IR-CUT optical filter switcher, lens assembly and camera equipment

Abstract

The utility model relates to an IR-CUT optical filter switcher which comprises an upper shell and a lower shell, and further comprises a plurality of optical filter switching units and a partition plate located between the upper shell and the lower shell, the upper shell, the partition plate and the lower shell are connected, the partition plate is provided with a light through hole, and the light through hole is communicated with the light through hole. At least two of the upper shell, the lower shell and the partition plate are provided with installation positions for installing the optical filter switching units, the upper shell and the lower shell are separated through the partition plate to form two cavities, the optical filter switching units are located in the two cavities respectively, the optical filter switching units are installed in a separated mode through the partition plate, and the optical filter switching units are arranged in the two cavities respectively. According to the present invention, the interference of each component during the switching of the optical filters due to the congestion of the plurality of optical filter switching units is prevented, and the foreign matter is prevented from scraping all optical filters after entering the IR-CUT optical filter switcher.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment, and more specifically, to an IR-CUT filter switcher, a lens assembly, and a camera device. Background Technology

[0002] To ensure that the camera module can maintain a clear image output in different environments, especially when there are significant differences in light and brightness between day and night, the camera module needs to add different IR filters to adapt to different environments. To ensure that the IR filter has a good and adaptive effect, existing camera modules usually set up an IR-CUT filter switcher to realize the automatic switching of the filter in different environments.

[0003] Existing IR-CUT filter switchers use multiple filter switching units to switch between different filters, resulting in different types of filtered light sources and better image quality. However, when the multiple filter switching units are too crowded, interference can easily occur between components during filter switching. When the multiple filter switching units are set up relatively far apart, they occupy too much space, making the IR-CUT filter switcher too bulky. In addition, foreign objects entering the IR-CUT filter switcher can easily scratch all the filters. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, an IR-CUT filter switcher is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an IR-CUT filter switcher, including an upper shell and a lower shell, and further including a plurality of filter switching units and a partition located between the upper shell and the lower shell. The upper shell, the partition and the lower shell are connected. The partition is provided with a light-transmitting hole. At least two of the upper shell, the lower shell and the partition are provided with mounting positions for installing the filter switching units.

[0006] Preferably, the filter switching unit includes a movable frame, one or more filters disposed on the movable frame, and a driving mechanism connected to the movable frame.

[0007] Preferably, the drive mechanism includes a motor, and a guide rod is provided in the mounting position at a distance from the output shaft of the motor. The output shaft of the motor is provided with a threaded groove. One end of the movable frame is slidably mounted on the guide rod, and the other end of the movable frame is provided with a snap-fit ​​component that engages with the threaded groove.

[0008] Preferably, a helical spring is fixedly sleeved on the output shaft of the motor, and the two ends of the helical spring are straight.

[0009] Preferably, the movable frame includes a rectangular plate structure frame body with two mounting grooves spaced apart on the frame body. The filter is installed in the corresponding mounting groove, and the bottom of the mounting groove is provided with a groove through hole that exposes the corresponding filter.

[0010] Preferably, the partition plate has a recessed groove forming an installation position, and the partition groove is provided with a clearance notch to avoid the filter switching unit.

[0011] Preferably, the upper shell, the partition, and the lower shell are detachably connected from top to bottom.

[0012] Preferably, both the upper and lower shells are provided with multiple buckles, the partition is provided with multiple first slots that engage with the buckles on the upper shell, and the partition is also provided with multiple second slots that engage with the buckles on the lower shell.

[0013] A lens assembly comprising any one of the above-described IR-CUT filter switchers.

[0014] A camera device comprising the lens assembly described above.

[0015] The beneficial effects of this utility model are as follows: the upper shell and the lower shell are separated by a partition to form two cavities, and multiple filter switching units are located in the two cavities respectively. The partition separates the filter switching units, preventing multiple filter switching units from crowding together and interfering with each component when switching filters. At the same time, after foreign objects enter the IR-CUT filter switcher, it prevents foreign objects from scratching all the filters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall top structure of an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall bottom structure of an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the upper cavity in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the lower cavity according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the partition structure according to an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the movable frame structure according to an embodiment of the present utility model.

