Insertion filter holder for lens

Abstract

Apparatus and system aspects are disclosed herein for detachable filter holders. An aspect includes a camera lens body, camera lenses positioned within the camera lens body, a slot along the camera lens body between the camera lenses, a guide mechanism positioned in the slot, and a removable filter holder positioned in the slot along the guide mechanism. A removable filter holder of this aspect includes an upper flange partially contacting a camera lens body via a bottom surface, a perimeter gasket coupled to the bottom surface of the upper flange, and a shaft coupled to the bottom surface of the upper flange. The shaft of this aspect includes a removable filter, a filter seat configured to hold the removable filter, and an arm connecting the upper flange to the filter seat.

Description

Background Technology

[0001] A camera is a device used to capture and record real-life images in the form of photographs and / or videos. To capture and record such images, a camera can consist of a camera body and a camera lens. The camera lens focuses light reflected from objects in the real world onto an image sensor in the camera body. The image sensor is an electronic device that converts the focused light into electronic signals representing a digital image. This image can then be used to generate frames in a photograph or a high-quality video stream. The camera body may also include controls, circuitry, and a processor to execute computer-readable instructions for controlling various operations of the camera, as well as storage devices including memory for saving the digital images. Some cameras can receive power from an external power source (e.g., via a power cord connected to a power outlet), while others can receive power from an internal power source (e.g., a built-in or attachable battery pack).

[0002] A camera lens can be a single lens element or an assembly of lenses, wherein the lens assembly may contain one or more lens groups. Camera lenses generally consist of convex and / or concave optical components used to bend incoming light in a specific manner, such as toward a single focal point. Within the lens assembly, the cumulative effect of the various lens elements or lens groups allows light to bend in a specific way. The type of camera lens used can determine camera characteristics such as aperture range, depth of field, or focusing distance. Other camera components may include filters or focusing mechanisms.

[0003] Camera filters can be made of glass or another material (such as gelatin) and can be used for a variety of purposes, such as minimizing glare, enhancing certain colors, or reducing the amount of light entering the camera. One such type of filter is the low-pass filter. A low-pass filter is a birefringent crystal that contains several layers of different shades of components used to eliminate moiré fringes (e.g., interference patterns) through processes such as splitting incoming light to blur image details. Some filters, such as low-pass filters, are attached to the back of the camera lens and the front of the image sensor and are designed according to the specifications of a specific camera body (i.e., not the camera lens or camera lens combination). Such filter placement and design standards result in size-constrained, non-accessible, and inflexible camera systems. Summary of the Invention

[0004] Among the aspects presented in this article, cameras, camera lenses, and detachable filter holders can provide a versatile optical window that allows for the application of a variety of camera filters to cameras with large image sensors in an accessible and efficient manner.

[0005] In one aspect, an example device for a removable filter holder is described. This example device includes a camera lens body, an upper flange that partially contacts the camera lens body via a bottom surface, a peripheral washer coupled to the bottom surface of the upper flange, and a shaft coupled to the bottom surface of the upper flange and configured to extend along a guide mechanism into a groove in the camera lens body. The shaft of this example device includes a removable filter, a filter holder configured to hold the removable filter, and an arm connecting the upper flange to the filter holder.

[0006] In another aspect, an example system for a camera having a removable filter holder is described. The example system includes a camera lens body, one or more camera lenses positioned within the camera lens body, one or more slots along the camera lens body between the one or more camera lenses, one or more guide mechanisms positioned in the one or more slots, and one or more removable filter holders positioned along the one or more guide mechanisms in the one or more slots. The one or more removable filter holders of this example system include an upper flange that partially contacts the camera lens body via a bottom surface, a peripheral washer coupled to a bottom surface of the upper flange, and a shaft coupled to the bottom surface of the upper flange. The shaft of this example system includes a removable filter, a filter holder configured to hold the removable filter, and an arm connecting the upper flange to the filter holder.

