Filter switcher and application thereof

Abstract

The invention relates to a filter switcher and application thereof. The filter switcher comprises a shell, and a long-focus filter module and a short-focus filter module are arranged in the shell; the long-focus filter module comprises a first frame, an infrared filter and a first transparent sheet; the short-focus filter module comprises a second frame, a color filter and a second transparent sheet; the wavelength of the infrared optical filter is greater than that of the color optical filter; the first frame and the second frame are located on the same horizontal plane and slidably arranged in the shell. A first light hole and a second light hole are formed in the front side surface of the shell; the first frame moves relative to the first light hole so as to switch the infrared filter or the first transparent sheet to be opposite to the first light hole; the second frame moves relative to the second light-transmitting hole so as to switch the color filter or the second transparent sheet to be opposite to the second light-transmitting hole; the long-focus filter module and the short-focus filter module are integrally designed, long-focus and short-focus free switching imaging is effectively achieved through the infrared optical filter and the color optical filter, and the device is suitable for binocular imaging application.

Description

Technical Field

[0001] The present invention relates to the technical field of photographic equipment, and more specifically, to a filter switcher and application thereof. Background Art

[0002] With the rapid development of imaging equipment, various scenes such as industrial and agricultural production, intelligent transportation, medical home, security monitoring, etc. currently use video devices to perform multi-light source imaging during the day and at night. In order to obtain clear images both during the day and at night, cameras and other video devices are generally equipped with a dual filter switcher (Infrared Cut, referred to as IR-CUT). The dual filter switcher specifically refers to setting two different filters on a single switching structure. When in use, according to environmental changes, the filter that matches the environment is switched to perform photosensitive imaging. Under this structure, the two filters cannot be enabled at the same time, and imaging can only be performed through a single filter. When different degrees of imaging are required in the same environment, such as when long and short focal lengths need to be freely switched for imaging, it obviously cannot meet the needs, and the application limitations are more obvious. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a filter switcher and application thereof in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] On the one hand, the present invention provides a filter switcher, including a shell, in which a telephoto filter module and a short-focus filter module are arranged; the telephoto filter module includes a first frame, an infrared filter and a first transparent sheet, and the infrared filter and the first transparent sheet are arranged side by side in the first frame; the short-focus filter module includes a second frame, a color filter and a second transparent sheet, and the color filter and the second transparent sheet are arranged side by side in the second frame; the wavelength of the infrared filter is greater than the wavelength of the color filter; the first frame and the second frame are located in the same horizontal plane and are slidably arranged in the shell respectively; a first light-transmitting hole and a second light-transmitting hole are opened on the front side surface of the shell; the first frame moves relative to the first light-transmitting hole to switch the infrared filter or the first transparent sheet to be opposite to the first light-transmitting hole; the second frame moves relative to the second light-transmitting hole to switch the color filter or the second transparent sheet to be opposite to the second light-transmitting hole.

[0006] In some embodiments, the shell includes a front shell and a rear shell that cover each other, a receiving cavity is provided in the front shell, a partition is provided in the receiving cavity, and the partition divides the receiving cavity into a first chamber and a second chamber; the first light-transmitting hole and the second light-transmitting hole are both opened on the front side of the front shell, the first light-transmitting hole is communicated with the first chamber, and the second light-transmitting hole is communicated with the second chamber; a first driving mechanism is provided in the first chamber, and the first driving mechanism is used to drive the first frame to move back and forth in a straight line; a second driving mechanism is provided in the second chamber, and the second driving mechanism is used to drive the second frame to move back and forth in a straight line.

[0007] In some embodiments, a first pressure sensor is provided on a side wall of the first chamber corresponding to the reciprocating movement direction of the first frame; and a second pressure sensor is provided on a side wall of the second chamber corresponding to the reciprocating movement direction of the second frame.

[0008] In some embodiments, a first lens connecting part and a second lens connecting part are further provided on the front side surface of the front shell, the interiors of the first lens connecting part and the second lens connecting part are both hollow, the interior of the first lens connecting part is communicated with the first light-transmitting hole, and the interior of the second lens connecting part is communicated with the second light-transmitting hole; the inner peripheral side walls of the first lens connecting part and the second lens connecting part are both provided with internal threads.

