Integrated filter disc switcher at front end of camera

Abstract

The invention discloses an integrated filter disc switcher at the front end of a camera. The integrated filter disc switcher is an optical filter disc switching device which can be directly mounted at the front end of an image sensor of the camera. The integrated filter disc switcher comprises a switcher main body, a filter disc switching plate, an interface adapter, a left side light shielding plate and a right side light shielding plate, a plurality of filter disc mounting grooves are formed in the filter disc switching plate in parallel, and the filter disc mounting grooves are inserted into a slide way in the switcher main body from the side face; the switcher main body is provided with a light-transmitting hole, the front end of the hole is provided with an interface adapter mounting female port, and the rear end is provided with an internal thread; the front end of the interface adapter is provided with an interface thread, and the rear end of the interface adapter is provided with an interface adapter mounting male port to be inserted into the interface adapter mounting female port; and the left shading plate and the right shading plate are respectively arranged on the left side and the right side of the switcher main body and are respectively provided with a filter disc switching plate movement avoiding groove and a shading surface. By using the integrated filter disc switcher, stable installation of the camera can be ensured, and rapid dismounting, mounting and switching functions of the filter disc at the front end of the camera can be realized.

Description

Technical Field

[0001] The present invention relates to an optical filter switching device used in the field of optical image acquisition, and in particular to an integrated filter switch that can be directly mounted on the front end of a camera image sensor. Background Art

[0002] When a scientific camera requires filters for image acquisition, it's typically mounted on the camera port of a high-end commercial microscope, using the microscope's filter wheel accessory to combine and switch filters to capture the desired image. However, as the number of filters required within a filter set increases, the limited number of filter mounting locations within the high-end commercial microscope limits the number of filters that can be installed within the desired filter set. For lower-end commercial microscopes without a filter wheel accessory, not only is the number of filters that can be installed within the desired filter set limited, but switching filters is often impossible. Summary of the Invention

[0003] In order to solve the above problems, the main purpose of the present invention is to provide an integrated filter switch that can be directly installed or multiple filters can be installed in series on the front end of a camera image sensor.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A camera front-end integrated filter switcher comprises a switcher body (SRB), a filter switching plate (FSP), an interface adapter (IA), a left light shielding plate (CLS-L) and a right light shielding plate (CLS-R), wherein: a filter switching plate slide is provided inside the rear side of the switcher body, a hole adapted to the diameter of the filter is provided in the middle, a female interface adapter mounting port is provided at the front end of the hole, and an internal thread is provided at the rear end of the hole; a plurality of filter mounting slots are arranged in parallel on the filter switching plate, and the filter switching plate is inserted into the filter switching plate slide from the side of the switcher body; the front end of the interface adapter is provided with an interface thread, and the rear end is provided with an interface adapter mounting male port for inserting into the interface adapter mounting female port of the switcher body to achieve installation; the left light shielding plate and the right light shielding plate are respectively installed on the left and right sides of the switcher body, and the left light shielding plate and the right light shielding plate are both provided with a filter switching plate movement avoidance groove and a light shielding surface to facilitate the left and right sliding of the filter switching plate and prevent light from being projected onto other filters other than the working filter.

[0006] Furthermore, the top surface of the filter switching plate is provided with a plurality of positioning slots for securing its position, and the switch body is provided with a top screw hole. When the filter switching plate is inserted into the switch body, a set screw passes through the top screw hole and falls into the positioning slot to form an elastic fastening, thereby making the relative position of the filter switching plate and the switch body adjustable. Preferably, the bottom surface of the filter switching plate is also provided with a plurality of positioning slots symmetrical with the top surface. This symmetrical arrangement allows the filter switching plate to be used upside down after confirming that the filter orientation in the filter switching plate is correct.