[0022] Reference numerals: 1 upper shell, 10 lower shell, 11 buckle, 2 movable frame, 20 frame body, 21 mounting groove, 22 groove through hole, 23 snap-fit, 3 filter, 4 partition, 40 first bayonet, 41 second bayonet, 42 light transmission hole, 43 partition groove, 44 clearance notch, 5 motor, 50 guide rod, 51 coil spring, 6 bracket. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In addition, the directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. The directional terms are used to better and more clearly explain and understand this utility model, and are not intended to indicate or imply the necessary orientation of this utility model. Therefore, they should not be construed as limitations on this utility model.

[0024] Examples of embodiments of this utility model Figures 1 to 6 As shown, an IR-CUT filter switcher includes an upper shell 1 and a lower shell 10, as well as multiple filter switching units and a partition 4 located between the upper shell 1 and the lower shell 10. The upper shell 1, the partition 4, and the lower shell 10 are connected. The partition 4 is provided with a light-transmitting hole 42. At least two of the upper shell 1, the lower shell 10, and the partition 4 are provided with mounting positions for installing the filter switching units. There are three filter switching units and three mounting positions. The three mounting positions are respectively provided on the upper shell 1, the lower shell 10, and the partition 4. The three filter switching units are respectively installed on the three mounting positions. The upper shell 1 and the lower shell 10 are both provided with shell through holes. Both shell through holes are concentric with the light-transmitting hole 42. External light passes sequentially through the shell through hole on the upper shell 1, the light-transmitting hole 42, and the shell through hole on the lower shell 10. A convex ring is provided on the top surface of the upper shell 1 to surround its upper shell through hole. The shell through hole is square.

[0025] The upper shell 1 and the lower shell 10 are separated by the partition 4 to form two cavities. Multiple filter switching units 3 are located in the two cavities respectively. The partition separates the filter switching units to prevent multiple filter switching units from crowding together and interfering with each component when switching filters. At the same time, it prevents foreign objects from scratching all the filters 3 after they enter the IR-CUT filter switcher.

[0026] Further improvements, such as Figure 1 and Figure 5 As shown, the filter switching unit includes a movable frame 2, one or more filters 3 disposed on the movable frame 2, and a driving mechanism. There are two filters 3, which are arranged at intervals along the direction of movement of the movable frame 2. Each filter 3 filters a different spectrum. The movable frame 2 is movably disposed in the mounting position. The driving mechanism is connected to the movable frame 3 and drives the movable frame 2 to move. The multiple filters 3 switch filters as the movable frame 2 moves.

[0027] Further improvements, such as Figure 1 , Figure 3 neutralization Figure 4 As shown, the driving mechanism includes a motor 5. A guide rod 50 is arranged at intervals with the output shaft of the motor 5 in the mounting position. The guide rod 50 and the output shaft of the motor 5 are arranged at intervals in the front-back direction. The output shaft of the motor 5 extends in the left-right direction. The two ends of the guide rod 51 are respectively fixed on the left and right inner side walls of the upper cavity. The output shaft of the motor 5 is provided with a threaded groove. One end of the movable frame 2 is slidably mounted on the guide rod 50. The other end of the movable frame 2 is provided with a snap-fit ​​piece 23 that engages with the threaded groove. That is, the movable frame 2 is threadedly connected to the threaded groove through the snap-fit ​​piece 23.

[0028] Further improvements, such as Figure 3 and Figure 4 As shown, a helical spring 51 is fixedly sleeved on the output shaft of the motor 5. The helical spring 51 is fixedly sleeved on the output shaft of the motor 5 by welding or interference fit with the output shaft of the motor 5. The helical spring 51 forms a threaded groove on the output shaft of the motor 5. The two ends of the helical spring 51 are straight structures. The guide rod 50 restricts the rotation of the movable frame 2 and guides the left and right movement of the movable frame 2. When the motor 5 rotates and the helical spring 51 rotates relative to the snap-fit ​​part 23, it drives the movable frame 2 to move.

