Optical lens and method for filtering light rays for taking pictures

Abstract

The application discloses an optical lens and a shooting light filtering method thereof. The optical lens comprises an optical lens group, a shell for assembling the optical lens group, and an optical filter assembly arranged on the front end of the shell. The optical filter assembly is used for providing single or multiple filters for the optical lens group to meet the shooting requirement. The optical filter assembly comprises an optical filter group, a lens barrel for accommodating the optical filter group, and an adjusting ring for adjusting the total amount of light entering the optical lens group. The optical filter group, the adjusting ring and the optical lens group are sequentially connected to form a shooting light path. The filter slots for placing filter lenses are arranged in the lens barrel, so that the filter lenses can be used alone or in combination in the lens barrel, and the single filter effect or the multiple filter superposition effect can be obtained, thereby meeting the requirement of people for various filter effects, improving the applicability and improving the image quality.

Description

Technical Field

[0001] This invention relates to the field of optical imaging technology, specifically to an optical lens and a method for filtering shooting light. Background Technology

[0002] With the rise of the short video and live streaming industry, people have higher and higher requirements for the optical equipment used for shooting, which can not only ensure the clarity of the shooting, but also have the function of beautifying filters.

[0003] To achieve the function of beautification filters, a fixed filter lens is usually added to the lens of the optical device to filter the light entering the lens and achieve the corresponding filtering effect.

[0004] The current method of using fixed filter lenses for beautification operations limits the use of each lens to only one filter mode per shot, resulting in significant limitations and a lack of reasonable avoidance of vignetting caused by the use of filters, leading to poor image quality. Summary of the Invention

[0005] The purpose of this invention is to provide an optical lens and a method for filtering shooting light, so as to solve the technical problems in the prior art where each lens only has a single filtering mode for each shot, which has great limitations and lacks reasonable avoidance of vignetting caused by the use of filters, resulting in poor image quality.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] An optical lens and a method for filtering shooting light thereof, comprising an optical lens group, a housing for assembling the optical lens group, and an optical filter assembly externally mounted on the front end of the housing, wherein the optical filter assembly is used to provide a free combination of one or more filters for the optical lens group to meet shooting needs;

[0008] The optical filter assembly includes an optical filter group, a lens barrel for housing the optical filter group, and an adjustment ring for adjusting the total amount of light entering the optical lens group from the optical filter group. The optical filter group, the adjustment ring, and the optical lens group are connected in sequence to form the shooting optical path. The optical filter group is used to filter the light entering the optical lens group and has single or multiple combined filtering effects. The adjustment ring is used to avoid the vignetting effect caused by the multiple combined filtering effects of the optical filter group on the light entering the optical lens group.

[0009] As a preferred embodiment of the present invention, the optical filter group includes six commonly used filter lenses with different filter effects: ultraviolet filter, polarizing filter, star filter, soft focus filter, medium density filter, and color temperature filter. The six commonly used filter lenses have three usage modes: first, selecting one filter lens from the six filter effects for single use; second, selecting one filter lens from the six filter effects for stacked use; and third, selecting multiple filter lenses from the six filter effects for stacked use.

[0010] In a preferred embodiment of the present invention, the lens barrel is provided with a plurality of lens slots for placing the filter lens. The plurality of lens slots are parallel to each other and do not contact each other. The top of the lens slot is provided with a lens placement opening for placing the filter lens. The filter lens placed in the lens slot is fixedly connected to the lens slot by a connecting buckle. The connecting buckle includes a connecting male buckle provided on the periphery of the filter lens and a connecting female buckle provided on the lens slots located at both ends of the lens placement opening for the connecting male buckle to engage. The connecting male buckle and the connecting female buckle engage or disengage under the action of external force.

[0011] In a preferred embodiment of the present invention, the adjustment ring is disposed inside the lens barrel at the rear end of the lens groove. The adjustment ring contains an adjustment rod, a light-shielding ring band connected to the front end of the adjustment rod, and an adjustment rail for moving the adjustment rod. The bottom of the adjustment rod is provided with a moving block, and the adjustment rail has a spiral moving groove that matches the moving block. The adjustment rod moves in a spiral direction from the outer edge of the adjustment ring towards the inside of the adjustment ring, with the diameter decreasing or increasing. During the movement of the adjustment rod, the light-shielding ring band forms a ring structure inside the adjustment ring, and the center of the ring structure is a circular aperture for the shooting light after passing through the filter lens to pass through.

