Camera

Abstract

The present invention discloses a camera (1), and this camera (1) includes: - a camera housing (2) having a threaded opening (14) for receiving a lens (3); - a lens (3) having an optical axis (OA) and having a threaded tube (10) for screwing and the threaded opening (14) of the camera housing (2), wherein the lens (3) can be screwed into the threaded opening (14) movably in the circumferential direction freedom degree of the threaded tube (10) and in the screwing direction freedom degree of the lens (3) aligned in the direction of the optical axis (OA) of the lens (3); - a locking element (12) for fixing the lens (3) screwed into the threaded opening (14) in the camera housing (2). The locking element (12) has a fixing contour (15) designed to engage in one of the threads (F) of the threaded opening (14) or the threaded tube (10), and is displaceable in a direction other than the circumferential direction freedom degree and the freedom degree in the lens insertion direction. The locking element (12) is arranged on the camera (1) so as to engage with the thread (F) at a position displaced at an angle with respect to the freedom degree.

Description

Technical Field

[0001] The present invention relates to a camera, and this camera - has a threaded opening for receiving a lens, a camera housing, and - has a threaded tube for screwing and a threaded opening of the camera housing, a lens having an optical axis. Here, the lens can be screwed into the threaded opening so as to be movable in the circumferential direction degree of freedom of the threaded tube and in the degree of freedom of the screwing direction of the lens aligned in the direction of the optical axis of the lens. - a locking element for fixing the lens screwed into the threaded opening in the camera housing and has.

Background Art

[0002] A camera including an objective lens unit screwed into a threaded opening of a camera body is well known in the prior art.

[0003] The accurately set flange focal length, that is, the distance between the imaging service of the imaging sensor and the lens mounting surface, is extremely important for camera manufacturers and users. It has a strong influence on the overall image quality, especially on image sharpness. To achieve an accurate flange focal length, either very strict manufacturing tolerances that would significantly increase the cost of the parts, or the incorporation of a calibration mechanism is required. However, this is costly, so general cameras do not have any mechanism for fixing the back focus distance that deviates from the norm as a defect, because all elements in the optical path between the sensor and the lens can change the back focus distance, which can result in a blurred image, significantly restricting the customer's choice of lenses and filters.

[0004] DE 1 978 475 U discloses a unit for adjusting the axis of a camera lens with respect to the image plane. A clamping ring is provided which has two slits in the radial direction and an eccentrically rotatable part with a threaded bore. A fixing screw is provided to be fastened in the front plate of the camera housing and in the threaded bore.

[0005] DE 10 2015 114 198 B4 describes a camera housing comprising a housing body having an image sensor. The image sensor is arranged in the camera housing on an image sensor plane. The camera housing comprises a lens opening formed in the housing body and a receiving device for the lens. The lens is attachable in the imaging axis of the image sensor. The lens stop surface defines the position of the objective lens at a predetermined distance from the image sensor plane of the image sensor along the imaging axis. The camera housing comprises a receiving tube having a fastening device for the lens and a first contact surface. Further, a spacer ring having a defined signal is provided or a friction-acting pressing connection is formed between the receiving tube and the mounting flange such that the objective lens and the receiving tube are fixed at a predetermined distance with respect to the image sensor plane.

[0006] DE 10 2015 114 203 B4 discloses a camera housing and a lens system for a camera comprising a lock for locking the lens in a fixed position with respect to the image sensor plane. The lock includes a stop member connected to the lens or the lens mount and an elastic element arranged between the stop member and the lens mount or between the stop member and the lens. The elastic element is pressed between the stop member and the mount or between the stop member and the lens to lock the lens in a fixed position. The stop member functions as a counter nut which is screwed onto the outer thread of the lens mount using an inner thread.

[0007] Known prior art solutions have the drawback that, for cost and space reasons, they provide insufficient protection against misalignment, do not allow the lens to be set in front of the image sensor, or are too complex for miniaturization. SUMMARY OF THE INVENTION

[0008] The object of the present invention is to provide an improved camera designed for simple, inexpensive, effectively safe flange focus lens adjustment for a lens mount on the camera side, which is precise, miniaturized, and can be universally operated and universally integrated.

[0009] This object is achieved by a camera having the features of claim 1. Preferred embodiments are disclosed in the dependent claims.

[0010] The camera comprises a locking element having a fixed outer contour designed to engage in one of the threads of a threaded opening or a threaded tube. The locking element is displaceable in a direction other than the circumferential degree of freedom and the degree of freedom in the insertion direction of the lens. The locking element is arranged on the camera so as to engage with the thread in a position displaced at an angle with respect to the degree of freedom.

[0011] The fixed outer contour of the locking element engages in one of the threads of the threaded opening of the camera body or the threads of the threaded tube of the objective lens. The locking force due to the engagement is caused by displacing the locking element in a specific direction. The specific displacement direction is at an angle with respect to the degrees of freedom of the objective lens screwed into the threaded opening of the camera body. From this, the locking element is not displaced in any case in the free direction of the objective lens, i.e., in the rotational direction around the circumference of the threaded tube and in the insertion direction of the objective lens, for example, along the optical axis of the objective lens in the image sensor of the camera. Displacing the locking element in any direction other than the degrees of freedom of the objective lens has the effect that the objective lens is not displaced with respect to the image plane of the image sensor in one of its free directions when the locking element is fastened. Further, even in the locked / fastened state of the locking element, the objective lens is fixed in its position because any force on the objective lens in its degrees of freedom does not loosen the locking force of the locking element.