[0007] Furthermore, three equally spaced fastening screw holes are provided on the outer peripheral side of the interface adapter mounting female port of the switch body, and a fastening slot is provided on the interface adapter mounting male port of the interface adapter. After the interface adapter mounting male port is inserted into the interface adapter mounting female port, the interface adapter is kept locked in the switch body by passing a fastening screw through the fastening screw hole and inserting it into the fastening slot.

[0008] Furthermore, the left and right sides of the switch body are provided with screw holes for fixing the light shield, and the left and right light shields are each provided with fixing screw mounting holes. Fixing screws are inserted through the fixing screw mounting holes and into the light shield fixing screw holes on the left and right sides of the switch body, thereby fastening the left and right light shields to the left and right sides of the switch body, respectively. Preferably, two light shield fixing screw holes are provided on each side of the switch body, and two fixing screw mounting holes are also provided on each side of the left and right light shields, so that the relative positions of the left and right light shields and the switch body are in a fixed state that cannot be adjusted. Furthermore, the rear end of the hole in the switch body is provided with an internal thread, which is located at the light inlet of the filter within the device, allowing other devices to be connected in series with the device via the internal thread. The interior of the hole in the switch body is also provided with an internal thread, which is located at the light outlet of the filter within the device, to reduce the specular reflection effect of light.

[0009] Furthermore, the interface adapter is provided with an internal thread, which can reduce the reflection effect of light.

[0010] Furthermore, the bottom of the switch body is provided with precision slots and pinholes. These slots and pinholes meet precision requirements, ensuring high repeatability when the device is installed using pin positioning. Furthermore, the bottom of the switch body is provided with mounting holes, through which bolts are inserted to secure the device.

[0011] Furthermore, the filter mounting slots provided on the filter switching plate are all threaded through holes with internal threads. In some specific embodiments of the present invention, the thread parameters are 1.035"-40, which are suitable for installing lenses with a diameter of 1 inch, or other types of lenses can be installed therein by adapting to the 1.035"-40 internal threads. Preferably, the filter mounting slots have an inclination angle of 2 to 3 degrees to ensure that the reflected light from the filter is not reflected back into the original light path.

[0012] Furthermore, the filter switching plate is provided with a side handle. In some specific embodiments of the present invention, the side handle is a side groove, which can be pinched to increase the friction of the finger during use, making the sliding of the filter switching plate easier.

[0013] Furthermore, the filter switching plate is provided with side expansion screw holes to provide an interface for side-mounting an auxiliary switching device, thereby providing a diversified expansion of the filter switching method.

[0014] The present invention also provides a method for using the camera front-end integrated filter switcher, comprising:

[0015] Install the required filter into the filter installation slot of the filter switching board and secure it;

[0016] Fix the switch body in the use position, and then install the left and right shading plates on the left and right sides of the switch body respectively;

[0017] Insert the filter switching board with the filter installed into the filter switching board guide of the switch body;

[0018] Insert the male interface adapter mounting port of the interface adapter into the female interface adapter mounting port of the switch body and secure;

[0019] When you need to use a filter or switch filters, push or pull the filter switching plate to move it left or right;

[0020] When it is necessary to connect multiple camera front-end integrated filter switches in series, the interface thread at the front end of the interface adapter is screwed into the internal thread at the rear end of the switch body located in front of it. After tightening, the interface adapter interface mounting male port is inserted into the interface adapter mounting female port of the switch body located behind it to achieve series connection.

[0021] Compared with the existing technology, the camera front-end integrated filter switcher provided by the present invention has the following beneficial effects:

[0022] 1. Place the filter installation position at the front of the camera, without occupying the installation position of the excitation filter and dichroic mirror at the front of the tube lens.

[0023] 2. The integrated filter switch of the present invention can be connected in series to achieve the matching and switching of multiple filter groups.

[0024] 3. Suitable for optical path expansion of various commercial mirrors.

[0025] 4. The shading design is used in combination with the light path of the space.

[0026] 5. Easy to use and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram showing the assembly and overall structure of the integrated filter switcher for the camera front end in an embodiment of the present invention.