[0012] In a preferred embodiment of the present invention, a storage cavity for storing the light-shielding ring is provided at the starting end of the moving groove. The storage cavity is provided with a storage roller for winding and storing the light-shielding ring and a self-rotating spring provided at both ends of the storage roller and connected to the wall of the storage cavity. One end of the light-shielding ring is connected to the front end of the adjusting rod, and the other end is connected to the storage roller. The self-rotating spring is used to drive the storage roller to rotate, thereby retracting and winding the light-shielding ring onto the surface of the storage roller.

[0013] As a preferred embodiment of the present invention, a limiting groove is provided on the side of the moving groove for fixing the position of the moving block. The limiting groove is matched with the width of the moving block. Both sides of the limiting groove are equipped with wave-shaped clamping spring plates with both ends fixed on the groove wall of the limiting groove. The moving block is pushed into the space between the wave-shaped clamping spring plates on both sides or pulled out from the space between the wave-shaped clamping spring plates on both sides under the action of external force.

[0014] As a method for filtering shooting light using an optical lens provided by the present invention, it includes:

[0015] S100: Select the single or multiple filter lenses to be used based on the needs of the photos or photographic effects.

[0016] S200. If a single filter lens is used for filtration, the filter lens is inserted into the lens slot along the lens placement opening and fixed to the lens slot by the coupling buckle; if multiple filter lenses are used for filtration, each filter lens is inserted into the lens slot along the lens placement opening in sequence and fixed to the lens slot by the coupling buckle, thus completing the filtration combination of multiple filter lenses in the lens barrel.

[0017] S300: Calculate the size of the vignetting based on the number of filter elements used, and adjust the light-blocking range of the light-blocking ring inside the adjustment circle to reduce the range of shooting light that has been filtered by multiple filter elements entering the optical lens group, thereby removing the light that forms the vignetting range.

[0018] After shooting with S400, restore the adjustment ring to its maximum light-transmitting area and remove the filter from its slot for future use.

[0019] As an optical lens and its shooting light filtering method provided by the present invention, the process of adjusting the light-blocking range by the adjustment ring includes the following steps:

[0020] S301, The adjusting rod drives the moving block to move along the spiral trajectory of the moving groove, and the light-shielding ring band follows the adjusting rod to form a shielding ring structure inside the adjusting ring;

[0021] S302. Based on the range of the vignetting, move the adjustment rod so that the shading ring structure formed by the light-blocking ring in the adjustment ring just blocks the shooting light that forms the vignetting. Then, fix the position of the light-blocking ring by pushing the moving block into the limiting groove.

[0022] S303. When it is necessary to adjust the vignetting range according to the new filter combination, release the moving block from the limiting groove and continue to use the adjusting rod to adjust the occlusion range of the hood.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] This invention, by setting multiple filter slots in the lens barrel for placing filter elements, allows the filter elements to be used individually or in combination within the lens barrel, achieving either a single filter effect or a superimposed effect of multiple filters. This satisfies people's needs for various filter effects, making it more applicable. Furthermore, by employing an adjustment ring, the vignetting range generated by the filter is reasonably avoided, achieving beautifying filter effects without affecting the realism of the image, thus improving the quality of the final image. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the optical lens structure provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the butt buckle structure provided in an embodiment of the present invention;

[0028] Figure 3 This is a top view schematic diagram of the docking fastener structure provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the adjustment ring structure provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the limiting groove structure provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the storage cavity structure provided in an embodiment of the present invention.

[0032] The labels in the diagram represent the following:

[0033] 1-Optical lens group; 2-Housing; 3-Optical filter assembly; 4-Matching buckle; 5-Storage cavity; 6-Limiting groove;

[0034] 301 - Optical filter group; 3011 - Filter element;

[0035] 302-Eye tube; 3021-Lens groove; 3022-Lens mounting opening;

[0036] 303-Adjusting ring; 3031-Adjusting rod; 3032-Light-shielding ring band; 3033-Adjusting rail; 3034-Moving block; 3035-Moving groove;

[0037] 401 - Connecting female buckle; 402 - Connecting female buckle;

[0038] 501 - Storage roller; 502 - Spinning spring;

[0039] 601 - Wave-shaped clamping spring plate. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figure 1-3 As shown, the present invention provides an optical lens and a method for filtering shooting light, including an optical lens group 1, a housing 2 for assembling the optical lens group 1, and an optical filter assembly 3 externally mounted on the front end of the housing 2. The optical filter assembly 3 is used to provide a free combination of one or more filters for the optical lens group to meet shooting needs.