[0012] For example, the vibration force on the objective lens or the camera housing is reliably canceled by the locking force of the locking element due to the displacement of the locking element and its fixed outer contour at an angle with respect to the degrees of freedom of the objective lens.

[0013] In contrast, a counter nut screwed onto the threaded tube of the objective lens is movable in the degrees of freedom of the objective lens and applies a pressing force in the direction of the optical axis of the objective lens, i.e., in one of the degrees of freedom of the objective lens. Such a counter nut can loosen alone due to the vibration force. The rotation of the counter nut can cause the rotation of the threaded tube of the objective lens, and thus, a change in the set focus.

[0014] Based on the simple operation and extensive use of the threaded tube of the objective lens for adjusting the flange focal length, a locking element having a fixed outer contour designed to engage with one of the threads and be displaceable at the angle of freedom of the objective lens improves the precise centering of the objective lens while avoiding tilting and provides highly reliable safety regardless of the range size used. The flange focal length can be adjusted in the same manner as in the prior art by screwing the unit into or out of the lens screwed into the threaded tube. During the process, the threaded tube is circumferentially guided and precisely centered so that the thread or the lens or an external force on the thread does not cause tilting, interference, or misalignment.

[0015] Subsequently, in order to reliably prevent any movement of the threaded tube, the locking element is connected to the shape of the threaded tube, or the thread of the threaded opening forms a direction that does not coincide with any of the degrees of freedom of the threaded tube.

[0016] The locking element can be displaceably arranged adjacent to the threaded opening on the camera housing.

[0017] The locking element can be mounted on the camera housing in a direction transverse to the circumferential direction of the threaded opening, radially in the direction of the optical axis, and / or tangentially to the threaded opening.

[0018] The thread of the threaded opening of the camera housing can be interrupted by a recess. The locking element can be displaceably arranged in the recess. The fixed outer contour of the locking element can be curved corresponding to the contour of the thread of the threaded opening and continue the thread in the interrupted recess.

[0019] From this, while maintaining the centering of the objective lens in the camera housing on the optical axis of the imaging device, a part of the connection shape of the contact surface between the camera housing and the objective lens can be interrupted and modified so that the locking element can function, for example, perpendicularly relative to the desired movement direction of the threaded tube.

[0020] The locking element can be coupled to a clamping element movably mounted on or in the camera housing. This movable clamping element can be coupled to the locking element for linear displacement of the locking element. From this, an additional clamping element movable by the operator is provided to displace the locking element by the movement of the clamping element.

[0021] The clamping element can be coupled to the locking element via a spring element. From this, the clamping element is not directly connected to the locking element but is indirectly connected via an intermediate spring element. The spring element can be arranged between the clamping element and the locking element.

[0022] The spring element has the advantage of inducing a specific force defined by the spring characteristic on the locking element. The displaced force applied to the locking element is thus independent of the tolerances of the clamping element, which can vary due to the vibration forces acting on the clamping element.

[0023] The clamping element can be designed to include a lever arm pivotally mounted on the camera housing. The clamping element can include an eccentrically shaped actuating section designed to apply a force that causes displacement of the locking element by the clamping element when the lever arm is pivoted.

[0024] The lever arm can be easily handled by the operator after setting the objective lens at a precise position on the imaging surface of the imaging sensor. Fixing the objective lens by pivoting the lever arm is easy without touching or rotating the objective lens.

[0025] The locking element can comprise a threaded bore. The clamping element can be a clamping screw rotatably mounted in the threaded bore of the locking element. The clamping screw can be arranged to be supported on the camera housing in order to apply a force to the locking element.

[0026] Rotation of the clamping screw can be easily effected by a screwdriving tool. The clamping screw can be provided with a slot, cross slot, hex socket, or Torx profile etc. in the screw head. Such a shaped fitting profile in the screw head is accessible from the outside of the camera housing for the screwdriving tool.

[0027] The camera housing can comprise a threaded bore, and the clamping element is a clamping screw rotatably mounted in the threaded bore of the camera housing. The clamping screw is configured to apply a force to the locking element when screwed into the threaded bore, and can be linearly displaced in the extending direction of the threaded bore and the clamping screw towards the locking element, or vice versa.

[0028] The clamping screw can be rotatably mounted in the threaded bore so as to be displaceable radially towards the optical axis. The threaded bore for receiving the clamping screw has an extending direction radially towards the optical axis. From this, in this embodiment, the clamping screw provides a locking force radially towards the optical axis, i.e., radially on the threaded bore of the threaded tube of the objective lens. This direction is perpendicular to the degrees of freedom of the threaded tube of the objective lens.

