A wide screen anamorphic lens capable of horizontal and vertical switching

Abstract

This invention discloses a widescreen anamorphic lens that can switch between horizontal and vertical orientations. It includes an anamorphic lens body, a mounting ring fixedly connected to one end of the anamorphic lens body, and a lens mount that is axially fixed and circumferentially rotatable relative to the mounting ring. When the anamorphic lens body rotates relative to the lens mount, it has a horizontal shooting position where the cylindrical lens group compresses light laterally and a vertical shooting position where the cylindrical lens group compresses light vertically. The mounting ring is provided with a locking component for locking with the lens mount. The locking component can lock the anamorphic lens body in either the horizontal or vertical shooting position. The mounting ring also has an unlocking component for unlocking the locking component from the lens mount. By rotating the anamorphic lens body, rapid switching between horizontal and vertical widescreen shooting can be achieved, ensuring the continuity of video footage and solving the problems of astigmatism and distortion that are easily caused by rotating traditional lens mounts.

Description

Technical Field

[0001] This invention relates to the field of lens technology, and more specifically to a widescreen anamorphic lens that can switch between horizontal and vertical orientations. Background Technology

[0002] Widescreen anamorphic lenses consist of cylindrical and spherical lens groups. By adding a cylindrical lens group to the optical path, the horizontal light rays are compressed at a specific ratio (such as 1.33x, 1.5x, or 2x), while the vertical light rays remain unchanged. The widescreen image is then obtained after decompression. In existing widescreen anamorphic lenses, the cylindrical lens group is fixed in position inside the lens, and the direction of light compression (usually horizontal) cannot be changed.

[0003] When users need to change the light compression direction of a widescreen anamorphic lens for shooting, they must disassemble the lens or use an external adapter to change the light compression direction, which disrupts the continuity of video recording. If a simple rotating lens assembly is used to rotate the widescreen anamorphic lens 90 degrees for shooting, the rotating lens assembly typically consists of two lens barrels connected by threads or clasps. Due to manufacturing precision limitations, there is a slight deviation between the rotation axis of the inner lens barrel and the geometric axis of the outer lens barrel. When the lens assembly rotates, the internal cylindrical lens group rotates around a mechanical axis that deviates from the true optical axis, causing the optical axis to trace a conical trajectory in space, resulting in a significant optical axis offset. Due to the non-rotational symmetry of the cylindrical lenses inside the anamorphic lens, this optical axis offset is amplified into significant astigmatism and distortion, affecting the user experience. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a compact, optically stable, and horizontal / vertical anamorphic lens that can quickly switch between horizontal and vertical widescreen shooting modes by rotating the anamorphic lens without disassembling it, thereby solving the problem that existing widescreen anamorphic lenses cannot quickly switch from horizontal to vertical shooting modes due to the fixed position of the cylindrical lens group.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A widescreen anamorphic lens that can switch between portrait and landscape orientations includes: The main body of the anamorphic lens contains a cylindrical lens group. The mounting ring is coaxially arranged with the morphing lens body and fixedly connected to one end of the morphing lens body; The lens mount is movably connected to one end of the mounting ring and is fixed in the axial direction and rotates in the circumferential direction relative to the mounting ring. The lens mount is used to fix the lens mount to the camera. When the anamorphic lens body and the mounting ring rotate relative to the lens mount, they have a horizontal shooting position where the cylindrical lens group compresses light laterally and a vertical shooting position where the cylindrical lens group compresses light vertically. A locking assembly is connected to the mounting ring and used to lock with the lens mount; the locking assembly can lock the anamorphic lens body and the mounting ring in the horizontal shooting position or the vertical shooting position; An unlocking component, movably connected to the mounting ring, is used to drive the locking assembly to unlock from the lens mount, so that the mounting ring and the anamorphic lens body can rotate relative to the lens mount.

[0006] Furthermore, the outer ring of the lens mount is provided with an arc-shaped protrusion extending circumferentially along the lens mount, and the two ends of the arc-shaped protrusion are provided with a first locking structure and a second locking structure; the central angle between the first locking structure and the second locking structure is 90°; The positioning component includes: The rotating arm is movably connected inside the mounting ring; The locking block is fixed to one side of the rotating arm and located inside the arc-shaped protrusion; An elastic element is elastically disposed between the mounting ring and the rotating arm. Its elastic force drives the locking block to move toward the arc-shaped protrusion so that the locking block is locked in the first locking structure or the second locking structure of the arc-shaped protrusion. The unlocking component is used to drive the rotating arm to move against the elastic force of the elastic element, so as to unlock the locking block from the first locking structure or the second locking structure of the arc-shaped protrusion.

[0007] Furthermore, the mounting ring includes an inner ring body and an outer ring body integrally connected to the outer periphery of the inner ring body. An annular mounting cavity is formed between the outer ring body and the inner ring body. The rotating arm is located within the annular mounting cavity. The elastic element is elastically disposed between the inner ring body and the rotating arm. The elastic force of the elastic element drives the rotating arm to move towards the inner wall of the outer ring body. The unlocking element is movably connected to the outer ring body. A portion of the unlocking element extends into the annular mounting cavity and acts on the rotating arm.