[0042] The optical filter assembly 3 includes an optical filter group 301, a lens barrel 302 for housing the optical filter group 301, and an adjustment ring 303 for adjusting the total amount of light entering the optical lens group 1 from the optical filter group 301. The optical filter group 301, the adjustment ring 303, and the optical lens group 1 are connected in sequence to form the shooting optical path. The optical filter group 301 is used to filter the light entering the optical lens group 1 and has single or multiple combined filtering effects. The adjustment ring 303 is used to avoid the vignetting effect caused by the multiple combined filtering effects of the optical filter group 301 on the light entering the optical lens group 1.

[0043] The lens barrel 302 is located at the front end of the housing 2. It is generally connected to the housing 2 by a threaded connection or a nested connection, which are detachable and can be assembled. After the lens barrel 302 and the housing 2 are assembled, they are on the same straight line. The optical filter group 301 set inside the lens barrel 302 is composed of various filter lenses 3011 that filter the shooting light. Since the lens barrel 302 and the housing 2 are on the same straight line after assembly, the optical filter group 301 inside the lens barrel 302 and the optical lens group 1 inside the housing 2 are on the same straight line. Therefore, the shooting light can enter the optical lens group 1 in parallel through the optical filter group 301, thereby ensuring that the shooting light entering the optical lens is consistent with that when no filter is used. It is always parallel light entering, avoiding the distortion of the shooting image caused by the addition of the optical filter group 301.

[0044] The optical filter group 301 includes six commonly used filter elements 3011: ultraviolet filter, polarizing filter, star filter, soft focus filter, medium density filter, and color temperature filter. The ultraviolet filter filters out stray light from sunlight, making photos clearer. The polarizing filter effectively reduces or eliminates reflections from non-metallic surfaces. The star filter slightly softens images, transforming light sources into numerous starlight points to create a romantic and whimsical atmosphere. The soft focus filter suppresses and enhances facial imperfections. The medium density filter blocks some light without altering the light composition. The color temperature filter changes the color temperature, specifically by decreasing or increasing it. These six filter elements 3011 are the most frequently used in photography or live streaming. You can choose one filter to create a single effect, select several filters for a combined effect, or combine several of the same type of filter to enhance a particular effect. All choices depend on the needs of the image being captured.

[0045] The lens barrel 302 contains multiple lens slots 3021 for placing filter lenses 3011. One, several, or different types of filter lenses 3011 can be inserted into these slots to achieve the desired filtering effect. The multiple lens slots 3021 are parallel and do not contact each other, ensuring that the multiple filter lenses 3011 placed in the slots are parallel and do not touch, guaranteeing that light passes through multiple filters in a straight line and that each filter lens 3011 provides a corresponding filtering effect. The selected filter lens 3011 is placed into the lens slot 3021 through the placement opening 3022 at the top of the slot 3021 according to the desired filtering effect. The fastener 4 is fixedly connected inside the lens slot 3021. The fastener 4 includes a connecting male fastener 401 disposed around the filter lens 3011 and a connecting female fastener 402 disposed on the lens slot 3021 located at both ends of the lens opening 3022 for the connecting male fastener 401 to fasten. By pressing the connecting male fastener 401 firmly onto the connecting female fastener 402, the position of the filter lens 3011 in the lens slot 3021 is fixed, preventing the position from shifting due to the shaking of the lens barrel 302 during the shooting process, which would cause the angle of the shooting light passing through it to be deflected, resulting in shooting distortion. When removing the filter lens 3011, the connecting male fastener 401 is forcefully separated from the connecting female fastener 402, and the filter lens 3011 is taken out from the lens slot 3021 from the lens opening 3022.

[0046] like Figure 4-6As shown, this embodiment further provides an adjustment ring 303 located at the rear end of the lens groove 3021 inside the lens barrel 302 to prevent the shooting light after being filtered by multiple optical filter lenses 3011 from entering the optical lens group 1 and causing vignetting. The adjustment ring 303 can adjust the range of light entering the optical lens group 1 from the optical filter group 301. The phenomenon of darkening at the four corners of the captured image is called vignetting.

