Optical filter switcher

Abstract

The utility model provides an optical filter switcher, and relates to the field of camera shooting, the optical filter switcher comprises a shell, one side end of the shell is provided with a driving chamber, and one side, opposite to the driving chamber, of the shell is provided with an optical filtering chamber; the driving chamber is communicated with the filtering chamber through a transmission hole formed in the shell; the driving assembly is mounted in the driving cavity; the light filtering assembly is mounted in the light filtering cavity; the transmission assembly is arranged in the transmission hole in a penetrating mode, one end of the transmission assembly is connected with the driving assembly, and the other end of the transmission assembly is connected with the light filtering assembly. According to the application, slag or dust generated by the driving assembly can be isolated in the driving cavity and is isolated from the light filtering assembly, so that the light filtering assembly is prevented from being polluted, and the imaging quality is improved; it can be avoided that a large amount of time is consumed to clean the driving assembly, and assembling efficiency is improved; the cleanliness problem of the optical filter switcher is solved, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of photography, in particular to a filter switcher. Background Art

[0002] Optical filter switches play a crucial role in modern imaging technology, allowing different types and wavelengths of light to pass through, thereby adapting to varying imaging needs. In particular, in security cameras that require continuous day and night monitoring, optical filter switches switch between infrared-cut filters and full-spectrum filters, enabling both true-color daytime images and enhanced infrared imaging at night.

[0003] However, the implementation of this technology is not without challenges, especially in terms of dust spot issues, assembly procedures, and application imaging. Existing filter switcher coil assemblies and filters are integrated into one space to enable the coil assembly to drive the filter switching.

[0004] However, according to existing production technology, the coil assembly and its components cannot be completely cleaned. In order to avoid affecting the imaging of the filter, a lot of time is required to clean them during assembly. In addition, the welding wires of the coil assembly contain residual substances such as tin slag and solder paste. During operation, they may be affected by factors such as vibration or temperature, causing slag to fall onto the filter and cause contamination of the filter, affecting the cleanliness and resulting in blurred and poor imaging. Utility Model Content

[0005] In view of the above problems, the present invention is proposed to provide a filter switch that overcomes the above problems or at least partially solves the above problems.

[0006] In order to solve the above problems, the utility model discloses a filter switcher, comprising:

[0007] A housing, wherein a driving chamber is formed at one end of the housing, and a filter chamber is formed at a side of the housing opposite to the driving chamber; the driving chamber is connected to the filter chamber via a transmission hole formed in the housing;

[0008] a drive assembly, the drive assembly being installed in the drive chamber;

[0009] A filter assembly, the filter assembly being installed in the filter chamber;

[0010] A transmission component is provided in the transmission hole, one end of the transmission component is connected to the driving component, and the other end of the transmission component is connected to the filter component.

[0011] Furthermore, the driving assembly includes a U-shaped iron block, a wire rack and a coil, the U-shaped iron block is installed in the driving chamber, the wire rack is fixed to one side of the U-shaped iron block, and the coil is installed on the wire rack.

[0012] Furthermore, the driving chamber is provided with a first contour limiter, which is arranged on both sides of the transmission hole. The shape of the first contour limiter is adapted to the shape of the open end of the U-shaped iron block so that the open end of the U-shaped iron block is limited to the first contour limiter.

[0013] Furthermore, the driving chamber is further provided with a positioning plate, the positioning plate is opposite to the transmission hole, and a positioning shaft is fixedly connected to the side of the positioning plate facing the filter chamber, and the positioning shaft passes through the transmission hole.

[0014] Furthermore, the transmission assembly is a magnet rocker arm switching assembly, including: a rocker arm, a connecting tube and a magnet, the rocker arm is installed in the filter chamber, the connecting tube is connected to the side of the rocker arm facing the drive chamber and is passed through the positioning shaft, the magnet is fixedly sleeved on the outside of the connecting tube and is passed through the transmission hole; one end of the opening of the U-shaped iron block is arc-shaped and sleeved on the outside of the magnet; the other end of the rocker arm is movably connected to the filter assembly.