[0009] In some embodiments, a plurality of first card slots distributed at equal intervals are provided on the outer peripheral side wall of the first lens connecting portion; a plurality of second card slots distributed at equal intervals are provided on the outer peripheral side wall of the second lens connecting portion.

[0010] In some embodiments, the wavelength range of the infrared filter is 900-1200 NM.

[0011] In some embodiments, the wavelength range of the color filter is 370-650NM.

[0012] In some embodiments, dust-proof and light-transmitting sheets are disposed in the first light-transmitting hole and the second light-transmitting hole.

[0013] On the other hand, the present invention further provides a binocular recognition control method, which is implemented by using the filter switcher described in any one of the above items, wherein the filter switcher is configured with a first lens corresponding to the telephoto filter module and a second lens corresponding to the short-focus filter module; wherein the telephoto filter module is used for shooting scenes in invisible light, and the short-focus filter module is used for shooting scenes in visible light; and the method comprises the following steps:

[0014] Acquire a long-focus switching signal and / or a short-focus switching signal, and output a pulse voltage according to the long-focus switching signal and / or the short-focus switching signal to control the movement of the corresponding long-focus filter module and / or the short-focus filter module;

[0015] The telephoto filter module cooperates with the first lens to form an image at the first light transmission hole, and / or the short-focus filter module cooperates with the second lens to form an image at the second light transmission hole;

[0016] A first feature of the imaging formed by the telephoto filter module in cooperation with the first lens and / or a second feature of the imaging formed by the short-focus filter module in cooperation with the second lens is obtained, and the first feature and / or the second feature are processed through image AI.

[0017] The beneficial effects of the present invention are: different from the prior art, the filter switcher of the present invention integrates a telephoto filter module and a short-focus filter module in a shell; the telephoto filter module includes a first frame, an infrared filter and a first transparent sheet; the short-focus filter module includes a second frame, a color filter and a second transparent sheet; the wavelength of the infrared filter is greater than the wavelength of the color filter; the first frame and / or the second frame moves to move the infrared filter and / or the color filter, thereby effectively realizing long- and short-focus free switching imaging through the infrared filter and / or the color filter, which is suitable for binocular imaging applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view schematic diagram of a filter switcher in Embodiment 1 of the present invention;

[0019] Figure 2 is a rear view schematic diagram of the filter switcher in the first embodiment of the present invention;

[0020] Figure 3 is a front side schematic view of the front shell in the first embodiment of the present invention;

[0021] Figure 4 is a schematic rear side view of the front housing in the first embodiment of the present invention;

[0022] Figure 5 Schematic diagram of the implementation flow of the binocular recognition control method in the second embodiment of the present invention;

[0023] Names and serial numbers in the figure are as follows: housing 1; telephoto filter module 2; short-focus filter module 3; first frame 21; infrared filter 22; first transparent sheet 23; second frame 31; color filter 32; second transparent sheet 33; first light-transmitting hole 101; second light-transmitting hole 102; front housing 11; rear housing 12; partition 111; first driving mechanism 4; second driving mechanism 5; motor 41; fixed shaft 42; spring 43; guide rod 6; clamping arm 211; limiter 212; first pressure sensor 71; second pressure sensor 72; first lens connecting part 81; second lens connecting part 82; first card slot 810; second card slot 820. DETAILED DESCRIPTION

[0024] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0027] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" etc. indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0029] Embodiment 1: Embodiment 1 of the present invention is as follows Figures 1 to 4As shown in the figure, a filter switcher includes a housing 1, in which a telephoto filter module 2 and a short-focus filter module 3 are arranged; the telephoto filter module 2 includes a first frame 21, an infrared filter 22 and a first transparent sheet 23, and the infrared filter 22 and the first transparent sheet 23 are arranged side by side in the first frame 21; the short-focus filter module 3 includes a second frame 31, a color filter 32 and a second transparent sheet 33, and the color filter 32 and the second transparent sheet 33 are arranged side by side in the second frame 31; the wavelength of the infrared filter 22 The wavelength of the infrared filter 22 is greater than that of the color filter 32; the first frame 21 and the second frame 31 are located in the same horizontal plane and are respectively slidably arranged in the shell 1; the front side of the shell 1 is provided with a first light-transmitting hole 101 and a second light-transmitting hole 102; the first frame 21 moves relative to the first light-transmitting hole 101 to switch the infrared filter 22 or the first transparent sheet 23 to be opposite to the first light-transmitting hole 101; the second frame 31 moves relative to the second light-transmitting hole 102 to switch the color filter 32 or the second transparent sheet 33 to be opposite to the second light-transmitting hole 102.

