation, and operation, thus achieving a dustproof effect. The invention is simple and convenient to manufacture, and the dustproof medium is easy to replace, facilitating replacement and maintenance. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the top structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is an exploded view of the structure of the present invention; Figure 5 This is a schematic diagram of the base structure of the present invention. Figure 1 ; Figure 6This is a schematic diagram of the base structure of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the power component structure of the present invention; Figure 8 Structural breakdown of the power component of the present invention Figure 1 ; Figure 9 This is a schematic diagram of the power component structure of the present invention. Figure 2 .
[0014] Figure Labels 1. Base, 2. First light-transmitting hole, 3. Receiving cavity, 4. Protruding edge, 5. Moving part mounting platform, 6. Second light-transmitting hole, 7. Mounting ring groove, 8. Mounting part, 9. Dustproof medium, 10. Moving part housing, 11. Third light-transmitting hole, 12. Guide groove, 13. Positioning shaft, 14. Switching carrier, 15. AR filter, 16. IR filter, 17. Strip-shaped through hole, 18. Bracket, 19. U-shaped iron core, 20. Coil winding, 21. Movable magnet, 22. Drive handle, 23. Magnet mounting hole, 24. Handle shaft hole, 25. Protruding post, 26. Winding shaft. Detailed Implementation
[0015] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.
[0016] like Figure 1-9 As shown, an IR-CUT switch with dustproof function includes a base 1, a filter component, a power component for driving the filter component to move, and a dustproof medium 9. The power component and the filter component are connected by a drive mechanism. A moving part housing 10 is externally connected to the power component and the filter component. A receiving cavity 3 is opened inside one side of the base 1, and a moving part mounting platform 5 is provided on the other side. The power component is mounted on the moving part mounting platform 5. One side of the filter component and the moving part housing 10 is located in the receiving cavity 3, and the other side of the moving part housing 10 is engaged with the moving part mounting platform 5. A [missing information - likely a design feature] is opened on the top of the base 1. A first light-transmitting hole 2 is provided. A second light-transmitting hole 6 is provided at the bottom of the base 1 relative to the first light-transmitting hole 2. A third light-transmitting hole 11 is provided on the moving part housing 10 located inside the accommodating cavity 3. The first light-transmitting hole 2, the second light-transmitting hole 6 and the third light-transmitting hole 11 are all connected to the accommodating cavity 3. An installation ring groove 7 is provided at the second light-transmitting hole 6. A dustproof medium 9 can be connected to the installation ring groove 7 by adhesive. The dustproof medium 9 is a dustproof glass plate, or it can be made of materials such as plexiglass, plastic sheet, silicon wafer, germanium wafer, etc. The installation ring groove 7 and the dustproof medium 9 can be square, circular or other polygonal structures.
[0017] The filter component includes a switching carrier 14, which has two vertically penetrating light-transmitting holes. An AR filter 15 and an IR filter 16 are arranged and glued from left to right. One end of the switching carrier 14 has a vertically penetrating, elongated strip-shaped through hole 17.
[0018] like Figure 8-9 As shown, the power component includes two side supports 18, a U-shaped iron core 19, a coil winding 20, a movable magnet 21, and a drive handle 22. A winding shaft 26 is connected between the two side supports 18. The U-shaped magnet is mounted on the two side supports 18, and the winding shaft 26 is fitted on one side of the U-shaped magnet. The coil winding 20 is wrapped around the outside of the winding shaft 26. The movable magnet 21 is rotatably mounted between the two magnetic poles of the U-shaped iron core 19. The drive handle 22 is connected to the bottom of the movable magnet 21 and rotates synchronously with the movable magnet 21. The drive handle 22 is connected to the switching carrier 14.
[0019] The bottom of the moving part housing 10 is provided with guide grooves 12 on both sides. The switching plate 14 is slidably disposed in the guide grooves 12. The core of the movable magnet 21 is provided with a magnet mounting hole 23. The fixed end of the drive handle 22 is embedded and fastened in the magnet mounting hole 23 of the movable magnet 21.
[0020] The fixed end of the drive handle 22 is provided with a vertical through handle shaft hole 24. The bottom of the moving part housing 10 is provided with a positioning shaft 13 corresponding to the drive handle 22. The drive handle 22 is rotated and fitted around the corresponding positioning shaft 13 through the handle shaft hole 24. The end of the drive handle 22 is provided with a protrusion 25. The protrusion 25 of the drive handle 22 is inserted into the elongated through hole of the switching plate 14.
[0021] The cavity 3 has protruding edges 4 on both sides. The bottom of the switching plate 14 is slidably mounted on the protruding edges 4 on both sides. The base 1 has mounting parts 8 on both sides for fixing the base 1.