[0008] Furthermore, the rotating arm is an arc-shaped component extending along the circumferential direction of the annular mounting cavity, and one end of the rotating arm is provided with a connecting hole; the locking assembly also includes a pivot screw and a bushing located in the annular mounting cavity, the pivot screw passing through the connecting hole and fixed to the mounting ring, the bushing being sleeved on the outer periphery of the pivot screw and at least partially located within the connecting hole, the axial direction of the pivot screw being parallel to the axial direction of the mounting ring; the inner wall of the connecting hole of the rotating arm is rotatably engaged with the outer wall of the bushing, so that the rotating arm can rotate around the axis of the pivot screw; the axial length of the bushing can be set to different dimensions to adjust the damping magnitude when the rotating arm rotates.

[0009] Furthermore, the rotating arm has a V-shaped groove on the side facing the inner side of the outer ring body; the unlocking component includes a push key slidably connected to the outer side of the outer ring body, and a conical block located inside the outer ring body and fixedly connected to the push key, at least a portion of the conical block extending into the V-shaped groove; when the push key slides along the outer ring body, the conical block drives the rotating arm to rotate around the axis of the pivot screw through the V-shaped groove.

[0010] Furthermore, a spring pin is fixed to the side of the rotating arm facing the inner ring body, and the elastic element is a spring sleeved on the outer periphery of the spring pin. The elastic force of the elastic element is used to drive the rotating arm to rotate towards the inner wall of the outer ring body. The distance between the spring pin and the pivot screw is less than the distance between the V-groove and the bushing.

[0011] Furthermore, the locking block has a V-shaped locking groove on the side facing the arc-shaped protrusion; the first locking structure includes a first protrusion, and the second locking structure includes a second protrusion; when the first protrusion extends into the V-shaped locking groove, the anamorphic lens body and the mounting ring are locked in the horizontal shooting position; when the second protrusion extends into the V-shaped locking groove, the anamorphic lens body and the mounting ring are locked in the vertical shooting position. This design prevents loosening due to vibration in the locked state, improving stability.

[0012] Furthermore, the depth of the V-shaped locking groove is less than the depth of the V-shaped groove.

[0013] Furthermore, the axial direction of the spring pin is parallel to the angle bisector of the V-shaped locking groove.

[0014] Furthermore, the first locking structure further includes a first limiting groove located on one side of the first protrusion, and the second locking structure further includes a second limiting groove located on one side of the second protrusion; when the first protrusion extends into the V-shaped locking groove, a portion of the locking block is engaged in the first limiting groove; when the second protrusion extends into the V-shaped locking groove, a portion of the locking block is engaged in the second limiting groove.

[0015] Furthermore, the inner ring of the lens mount is provided with an arc-shaped protrusion extending circumferentially along the lens mount. The two ends of the arc-shaped protrusion in the circumferential direction are a first limiting end and a second limiting end, respectively. The arc-shaped area between the first limiting end and the second limiting end where the arc-shaped protrusion is not formed is an arc-shaped limiting groove. The central angle of the arc-shaped limiting groove is 90°. The outer circumference of the inner ring is provided with a limiting protrusion that slides within the arc-shaped limiting groove. When the limiting protrusion abuts against the first limiting end of the arc-shaped protrusion, the anamorphic lens body and the mounting ring are locked in the horizontal shooting position. When the limiting protrusion abuts against the second limiting end of the arc-shaped protrusion, the anamorphic lens body and the mounting ring are locked in the vertical shooting position.

[0016] Furthermore, an adapter ring is fixed to one end of the anamorphic lens body facing the mounting ring. The adapter ring is coaxially arranged with the anamorphic lens body, and the mounting ring is fixed to the adapter ring. A first shim is provided between the mounting ring and the adapter ring. The first shim can be set to different thicknesses to adjust the flange distance of the widescreen anamorphic lens.

[0017] Furthermore, the lens mount is fixedly connected to the mounting ring by a pressure ring, and a second shim is provided between the lens mount and the mounting ring. The second shim can be set to different thicknesses to adjust the rotational resistance required for the lens mount to rotate.

[0018] The technical solution of this invention has the following advantages: 1. The horizontally and vertically switchable widescreen anamorphic lens provided by the present invention, by additionally setting a mounting ring coaxially and fixedly connected to the anamorphic lens body between the anamorphic lens body and the lens mount, and the lens mount and the mounting ring are fixed in relative axial direction and rotate in relative circumferential direction, when the anamorphic lens body and the mounting ring rotate relative to the lens mount, the cylindrical lens group inside the anamorphic lens body can be placed in a horizontal shooting position that compresses light laterally or a vertical shooting position that compresses light vertically. Without disassembling the anamorphic lens body, the rapid switching between horizontal and vertical widescreen shooting can be achieved by rotating the anamorphic lens body, ensuring the continuity of video shooting. Moreover, since the anamorphic lens body and the mounting ring are coaxially fixed, when the anamorphic lens body and the mounting ring rotate relative to the lens mount, the relative positions of all lenses inside the anamorphic lens body, including the cylindrical lens group, are completely fixed. What rotates is the entire rigid optical system, not just a single set of lenses. Therefore, the optical axis is unique and definite within the anamorphic lens body and will not cause internal eccentricity due to rotation. The ray tracing path of the entire optical system is completely consistent with that before rotation. It is just that the whole rotates 90° around the optical axis. All aberrations (including residual astigmatism and distortion in the original design) also rotate along with it, and no new astigmatism and distortion will be generated. This solves the astigmatism and distortion problems that are easily caused by the rotation of traditional lens mounts.