[0028] Figure 2 2 is a structural diagram of the switch body in an embodiment of the present invention, wherein the upper diagram shows the bottom surface of the switch body, and the lower diagram shows the front and back of the switch body.

[0029] Figure 3 2 is a structural diagram of the filter switching plate in an embodiment of the present invention.

[0030] Figure 4 The diagram shows the structure of the interface adapter in different directions according to the embodiment of the present invention.

[0031] Figure 5 1 is a structural diagram showing the left shading plate in different directions in an embodiment of the present invention.

[0032] Figure 6 1 is a structural diagram showing the right shading plate in different directions in an embodiment of the present invention.

[0033] In the picture:

[0034] 101—Second fixing screw of left light shield, 102—First fixing screw of left light shield, 103—Left light shield, 104—First fixing screw of interface adapter, 105—Filter switching plate, 106—Flute fixing screw, 107—Second fixing screw of interface adapter, 108—Right light shield, 109—First fixing screw of right light shield, 110—Second fixing screw of right light shield, 111—Switcher body, 112—Third fixing screw of interface adapter, 113—Interface adapter;

[0035] 201—Interface adapter mounting female port, 202—Interface adapter first fastening screw hole, 203—Precision slotted hole, 204—Main body first mounting hole, 205—Main body second mounting hole, 206—Precision pin hole, 207—Interface adapter second fastening screw hole CSH2, 208—Top screw hole, 209—Filter switching plate slide, 210—First internal thread, 211—Second internal thread, 212—First fixing screw hole for left light shielding plate, 213—Second fixing screw hole for left light shielding plate, 214—First fixing screw hole for right light shielding plate, 215—Second fixing screw hole for right light shielding plate, 216—Third fastening screw hole for interface adapter;

[0036] 301 - first side expansion screw hole, 302 - first side handle, 303 - first positioning slot, 304 - second positioning slot, 305 - third positioning slot, 306 - second side handle, 307 - second side expansion screw hole, 308 - first filter mounting slot, 309 - fourth positioning slot, 310 - second filter mounting slot, 311 - fifth positioning slot, 312 - sixth positioning slot, 313 - third filter mounting slot;

[0037] 401—third internal thread, 402—interface thread, 403—fastening slot, 404—interface adapter mounting male port;

[0038] 501 - first switching plate movement avoidance slot, 502 - first shading surface, 503 - first fixing screw mounting hole for the left shading plate, 504 - second fixing screw mounting hole for the left shading plate;

[0039] 601—second shading surface, 602—second switching plate movement avoidance groove, 603—first fixing screw mounting hole of the right shading plate, 604—second fixing screw mounting hole of the right shading plate. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be further described below with reference to the accompanying drawings through embodiments, which however do not limit the scope of the present invention in any way.

[0041] Reference Figure 1The camera front-end integrated filter switcher of this embodiment is composed of a switcher body (SRB) 111, a filter switching plate (FSP) 105, an interface adapter (IA) 113, a left light shielding plate (CLS-L) 103, and a right light shielding plate (CLS-R) 108. The filter switching plate 105 is installed from the side of the switcher body 111 in an inserted manner, and is elastically fastened to each other by a ball-shaped set screw (US) 106, so that the relative position of the filter switching plate 105 and the switcher body 111 is adjustable; the interface adapter 113 is installed from the front end of the switcher body 111 in an inserted manner, and is elastically fastened to each other by a first set screw (CS1) 104, a second set screw (CS2) 107, and a third set screw (CS1) 108 of the interface adapter. The fixed screw (CS3) 112 is locked, and after locking, the relative position of the switch body 111 and the interface adapter 113 is in an unadjustable state; the left light shielding plate 103 is installed at the left side of the switch body 111, and is fastened to each other by the first left light shielding plate fixing screw (LS1) 102 and the second left light shielding plate fixing screw (LS2) 101. After fastening, the relative position of the left light shielding plate 103 and the switch body 111 is in an unadjustable state; the right light shielding plate 108 is installed at the right side of the switch body 111, and is fastened to each other by the first right light shielding plate fixing screw (RS1) 109 and the second right light shielding plate fixing screw (RS2) 110. After fastening, the relative position of the right light shielding plate 108 and the switch body 111 is in an unadjustable state.