[0022] During the switching process, the coil winding 20 is energized and magnetizes the U-shaped iron core 19. The two magnetic poles of the magnetized U-shaped iron core 19 act as magnetic poles. The magnetic force of the two magnetic poles of the U-shaped iron core 19 acts on the movable magnet 21, causing the magnet to rotate. That is, the U-shaped iron core 19, the winding shaft 26, the coil winding 20, and the movable magnet 21 together form a solenoid valve engine structure. The rotating movable magnet 21 drives the drive crank 22 to rotate, and the rotating drive crank 22 drives the crank to rotate. The movable part pulls the driving part of the switching carrier 14, thereby causing the switching carrier 14 to move back and forth within the accommodating cavity 3; wherein, when the switching carrier 14 moves forward, the IR filter 16 is directly facing the first light-transmitting hole 2, the second light-transmitting hole 6 and the third light-transmitting hole 11, and the IR filter 16 performs filtering at this time; when the movable switching carrier moves backward, the AR filter 15 is directly facing the first light-transmitting hole 2, the second light-transmitting hole 6 and the third light-transmitting hole 11, and the AR filter 15 performs filtering at this time.
[0023] This invention utilizes a dustproof medium installed at the light-transmitting hole at the bottom of the base. This dustproof medium can be a dustproof glass plate, but can also be made of materials such as plexiglass, plastic sheets, silicon wafers, or germanium wafers. This forms a protective barrier for the photosensitive chip, preventing dust and other contaminants from entering the lens module during packaging, transportation, and operation, thus achieving a dustproof effect. The invention is simple and convenient to manufacture, and the dustproof medium is easy to replace, facilitating replacement and maintenance.
[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. An IR-CUT switch with dustproof function, characterized in that: The device includes a base, a filter component, a power component for driving the filter component to move, and a dustproof medium. The power component and the filter component are connected by a drive mechanism. A moving part housing is externally connected to the power component and the filter component. A receiving cavity is opened inside one side of the base, and a moving part mounting platform is provided on the other side. The power component is mounted on the moving part mounting platform. One side of the filter component and the moving part housing is located inside the receiving cavity, and the other side of the moving part housing is engaged with the moving part mounting platform. A first light-transmitting hole is opened at the top of the base, and a second light-transmitting hole is opened at the bottom of the base opposite to the first light-transmitting hole. A third light-transmitting hole is opened on the moving part housing located inside the receiving cavity. The first, second, and third light-transmitting holes are all connected to the receiving cavity. A mounting ring groove is opened at the second light-transmitting hole, and a dustproof medium is connected to the mounting ring groove.
2. The IR-CUT switch with dustproof function according to claim 1, characterized in that: The filter component includes a switching carrier, which has two vertically penetrating light-transmitting holes and AR filters and IR filters are glued on it from left to right. One end of the switching carrier has a vertically penetrating, elongated strip-shaped through hole.
3. An IR-CUT switch with dustproof function according to claim 2, characterized in that: The power component includes two side supports, a U-shaped iron core, a coil winding, a movable magnet, and a drive crank. A winding shaft is connected between the two side supports. The U-shaped magnet is mounted on the two side supports, and the winding shaft is fitted onto one side of the U-shaped magnet. The coil winding is wrapped around the winding shaft. The movable magnet is rotatably mounted between the two magnetic poles of the U-shaped iron core. The drive crank is connected to the bottom of the movable magnet and rotates synchronously with the movable magnet. The drive crank is connected to the switching plate.
4. An IR-CUT switch with dustproof function according to claim 3, characterized in that: The bottom of the moving part housing is provided with guide grooves on both sides, the switching plate is slidably disposed in the guide grooves, the core of the movable magnet is provided with a magnet mounting hole, and the fixed end of the drive crank is embedded and fastened in the magnet mounting hole of the movable magnet.
5. An IR-CUT switch with dustproof function according to claim 4, characterized in that: The fixed end of the drive rocker is provided with a vertical through rocker shaft hole. The bottom of the moving part housing is provided with a positioning shaft corresponding to the drive rocker. The drive rocker is rotated and fitted around the corresponding positioning shaft through the rocker shaft hole. The end of the drive rocker is provided with a protrusion. The protrusion of the drive rocker is inserted into the elongated through hole of the switching carrier.
6. An IR-CUT switch with dustproof function according to claim 5, characterized in that: The cavity has protruding edges on both sides, the bottom of the switching carrier is slidably mounted on the protruding edges on both sides, and the base has mounting parts on both sides for fixing the base.
7. An IR-CUT switch with dustproof function according to claim 1, characterized in that: The dustproof medium is a dustproof glass plate or plastic sheet, silicon wafer, or germanium wafer.