[0007] In another aspect, an example device for a removable filter holder is described. This example device includes a shaft extending into a groove in a camera lens body, a filter holder coupled to an end of the shaft, and a removable filter located within the filter holder.

[0008] Further features and advantages, as well as the structure and operation of each aspect, are described in detail below with reference to the accompanying drawings. It should be noted that the specific aspects described herein are not intended to be limiting. Such aspects are presented herein for illustrative purposes only. Additional aspects will be apparent to those skilled in the art based on the teachings contained herein. Attached Figure Description

[0009] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate various aspects of this disclosure and, together with the description, further serve to explain the principles of this disclosure and enable those skilled in the art to make and use this disclosure.

[0010] Figure 1 These are illustrations of an example camera system based on some aspects of this disclosure.

[0011] Figure 2A-2B This is an illustration of a camera lens without a lens housing, based on some aspects of this disclosure.

[0012] Figure 3 This is an illustration of a camera lens without a lens housing or lens body, according to some aspects of this disclosure.

[0013] Figure 4 This is an illustration of a removable filter holder according to some aspects of this disclosure.

[0014] Figures 5A-5C This is an illustration of a removable filter holder according to some aspects of this disclosure.

[0015] In the accompanying drawings, the same reference numerals generally indicate the same or similar elements. Furthermore, generally, the leftmost (one or more) digits of the reference numerals identify the figure in which that reference numeral first appears.

[0016] Various aspects of this disclosure will be described with reference to the accompanying drawings. Detailed Implementation

[0017] This document provides aspects of devices, apparatuses, and / or systems, and / or combinations and sub-combinations thereof, for removable filter holders, which can provide a versatile optical window capable of applying a variety of camera filters to cameras with large image sensors.

[0018] Camera filters can be made of glass or another material (such as gelatin) and can help alter light in various ways. For example, low-pass filters can be used to eliminate moiré fringes (e.g., interference patterns). Camera filters (such as low-pass filters made of birefringent crystals) are typically attached behind the camera lens and close to the image sensor. In these configurations, the thickness of the low-pass filter has a significant impact on the resulting image due to the principle of the principal ray angle. For example, if light enters the center of the camera lens and passes through a low-pass filter with a thickness of 3 mm, the light travels only 3 mm. However, light can also enter from the edge of the camera lens. At the most extreme edges, light approaches from the principal ray angle. Light passing through a 3 mm thick low-pass filter along the principal ray angle will actually travel a distance greater than 3 mm (e.g., 4 mm). This additional travel distance affects how the low-pass filter works and disperses the outgoing light, resulting in color fringing (i.e., chromatic aberration). In traditional configurations where a low-pass filter is attached behind the camera lens and in front of the image sensor, a certain amount of color fringing must typically be accepted in the resulting image. This is especially true for large image sensors (i.e., large cameras). Furthermore, in traditional configurations, the low-pass filter must be approximately the same size as the image sensor to filter all incoming light before it reaches the sensor. This means that such low-pass filters are typically designed to the specifications of a specific camera body (i.e., not the camera lens). In fact, as the size of image sensors (e.g., camera bodies) increases, implementing low-pass filters with traditional configurations becomes increasingly challenging.

[0019] In cameras with large image sensors, there are four technical challenges associated with implementing certain camera filters, such as low-pass filters. First, positioning the low-pass filter behind the camera lens and in front of the image sensor makes the resulting image particularly susceptible to negative chromatic aberration from light entering at the principal ray angle. Second, low-pass filters made of birefringent crystals cannot be manufactured to acceptable defect specifications for large image sensors, and therefore cannot be implemented in large cameras under current design. Third, even if a camera filter could be manufactured to work with a large image sensor, it would be designed for that specific camera body (i.e., the image sensor) and have limited alternative uses. Fourth, because camera filters are designed for that specific camera body and are typically located within the camera body, removing the camera filter for maintenance or replacement can be a cumbersome process, requiring disassembly of the camera body.

