Infrared filter switcher, day and night switching camera module and electronic equipment

Abstract

The utility model relates to an infrared optical filter switcher, a day and night switching camera module and an electronic device, comprising: a housing, the middle of which is provided with a light hole; the motor is arranged on the first side of the shell; the driving rod is arranged on the first side of the shell, and one end of the driving rod is connected with an output shaft of the motor; the sliding rod is arranged on the second side of the shell; the IR assembly comprises a support, an optical filter and a light-transmitting piece, the optical filter and the light-transmitting piece are arranged on the support, the first side of the support is connected to the driving rod, the second side of the support is connected to the sliding rod, and when the motor works, the IR assembly is driven by the driving rod to linearly move in the direction of the sliding rod; the sliding groove structure is arranged at the position close to the first side of the support, a sliding groove extending in the axial direction of the sliding rod is formed in the sliding groove structure, one part of the first side of the support extends into the sliding groove and can move along the sliding groove, and in the whole moving process of the IR assembly, one part of the support is located in the sliding groove all the time. According to the utility model, stable sliding of the IR assembly can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of camera modules, and in particular to an infrared filter switcher, a day and night switching camera module and electronic equipment. Background Art

[0002] With the rapid development of modern electronic technology, particularly the widespread application of optical imaging technology in various fields, the performance and stability of the infrared filter switcher (IR_CUT), a key component of camera modules, are crucial to ensuring image quality. The IR_CUT's primary function is to switch between visible and infrared light to accommodate shooting in varying lighting conditions. This day / night function, for example, is particularly important in security surveillance, law enforcement recording, and outdoor sports photography.

[0003] Traditional IR_CUT designs often include multiple internal moving parts, such as filters, drive motors, and guide rails. These design elements collectively determine the IR_CUT's structural dimensions. However, with the current trend toward smaller and lighter devices, especially in small terminal devices like body cameras and action cameras, the application of traditional large IR_CUTs is greatly limited. These small devices still demand the same functionality from the IR_CUT, but have more stringent requirements for size and weight.

[0004] To resolve this contradiction, a small-sized IR_CUT with a single-sided guide rail design has appeared on the market. By simplifying the structure and optimizing the layout, the overall size is significantly reduced, making it suitable for small terminal devices. However, this compact design also brings new challenges. Since it relies only on a single-sided guide rail for support, the other side is limited by the motor shape and miniaturization requirements, and can only use a single-point connection method (that is, there is only one point to connect to the motor guide rail, and the connection force point is near the corner of the IR component, see Figure 1 ), resulting in low structural stability, which can cause the IR component to tilt and wobble when subjected to stress. The IR plate, particularly away from the connection point, experiences significant movement, exacerbating the tilt. This in turn affects the camera's optical axis stability and image quality, manifesting as reduced resolution, lower contrast, and increased stray light.

[0005] In addition, under extreme conditions, such as drop tests, due to the insufficient structural strength of the compact IR_CUT, the strong impact force may cause the IR component to fall off the track, directly hitting and damaging the photosensitive chip, causing the camera module to fail.

[0006] Therefore, it is necessary to develop a new infrared filter switcher, day and night switching camera module and electronic equipment. Summary of the Invention

[0007] The utility model discloses a purpose is provided with infrared filter switcher, day and night switching camera module and electronic equipment, can ensure the stable sliding of IR assembly, and can ensure that IR assembly is firm in the sliding rod in drop test, avoids falling off.

[0008] In the first aspect, the utility model relates to a kind of infrared filter switchers, including:

[0009] Shell, the middle part is equipped with light transmission hole;

[0010] Motor, is set to the first side of shell;

[0011] Drive rod, is set to the first side of shell, and one end of drive rod is connected with the output shaft of motor;

[0012] Sliding rod, is set to the second side of shell, and sliding rod is parallel with drive rod;

[0013] IR assembly, including support, and filter and light transmission piece being set on support, the first side of the support is connected to drive rod, the second side of the support is connected on sliding rod, for when motor works, by drive rod IR assembly is driven along sliding rod direction and is linearly back and forth movement, to realize the switching of filter and light transmission piece;

[0014] Further comprising:

[0015] Slide groove structure, is set to the position close to the first side of the support, the slide groove structure is opened and has been extended along the slide groove of the axial direction of sliding rod, a part of the first side of the support is inserted into the slide groove and can be moved along slide groove, and in the whole movement process of IR assembly, a part of the support is always located in the slide groove.

[0016] Optionally, the slide groove structure is set on shell, and slide groove structure and shell are integrally formed structure.

[0017] Optionally, the slide groove structure is set on the motor shell of motor, and slide groove structure and motor shell are integrally formed structure.