[0030] In the filter switcher of this embodiment, the long-focus filter module 2 and the short-focus filter module 3 can switch the imaging freely, specifically, the infrared filter 22 and the color filter 32 can be used for simultaneous imaging, and the infrared filter 22 and the color filter 32 can be used for separate imaging. The first transparent sheet 23 and the second transparent sheet 33 are set to satisfy the separate imaging of the infrared filter 22 and the color filter 32. The transparency of the first transparent sheet 23 and the second transparent sheet 33 can be the same or different, and can be designed and selected according to the actual application needs. The filter switcher of this embodiment has better adaptability to different light environments, and there is no need to configure multiple camera devices in a complicated manner.

[0031] In this embodiment, the shell 1 includes a front shell 11 and a rear shell 12 that cover each other, and the front shell 11 and the rear shell 12 can be fastened and installed by fasteners such as screws. A receiving chamber is provided in the front shell 11, and a partition 111 is provided in the receiving chamber, and the partition 111 divides the receiving chamber into a first chamber and a second chamber. The first chamber and the second chamber are of the same size. The first light-transmitting hole 101 and the second light-transmitting hole 102 are both opened on the front side of the front shell 11, the first light-transmitting hole 101 is connected to the first chamber, and the second light-transmitting hole 102 is connected to the second chamber. A first driving mechanism 4 is provided in the first chamber, and the first driving mechanism 4 is used to drive the first frame 21 to move back and forth in a straight line; a second driving mechanism 5 is provided in the second chamber, and the second driving mechanism 5 is used to drive the second frame 31 to move back and forth in a straight line.

[0032] Specifically, the first driving mechanism 4 includes a motor 41, a fixed shaft 42 and a spring 43. The fixed shaft 42 is fixed on the motor 41, and the spring 43 is sleeved on the fixed shaft 42. One end of the spring 43 is connected to the motor 41, and the motor 41 drives the spring 43 to rotate relative to the fixed shaft 42; a guide rod 6 parallel to the fixed shaft 42 is also provided in the first chamber, and the first frame 21 is located between the guide rod 6 and the fixed shaft 42, and the guide rod 6 and the fixed shaft 42 are correspondingly located on two opposite sides of the first frame 21; one side of the first frame 21 is slidably disposed on the guide rod 6, and the other side of the first frame 21 is connected to the other end of the spring 43.

[0033] Among them, a clamping arm 211 is provided on one side of the first frame 21 close to the fixed shaft 42, and the first frame 21 is connected to the end of the spring 43 away from the motor 41 through the clamping arm 211, and two limiters 212 are provided on one side of the first frame 21 close to the guide rod 6. The limiters 212 are composed of two staggered clamping pieces, and there is a space between the two clamping pieces in which the guide rod 6 can be placed, so that the first frame 21 can move back and forth on the guide rod 6. Then, when the spring 43 rotates, the first frame 21 can be controlled to move in the direction close to or away from the motor 41, so as to adjust the position of the first frame 21, and finally the position of the infrared filter 22 or the first transparent sheet 23 in the first frame 21 is adjusted accordingly at the first light transmission hole 101.

[0034] It should be noted that the structure of driving the first frame 21 to move by the motor 41, the fixed shaft 42 and the spring 43 and making the first frame 21 slide on the guide rod 6 by the clamping arm 211 and the limiter 212 is relatively existing. In practical application, the existing technology can be specifically referred to. This embodiment only briefly describes it and does not constitute a specific limitation. The structure of the second drive mechanism 5 can be the same as the first drive mechanism 4, or any other existing suitable drive component can be used to achieve the movement drive of the second frame 31, which is not specifically limited in this embodiment.