[0042] Reference Figure 1 、 Figure 2, a filter switching plate slide (FSPS) 209 is provided inside the switch body 111, and the filter switching plate slide 209 can just accommodate the filter switching plate 105 and ensure its smooth sliding; a top screw hole (USH) 208 is provided on the top of the switch body 111, and the top screw hole 208 allows the ball set screw 106 to be installed therein to achieve elastic fastening of the filter switching plate 105; an interface adapter mounting female port (IAIFP) 201 is provided at the front end of the switch body 111, and the female port inner diameter of the interface adapter mounting female port 201 has precision requirements, and its precision can ensure that the interface adapter 113 can be installed with it with extremely small clearance; the The outer peripheral side of the interface adapter mounting female port 201 is provided with a first fixing screw hole (CSH1) 202 of the interface adapter, a second fixing screw hole (CSH2) 207 of the interface adapter and a third fixing screw hole (CSH3) 216 of the interface adapter. The first fixing screw hole 202 of the interface adapter, the second fixing screw hole 207 of the interface adapter and the third fixing screw hole 216 of the interface adapter respectively allow the first fixing screw 104 of the interface adapter, the second fixing screw 107 of the interface adapter and the third fixing screw 112 of the interface adapter to be installed therein, thereby locking the interface adapter 113. The left side of the switch body 111 is provided with a first fixing screw hole (LSH1) 212 of the left light shielding plate and a second fixing screw hole (LSH2) 216 of the left light shielding plate. The fixed screw hole (LSH2) 213, the first fixing screw hole 212 of the left light shielding plate and the second fixing screw hole 213 of the left light shielding plate respectively allow the first fixing screw 102 of the left light shielding plate and the second fixing screw 101 of the left light shielding plate to be installed therein, thereby fastening the left light shielding plate 103; the right side of the switcher body 111 is provided with a first fixing screw hole (RSH1) 214 of the right light shielding plate and a second fixing screw hole (RSH2) 215 of the right light shielding plate, the first fixing screw hole 214 of the right light shielding plate and the second fixing screw hole 215 of the right light shielding plate respectively allow the first fixing screw 109 of the right light shielding plate and the second fixing screw 110 of the right light shielding plate to be installed therein, thereby fastening the right light shielding plate 108 A second internal thread (IT2) 211 is provided on the back side of the switch body 111. The second internal thread 211 is located at the light inlet of the filter in the device, allowing other devices to be connected in series with the device through the second internal thread 211. A first internal thread 210 is provided inside the switch body 111. The first internal thread 210 is located at the light outlet of the filter in the device to reduce the specular reflection effect of light. A precision slot (PS) 203 and a precision pin hole (PPH) 206 are provided at the bottom of the switch body 111. The precision slot 203 and the precision pin hole 206 have precision requirements. This precision can ensure that when the device is installed by pin positioning, the device has extremely high repeatability.The bottom of the switch body 111 is provided with a first body mounting hole (MIH1) 204 and a second body mounting hole (MIH2) 205. The first body mounting hole 204 and the second body mounting hole 205 allow the insertion of bolts to achieve the effect of fastening the device with bolts.