[0015] Furthermore, a rocker slot is provided at one end of the filter chamber opposite to the drive chamber. The rocker slot is fan-shaped and takes the transmission hole as the center. The rocker is located in the rocker slot.

[0016] Furthermore, the filter assembly includes a movable plate, a first filter and a second filter, the movable plate slidingly covering the filter chamber and having a gap with the side wall of the filter chamber; the movable plate is provided with two parallel filter holes, and the first filter and the second filter are respectively installed in the two filter holes; a connecting hole is provided at one end of the movable plate, and a connecting block is provided at the end of the rocker arm, and the connecting block is passed through the connecting hole and is used to drive the movable plate to move.

[0017] Furthermore, the filter chamber is sealed by a filter cover plate, and the opposite sides of the filter cover plate are snap-fitted to the opposite outer walls of the housing; the filter cover plate and the housing are provided with light-transmitting holes corresponding to the first filter or the second filter.

[0018] Furthermore, the driving chamber is sealed by a driving cover plate, and the driving cover plate is buckled inside the inner wall of the driving chamber.

[0019] Furthermore, a second contour-profiling limiter is provided on a side of the driving cover plate facing the driving assembly, and the second contour-profiling limiter is opposite to the open end of the U-shaped iron block and is adapted to its shape.

[0020] In an embodiment of the present application, a housing is provided with a drive chamber at one end of the housing, and a filter chamber is provided on a side of the housing opposite to the drive chamber; the drive chamber is connected to the filter chamber via a transmission hole provided in the housing; a drive assembly is installed in the drive chamber; a filter assembly is installed in the filter chamber; a transmission assembly is passed through the transmission hole, and one end of the transmission assembly is connected to the drive assembly, and the other end of the transmission assembly is connected to the filter assembly. By configuring the housing as a dual chamber, which is arranged opposite to each other, the drive assembly is installed in the drive chamber, the filter assembly is installed in the filter chamber, and a transmission hole is provided in the housing, the filter assembly is driven by the transmission assembly to move to achieve the switching of the filter. This application can isolate the residue or dust generated by the driving component in the driving chamber and isolate it from the filter component, thereby avoiding contamination of the filter component and improving imaging quality; it can avoid spending a lot of time cleaning the driving component and improve assembly efficiency; it solves the cleanliness problem of the filter switch, improves production efficiency and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the exploded structure of the filter switch provided in an embodiment of the present application;

[0023] Figure 2 A schematic top view of the drive chamber provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of a top view of the filter chamber provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of the drive assembly and transmission assembly provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1-housing, 11-driving chamber, 111-first contour-profiling limiter, 112-positioning plate, 113-positioning shaft, 12-filtering chamber, 121-rocker slot, 21-U-shaped iron block, 22-wire rack, 23-coil, 31-rocker arm, 32-connecting cylinder, 33-magnet, 41-moving plate, 42-first filter, 43-second filter, 5-filter cover, 6-driving cover, 61-second contour-profiling limiter. DETAILED DESCRIPTION

[0028] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0029] Reference Figures 1-4 , shows a schematic structural diagram of a filter switch, which may specifically include:

[0030] A housing 1 is provided with a drive chamber 11 at one end of the housing 1, and a filter chamber 12 is provided on a side of the housing 1 opposite to the drive chamber 11; the drive chamber 11 is connected to the filter chamber 12 via a transmission hole provided in the housing 1;

[0031] A driving assembly, the driving assembly being installed in the driving chamber 11;

[0032] A filter assembly, the filter assembly being installed in the filter chamber 12;

[0033] A transmission component is provided in the transmission hole, one end of the transmission component is connected to the driving component, and the other end of the transmission component is connected to the filter component.