[0019] 2. The horizontal / vertical switchable widescreen anamorphic lens provided by this invention, through the connection of a locking component to the mounting ring for locking with the lens mount, provides clear tactile feedback and locking in both horizontal and vertical shooting positions, preventing accidental rotation of the anamorphic lens body during shooting and affecting the shooting experience. By providing an unlocking component on the mounting ring for unlocking the locking component from the lens mount, quick unlocking can be achieved by manipulating the unlocking component, facilitating photographers to quickly switch between horizontal and vertical shooting positions on-site through blind operation.

[0020] 3. The widescreen anamorphic lens that can be switched between horizontal and vertical orientation provided by the present invention uses an elastic element to drive the rotating arm to move towards the arc-shaped protrusion inside the lens mount. This facilitates the reliable locking of the locking block on one side of the rotating arm with the first or second locking structure of the arc-shaped protrusion, preventing the anamorphic lens body from accidentally loosening.

[0021] 4. The horizontally and vertically switchable widescreen anamorphic lens provided by this invention, since the dimensions of the outer and inner rings of the mounting ring are constrained by the overall dimensions of the anamorphic lens body and the internal lens dimensions, and the radial dimension of the annular mounting cavity between the outer and inner rings is limited, the rotating arm is set as an arc-shaped component extending along the circumferential direction of the annular mounting cavity. The rotating arm can have a relatively long length, and the corresponding rotation lever arm of the rotating arm can be designed to be relatively long. Under the condition of ensuring sufficient reliable locking force between the lens mount and the mounting ring, the unlocking component can be operated to unlock with a relatively small force, making the horizontal and vertical switching operation easier.

[0022] 5. The widescreen anamorphic lens that can switch between horizontal and vertical orientation provided by the present invention has a structural design in which the rotating arm rotates around the axis of the pivot screw via a bushing. In the design, the bushing with an axial length can be used to adjust the force and feel required to rotate the rotating arm.

[0023] 6. The widescreen anamorphic lens that can switch between horizontal and vertical orientation provided by the present invention includes a push button and a conical block that are fixedly connected. When the push button is pushed, the inclined surface of the conical block can squeeze the wall of the V-shaped groove in the rotating arm. Through the action of the inclined surface, a small force can be applied to the push button to drive the rotating arm to rotate, making the operation more labor-saving.

[0024] 7. The widescreen anamorphic lens that can switch between horizontal and vertical orientation provided by the present invention uses a V-shaped locking groove and a first or second protrusion to lock the locking block and the lens mount arc-shaped protrusion in a concave-convex cooperation manner, which can reliably lock the anamorphic lens body in both horizontal and vertical shooting positions.

[0025] 8. The widescreen anamorphic lens that can switch between horizontal and vertical orientation provided by the present invention has a first locking structure that adopts a combination of a first protrusion and a first limiting groove. When the first protrusion extends into the V-shaped locking groove of the locking block, a part of the locking block can also be locked into the first limiting groove, which can further improve the locking effect between the locking block and the first locking structure. Similarly, the second locking structure adopts a combination of a second protrusion and a second limiting groove, which can also further improve the locking effect between the locking block and the second locking structure.

[0026] 9. The widescreen anamorphic lens that can switch between horizontal and vertical orientations provided by the present invention has an arc-shaped limiting groove with a central angle of 90° set in the inner ring of the lens mount, and a limiting protrusion that slides in the arc-shaped limiting groove is set in the outer circumference of the inner ring. When the limiting protrusion abuts against the two ends of the arc-shaped limiting groove, the rotation angle of the lens mount and the mounting ring can be limited, so that the anamorphic lens body and the lens mount can be locked more reliably in both horizontal and vertical shooting positions.

[0027] 10. The horizontally and vertically switchable widescreen anamorphic lens provided by this invention has extremely high requirements for the lens assembly position and coaxiality because the lens barrel of the anamorphic lens body is an optical reference component. The lens barrel of the anamorphic lens body cannot be arbitrarily drilled or modified, and cannot withstand repeated tightening stress. If the mounting ring is directly locked to the lens barrel of the anamorphic lens body by locking screws, the tension of the locking screws, assembly compression, and subsequent disassembly and assembly will directly pull and compress the lens barrel, causing micro-deformation of the lens barrel, optical axis offset, and lens eccentricity, affecting image quality. By adding an independent adapter ring between the lens barrel of the anamorphic lens body and the mounting ring, the adapter ring bears the tightening force and assembly stress from the mounting ring and unifies the installation reference, decoupling radial coaxial accuracy from axial flange distance adjustment. At the same time, the flat end face of the adapter ring, in conjunction with an adjustable thickness shim, enables precise micro-adjustment of the flange distance, taking into account optical structure stability, mass production adjustment convenience, and multi-mount modular adaptation capability.

[0028] 11. The widescreen anamorphic lens that can be switched between horizontal and vertical orientation provided by the present invention has a lens mount that is fixedly connected to the mounting ring by a pressure ring. The lens mount can rotate around the center of the anamorphic lens body as the central axis. Gaskets of different thicknesses are provided between the lens mount and the pressure ring to adjust the force and feel required to rotate the lens mount.