[0043] Reference Figure 1 、 Figure 3 The filter switching plate 105 is provided with a first filter mounting slot (FIS1) 308, a second filter mounting slot (FIS2) 310 and a third filter mounting slot (FIS3) 313 in parallel. The first filter mounting slot 308, the second filter mounting slot 310 and the third filter mounting slot 313 are all threaded through holes with internal threads. The thread parameter is 1.035"-40, which is suitable for installing lenses with a diameter of 1 inch, or other types of lenses can be installed therein by converting to the 1.035"-40 internal thread. The first filter mounting slot 308, the second filter mounting slot 310 and the third filter mounting slot 313 are all threaded through holes with internal threads. The thread parameter is 1.035"-40, which is suitable for installing lenses with a diameter of 1 inch. The second filter mounting slot 310 and the third filter mounting slot 313 have an inclination angle of 3°, which can ensure that the reflected light of the filter will not be reflected back to the original light path; the filter switching board 105 is provided with a first positioning slot (PCS1) 303, a second positioning slot (PCS2) 304, a third positioning slot (PCS3) 305, a fourth positioning slot (PCS4) 309, a fifth positioning slot (PCS5) 311 and a sixth positioning slot (PCS6) 312. 5. The fourth positioning slot 309, the fifth positioning slot 311 and the sixth positioning slot 312 are small notches with a 90° indentation, which cooperate with the ball set screw 106 to realize the elastic fastening of the filter switching plate 105. The first positioning slot 303, the second positioning slot 304, the third positioning slot 305 and the fourth positioning slot 309, the fifth positioning slot 311 and the sixth positioning slot 312 are symmetrically arranged, so that when the filter in the filter switching plate 105 is confirmed to be in the correct direction, it can be used upside down; the filter switching plate 105 is provided with a first side handle (SH1) 302 and the second side handle (SH2) 306, the first side handle 302 and the second side handle 306 are side grooves, which can be pinched to increase the friction of the fingers during use, making the sliding of the filter switching plate 105 easier; the filter switching plate 105 is provided with a first side expansion screw hole (SESH1) 301 and a second side expansion screw hole (SESH2) 307, the first side expansion screw hole 301 and the second side expansion screw hole 307 provide an interface for side-mounted auxiliary switching devices, providing a diversified expansion of filter switching methods.

[0044] Reference Figure 1 、 Figure 2 、 Figure 4The interface adapter 113 is installed by mating an interface adapter mounting male port (IAIPP) 404 with an interface adapter mounting female port 201. The interface adapter mounting male port 404 is a precision-engineered shaft, ensuring that the interface adapter 113 can be mounted with minimal clearance. The front end of the interface adapter 113 is provided with an interface thread (IAT) 402. The interface thread 402 is not fixed in type and can be matched with the thread of the installed camera to achieve camera installation, or matched with the second internal thread 211 to achieve series connection of the camera front-end integrated filter switcher of the present invention. The interface adapter 113 is provided with a fixing slot (TG) 403. The fixing slot 403 can maintain the interface adapter 113 in a locked state within the switcher body 111 via the first interface adapter fixing screw 104, the second interface adapter fixing screw 107, and the third interface adapter fixing screw 112. The interface adapter 113 is provided with a third internal thread (IT3) 401, which can reduce light reflection.

[0045] Reference Figure 1 、 Figure 5 The left light shielding plate 103 is provided with a first switching plate movement avoidance groove (SBMAS1) 501, which can prevent the filter switching plate 105 from colliding with the left light shielding plate 103 body during movement; the left light shielding plate 103 is provided with a first light shielding surface (LSS1) 502, which is a black sandblasted surface. When the incident light path of the filter is an unobstructed spatial light path, the first light shielding surface 502 can ensure that the light will not be projected onto other filters other than the working filter; the left light shielding plate 103 is provided with a first fixing screw mounting hole (LSMH1) 503 for the left light shielding plate and a second fixing screw mounting hole (LSMH2) 504 for the left light shielding plate. The first fixing screw mounting hole 503 for the left light shielding plate and the second fixing screw mounting hole 504 for the left light shielding plate allow the insertion of the first fixing screw 101 for the left light shielding plate and the second fixing screw 102 for the left light shielding plate, thereby achieving the effect of fastening the installation of the device.