[0035] In this embodiment, a first pressure sensor 71 is provided on a side wall of the first chamber corresponding to the reciprocating direction of the first frame 21. Figure 4 As shown, when the guide rod 6 and the fixed shaft 42 are correspondingly located on the left and right sides of the first frame 21, the first frame 21 can move up and down. Accordingly, a first pressure sensor 71 can be respectively arranged at the upper and lower inner walls of the first chamber, which is used to contact the upper side or lower side of the first frame 21 when the first frame 21 moves up or down to the right position, so as to judge whether the movement of the first frame 21 is in place. A second pressure sensor 72 is arranged on the side wall of the second chamber corresponding to the reciprocating movement direction of the second frame 31. The arrangement of the second pressure sensor 72 is the same as the first pressure sensor 71 mentioned above.

[0036] In this embodiment, a first lens connecting portion 81 and a second lens connecting portion 82 are further provided on the front side surface of the front shell 11. The interiors of the first lens connecting portion 81 and the second lens connecting portion 82 are both hollow. The interior of the first lens connecting portion 81 communicates with the first light-transmitting hole 101, and the interior of the second lens connecting portion 82 communicates with the second light-transmitting hole 102. Internal threads are provided on the inner peripheral side walls of the first lens connecting portion 81 and the second lens connecting portion 82. Further, a plurality of equally spaced first card slots 810 are provided on the outer peripheral side wall of the first lens connecting portion 81; a plurality of equally spaced second card slots 820 are provided on the outer peripheral side wall of the second lens connecting portion 82. The first lens connecting portion 81 is configured to install the first lens through the internal threads on its inner peripheral side wall and the first card slot 810 on its outer peripheral side wall; the second lens connecting portion 82 is configured to install the second lens through the internal threads on its inner peripheral side wall and the second card slot 820 on its outer peripheral side wall. The selection of the first lens and the second lens shall be subject to actual application.

[0037] Furthermore, the wavelength range of the infrared filter 22 is 900-1200 NM, which can be used for shooting scenes in invisible light. The wavelength range of the color filter 32 is 370-650 NM, which can be used for shooting scenes in visible light. For example, in this embodiment, the wavelength of the infrared filter 22 is 940 NM; the wavelength of the color filter 32 is 650 NM.

[0038] In order to ensure that the shell 1 is clean and not easily contaminated by dust and impurities, in the present embodiment, dustproof light-transmitting sheets (not shown in the drawings) are provided in the first light-transmitting hole 101 and the second light-transmitting hole 102. The size of the dustproof light-transmitting sheet (not shown in the drawings) is adapted to the inner aperture of the corresponding light-transmitting hole so that it can be sealed therein. The sealing material can be an adhesive.

[0039] Embodiment 2: Embodiment 2 of the present invention is as follows Figure 5 As shown in , a binocular recognition control method is provided, which is implemented by applying the filter switcher provided in the first embodiment, and the filter switcher is configured with a first lens corresponding to the telephoto filter module 2 and a second lens corresponding to the short-focus filter module 3; wherein the telephoto filter module 2 is used for shooting scenes in invisible light, and the short-focus filter module 3 is used for shooting scenes in visible light; specifically, the method comprises the following steps:

[0040] S1: obtaining a long focus switching signal and / or a short focus switching signal, and outputting a pulse voltage according to the long focus switching signal and / or the short focus switching signal to control the movement of the corresponding long focus filter module 2 and / or the short focus filter module 3;

[0041] S2: using the long-focus filter module 2 to cooperate with the first lens at the first light transmission hole 101 to form an image, and / or using the short-focus filter module 3 to cooperate with the second lens at the second light transmission hole 102 to form an image;

[0042] S3: Obtain a first feature of the imaging formed by the telephoto filter module 2 in cooperation with the first lens, and / or a second feature of the imaging formed by the short-focus filter module 3 in cooperation with the second lens, and process the first feature and / or the second feature through image AI.

[0043] Among them, the telephoto switching signal and / or the short-focus switching signal are issued through the control system, and the control system is issued according to the user's instructions. Then, accordingly, the first driving mechanism 4 for driving the telephoto filter module 2 to move and / or the second driving mechanism 5 for driving the short-focus filter module 3 to move are started and operated, so that the telephoto filter module 2 and / or the short-focus filter module 3 move a certain distance, and correspondingly meet the imaging at the first light-transmitting hole 101 and the second light-transmitting hole 102, and can realize the free switching of the telephoto filter and the short-focus filter, thereby realizing binocular recognition control imaging, and the operation is simple.