[0047] The adjusting ring 303 contains an adjusting rod 3031, a light-shielding ring 3032 connected to the front end of the adjusting rod 3031, and an adjusting rail 3033 for the adjusting rod 3031 to move. A moving block 3034 is located at the bottom of the adjusting rod 3031. The moving block 3034 and the adjusting rod 3031 are integrally formed, thus ensuring that the moving block 3034 and the adjusting rod 3031 move synchronously and have the same trajectory. The adjusting rail 3033 has a spiral moving groove 3035 that matches the moving block 3034. One end of the adjusting rod 3031 moves with the moving block 3034 in the moving groove 3035, while the other end extends outside the adjusting ring 303 for external gripping to drive the movement of the moving block 3034. The adjustment ring 303 has a slot on its body for the adjustment rod 3031 to rotate. When the adjustment rod 3031 rotates in the same direction on the slot, it gives the moving block 3034 a driving force so that its movement in the moving slot 3035 is a spiral from the outer edge of the adjustment ring 303 towards the inside of the adjustment ring 303 with the diameter decreasing or increasing. At this time, the light-shielding ring 3032 forms a ring structure with a gradually increasing or decreasing area inside the adjustment ring 303 during the movement of the adjustment rod 3031. The light-shielding ring 3032 of the ring structure can block the light area that forms a dark corner. The circular aperture reserved in the middle of the ring structure allows the light without dark corners after passing through the filter lens 3011 to enter the optical lens group 1 behind.

[0048] The blocking range of the light-shielding ring band 3032 is determined by the number of filter lenses 3011 used. The area of ​​the annular structure formed by the light-shielding ring band 3032 is variable. To block the vignetting range caused by the various numbers of filter lenses 3011, the light-shielding ring band 3032 needs to be lengthened or shortened as needed. Therefore, a storage cavity 5 for storing the light-shielding ring band 3032 is provided at the starting end of the moving groove 3035. The storage cavity 5 is provided with a storage device for winding and storing the light-shielding ring band 3032. The roller 501 and the self-rotating springs 502, which are connected to the walls of the storage cavity 5 at both ends of the storage roller 501, are included. One end of the light-shielding ring 3032 is connected to the front end of the adjusting rod 3031, and the other end is connected to the storage roller 501. When the adjusting rod 3031 moves with the moving block 3034 in the direction of decreasing inner diameter of the adjusting ring 303, the light-shielding ring 3032 also gradually extends with the adjusting rod 3031, forming a ring structure with a gradually increasing area, so that the light-shielding ring on the storage roller... When 3032 is taut, the light-shielding ring 3032 is pulled out from the storage roller 501, causing the storage roller 501 to roll. During the rolling of the storage roller 501, the self-rotating springs 502 connected at both ends rotate, generating a torque opposite to the pulling direction of the light-shielding ring 3032, aiming to restore its original shape. When the adjusting rod 3031 moves with the moving block 3034 in the direction of increasing inner diameter of the adjusting ring 303, the light-shielding ring 3032 also moves with the adjusting rod 3031. 31. Gradually reduce the size of the large-area annular structure. At this time, the required length of the light-shielding ring 3032 is reduced. The light-shielding ring 3032 released by the annular structure makes the light-shielding ring 3032 on the collecting roller loose. Then the force of the light-shielding ring 3032 on the collecting roller disappears. At this time, the self-rotating spring 502 rotates under the action of the torsional force. The collecting roller rotates under the drive of the self-rotating spring 502 and retracts the light-shielding ring 3032 and wraps it around the surface of the collecting roller 501.

[0049] To prevent the ring structure formed by the light-shielding ring 3032 from changing its area due to external movement during shooting, a limiting groove 6 is provided on the side of the moving groove 3035 to fix the position of the moving block 3034. The limiting groove 6 matches the width of the moving block 3034, allowing the moving block 3034 to enter the limiting groove 6. Both sides of the limiting groove 6 are equipped with wave-shaped clamping spring plates 601 with both ends fixed to the groove wall of the limiting groove 6. The wave-shaped clamping spring plates 601 on both sides are arranged opposite each other. The troughs of the wave-shaped clamping spring plates 601 on both sides form a groove to accommodate and clamp the moving block 3034, while the crests on both sides facing the opening of the limiting groove 6 form a latch to prevent the moving block 3034 from falling out. The elastic wave-shaped clamping spring plates 601 on both sides move away from each other when the moving block 3034 is inserted or pulled out, thereby opening the latch to allow the moving block 3034 to be inserted or pulled out of the limiting groove 6.