[0018] Optionally, the drive rod is screw rod;

[0019] The first side of the support is equipped with sliding sleeve rod near the end of screw rod, and the sliding sleeve rod is connected with screw rod.Screw rod is used to convert the rotary motion of motor into linear motion, and drive support to do linear motion through sliding sleeve rod, to realize the switching of filter and light transmission piece.

[0020] Optionally, the two ends of the second side of the bracket are each provided with a slide piece pair, the slide piece pair comprises an upper slide piece and a lower slide piece, the middle part of the upper slide piece is upwardly protruding, the middle part of the lower slide piece is downwardly protruding, and the upper slide piece and the lower slide piece jointly form a ring-shaped guide ring; the slide piece pair is in sliding connection with the slide rod through the ring-shaped guide ring. The reliable connection of the bracket and the slide rod can be further ensured.

[0021] Optionally, the two ends of the slide rod are respectively mounted on the corresponding positions of the shell.

[0022] In the second aspect, the infrared filter switcher is used in the day and night switching camera module.

[0023] In the third aspect, the day and night switching camera module is used in the electronic device.

[0024] The utility model has the following advantages:

[0025] (1) The infrared filter switcher has high stability during the movement of the IR assembly, thanks to the design of the sliding groove structure. Specifically, a part of the bracket is always tightly embedded in the sliding groove during the entire sliding path of the IR assembly. This design ensures the stable sliding of the IR assembly when switching the filter, avoids shaking and deviation, and further improves the parallelism between the IR assembly and the photosensitive chip by more than 1.5°. This improvement directly leads to a significant improvement in image clarity and a significant reduction in stray light. The improvement in parallelism ensures that the light can be more accurately projected onto the photosensitive chip when passing through the filter, reducing image distortion and stray light interference caused by angle deviation, thereby improving the imaging quality of the camera module under different lighting conditions.

[0026] (2) The sliding groove structure of the infrared filter switcher can effectively limit the shaking of the IR assembly in the Z-axis direction, and also enables the entire infrared filter switcher to meet the strict requirements of the 2-meter drop test of the entire machine. During the drop test, the sliding groove structure effectively prevents the IR assembly from impacting the photosensitive element or other sensitive components due to impact force, thereby protecting the integrity and functionality of the camera module.

[0027] (3) The infrared filter switcher has the advantages of compact overall structure and low cost while meeting high performance requirements. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the prior art;

[0029] Figure 2 is a structural schematic diagram of the infrared filter switcher (one filter mode) in the embodiment of the present application.

[0030] Figure 3 Schematic diagram of the structure of the infrared filter switcher described in an embodiment of the present application (another filtering mode);

[0031] Figure 4 Schematic diagram of the matching structure of the slide structure and the bracket in the embodiment of the present application;

[0032] Description of the reference signs in the accompanying drawings:

[0033] In the figure: 1. Housing, 2. Filter, 3. Transparent sheet, 4. Motor, 5. Driving rod, 6. Sliding sleeve, 7. Upper sliding sheet, 8. Lower sliding sheet, 9. Sliding rod, 10. Slide groove structure, 11. Bracket, 12. Slide groove. DETAILED DESCRIPTION

[0034] The following describes the implementation of the technical solution of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. The present invention may also be implemented or applied through different specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0035] like Figures 2 to 4 As shown, in an embodiment of the present application, an infrared filter switcher includes a housing 1, a motor 4, a drive rod 5, a slide rod 9, an IR component and a slide groove structure 10. A light-transmitting hole is provided in the middle of the housing 1. The motor 4 is arranged on the first side of the housing 1. The drive rod 5 is arranged on the first side of the housing 1, and one end of the drive rod 5 is connected to the output shaft of the motor 4. The slide rod 9 is arranged on the second side of the housing 1 (the first side and the second side are opposite to each other), and the slide rod 9 is parallel to the drive rod 5. The IR component includes a bracket 11, and a filter 2 and a light-transmitting plate 3 arranged on the bracket 11. The first side of the bracket 11 is connected to the drive rod 5, and the second side of the bracket 11 is connected to the slide rod 9, which is used to drive the IR component to move back and forth in a straight line along the direction of the slide rod 9 through the drive rod 5 when the motor 4 is working, so as to realize the switching of the filter 2 and the light-transmitting plate 3. A slide groove structure 10 is positioned near the first side of the bracket 11. It defines a slide groove 12 extending axially along the slide bar 9. A portion of the first side of the bracket 11 extends into and moves along this groove. Throughout the movement of the IR component, a portion of the bracket 11 remains within this groove. This groove provides stable support for the IR component, ensuring the verticality of the optical axis. It also prevents the IR component from striking the photosensitive chip if the infrared filter switcher falls during operation.