[0044] It should be understood that, for ordinary technical workers in the field, improvements or changes can be made according to the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A filter switcher, comprising a housing, characterized in that: A telephoto filter module and a short-focus filter module are provided in the shell; the telephoto filter module includes a first frame, an infrared filter and a first transparent sheet, and the infrared filter and the first transparent sheet are arranged side by side in the first frame; the short-focus filter module includes a second frame, a color filter and a second transparent sheet, and the color filter and the second transparent sheet are arranged side by side in the second frame; the wavelength of the infrared filter is greater than the wavelength of the color filter; the first frame and the second frame are located in the same horizontal plane and are slidably arranged in the shell respectively; a first light-transmitting hole and a second light-transmitting hole are opened on the front side surface of the shell; the first frame moves relative to the first light-transmitting hole to switch the infrared filter or the first transparent sheet to be opposite to the first light-transmitting hole; the second frame moves relative to the second light-transmitting hole to switch the color filter or the second transparent sheet to be opposite to the second light-transmitting hole.

2. The filter switcher according to claim 1, characterized in that: The shell includes a front shell and a rear shell that cover each other, a receiving cavity is provided in the front shell, a partition is provided in the receiving cavity, and the partition divides the receiving cavity into a first cavity and a second cavity; the first light-transmitting hole and the second light-transmitting hole are both opened on the front side of the front shell, the first light-transmitting hole is communicated with the first cavity, and the second light-transmitting hole is communicated with the second cavity; a first driving mechanism is provided in the first cavity, and the first driving mechanism is used to drive the first frame to move back and forth in a straight line; a second driving mechanism is provided in the second cavity, and the second driving mechanism is used to drive the second frame to move back and forth in a straight line.

3. The filter switcher according to claim 2, characterized in that: A first pressure sensor is provided on a side wall in the first chamber corresponding to the reciprocating direction of the first frame; and a second pressure sensor is provided on a side wall in the second chamber corresponding to the reciprocating direction of the second frame.

4. The filter switcher according to claim 2, characterized in that: A first lens connecting part and a second lens connecting part are also provided on the front side surface of the front shell. The interiors of the first lens connecting part and the second lens connecting part are both hollow. The interior of the first lens connecting part is communicated with the first light-transmitting hole, and the interior of the second lens connecting part is communicated with the second light-transmitting hole. Internal threads are provided on the inner circumferential side walls of the first lens connecting part and the second lens connecting part.

5. The filter switcher according to claim 4, characterized in that: A plurality of first card slots distributed at equal intervals are arranged on the outer peripheral side wall of the first lens connecting portion; a plurality of second card slots distributed at equal intervals are arranged on the outer peripheral side wall of the second lens connecting portion.

6. The filter switcher according to claim 1, characterized in that: The wavelength range of the infrared filter is 900-1200NM.

7. The filter switcher according to claim 1, characterized in that: The wavelength range of the color filter is 370-650NM.

8. The filter switcher according to any one of claims 1 to 7, characterized in that: Dust-proof and light-transmitting sheets are disposed in the first light-transmitting hole and the second light-transmitting hole.

9. A binocular recognition control method, the method being implemented by using the filter switcher according to any one of claims 1 to 8, wherein the filter switcher is provided with a first lens corresponding to a telephoto filter module and a second lens corresponding to the short-focus filter module; wherein: The long-focus filter module is used for shooting scenes in invisible light, and the short-focus filter module is used for shooting scenes in visible light. The method is characterized in that: the method comprises the following steps: Acquire a long-focus switching signal and / or a short-focus switching signal, and output a pulse voltage according to the long-focus switching signal and / or the short-focus switching signal to control the movement of the corresponding long-focus filter module and / or the short-focus filter module; The telephoto filter module cooperates with the first lens to form an image at the first light transmission hole, and / or the short-focus filter module cooperates with the second lens to form an image at the second light transmission hole; A first feature of the imaging formed by the telephoto filter module in cooperation with the first lens and / or a second feature of the imaging formed by the short-focus filter module in cooperation with the second lens is obtained, and the first feature and / or the second feature are processed through image AI.

Images