[0029] In summary, the horizontal / vertical switching widescreen anamorphic lens provided by this invention has the following advantages: Dual-purpose: No additional accessories are required; it quickly switches between horizontal and vertical shooting, ensuring the continuity of the video shooting process. Stable image quality: Through a precisely designed rotating mechanism, it solves the problems of astigmatism and distortion caused by the rotation of traditional lens sets. Intuitive operation: The lens has an external push button, allowing the photographer to blindly switch between horizontal and vertical modes on set. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural diagram of the widescreen anamorphic lens in an embodiment of the present invention; Figure 2 This is an exploded view of the widescreen anamorphic lens in an embodiment of the present invention; Figure 3 This is a partial longitudinal section schematic diagram of the widescreen anamorphic lens in an embodiment of the present invention; Figure 4 for Figure 3 A cross-sectional view of the AA plane; Figure 5 This is a three-dimensional structural diagram of the rotating arm in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the lens mount in an embodiment of the present invention; Figure 7 This is a horizontal schematic diagram of the widescreen anamorphic lens at the lens mount position in an embodiment of the present invention, wherein the widescreen anamorphic lens is in a horizontal shooting position; Figure 8 for Figure 7 A schematic diagram showing the lens mount rotated 45° relative to the anamorphic lens body. Figure 9 for Figure 7 A schematic diagram showing the lens mount after rotating 90° relative to the anamorphic lens body.

[0032] Explanation of reference numerals in the attached drawings: 100, Anamorphic lens body; 200, Adapter ring; 300, Mounting ring; 310, Inner ring body; 311, Travel limit block; 320, Outer ring body; 321, Limiting protrusion; 330, Annular mounting cavity; 400, Lens mount; 410, Mounting structure; 420, Arc-shaped protrusion; 421, First protrusion; 422, Second protrusion; 423, First limiting groove; 424, Second limiting groove; 430, Arc-shaped protrusion; 430a, First limiting end; 430b, The first limiting end; Two limiting ends; 440, arc-shaped limiting groove; 500, locking assembly; 510, rotating arm; 511, convex arc surface; 512, concave arc surface; 513, V-groove; 514, connecting hole; 520, bushing; 530, pivot screw; 540, spring pin; 550, elastic element; 560, locking block; 561, V-shaped locking groove; 600, unlocking element; 610, push key; 620, conical block; 630, fastening screw; 700, pressure ring; 810, first washer; 820, second washer. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] like Figure 1 , Figure 2 and Figure 3 The illustrated widescreen anamorphic lens, switchable between portrait and landscape orientations, includes an anamorphic lens body 100, an adapter ring 200, a mounting ring 300, and a lens mount 400, all coaxially arranged. The anamorphic lens body 100 includes a lens frame (not shown) and multiple lens groups (not shown) fixed within the lens frame. Each lens group includes at least a cylindrical lens group for compressing light. The adapter ring 200 is fixedly connected to one end of the lens frame of the anamorphic lens body 100 by multiple locking screws extending axially along the axial direction of the anamorphic lens body 100. The mounting ring 300 is fixedly connected to the adapter ring 200 by multiple locking screws extending axially along the axial direction of the anamorphic lens body 100. The lens mount 400 is axially pressed against the mounting ring 300 by a pressure ring 700, and the pressure ring 700 and the mounting ring 300 are fixedly connected by multiple locking screws extending axially along the axial direction of the anamorphic lens body 100. The lens mount 400 is used for fixed connection with the camera. When this widescreen anamorphic lens is mounted on the camera, the lens mount 400 and the camera are fixed as a whole, while the anamorphic lens body 100, the adapter ring 200, and the mounting ring 300 are another fixed whole. This configuration allows the lens mount 400 and the mounting ring 300 to maintain relative axial fixation and relative circumferential rotation. The anamorphic lens body 100 and the mounting ring 300 can rotate relative to the lens mount 400 about the optical axis of the anamorphic lens body 100.

[0037] This type of widescreen anamorphic lens, which can switch between horizontal and vertical orientations, has an additional mounting ring 300 between the anamorphic lens body 100 and the lens mount 400, and the mounting ring 300 is coaxially and fixedly connected to the anamorphic lens body 100. When the anamorphic lens body 100 and the mounting ring 300 rotate relative to the lens mount 400, the cylindrical lens group inside the anamorphic lens body 100 can be positioned in either a horizontal shooting position (compressing light laterally) or a vertical shooting position (compressing light vertically). Without disassembling the anamorphic lens body 100, the rapid switching between horizontal and vertical widescreen shooting can be achieved by rotating the anamorphic lens body 100, ensuring the continuity of the video shooting footage. Moreover, since the anamorphic lens body 100 and the mounting ring 300 are coaxially fixedly connected, when the anamorphic lens body 100 and the mounting ring 300 rotate relative to the lens mount 400, the relative positions of all lenses inside the anamorphic lens body 100, including the cylindrical lens group, are completely fixed. What rotates is the entire rigid optical system, not a single group of lenses inside. Therefore, the optical axis is unique and definite within the anamorphic lens body 100 and will not cause internal eccentricity due to rotation. The ray tracing path of the entire optical system is completely consistent with that before rotation. It is only that the whole rotates 90° around the optical axis. All aberrations (including residual astigmatism and distortion in the original design) also rotate along with it, and no new astigmatism and distortion will be generated. This solves the problem of astigmatism and distortion that is easily caused by the rotation of traditional lens mounts.

[0038] It should also be noted that, since the lens barrel of the anamorphic lens body 100 is an optical reference component, it has extremely high requirements for lens group mounting positions and coaxiality. The lens barrel of the anamorphic lens body 100 cannot be arbitrarily drilled or modified, nor can it withstand repeated tightening stress. If the mounting ring 300 is directly locked to the lens barrel of the anamorphic lens body 100 using locking screws, the tension of the locking screws, assembly compression, and subsequent disassembly and assembly will directly pull and compress the lens barrel, causing micro-deformation of the lens barrel, optical axis misalignment, and lens eccentricity, affecting image quality. This solution adds an independent adapter ring 200 between the lens barrel of the anamorphic lens body 100 and the mounting ring 300. The adapter ring 200 bears the tightening force and assembly stress from the mounting ring 300, ensuring that the optical structural stability of the anamorphic lens body 100 is not affected by the additional mounting ring 300.