[0036] like Figures 2 to 4 As shown, in a possible embodiment, the slide groove structure 10 is provided on the housing 1, and the slide groove structure 10 and the housing 1 are an integrally formed structure. This design can reduce the number of components and simplify the assembly process.

[0037] In another possible embodiment, the chute structure 10 is provided on the motor housing of the motor 4, and the chute structure 10 and the motor housing are integrally formed. This design can reduce the number of components and simplify the assembly process.

[0038] like Figure 2 and Figure 3 As shown, in one possible embodiment, the drive rod 5 is a screw rod; a sliding sleeve rod 6 is provided on a first side of the bracket 11, near one end of the screw rod, and the sliding sleeve rod 6 is connected to the screw rod. The screw rod is used to convert the rotational motion of the motor 4 into linear motion, and the sliding sleeve rod 6 drives the bracket 11 to move linearly to achieve switching between the filter 2 and the light-transmitting plate 3.

[0039] like Figure 2 and Figure 3 As shown, in one possible embodiment, a pair of sliding plates are provided at both ends of the second side of the bracket 11. The sliding plate pair includes an upper sliding plate 7 and a lower sliding plate 8. The middle portion of the upper sliding plate 7 protrudes upward, and the middle portion of the lower sliding plate 8 protrudes downward, together forming an annular guide ring. The sliding plate pair is slidably connected to the slide rod 9 via the annular guide ring. The provision of the annular guide ring provides a stable sliding guide, allowing the bracket 11 to remain stable during movement.

[0040] like Figure 2 and Figure 3 As shown, in a possible embodiment, both ends of the sliding rod 9 are respectively installed at corresponding positions of the housing 1 .

[0041] In an embodiment of the present application, a day and night switching camera module adopts an infrared filter switcher as in the embodiment of the present application.

[0042] In an embodiment of the present application, an electronic device adopts a day and night switching camera module as in the embodiment of the present application.

[0043] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. An infrared filter switcher, comprising: A housing (1), wherein a light-transmitting hole is provided in the center thereof; A motor (4) is arranged on a first side of the housing (1); A driving rod (5) is arranged on a first side of the housing (1), and one end of the driving rod (5) is connected to an output shaft of the motor (4); A slide rod (9) is arranged on the second side of the housing (1), and the slide rod (9) is parallel to the driving rod (5); An IR component comprises a bracket (11), and a filter (2) and a light-transmitting plate (3) arranged on the bracket (11), wherein a first side of the bracket (11) is connected to a driving rod (5), and a second side of the bracket (11) is connected to a slide bar (9), and is used for driving the IR component to move back and forth in a straight line along the slide bar (9) via the driving rod (5) when the motor (4) is working, so as to realize switching between the filter (2) and the light-transmitting plate (3); It is characterized by further comprising: A slide groove structure (10) is arranged at a position close to the first side of the bracket (11), and a slide groove (12) extending axially along the slide rod (9) is provided on the slide groove structure (10). A portion of the first side of the bracket (11) extends into the slide groove (12) and can move along the slide groove (12). In addition, during the entire movement process of the IR component, a portion of the bracket (11) is always located in the slide groove (12).

2. The infrared filter switcher according to claim 1, wherein: The slide groove structure (10) is arranged on the housing (1), and the slide groove structure (10) and the housing (1) are an integrally formed structure.

3. The infrared filter switcher according to claim 1, wherein: The slide groove structure (10) is arranged on the motor housing of the motor (4), and the slide groove structure (10) and the motor housing are an integrally formed structure.

4. The infrared filter switcher according to claim 1, wherein: The driving rod (5) is a spiral rod; A sliding sleeve rod (6) is provided on the first side of the bracket (11) close to one end of the screw rod, and the sliding sleeve rod (6) is connected to the screw rod.

5. The infrared filter switcher according to claim 1, wherein: Both ends of the second side of the bracket (11) are provided with a pair of sliding plates, the pair of sliding plates comprising an upper sliding plate (7) and a lower sliding plate (8), the middle portion of the upper sliding plate (7) protrudes upward, and the middle portion of the lower sliding plate (8) protrudes downward, together forming an annular guide ring; the pair of sliding plates is slidably connected to the slide rod (9) via the annular guide ring.

6. The infrared filter switcher according to claim 1, wherein: Both ends of the slide rod (9) are respectively mounted on corresponding positions of the housing (1).

7. A day and night switching camera module, characterized by: An infrared filter switcher as described in any one of claims 1 to 6 is used.

8. An electronic device, characterized in that: A day and night switching camera module as described in claim 7 is used.

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