[0046] Reference Figure 1 、 Figure 6The right side light shielding plate 108 is provided with a second switching plate movement avoidance groove (SBMAS2) 602, and the second switching plate movement avoidance groove 602 can prevent the filter switching plate 105 from colliding with the right side light shielding plate 108 body during movement; the right side light shielding plate 108 is provided with a second light shielding surface (LSS2) 601, and the second light shielding surface 601 is a black sandblasted surface. When the incident light path of the filter is an unobstructed spatial light path, the second light shielding surface 601 can ensure that the light will not be projected onto other filters other than the working filter; the right side light shielding plate 108 is provided with a right side light shielding plate first fixing screw mounting hole (RSMH1) 603 and a right side light shielding plate second fixing screw mounting hole (RSMH2) 604, and the right side light shielding plate first fixing screw mounting hole 603 and the right side light shielding plate second fixing screw mounting hole 604 allow the right side light shielding plate first fixing screw 109 and the right side light shielding plate second fixing screw 110 to be inserted, thereby achieving the effect of fastening the installation of the device.

[0047] The specific use process of the present invention is:

[0048] Before use, install the required filter into the first filter installation slot 308, the second filter installation slot 310 and the third filter installation slot 313 in the filter switching plate 105, and fix them with a threaded clamp; when in use, use bolts to pass through the first main body installation hole 204 and the second main body installation hole 205 to achieve fixed installation of the switch body 111. When the accuracy of the installation position is required to be high, precise positioning can be achieved by matching the pin with the precision slot hole 203 and the precision pin hole 206; fix the left light shielding plate with the first fixing screw 1 02 and the second fixing screw 101 of the left light shielding plate pass through the first fixing screw mounting hole 503 of the left light shielding plate and the second fixing screw mounting hole 504 of the left light shielding plate respectively and tighten them into the first fixing screw hole 212 of the left light shielding plate and the second fixing screw hole 213 of the left light shielding plate respectively to install and fix the left light shielding plate 103; pass the first fixing screw 109 of the right light shielding plate and the second fixing screw 110 of the right light shielding plate respectively through the first fixing screw mounting hole 603 of the right light shielding plate and the second fixing screw mounting hole 604 of the right light shielding plate And tighten them respectively in the first fixing screw hole 214 of the right light shielding plate and the second fixing screw hole 215 of the right light shielding plate to install and fix the right light shielding plate 108; insert the filter switching plate 105 with the filter installed into the filter switching plate slide 209, and tighten the ball-shaped set screw 106 into the top screw hole 208 until the ball-shaped set screw 106 elastically tightens the filter switching plate 105; screw the interface thread 402 on the interface adapter 113 into the threaded interface of the camera light inlet, and after tightening, install the interface adapter with the male port 40 4. Fully insert the interface adapter into the female mounting hole 201 at the front end of the switch body 111. Then, screw the first, second, and third set screws 104, 107, and 112 of the interface adapter into the first, second, and third set screws 202, 207, and 216 of the interface adapter, respectively, until they are fully tightened. To use a filter or switch filters, push or pull the filter switching plate 105 left or right to switch. To connect the camera front-end integrated filter switcher of the present invention in series, screw the interface thread 402 on the interface adapter 113 into the second internal thread 211 at the rear end of the switch body 111. After tightening, fully insert the interface adapter mounting male port 404 into the female mounting hole 201 at the rear end of the switch body 111 to achieve the series connection.