[0020] This paper addresses these technical challenges using innovative lens-based detachable filter holders, located within the camera lens and designed to fit the specifications of the camera lens and / or camera body. For example, instead of a low-pass filter located behind the camera lens and in front of the image sensor, the low-pass filter will now reside within a multi-functional optical window inside the camera lens. This innovative approach repositions the filter from the camera body or camera mount to one or more various optical components within the camera lens.

[0021] This paper offers various benefits. For example, positioning the low-pass filter within the camera lens (i.e., closer to the incoming light) reduces the presence of color fringing. In other words, light entering even at the edge of the camera lens will travel through the low-pass filter at a smaller angle, where the thickness of the low-pass filter has a smaller impact. In another example, camera filters (such as low-pass filters made of birefringent crystals) no longer need to be as large as the image sensor. In yet another example, the camera filter is now removable from the camera lens. In other words, the filter can be easily removed for adjustment, the filter in the camera lens can be removed and replaced with a different filter for the same camera lens, or the filter can be removed from one lens and inserted into another lens used with the same camera body. Therefore, the innovative approach of a lens-based removable filter holder located within the camera lens and designed according to the specifications of the camera lens and / or camera body solves the aforementioned technical problems by easily enabling a variety of camera filters with cameras having large image sensors.

[0022] Figure 1This is an illustration of an example camera system 100 according to some aspects of this disclosure. The camera system 100 may include a camera body 102, a handle 104, a power supply 106, a camera lens 108, and various other camera system components such as a mounting plate 114. The camera lens 108 may include a camera lens housing 110, one or more camera lenses 112, and various other camera lens components, such as a removable filter holder 118 configured to hold a camera filter for altering light 116 in various ways (described below with reference to Figures 2-5C).

[0023] The camera body 102 may include an image sensor for converting light 116 into electronic signals representing a digital image after it has been reflected from a real-world object through one or more camera lenses 112 and camera filters. The camera body 102 of the camera system 100 may be large, having an image sensor larger than 70 mm on any one or two edges.

[0024] The camera body 102 may include a handle 104 that allows a user to support, carry, or otherwise physically manipulate the camera system 100. In some aspects, a power source 106 may be detachably coupled to the camera body 102 and configured to provide sufficient voltage to power the operation of the camera body 102. For example, the power source 106 may be a removable battery pack that provides DC voltage to the camera body 102. In another example, the power source 106 may be a power outlet that provides AC voltage via a plug and wire that can be connected to the camera body 102. In other aspects, the power source 106 may be integrated into the camera body 102 and cannot be removed by the user. For example, the power source 106 may be a disposable or rechargeable battery located within the camera body 102. The camera lens housing 110 may provide mechanical and / or protective support to components inside the camera lens 108, such as one or more camera lenses 112.

[0025] Figure 2A-2B This is an illustration of a camera lens 108 without the camera lens housing 110, according to some aspects of this disclosure. When the outermost cover (e.g., camera lens housing 110) is removed from the camera lens 108 of the camera system 100, certain internal mechanisms are visible, such as... Figure 2A-2B As shown in the image. Figure 2A The illustration shows a camera lens 108 without the removable filter holder 118 in place. Figure 2B This is an illustration of a camera lens 108 with a removable filter holder 118 in place.

[0026] Figure 2AThe diagram also illustrates a camera lens body 202, a camera lens 112, and one or more slots 206. The camera lens body 202 may be a component of the camera lens 108. The camera lens body 202 may be a cylinder, a right-angled prism, or any other three-dimensional geometry as will be recognized by those skilled in the art. The camera lens body 202 may extend along an axis formed by the center point of a cross-sectional plane of the geometry (e.g., the axis is formed by the center point of a cross-sectional circle of a cylinder). The camera lens body 202 may be made of metal, a metal alloy, plastic, or any other material as will be recognized by those skilled in the art. The camera lens body 202 may provide structural support for components inside the camera lens 108. The camera lens body 202 may also provide protection for components inside the camera lens 108, including protection against dust or debris. One such component inside the camera lens 108 that may be supported or protected by the camera lens body 202 is the camera lens 112.