[0034] In the embodiment of the present application, a housing 1 is provided with a drive chamber 11 at one end of the housing 1, and a filter chamber 12 is provided on the side of the housing 1 opposite to the drive chamber 11; the drive chamber 11 is connected to the filter chamber 12 via a transmission hole provided in the housing 1; a drive assembly is installed in the drive chamber 11; a filter assembly is installed in the filter chamber 12; a transmission assembly is passed through the transmission hole, and one end of the transmission assembly is connected to the drive assembly, and the other end of the transmission assembly is connected to the filter assembly. By setting the housing 1 as a dual chamber and arranging them opposite to each other, the drive assembly is installed in the drive chamber 11, the filter assembly is installed in the filter chamber, and a transmission hole is provided in the housing 1, and the filter assembly is driven by the transmission assembly to move to achieve the switching of the filter. The present application can isolate the residue or dust generated by the driving component in the driving chamber 11 and isolate it from the filter component, thereby avoiding contamination of the filter component and improving imaging quality; it can avoid spending a lot of time cleaning the driving component and improve assembly efficiency; it solves the cleanliness problem of the filter switch, improves production efficiency and reduces production costs.

[0035] Next, a filter switch in this exemplary embodiment will be further described.

[0036] In one embodiment of the present application, a driving chamber 11 is provided at one end of the housing 1, and the driving assembly is installed in the driving chamber 11. A filter chamber 12 is provided at the side of the housing 1 opposite to the driving chamber 11, and the filter assembly is installed in the filter chamber 12; Figures 1 to 3 As shown, the combination of the above-mentioned driving chamber 11 and the filtering chamber 12 makes the outer shape of the housing 1 present an L-shaped structure; the filtering assembly is located at the bottom of the horizontal side, and the driving assembly is located at the top end of the horizontal side, so that the driving assembly can drive the filter to move horizontally; the driving chamber 11 is connected to the filtering chamber 12 through a transmission hole opened in the housing 1, and the transmission assembly is arranged in the transmission hole, and one end of the transmission assembly is connected to the driving assembly, and the other end of the transmission assembly is connected to the filtering assembly, so that the driving assembly and the filtering assembly facing each other can be connected by transmission.

[0037] As an example, the driving component includes a U-shaped iron block 21, a wire rack 22 and a coil 23. The U-shaped iron block 21 is installed in the driving chamber 11, the wire rack 22 is fixed to one side of the U-shaped iron block 21, and the coil 23 is installed on the wire rack 22. The above structure forms a coil 23 component. The coil 23 is energized to generate an electric field, forming a magnetic field with the U-shaped iron block 21. The two ends of the U-shaped opening are the N pole and the S pole respectively. The N pole and the S pole can be converted by changing the direction of the current in the coil 23 to realize the driving of the filter component.

[0038] The drive chamber 11 is provided with first contour-shaped stoppers 111, which are disposed on both sides of the transmission hole. The shape of the first contour-shaped stoppers 111 matches the shape of the open end of the U-shaped iron block 21, so that the open end of the U-shaped iron block 21 is limited to the first contour-shaped stoppers 111. Specifically, the open end of the U-shaped iron block 21 is arc-shaped, and the first contour-shaped stoppers are also composed of two semicircular structures forming arc-shaped stoppers that match the open end, which are used to limit and fix the position of the U-shaped iron block 21.

[0039] As an example, the driving chamber 11 is also provided with a positioning plate 112, and the positioning plate 112 is opposite to the transmission hole. The positioning plate 112 is fixed to the inner wall of the shell 1, and the positioning plate 112 is fixedly connected to the side of the filter chamber 12 with a positioning shaft 113. The positioning shaft 113 is passed through the transmission hole, and the positioning shaft 113 is used to quickly position and install the transmission component.