[0039] like Figure 2 and Figure 3As shown, a first shim 810 is placed between the mounting ring 300 and the adapter ring 200. The first shim 810 can be set to different thicknesses to adjust the flange distance of the widescreen anamorphic lens. After the mounting ring 300 is additionally connected to one side of the lens barrel of the anamorphic lens body 100, the radial coaxiality and axial spacing of the mounting ring 300 and the anamorphic lens body 100 need to be considered. The radial coaxiality is achieved by axially fixing and locking the mounting ring 300 and the adapter ring 200. The axial spacing is adjusted by setting the first shim 810 of different thicknesses between the mounting ring 300 and the adapter ring 200, thus decoupling the adjustment of radial coaxiality accuracy and axial spacing accuracy. If the mounting ring 300 is directly locked to the lens barrel, the radial coaxiality error + axial spacing error will be superimposed, and the two accuracies will interfere with each other, making it impossible to finely adjust the axial spacing independently (that is, the flange distance of the widescreen anamorphic lens cannot be accurately adjusted), doubling the adjustment difficulty and affecting the product yield. Moreover, the lens barrel and internal lens group of the anamorphic lens body 100 are fixed designs. Only the combination of adapter ring 200 + mounting ring 300 + first gasket 810 needs to be replaced to quickly adapt to camera mounts of different brands and flange distances without modifying the expensive and complex optical lens barrel structure, thus reducing mold opening and R&D costs. In addition, since the outer side of the lens barrel of the anamorphic lens body 100 is mostly irregular, stepped, and decorative, the end face flatness is poor, which is not suitable for directly pressing gaskets over a large area. This can easily lead to uneven gasket pressing and skewed gaskets, resulting in flange distance deviations. However, the adapter ring 200 is a thin-walled, high-rigidity ring standard part with a precision-ground end face, which can provide a uniform flat end face for the first gasket 810, enabling precise fine-tuning of the flange distance.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment, a second shim 820 is provided between the lens mount 400 and the mounting ring 300. The second shim 820 can be set to different thicknesses to adjust the rotational resistance required for rotating the lens mount 400. By providing shims of different thicknesses between the lens mount 400 and the retaining ring 700, the force and feel required to rotate the lens mount 400 can be adjusted.

[0041] like Figure 1 and Figure 2 As shown, a locking component 500 is internally connected to the mounting ring 300. The locking component 500 is used to lock with the lens mount 400. The locking component 500 can lock the anamorphic lens body 100 and the mounting ring 300 in either a landscape or portrait shooting position. The locking component 500 provides a clear feel and lock in both landscape and portrait shooting positions, preventing accidental rotation of the anamorphic lens body 100 during shooting and thus preventing any impact on the shooting experience.

[0042] like Figure 1 and Figure 2As shown, an unlocking component 600 is also slidably connected to the mounting ring 300. The unlocking component 600 is used to unlock the locking assembly 500 from the lens mount 400, so that the mounting ring 300 and the anamorphic lens body 100 can rotate relative to the lens mount 400. By operating the unlocking component 600 to drive the locking assembly 500 to unlock quickly, it is easy to quickly switch between landscape and portrait shooting positions.

[0043] like Figure 3 and Figure 4 As shown, the mounting ring 300 includes an outer ring body 310 and an inner ring body 320 integrally connected inside the outer ring body 310, with the outer ring body 310 and the inner ring body 320 forming an annular mounting cavity. Figure 4 and Figure 5 As shown, the locking assembly 500 includes a rotating arm 510, a bushing 520, a pivot screw 530, a locking block 560, and an elastic element 550. The rotating arm 510 is movably connected to the interior of the mounting ring 300; the locking block 560 is fixed to one side of the rotating arm 510 and is located inside the arc-shaped protrusion 420; the elastic element 550 is elastically disposed between the mounting ring 300 and the rotating arm 510. Figure 6 and Figure 7 As shown, the outer ring of the lens mount 400 has an arc-shaped protrusion 420 extending circumferentially along the lens mount 400. The arc-shaped protrusion 420 has a first locking structure and a second locking structure at both ends; the central angle between the first locking structure and the second locking structure is 90°. The elastic force of the elastic element 550 drives the locking block 560 to move towards the arc-shaped protrusion 420, so that the locking block 560 is locked in the first locking structure or the second locking structure of the arc-shaped protrusion 420. The locking assembly 500 uses the elastic element 550 to drive the rotating arm 510 to move towards the arc-shaped protrusion inside the lens mount 400, which facilitates the reliable locking of the locking block 560 on one side of the rotating arm 510 with the first locking structure or the second locking structure of the arc-shaped protrusion 420, preventing accidental loosening of the deformable lens body 100.

[0044] like Figure 2 , Figure 4 and Figure 7 As shown, the unlocking component 600 includes a push key 610 slidably connected to the outside of the outer ring body 310 and a conical block 620 located inside the outer ring body 310. The push key 610 can be pushed and slid by hand, and the conical block 620 is fixedly connected to the push key 610 by a fastening screw 630. The unlocking component 600 is used to drive the rotating arm 510 to move against the elastic force of the elastic member, so as to unlock the locking block 560 from the first locking structure or the second locking structure of the arc-shaped protrusion 420.