[0029] Further improvements, such as Figure 1 and Figure 2 As shown, the movable frame 2 includes a rectangular plate frame 20. Two mounting grooves 21 are provided at intervals on the frame 20. The filter 3 is installed in the corresponding mounting groove 21. The bottom of the mounting groove 21 is provided with a groove through hole 22 that exposes the corresponding filter 3. Preferably, the filter 3 is adhered to the bottom of the mounting groove 21.

[0030] Further improvements, such as Figure 1 and Figure 5As shown, the partition 4 has a recessed partition groove 43 forming an installation position, and the light-transmitting hole 42 is located at the bottom of the partition groove 43. The partition groove 43 is provided with a clearance notch 44 to avoid the filter switching unit, and the motor 5 located on the upper shell 1 and the lower shell 10 is avoided by the clearance notch 44.

[0031] Further improvements, such as Figure 1 and Figure 2 As shown, the upper shell 10, the partition 4, and the lower shell 11 are detachably connected from top to bottom. Both the upper shell 10 and the lower shell 11 are provided with multiple buckles 12. The front and rear side walls of the upper shell 10 and the lower shell 11 are each provided with two buckles 12 arranged at left and right intervals. The left and right side walls of the upper shell 10 and the lower shell 11 are each provided with a buckle 12 located in the middle. The partition 4 is provided with multiple first latches 40 that engage with the buckles 12 on the upper shell 10. The partition 4 is also provided with multiple second latches 41 that engage with the buckles 12 on the lower shell 11.

[0032] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An IR-CUT filter switcher, comprising an upper housing and a lower housing, characterized in that, It also includes multiple filter switching units and a partition located between the upper shell and the lower shell, the upper shell, the partition and the lower shell being connected; the partition is provided with light-transmitting holes; at least two of the upper shell, the lower shell and the partition are provided with mounting positions for installing the filter switching units.

2. The IR-CUT filter switcher according to claim 1, characterized in that, The filter switching unit includes a movable frame, one or more filters disposed on the movable frame, and a driving mechanism; the driving mechanism is connected to the movable frame.

3. An IR-CUT filter switcher according to claim 2, characterized in that, The drive mechanism includes a motor; a guide rod is provided in the mounting position at a distance from the output shaft of the motor; a threaded groove is provided on the output shaft of the motor; one side of the movable frame is slidably mounted on the guide rod; and a snap-fit ​​component is provided on the other end of the movable frame to engage with the threaded groove.

4. An IR-CUT filter switcher according to claim 3, characterized in that, A helical spring is fixedly sleeved on the output shaft of the motor; both ends of the helical spring are straight.

5. An IR-CUT filter switcher according to claim 2, characterized in that, The movable frame includes a rectangular plate structure frame; two mounting grooves are spaced apart on the frame; the filter is installed in the corresponding mounting groove; the bottom of the mounting groove is provided with a groove through hole that exposes the corresponding filter.

6. An IR-CUT filter switcher according to claim 1, characterized in that, The partition plate has a recessed groove forming an installation position; the partition plate groove is provided with a clearance notch to avoid the filter switching unit.

7. An IR-CUT filter switcher according to claim 1, characterized in that, The upper shell, the partition, and the lower shell are detachably connected from top to bottom.

8. An IR-CUT filter switcher according to claim 7, characterized in that, Both the upper and lower shells are provided with multiple buckles; the partition is provided with multiple first slots that engage with the buckles on the upper shell; the partition is also provided with multiple second slots that engage with the buckles on the lower shell.

9. A lens assembly, characterized in that, The lens assembly includes any one of the IR-CUT filter switchers according to claims 1 to 8.

10. A camera device, characterized in that, The camera device includes the lens assembly of claim 9.

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