[0040] As an example, the transmission assembly is a magnet 33 rocker arm 31 switching assembly, which can achieve directional switching movement under the influence of a magnetic field. Specifically, it includes: a rocker arm 31, a connecting tube 32, and a magnet 33. The rocker arm 31 is installed in the filter chamber 12. The connecting tube 32 is connected to the side of the rocker arm 31 facing the drive chamber 11 and is inserted into the positioning shaft 113. The magnet 33 is fixedly sleeved on the outside of the connecting tube 32 and inserted into the transmission hole. The open end of the U-shaped iron block 21 is arc-shaped and sleeved on the outside of the magnet 33. The other end of the rocker arm 31 is movably connected to the filter assembly. Under the influence of the magnetic field of the drive assembly, the magnet 33 will rotate, and the magnet 33 will drive the connecting tube 32 to rotate, thereby driving the rocker arm 31 to rotate, and then driving the filter assembly to move through the rocker arm 31 to achieve filter switching.

[0041] As an example, a rocker slot 121 is defined at one end of the filter chamber 12 opposite the drive chamber 11. The rocker slot 121 is fan-shaped and centered around the transmission hole, with the rocker arm 31 positioned within the slot. The transmission assembly rotates along the fan-shaped arc within the slot 121, thereby driving the filter assembly to reciprocate within the filter chamber 12. The fan-shaped slot 121 reduces the contact area of the rocker arm 31, providing a protective limit.

[0042] As an example, the filter assembly includes a movable plate 41, a first filter 42, and a second filter 43. The movable plate 41 slides over the filter chamber 12, with a gap between it and the sidewalls of the filter chamber 12. It does not contact the sidewalls of the chamber, is in an airtight state, and is free from restriction. The movable surface covers the entire cavity, so that the movable plate 41 does not hang in the air during operation, ensuring that the glass movable plate 41 does not warp. The movable plate 41 has two parallel filter holes, and the first filter 42 and the second filter 43 are respectively installed in the two filter holes. One end of the movable plate 41 has a connecting hole, and the end of the rocker arm 31 is provided with a connecting block. The connecting block is inserted into the connecting hole and is used to drive the movable plate 41 to move. The rotation of the rocker arm 31 drives the movable plate 41 back and forth, achieving back and forth switching between the first filter 42 and the second filter 43.

[0043] Furthermore, one of the first filter 42 and the second filter 43 is configured as an infrared filter, and the other is configured as a full-spectrum filter; for example, the first filter 42 can be configured as an infrared filter, and the second filter can be configured as a full-spectrum filter, which plays an important role when used in a black and white / color conversion camera.

[0044] It's important to note that an infrared filter, also known as an IR-cut filter, primarily allows visible light to pass through during the day while blocking infrared light, ensuring the camera captures a normal color image. At night or in low-light conditions, this filter is switched or removed to allow infrared light to enter the camera, enabling night vision surveillance with infrared light sources (such as infrared LEDs). IR-cut filters are widely used in infrared cameras with day / night switching capabilities, improving the camera's adaptability and image quality in varying lighting conditions.

[0045] When light levels are low at night, the infrared cutoff filter automatically moves away, and the full-spectrum filter, also known as the full-spectrum optical glass, begins operating, allowing the CMOS to fully utilize all light. This prevents stray light from interfering with infrared light at night, significantly improving low-light performance and making night vision clearer, enabling optimal imaging both day and night. This filter can also be a UV filter, which can be set according to different application requirements.

[0046] As an example, the filter chamber 12 is sealed by a filter cover 5, and the opposite sides of the filter cover 5 are snap-fitted with the opposite outer walls of the shell 1 for easy disassembly and assembly, and the filter cover 5 is covered on the filter chamber 12 to prevent dust from entering the filter chamber 12 and prevent the filter from getting dirty; the filter cover 5 and the shell 1 are provided with light-transmitting holes corresponding to the first filter 42 or the second filter 43, and the light-transmitting holes are adapted to the filters, and the filters are switched back and forth to achieve switching filtering.

[0047] Furthermore, the filter cover 5 can be made of metal or plastic.