[0050] Example 2:

[0051] Based on the above-described optical lens structure, this invention further provides a method for filtering shooting light using an optical lens, the specific steps of which include:

[0052] S100: Select the single or multiple filter lenses to be used based on the needs of the photos or photographic effects.

[0053] S200. If a single filter lens is used for filtration, the filter lens is inserted into the lens slot along the lens placement opening and fixed to the lens slot by the coupling buckle; if multiple filter lenses are used for filtration, each filter lens is inserted into the lens slot along the lens placement opening in sequence and fixed to the lens slot by the coupling buckle, thus completing the filtration combination of multiple filter lenses in the lens barrel.

[0054] S300: Calculate the size of the vignetting based on the number of filter elements used, and adjust the light-blocking range of the light-blocking ring inside the adjustment circle to reduce the range of shooting light that has been filtered by multiple filter elements entering the optical lens group, thereby removing the light that forms the vignetting range.

[0055] After shooting with S400, restore the adjustment ring to its maximum light-transmitting area and remove the filter from its slot for future use.

[0056] This method can meet various shooting filter needs by selecting to insert a single filter lens, several identical filter lenses, or several filter lenses into the lens slot. By adjusting the area of ​​the ring structure formed by the light-blocking ring in the adjustment circle, the ring structure blocks the dark corner light range caused by the combination of multiple filter lenses, allowing normal light to enter the optical lens group through the aperture in the middle of the ring structure, thus avoiding image distortion.

[0057] Based on the above-described optical lens and its method for filtering shooting light, the present invention further provides a process for adjusting the light-blocking range using an adjustment ring, comprising the following steps:

[0058] S301, The adjusting rod drives the moving block to move along the spiral trajectory of the moving groove, and the light-shielding ring band follows the adjusting rod to form a shielding ring structure inside the adjusting ring;

[0059] S302. Based on the range of the vignetting, move the adjustment rod so that the shading ring structure formed by the light-blocking ring in the adjustment ring just blocks the shooting light that forms the vignetting. Then, fix the position of the light-blocking ring by pushing the moving block into the limiting groove.

[0060] S303. When it is necessary to adjust the vignetting range according to the new filter combination, release the moving block from the limiting groove and continue to use the adjusting rod to adjust the occlusion range of the hood.

[0061] This method controls the increase or decrease of the area of ​​the ring structure by moving the rod to extend and shorten the length of the light-shielding ring within the adjustment circle. This is to accommodate the constantly changing vignetting range caused by changing filters during shooting, and the use of a limiting groove to fix the position of the moving block ensures that the area of ​​the ring structure is not affected by external movement during shooting.

[0062] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An optical lens, characterized in that: It includes an optical lens group (1), a housing (2) for assembling the optical lens group (1), and an optical filter assembly (3) externally mounted on the front end of the housing (2). The optical filter assembly (3) is used to provide a free combination of one or more filters for the optical lens group to meet shooting needs. The optical filter assembly (3) includes an optical filter group (301), a lens barrel (302) for housing the optical filter group (301), and an adjustment ring (303) for adjusting the total amount of light entering the optical lens group (1) from the optical filter group (301). The optical filter group (301), the adjustment ring (303), and the optical lens group (1) are connected in sequence to form a shooting optical path. The optical filter group (301) is used to filter the light entering the optical lens group (1) and has single or multiple combined filtering effects. The adjustment ring (303) is used to avoid the vignetting effect caused by the multiple combined filtering effects of the optical filter group (301) on the light entering the optical lens group (1). The lens barrel (302) is provided with a plurality of lens slots (3021) for placing filter lenses (3011). The plurality of lens slots (3021) are parallel to each other and do not contact each other. The top of the lens slot (3021) is provided with a lens placement opening (3022) for inserting the filter lens (3011). The filter lens (3011) inserted into the lens slot (3021) is fixedly connected to the lens slot (3021) by a connecting buckle (4). The connecting buckle (4) includes a connecting sub-buckle (401) provided on the periphery of the filter lens (3011) and a connecting female buckle (402) provided on the lens slots (3021) located at both ends of the lens placement opening (3022) for the connecting sub-buckle (401) to fasten. The connecting sub-buckle (401) and the connecting female buckle (402) are fastened or separated under the action of external force. The adjusting ring (303) is located inside the lens barrel (302) at the rear end of the lens groove (3021). The adjusting ring (303) contains an adjusting rod (3031), a light-shielding band (3032) connected to the front end of the adjusting rod (3031), and an adjusting rail (3033) for moving the adjusting rod (3031). A moving block (3034) is located at the bottom of the adjusting rod (3031), and the adjusting rail (3033) has an opening corresponding to the moving block (3034). The matching spiral moving groove (3035) is used. The moving direction of the adjusting rod (3031) in the moving groove (3035) is spiraling from the outer frame of the adjusting ring (303) towards the inside of the adjusting ring (303) with the diameter decreasing or increasing. The light shielding ring (3032) forms a ring structure inside the adjusting ring (303) during the movement of the adjusting rod (3031). The center of the ring structure is a circular aperture for the shooting light after passing through the filter lens (3011) to pass through.