[0027] Camera lens 112 can be a single lens element or one or more lens groups in a lens assembly. For example, when light passes through a convex element, it bends inward toward the center (i.e., focal point) (i.e., refracts). Concave elements can be combined with convex elements to help refract toward the center point (i.e., overcome aberrations). Such a combination of convex and concave elements can be considered a lens group. And various lens groups can be combined into a camera assembly, where each lens group achieves various desired effects (e.g., focusing, color correction, etc.). One or more single lens elements or one or more lens groups can be positioned in front of the removable filter holder 118 (e.g., between the image sensor and slot 206), and one or more single lens elements or one or more lens groups can be positioned behind the removable filter holder 118 (e.g., between the light-receiving surface of camera lens 108 and slot 206).

[0028] The slot 206 may be one or more openings in the camera lens body 202, visible from the outside of the camera system 100 when the removable filter holder 118 is not in place. The removable filter holder 118 is inserted into the slot 206. The slot 206 may have an insertion shaft 406 (see below). Figure 4(Described in detail) Dimensions. The slot 206 may create one or more openings between camera lenses 112 (i.e., front and / or rear). As shown in Figures 2-3, the slot 206 may be positioned perpendicular to the axis so as to be parallel to the cross-sectional plane of the geometry. For example, the slot 206 may be parallel to the circular cross-section of the cylindrical camera lens body 202. Within one or more openings of the slot 206 may be one or more guide mechanisms for aligning the removable filter holder 118 within the slot 206 and parallel to the cross-sectional plane of the geometry. The guide mechanisms may be made of metal, metal alloys, plastic, or any other material as will be recognized by those skilled in the art. The guide mechanisms may include a track and roller system. For example, the guide mechanisms may include two guide tracks located on either side of the slot 206 and two end caps located at the base of these two guide tracks. In this example, the guide mechanisms may also require the removable filter holder 118 to have two rollers that move along the two guide tracks into the slot 206 and stop at the two end caps at the base of the two guide tracks.

[0029] Figure 3 This is an illustration of a camera lens 108 without a camera lens housing 110 (e.g., outermost cover) or camera lens body 202, according to some aspects of this disclosure. Figure 3 As shown, camera lens 112 can be positioned within camera lens body 202 and along an axis. Camera lens 112 can be positioned perpendicular to the axis to be parallel to the cross-sectional plane of the geometry. For example, camera lens 112 can be parallel to the circular cross-section of a cylindrical camera lens body 202. Camera lens 112 can be positioned in front of slot 206 (e.g., between image sensor and slot 206) and / or behind slot 206 (e.g., between light-receiving surface of camera lens 108 and slot 206).

[0030] Figure 4 This is an illustration of a removable filter holder 118 according to some aspects of this disclosure. The removable filter holder 118 can be inserted into a slot 206 along one or more guide mechanisms. The removable filter holder 118 may include an upper flange 402, a bottom surface 404, and a shaft 406. The shaft 406 may also include a removable filter 408, a filter seat 410, and an arm 412. The removable filter holder 118 may also include one or more fastening mechanisms 414 and / or peripheral washers 416.

[0031] Figures 5A-5C The illustration also shows a removable filter holder 118 based on some aspects of this disclosure. Figure 5A This is a top view of the removable filter holder 118. Figure 5B This is a front view of the removable filter holder 118 and also shows details of the filter holder 410. Figure 5CThis is a side view of the removable filter holder 118.

[0032] The upper flange 402 can be made of metal, metal alloy, plastic, or any other material as will be recognized by those skilled in the art. The upper flange 402 can be shaped according to the geometry of the camera lens body 202. For example, if the camera lens body 202 is a cylinder, then the flange 402 can be in the form of an arc having the same radius as the curved surface of the camera lens body 202. The upper flange 402 can be shaped in a form ideally suited for gripping.