[0048] As an example, the drive chamber 11 is sealed by a drive cover 6, and the drive cover 6 is buckled into the inner wall of the drive chamber 11. The drive cover 6 is provided with a second contour-shaped stopper 61 on the side facing the drive assembly. The second contour-shaped stopper 61 is opposite to the open end of the U-shaped iron block 21 and is adapted to its shape. That is, the second contour-shaped stopper 61 is also composed of two arc-shaped semicircles, opposite to the U-shaped iron block 21. When the drive cover 6 is buckled, the second contour-shaped stopper 61 fits the U-shaped iron block 21, can fix the U-shaped iron block 21, block the gap between the wire frame 22 and the magnet 33 rocker arm 31, reduce the possibility of dust points entering the filter chamber 12, and improve the dust and pollution prevention effect.

[0049] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0050] The above is a detailed introduction to the filter switcher provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for general technical personnel in this field, based on the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A filter switch, characterized in that: include: A housing, wherein a driving chamber is formed at one end of the housing, and a filter chamber is formed at a side of the housing opposite to the driving chamber; the driving chamber is connected to the filter chamber via a transmission hole formed in the housing; a drive assembly, the drive assembly being installed in the drive chamber; A filter assembly, the filter assembly being installed in the filter chamber; A transmission component is provided in the transmission hole, one end of the transmission component is connected to the driving component, and the other end of the transmission component is connected to the filter component.

2. The filter switcher according to claim 1, characterized in that: The driving assembly includes a U-shaped iron block, a wire rack and a coil. The U-shaped iron block is installed in the driving chamber. The wire rack is fixed to one side of the U-shaped iron block. The coil is installed on the wire rack.

3. The filter switcher according to claim 2, characterized in that: The driving chamber is provided with a first contour-like limiter, which is arranged on both sides of the transmission hole. The shape of the first contour-like limiter is adapted to the shape of the open end of the U-shaped iron block so that the open end of the U-shaped iron block is limited to the first contour-like limiter.

4. The filter switcher according to claim 2 or 3, characterized in that: The driving chamber is further provided with a positioning plate, which is opposite to the transmission hole. A positioning shaft is fixedly connected to the side of the positioning plate facing the filter chamber, and the positioning shaft passes through the transmission hole.

5. The filter switcher according to claim 4, characterized in that: The transmission assembly is a magnet rocker arm switching assembly, including: a rocker arm, a connecting tube and a magnet. The rocker arm is installed in the filter chamber, the connecting tube is connected to the side of the rocker arm facing the drive chamber and is passed through the positioning shaft, the magnet is fixedly sleeved on the outside of the connecting tube and is passed through the transmission hole; one end of the opening of the U-shaped iron block is arc-shaped and sleeved on the outside of the magnet; the other end of the rocker arm is movably connected to the filter assembly.

6. The filter switcher according to claim 5, characterized in that: A rocker slot is provided at one end of the filter chamber opposite to the drive chamber. The rocker slot is fan-shaped and takes the transmission hole as the center. The rocker is located in the rocker slot.

7. The filter switcher according to claim 5, characterized in that: The filter assembly includes a movable plate, a first filter and a second filter. The movable plate slides over the filter chamber and has a gap with the side wall of the filter chamber. The movable plate is provided with two parallel filter holes, and the first filter and the second filter are respectively installed in the two filter holes. A connecting hole is provided at one end of the movable plate, and a connecting block is provided at the end of the rocker arm. The connecting block is passed through the connecting hole and is used to drive the movable plate to move.

8. The filter switcher according to claim 7, characterized in that: The filter chamber is sealed by a filter cover plate, and the opposite sides of the filter cover plate are snap-fitted to the opposite outer walls of the housing; the filter cover plate and the housing are provided with light-transmitting holes corresponding to the first filter or the second filter.

9. The filter switcher according to claim 2, characterized in that: The driving chamber is sealed by a driving cover plate, and the driving cover plate is buckled inwardly on the inner wall of the driving chamber.

10. The filter switcher according to claim 9, characterized in that: A second contour-matching limiter is provided on a side of the driving cover plate facing the driving assembly. The second contour-matching limiter is opposite to the open end of the U-shaped iron block and is adapted to its shape.

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