[0045] like Figure 3 , Figure 4 and Figure 5As shown, one end of the rotating arm 510 is provided with a connecting hole 514. A pivot screw 530 passes through the connecting hole 514 and is fixed to the mounting ring 300. A bushing 520 is fitted around the outer circumference of the pivot screw 530 and is at least partially located within the connecting hole 514. The axial direction of the pivot screw 530 is parallel to the axial direction of the mounting ring 300. The inner wall of the connecting hole 514 of the rotating arm 510 and the outer wall of the bushing 520 are rotatably engaged, so that the rotating arm 510 can rotate around the axis of the pivot screw 530. This structural design, where the rotating arm 510 rotates around the axis of the pivot screw 530 via the bushing 520, allows for adjustment of the force and feel required to rotate the rotating arm 510 by using a bushing 520 with varying axial length.

[0046] like Figure 4 and Figure 5 As shown, the rotating arm 510 has an arc-shaped member extending circumferentially along the annular mounting cavity. The side of the rotating arm 510 facing the outer ring body 310 is a convex arc surface 511, and the side of the rotating arm 510 facing the inner ring body 320 is a concave arc surface 512. The connecting hole 514 and the pivot screw 530 are located at one end of the rotating arm 510, and the conical block 620 is located at the other end of the rotating arm 510. Since the dimensions of the outer ring 310 and inner ring 320 of the mounting ring 300 are constrained by the overall dimensions of the anamorphic lens body 100 and the internal lens dimensions, the radial dimension of the annular mounting cavity between the outer ring 310 and inner ring 320 is limited. By setting the rotating arm 510 as an arc-shaped component extending along the circumferential direction of the annular mounting cavity, the rotating arm 510 can have a relatively long length, and the corresponding rotation lever arm of the rotating arm 510 can be designed to be relatively long. While ensuring that there is a sufficiently reliable locking force between the lens mount 400 and the mounting ring 300, the unlocking component 600 can be unlocked with a relatively small force, making the horizontal and vertical switching operation easier.

[0047] like Figure 4 and Figure 5 As shown, the rotating arm 510 has a V-shaped groove 513 on the side facing the inner side of the outer ring body 310. At least a portion of the conical block 620 extends into the V-shaped groove 513, and the conical block 620 transmits the driving force to the rotating arm 510 through the groove wall of the V-shaped groove 513. When the push key 610 slides along the outer ring body 310, the conical block 620 and the push key 610 move synchronously. The inclined surface of the conical block 620 can compress the groove wall of the V-shaped groove 513 in the rotating arm 510. Through the inclined surface cooperation, a small force can be applied to the push key 610 to push the rotating arm 510 to rotate around the axis of the pivot screw 530, making the operation more labor-saving.

[0048] like Figure 4As shown, a spring pin 540 is fixed to the side of the rotating arm 510 facing the inner ring 320. An elastic element 550 is a spring sleeved around the outer circumference of the spring pin 540. The elastic element 550 is elastically positioned between the inner ring 320 and the rotating arm 510. The elastic force of the elastic element 550 drives the rotating arm 510 to rotate towards the inner wall of the outer ring 310. The spring pin 540 improves the installation stability of the elastic element 550 and prevents it from twisting. The distance between the spring pin 540 and the pivot screw 530 is smaller than the distance between the conical block 620 and the pivot screw 530. Through the lever principle, because the pushing arm of the push key 610 is longer, the operation of driving the rotating arm 510 to rotate using the push key 610 requires less effort.

[0049] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the locking block 560 has a V-shaped locking groove 561 on the side facing the arc-shaped protrusion 420. The groove depth of the V-shaped locking groove 561 is less than the groove depth of the V-shaped groove 513, and the axial direction of the spring pin 540 is parallel to the angle bisector of the V-shaped locking groove 561. The first locking structure includes a first protrusion 421 at one end of the arc-shaped protrusion 420, and the second locking structure includes a second protrusion 422 at the other end of the arc-shaped protrusion 420. When the first protrusion 421 extends into the V-shaped locking groove 561, the anamorphic lens body 100 and the mounting ring 300 are locked in the horizontal shooting position. When the second protrusion 422 extends into the V-shaped locking groove 561, the anamorphic lens body 100 and the mounting ring 300 are locked in the vertical shooting position. With this configuration, the locking block 560 and the lens mount 400 are locked together by a V-shaped locking groove 561 and a first protrusion 421 or a second protrusion 422. This ensures that the anamorphic lens body 100 is reliably locked in both horizontal and vertical shooting positions, preventing loosening due to vibration in the locked state and improving stability.

[0050] like Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, the first locking structure further includes a first limiting groove 423 located on one side of the first protrusion 421, and the second locking structure further includes a second limiting groove 424 located on one side of the second protrusion 422. When the first protrusion 421 extends into the V-shaped locking groove 561, a portion of the locking block 560 is engaged in the first limiting groove 423; when the second protrusion 422 extends into the V-shaped locking groove 561, a portion of the locking block 560 is engaged in the second limiting groove 424. The first locking structure adopts a combination of a first protrusion 421 and a first limiting groove 423. When the first protrusion 421 extends into the V-shaped locking groove 561 of the locking block 560, a part of the locking block 560 can also be locked into the first limiting groove 423, which can further improve the locking effect between the locking block 560 and the first locking structure. Similarly, the second locking structure adopts a combination of a second protrusion 422 and a second limiting groove 424, which can further improve the locking effect between the locking block 560 and the second locking structure.