2. An optical lens according to claim 1, characterized in that: The optical filter group (301) includes six commonly used filter lenses (3011) with different filter effects: ultraviolet filter, polarizing filter, star filter, soft light filter, medium density filter, and color temperature filter. The six commonly used filter lenses (3011) have three usage modes: first, select one filter lens (3011) from the six filter effects for single use; second, select one filter lens (3011) from the six filter effects for stacked use; and third, select multiple filter lenses (3011) from the six filter effects for stacked use.

3. An optical lens according to claim 1, characterized in that: At the starting end of the moving groove (3035), there is a storage cavity (5) for storing the light-shielding ring band (3032). Inside the storage cavity (5), there is a storage roller (501) for winding and storing the light-shielding ring band (3032) and a spin spring (502) connected to the wall of the storage cavity (5) at both ends of the storage roller (501). One end of the light-shielding ring band (3032) is connected to the front end of the adjusting rod (3031), and the other end is connected to the storage roller (501). The spin spring (502) is used to drive the storage roller (501) to rotate so as to recycle the light-shielding ring band (3032) and wind it around the surface of the storage roller (501).

4. An optical lens according to claim 1, characterized in that: The side of the moving groove (3035) is provided with a limiting groove (6) for fixing the position of the moving block (3034). The limiting groove (6) matches the width of the moving block (3034). Both sides of the limiting groove (6) are equipped with wave-shaped clamping spring plates (601) with both ends fixed on the groove wall of the limiting groove (6). The moving block (3034) is pushed into the space between the wave-shaped clamping spring plates (601) on both sides under the action of external force, or pulled out from the space between the wave-shaped clamping spring plates (601) on both sides.

5. A method for filtering shooting light using an optical lens according to any one of claims 1 to 4, characterized in that, include: S100: Select the single or multiple filter lenses to be used based on the needs of the photos or photographic effects. S200. If a single filter lens is used for filtration, the filter lens is inserted into the lens slot along the lens placement opening and fixed to the lens slot by the coupling buckle; if multiple filter lenses are used for filtration, each filter lens is inserted into the lens slot along the lens placement opening in sequence and fixed to the lens slot by the coupling buckle, thus completing the filtration combination of multiple filter lenses in the lens barrel. S300: Calculate the size of the vignetting based on the number of filter elements used, and adjust the light-blocking range of the light-blocking ring inside the adjustment circle to reduce the range of shooting light that has been filtered by multiple filter elements entering the optical lens group, thereby removing the light that forms the vignetting range. After shooting with S400, restore the adjustment ring to its maximum light-transmitting area and remove the filter from its slot for future use.

6. The method for filtering shooting light using an optical lens according to claim 5, characterized in that, The process of adjusting the shading range using the adjustment ring includes the following steps: S301, The adjusting rod drives the moving block to move along the spiral trajectory of the moving groove, and the light-shielding ring band follows the adjusting rod to form a shielding ring structure inside the adjusting ring; S302. Based on the range of the vignetting, move the adjustment rod so that the shading ring structure formed by the light-blocking ring in the adjustment ring just blocks the shooting light that forms the vignetting. Then, fix the position of the light-blocking ring by pushing the moving block into the limiting groove. S303. When it is necessary to adjust the vignetting range according to the new filter combination, release the moving block from the limiting groove and continue to use the adjusting rod to adjust the occlusion range of the hood.

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