[0033] The upper flange 402 has a bottom surface 404. The bottom surface 404 can be a flat surface also shaped according to the geometry of the camera lens body 202. For example, if the camera lens body 202 is a cylinder, then both the flange 402 and the bottom surface 404 can be in the form of an arc having the same radius as the curved surface of the camera lens body 202. The bottom surface 404 can be larger than the opening of the groove 206, thereby partially contacting the camera lens body 202 by overlapping the bottom surface 404 on the edge of the groove 206. The bottom surface 404 can include a peripheral washer 416 coupled to the periphery of the bottom surface 404. The bottom surface 404 can include a groove along its periphery, wherein the peripheral washer 416 is coupled to the bottom surface 404 within the groove. When the bottom surface 404 is larger than the opening of the groove 206 and includes the peripheral washer 416, the internal opening of the groove 206 is sealed from any external conditions such as dust or debris. The peripheral gasket 416 may be made of rubber, silicone, plastic, or any other material as will be recognized by those skilled in the art. The peripheral gasket 416 may be reversibly compressible into any blank space between the bottom surface 404 and the groove 206.

[0034] The upper flange 402 may include a fastening mechanism 414. The fastening mechanism 414 may be used to secure the upper flange 402, and thus the removable filter retainer 118, to the camera lens body 202. The fastening mechanism 414 may include one or more threaded screws and threaded holes, or any other fastening mechanism that a person skilled in the art will recognize. For example, the fastening mechanism 414 may include two threaded screws that pass through two threaded holes at each end of the upper flange 402 and into two threaded holes in the camera lens body 202.

[0035] Shaft 406 may extend from the bottom surface 404 of the upper flange 402. Shaft 406 is the portion of the removable filter holder 118 that extends into the opening of the slot 206. Shaft 406 may include a removable filter 408, a filter holder 410, and an arm 412. The removable filter 408 may be a low-pass filter, a birefringent crystal, an LC shutter, a diffractive optical filter, a motorized rotating filter, an aperture shape, or any other camera filter as will be recognized by those skilled in the art, or any combination thereof. The removable filter 408 may be of a type configured to be rotatable within the filter holder 410. For example, the removable filter 408 may have an aperture shape that allows the perspective view to be changed when rotated. In other examples, the detachable filter 408 may be a polarizing filter, a gradient filter (e.g., increasing density from one edge to the other), or a random light dispersion filter that produces a special effect or time-varying anti-aliasing effect when rapidly rotated. The rotatable detachable filter 408 may also be used in a coupled manner in an image processing system, where rotation and / or X-axis / Y-axis position are actively moved in a manner corresponding to the image. The detachable filter 408 may be a combination of a rotatable filter and a non-rotatable filter. The detachable filter 408 may be a cylinder. For example, the detachable filter 408 may have a diameter of 58 mm and a thickness between 3 and 8 mm. The detachable filter 408 may be a right-angled prism or any other three-dimensional geometry as will be recognized by those skilled in the art.

[0036] When both the removable filter 408 and the filter holder 410 are external to the camera system 100, the removable filter 408 can be placed in the filter holder 410. The filter holder 410 can be any component used to hold the removable filter 408 in the plane of incoming light. More specifically, see [reference needed]. Figure 5BLet's understand the filter holder 410. The filter holder 410 may include a platform 502 having a central opening 504, a recess 506, and at least one fastening mechanism 508. The removable filter 408 may be placed on or inside the platform 502. The platform 502 may be a cylinder, a right-angled prism, or any other three-dimensional geometry as will be recognized by those skilled in the art. The central opening 504 allows incoming light to pass through the removable filter holder 118 and through the removable filter 408. The central opening 504 may be circular. For example, the central opening 504 may have a diameter of 51 mm. The central opening 504 may be rectangular or any other geometry as will be recognized by those skilled in the art. The removable filter 408 may be placed inside the platform 502 via the recess 506. The recess 506 may be a lug formed by removing material from the inner periphery of the platform 502. The periphery of the removable filter 408 may contact the recess 506. When the removable filter 408 is inserted into the recess 506, the removable filter 408 can be flush with the surface of the shaft 406. In other words, the thickness of the removable filter 408 can be the same as the amount of material removed from the inner periphery of the platform 502 to form the recess 506. The removable filter 408 can be secured to or within the platform 502 by a fastening mechanism 508. For example, the removable filter 408 can be secured inside the recess 506 by a fastening mechanism 508. The fastening mechanism 508 can be a fastener, a tension latch, or any other fastening mechanism as will be recognized by those skilled in the art.