[0051] like Figures 6 to 9 As shown, the inner ring of the lens mount 400 is provided with an arc-shaped protrusion 430 extending circumferentially along the lens mount 400. The two ends of the arc-shaped protrusion 430 in the circumferential direction are a first limiting end 430a and a second limiting end 430b, respectively. The arc-shaped area between the first limiting end 430a and the second limiting end 430b where the arc-shaped protrusion 430 is not formed is an arc-shaped limiting groove 440; the central angle of the arc-shaped limiting groove 440 is 90°. (Combined with...) Figure 4 The inner ring 320 has a limiting protrusion 321 on its outer periphery that slides within the arc-shaped limiting groove 440. When the limiting protrusion 321 abuts against the first limiting end 430a of the arc-shaped protrusion 420, the anamorphic lens body 100 and the mounting ring 300 are locked in the horizontal shooting position. When the limiting protrusion 321 abuts against the second limiting end 430b of the arc-shaped protrusion 420, the anamorphic lens body 100 and the mounting ring 300 are locked in the vertical shooting position. An arc-shaped limiting groove 440 with a central angle of 90° is provided on the inner ring of the lens mount 400. A limiting protrusion 321 that slides in the arc-shaped limiting groove 440 is provided on the outer circumference of the inner ring body 320. When the limiting protrusion 321 abuts against the two ends of the arc-shaped limiting groove 440, the rotation angle of the lens mount 400 and the mounting ring 300 can be limited, so that the anamorphic lens body 100 and the lens mount 400 can be locked more reliably in both horizontal and vertical shooting positions.

[0052] In summary, the widescreen anamorphic lens that can switch between portrait and landscape orientations provided by this invention has the following advantages: 1. By additionally setting a mounting ring 300 coaxially and fixedly connected to the anamorphic lens body 100 between the anamorphic lens body 100 and the lens mount 400, and keeping the lens mount 400 and the mounting ring 300 relatively axially fixed and relatively circumferentially rotating, when the anamorphic lens body 100 and the mounting ring 300 rotate relative to the lens mount 400, the cylindrical lens group inside the anamorphic lens body 100 can be placed in a horizontal shooting position with horizontal light compression or a vertical shooting position with vertical light compression. Without disassembling the anamorphic lens body 100, the rapid switching between horizontal and vertical widescreen images can be achieved by rotating the anamorphic lens body 100, ensuring the continuity of the video shooting footage.

[0053] Second, since the anamorphic lens body 100 and the mounting ring 300 are coaxially fixedly connected, when the anamorphic lens body 100 and the mounting ring 300 rotate relative to the lens mount 400, the relative positions of all lenses inside the anamorphic lens body 100, including the cylindrical lens group, are completely fixed. What rotates is the entire rigid optical system, not a single group of lenses inside. Therefore, the optical axis is unique and definite within the anamorphic lens body 100, and will not cause internal eccentricity due to rotation. The ray tracing path of the entire optical system is completely consistent with that before rotation. It is only that the whole rotates 90° around the optical axis. All aberrations (including residual astigmatism and distortion in the original design) also rotate along with it, and no new astigmatism and distortion will be generated. This solves the problem of astigmatism and distortion that is easily caused by the rotation of traditional lens mounts.

[0054] 3. Intuitive operation: The mounting ring 300 has an external push button 610 on the outside. Combined with the lever principle, the photographer can blindly switch between horizontal and vertical modes on the shooting site, and the operation is easy and effortless.

[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A widescreen anamorphic lens that can switch between horizontal and vertical orientations, characterized in that, include: The anamorphic lens body (100) has a cylindrical lens group inside; The mounting ring (300) is coaxially arranged with the morphing lens body (100) and fixedly connected to one end of the morphing lens body (100); A lens mount (400) is movably connected to one end of the mounting ring (300) and is fixed in the axial direction and rotated in the circumferential direction relative to the mounting ring (300). The lens mount (400) is used to fix the lens to the camera. When the anamorphic lens body (100) and the mounting ring (300) rotate relative to the lens mount (400), they have a horizontal shooting position where the cylindrical lens group compresses light laterally and a vertical shooting position where the cylindrical lens group compresses light vertically. A locking assembly (500) is connected to the mounting ring (300) and used to lock with the lens mount (400); the locking assembly (500) can lock the anamorphic lens body (100) and the mounting ring (300) in the horizontal shooting position or the vertical shooting position; The unlocking component (600) is movably connected to the mounting ring (300) and is used to drive the locking assembly (500) to unlock from the lens mount (400).

2. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 1, characterized in that, The outer ring of the lens mount (400) is provided with an arc-shaped protrusion (420) extending circumferentially along the lens mount (400), and the two ends of the arc-shaped protrusion (420) are provided with a first locking structure and a second locking structure. The central angle between the first locking structure and the second locking structure is 90°; The card slot assembly (500) includes: The rotating arm (510) is movably connected to the inside of the mounting ring (300); The locking block (560) is fixed to one side of the rotating arm (510) and located inside the arc-shaped protrusion (420); An elastic element (550) is elastically disposed between the mounting ring (300) and the rotating arm (510). Its elastic force drives the locking block (560) to move toward the arcuate protrusion (420) so that the locking block (560) is locked in the first locking structure or the second locking structure of the arcuate protrusion (420). The unlocking component (600) is used to drive the rotating arm (510) to move against the elastic force of the elastic member, so as to unlock the locking block (560) from the first locking structure or the second locking structure of the arc-shaped protrusion (420).

3. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 2, characterized in that, The mounting ring (300) includes an outer ring body (310) and an inner ring body (320) integrally connected to the inner circumference of the outer ring body (310). An annular mounting cavity is formed between the outer ring body (310) and the inner ring body (320). The rotating arm (510) is located in the annular mounting cavity. The elastic element (550) is elastically disposed between the inner ring body (320) and the rotating arm (510). The elastic force of the elastic element (550) drives the rotating arm (510) to move towards the inner wall of the outer ring body (310). The unlocking element (600) is movably connected to the outer ring body (310). A portion of the unlocking element (600) extends into the annular mounting cavity and acts on the rotating arm (510).

4. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 3, characterized in that, The rotating arm (510) is an arc-shaped component extending along the circumferential direction of the annular mounting cavity, and one end of the rotating arm (510) is provided with a connecting hole (514); the locking assembly (500) also includes a pivot screw (530) and a bushing (520) located in the annular mounting cavity, the pivot screw (530) passes through the connecting hole (514) and is fixed to the mounting ring (300), and the bushing (520) is sleeved on the outer periphery of the pivot screw (530). And at least part of it is located in the connecting hole (514), the axial direction of the pivot screw (530) is parallel to the axial direction of the mounting ring (300); the inner wall of the connecting hole of the rotating arm (510) is rotatably engaged with the outer wall of the bushing (520) so that the rotating arm (510) can rotate about the axis of the pivot screw (530); the axial length of the bushing (520) can be set to different sizes to adjust the damping magnitude when the rotating arm (510) rotates.

5. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 4, characterized in that, The rotating arm (510) has a V-groove (513) on the side facing the inner side of the outer ring body (310); the unlocking member (600) includes a push key (610) slidably connected to the outer side of the outer ring body (310) and a conical block (620) located inside the outer ring body (310) and fixedly connected to the push key (610), at least a portion of the conical block (620) extending into the V-groove (513); when the push key (610) slides along the outer ring body (310), the conical block (620) drives the rotating arm (510) to rotate around the axis of the pivot screw (530) through the V-groove (513).

6. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 5, characterized in that, A spring pin (540) is fixed to the side of the rotating arm (510) facing the inner ring (320). The elastic element (550) is a spring sleeved on the outer periphery of the spring pin (540). The elastic force of the elastic element (550) is used to drive the rotating arm (510) to rotate towards the inner wall of the outer ring (310). The distance between the spring pin (540) and the pivot screw (530) is less than the distance between the V-groove (513) and the bushing (520).

7. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 3, characterized in that, The locking block (560) has a V-shaped locking groove (561) on the side facing the arc-shaped protrusion (420); the first locking structure includes a first protrusion (421), and the second locking structure includes a second protrusion (422); when the first protrusion (421) extends into the V-shaped locking groove (561), the anamorphic lens body (100) and the mounting ring (300) are locked in the horizontal shooting position; when the second protrusion (422) extends into the V-shaped locking groove (561), the anamorphic lens body (100) and the mounting ring (300) are locked in the vertical shooting position.

8. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 7, characterized in that, The first locking structure further includes a first limiting groove (423) located on one side of the first protrusion (421), and the second locking structure further includes a second limiting groove (424) located on one side of the second protrusion (422); when the first protrusion (421) extends into the V-shaped locking groove (561), a portion of the locking block (560) is locked into the first limiting groove (423); when the second protrusion (422) extends into the V-shaped locking groove (561), a portion of the locking block (560) is locked into the second limiting groove (424).

9. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 7, characterized in that, The inner ring of the lens mount (400) is provided with an arc-shaped protrusion (430) extending circumferentially along the lens mount (400). The two ends of the arc-shaped protrusion (430) in the circumferential direction are a first limiting end (430a) and a second limiting end (430b), respectively. The arc-shaped area between the first limiting end (430a) and the second limiting end (430b) where the arc-shaped protrusion (430) is not formed is an arc-shaped limiting groove (440). The central angle of the arc-shaped limiting groove (440) is 90°. The inner ring body (320)... The outer periphery is provided with a limiting protrusion (321) that slides within the arc-shaped limiting groove (440). When the limiting protrusion (321) abuts against the first limiting end (430a) of the arc-shaped protrusion (430), the anamorphic lens body (100) and the mounting ring (300) are locked in the horizontal shooting position; when the limiting protrusion (321) abuts against the second limiting end (430b) of the arc-shaped protrusion (430), the anamorphic lens body (100) and the mounting ring (300) are locked in the vertical shooting position.

10. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 1, characterized in that, An adapter ring (200) is fixed to one end of the anamorphic lens body (100) facing the mounting ring (300). The adapter ring (200) is coaxially arranged with the anamorphic lens body (100), and the mounting ring (300) is fixed to the adapter ring (200). A first gasket (810) is provided between the mounting ring (300) and the adapter ring (200). The first gasket (810) can be set to different thicknesses to adjust the flange distance of the widescreen anamorphic lens.

11. The widescreen anamorphic lens that can switch between portrait and landscape orientations according to claim 1, characterized in that, The lens mount (400) is fixedly connected to the mounting ring (300) by a pressure ring (700). A second shim (820) is provided between the lens mount (400) and the mounting ring (300). The second shim (820) can be set to different thicknesses to adjust the rotational resistance required for the lens mount (400) to rotate.

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