[0049] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A camera front-end integrated filter switcher, comprising a switcher body, a filter switching plate, an interface adapter, a left shading plate, and a right shading plate, wherein: A filter switching plate slide is provided inside the rear side of the switch body, and a hole adapted to the filter diameter is provided in the middle. An interface adapter mounting female port is provided at the front end of the hole, and an internal thread is provided at the rear end of the hole; a plurality of filter mounting slots are arranged in parallel on the filter switching plate, and the filter switching plate is inserted into the filter switching plate slide from the side of the switch body; an interface thread is provided at the front end of the interface adapter, and an interface adapter mounting male port is provided at the rear end to be inserted into the interface adapter mounting female port of the switch body; the left light shielding plate and the right light shielding plate are respectively installed on the left and right sides of the switch body, and the left light shielding plate and the right light shielding plate are both provided with avoidance grooves for facilitating the movement of the filter switching plate and light shielding surfaces to prevent light from reaching other filters other than the working filter.

2. The camera front-end integrated filter switcher according to claim 1, wherein: A plurality of positioning slots are provided on the top surface of the filter switching plate, or the positioning slots are symmetrically arranged on the top and bottom surfaces of the filter switching plate; a top screw hole is provided on the top of the switcher body, and when the filter switching plate is inserted into the switcher body, a ball-type set screw passes through the top screw hole and falls into the positioning slot to form an elastic fastening.

3. The camera front-end integrated filter switcher according to claim 1, wherein: Three equally spaced fastening screw holes are provided on the outer peripheral side of the interface adapter mounting female port of the switch body, and a fastening slot is provided on the interface adapter mounting male port of the interface adapter. After the interface adapter mounting male port is inserted into the interface adapter mounting female port, the interface adapter is kept locked in the switch body by passing a fastening screw through the fastening screw hole and inserted into the fastening slot.

4. The camera front-end integrated filter switcher according to claim 1, wherein: There are light shielding plate fixing screw holes on the left and right sides of the switch body, and fixing screw mounting holes are provided on the left light shielding plate and the right light shielding plate. The fixing screws are passed through the fixing screw mounting holes and inserted into the light shielding plate fixing screw holes on the left and right sides of the switch body, so that the left light shielding plate and the right light shielding plate are respectively fastened to the left and right sides of the switch body.

5. The camera front-end integrated filter switcher according to claim 1, wherein: An internal thread is provided at the rear end of the hole of the switch body, which is located at the light inlet of the filter and is used to achieve series connection with other devices; and / or, an internal thread is provided inside the hole of the switch body, which is located at the light outlet of the filter and is used to reduce the mirror reflection effect of light.

6. The camera front-end integrated filter switcher according to claim 1, wherein: The interface adapter is provided with an internal thread for reducing the specular reflection effect of light.

7. The camera front-end integrated filter switcher according to claim 1, wherein: The bottom of the switch body is provided with a precision slot hole and a precision pin hole for positioning. At the same time, a main body mounting hole is provided at the bottom of the switch body, and a bolt is inserted into the main body mounting hole to achieve fastening installation.

8. The camera front-end integrated filter switcher according to claim 1, wherein: The filter mounting slot provided on the filter switching plate is a threaded through hole with an internal thread, and the filter mounting slot has an inclination angle of 2 to 3 degrees, ensuring that the reflected light of the filter will not be reflected back into the original light path.

9. The camera front-end integrated filter switcher according to claim 1, wherein: The filter switching plate is provided with side handles and / or side expansion screw holes on both sides or on one side.

10. A method for using the camera front-end integrated filter switcher according to any one of claims 1 to 9, comprising: Install the required filter into the filter installation slot of the filter switching board and secure it; Fix the switch body in the use position, and then install the left and right shading plates on the left and right sides of the switch body respectively; Insert the filter switching board with the filter installed into the filter switching board guide of the switch body; Insert the male interface adapter mounting port of the interface adapter into the female interface adapter mounting port of the switch body and secure; When you need to use a filter or switch filters, push or pull the filter switching plate to move it left or right; When it is necessary to connect multiple camera front-end integrated filter switches in series, the interface thread at the front end of the interface adapter is screwed into the internal thread at the rear end of the switch body located in front of it. After tightening, the interface adapter interface mounting male port is inserted into the interface adapter mounting female port of the switch body located behind it to achieve series connection.

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