[0037] Go back to reference Figure 4 Arm 412 connects bottom surface 404 to filter holder 410. Arm 412 can be made of metal, metal alloy, plastic, or any other material as will be recognized by those skilled in the art. Arm 412 has dimensions that allow it to be inserted into slot 206. Arm 412 can be configured to interact with a guide mechanism in slot 206. For example, each side of arm 412 may have rollers that allow the removable filter holder 118 to be inserted into slot 206 along the guide mechanism (i.e., the guide mechanism configured as a track and roller system). Arm 412 may have a length that positions the center point of filter holder 410, and therefore the center point of removable filter 408, in a line with the axis of camera lens body 202. Aligning arm 412 with the center point in line with the axis of camera lens body 202 provides an origin through which all components of camera lens 108 can be aligned.

[0038] It should be recognized that the Detailed Description section, and not any other section, is intended to interpret the claims. The other sections may set forth one or more exemplary aspects contemplated by the inventors and are therefore not intended to limit this disclosure or the appended claims in any way.

[0039] While this disclosure describes exemplary aspects for exemplary fields and applications, it should be understood that this disclosure is not limited thereto. Other aspects and modifications thereof are possible and are within the scope and spirit of this disclosure. For example, but without limiting the generality of this paragraph, the aspects are not limited to the software, hardware, firmware, and / or entities shown in the figures and / or described herein. Furthermore, the aspects (whether or not explicitly described herein) have significant utility for fields and applications beyond the examples described herein. Any dimension provided herein is exemplary, and other dimensions are possible, as will be recognized by those skilled in the art.

[0040] This document has described various aspects with the aid of functional building blocks that illustrate the implementation methods of specified functions and their relationships. For ease of description, the boundaries of these functional building blocks have been arbitrarily defined. Alternative boundaries can be defined as long as the specified functions and relationships (or their equivalents) are performed appropriately. Moreover, alternative aspects may perform functional blocks, steps, operations, methods, etc., in an order different from that described herein.

[0041] References to “one aspect,” “aspect,” “example aspect,” or similar phrases herein indicate that the described aspect may include a particular feature, structure, or characteristic, but each aspect need not necessarily include that particular feature, structure, or characteristic. Furthermore, such phrases need not refer to the same aspect. Additionally, when an aspect is used to describe a particular feature, structure, or characteristic, incorporating that feature, structure, or characteristic into other aspects would be within the knowledge of one or more people skilled in the art, whether or not it is explicitly mentioned or described herein. Furthermore, the expressions “coupled” and “connected,” along with their derivatives, may be used to describe aspects. These terms need not be synonyms. For example, the terms “connected” and / or “coupled” may be used to describe aspects indicating that two or more elements are in direct physical or electrical contact with each other. However, the term “coupled” may also indicate that two or more elements are not in direct contact with each other, but still cooperate or interact with each other.

[0042] The breadth and scope of this disclosure should not be limited by any of the exemplary aspects described above, but should be defined solely by the appended claims and their equivalents.

Claims

1. An apparatus comprising: Camera lens body; An upper flange, wherein the upper flange has a bottom surface and is configured to partially contact the camera lens body; A peripheral washer, the peripheral washer being coupled to the bottom surface of the upper flange; as well as A shaft, coupled to the bottom surface of an upper flange and configured to extend along a guide mechanism into a groove in the camera lens body, the shaft comprising: Removable filter; Filter holder, the filter holder being configured to hold a removable filter; and An arm that connects the bottom surface of the upper flange to the filter seat.

2. The device of claim 1, wherein the upper flange is coupled to the camera lens body by one or more fastening mechanisms.

3. The device of claim 1, wherein the peripheral washer is coupled to the upper flange in a groove along the periphery of the bottom surface.

4. The device of claim 1, wherein the peripheral gasket is a rubber gasket configured to seal the groove to prevent external debris from entering when the upper flange contacts the camera lens body.

5. The apparatus of claim 1, wherein the filter holder comprises: A platform with a central opening; The grooves along the perimeter of the platform; as well as At least one fastening mechanism on the platform, The removable filter is located in the groove and is secured to the platform by the at least one fastening mechanism.

6. The apparatus of claim 1, wherein the removable filter is a low-pass filter, a birefringent crystal, an LC shutter, or a diffractive optical filter.

7. The apparatus of claim 1, wherein the removable filter is configured to rotate within a filter holder.

8. The apparatus of claim 1, wherein the guiding mechanism comprises two guide rails and two end caps, and the arm has two rollers that move along the two guide rails and stop at the two end caps.

9. The apparatus of claim 1, wherein the arm has a length that positions the center point of the filter mount in a line with the inner center point of the camera lens body.

10. A system comprising: A camera lens body, which extends along an axis; One or more camera lenses perpendicular to the axis, the one or more camera lenses being positioned along the axis within the camera lens body; One or more slots perpendicular to an axis in the camera lens body, the one or more slots creating one or more openings in the camera lens body between the one or more camera lenses; One or more guide mechanisms, wherein the one or more guide mechanisms are positioned in the one or more slots; as well as One or more removable filter holders, the one or more removable filter holders being positioned in the one or more slots along the one or more guide mechanisms, each of the one or more removable filter holders comprising: An upper flange, wherein the upper flange has a bottom surface and is configured to partially contact the camera lens body; A peripheral washer, said peripheral washer being coupled to the bottom surface of the upper flange; and Shafts, each shaft coupled to the bottom surface of an upper flange, include: Removable filter; Filter holder, the filter holder being configured to hold a removable filter; and An arm that connects the bottom surface of the upper flange to the filter seat.

11. The system of claim 10, wherein the camera lens body is cylindrical and the bottom surface of the upper flange is an arc surface having the same radius as the camera lens body.

12. The system of claim 10, wherein the upper flange is coupled to the camera lens body by one or more fastening mechanisms.

13. The system of claim 10, wherein the peripheral washer is coupled to the upper flange in a groove along the periphery of the bottom surface.

14. The system of claim 10, wherein the peripheral gasket is a rubber gasket configured to seal the one or more grooves to prevent external debris from entering when the upper flange contacts the camera lens body.

15. The system of claim 10, wherein the filter holder comprises: A platform with a central opening; The grooves along the perimeter of the platform; as well as At least one fastening mechanism on the platform, The removable filter is located in the groove and is secured to the platform by the at least one fastening mechanism.

16. The system of claim 10, wherein the detachable filter is a low-pass filter, a birefringent crystal, an LC shutter, or a diffractive optical filter.

17. The system of claim 10, wherein the removable filter is configured to rotate within a filter holder.

18. The system of claim 10, wherein each of the one or more guiding mechanisms comprises two guide rails and two end caps, and the arm has two rollers that move along the two guide rails and stop at the two end caps.

19. The system of claim 10, wherein the arm has a length that positions the center point of the filter mount in a line with the inner center point of the camera lens body.

20. An apparatus comprising: A shaft that extends into a groove in the camera lens body; A filter holder, the filter holder being coupled to the end of a shaft; as well as A removable filter, wherein the removable filter is located within a filter holder.

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