[0029] The clamping screw can be rotatably mounted in a threaded bore so as to be displaceable in a tangential direction with respect to the threaded opening. The threaded bore for receiving the clamping screw has an extension direction in the tangential direction with respect to the threaded opening. In this embodiment, the clamping screw applies a clamping force to the locking element and a displacement in the tangential direction with respect to the circumference (circle) of the threaded bore. In this embodiment also, the displacement and the clamping force are applied perpendicular to the free direction of the objective lens.

[0030] The present invention will be described as an illustrative embodiment with reference to the accompanying drawings.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

DETAILED DESCRIPTION OF THE INVENTION

[0032] FIG. 1 shows a side sectional view of a camera 1 including a camera housing 2 and a lens 3, i.e., an objective lens or a lens unit. The lens 3 includes a threaded tube 10 on a tubular housing 5. The tubular housing 5 incorporates at least one lens element 6 to form an objective lens. The threaded tube 10 is screwed into a threaded opening of the camera housing 2 at a desired back focal distance B with respect to the image plane IP of the image sensor 7 housed in the camera housing 2. The image sensor 7 having the image plane IP is disposed at a specific distance from the camera front surface CP. The distance between the camera front surface CP and the image plane IP is fixed by the design of the camera housing 2 that houses the image sensor 7 and is called the flange back F.

[0033] The optical light path 8 from the point P of light passes through the lens element 6 of the objective lens 3 and reaches the photosensitive element of the image sensor 7. In order to provide a sharp focus of the point P of the light source on a specific sensitive point of the image sensor 7 on the image plane IP, the back focal distance of the objective lens 3 requires precise adjustment. The adjustment can be achieved by screwing the lens 3 into the threaded opening of the camera housing 2 using the threaded tube 10 along the optical axis OA until a sharp image captured by the image sensor 7 is achieved. The back focal distance B must be fixed when using the camera 1.

[0034] To lock the lens 3 at a focal position set with respect to the image plane IP, a locking element displaceable by a clamp screw 9 is provided in the camera housing 2. The camera housing 2 includes a threaded opening 14 at the front of the camera housing 2. The threaded opening 14 includes a thread F having a thread flank (ridge) spirally wound around the optical axis OA.

[0035] The clamping screw 9 is rotatably mounted in the threaded bore and can be displaced radially in the direction of the optical axis OA. From this, rotating the clamping screw 9 causes the locking element coupled to the clamping screw 9 to be displaced radially towards the optical axis OA, and vice versa.

[0036] FIG. 3 shows a side sectional view having a notch area of the locking element 12.

[0037] The threaded tube 10 of the objective lens is screwed into the corresponding inner thread 13 in the threaded opening 14 of the camera housing 2 using its outer thread 4. Due to the cylindrical design of the threaded opening 14 with the inner thread 13 in the camera housing 2, the threaded tube 10 of the objective lens 3 and the objective lens housing 5 screwed onto the inner thread 11 of the threaded tube 10 provide a precise position centered on the optical axis OA.

[0038] The inner thread 13 of the threaded opening 14 is interrupted by a recess, for example, the top of the camera housing 2 is shown. The locking element 12 is displaceably arranged in the recess. The locking element 12 has a fixed outer contour 15 that is curved and corresponds to the contour of the inner thread 13 of the threaded opening 14. The threaded fixed outer contour 15 continues the inner thread 13 in the interrupting recess of the threaded opening 14. From this, the outer thread 4 of the threaded tube 10 is also screwed onto the fixed outer contour 15 of the locking element 12.

[0039] To ensure the set distance of the objective lens 3 with respect to the image plane IP of the imaging element 7, the clamp screw 9 interacts with the locking element 12 to tighten the engagement of the fixed contour 15 by the thread 4 of the threaded tube 10. The locking element 12 is, on the one hand, precisely and anti-rotationally guided in the threaded opening 14 along the axis XS, i.e., radially towards the optical axis OA, and on the other hand, is designed to have a mating surface that engages with the outer thread 4 of the threaded tube 10. The mating surface of the fixed contour 15 is displaced perpendicular to the thread 4 of the threaded tube 10 by tightening the clamp screw 9 on the axis XS, thereby interrupting the thread shape around the threaded opening 14. This reliably prevents independent and / or unintentional adjustment of the threaded tube 10, i.e., the objective lens 3. The fixing effect is produced by both form fitting and press fitting.

[0040] Optionally, additional internal centering of the objective lens 3 on the camera housing 2 with respect to the optical axis OA is provided by the contact surface 16 on the support element. The contact surface 16 can be integrally formed within the camera housing 2. The support element can be tubular to provide the contact surface 16 on its outer circumference for the inner tubular surface of the threaded tube 10. This ensures that the lens 3 is concentric with the center of the imaging surface of the imaging element 7 on the optical axis OA.

[0041] The cylindrical design of the internal centering by the support element and its contact surface 16 enables both precise centering of the threaded tube 10, which is also useful for the attachment of the lens 3, and simple, miniaturizable, and efficient mechanical manufacturing.

[0042] To set the flange focal length, the lens 3 is here screwed into the threaded tube 10 and then rotated clockwise or counterclockwise as a unit while the camera housing 2 is operating until the desired sharpness is achieved. Then, the clamp screw 9 is tightened and the locking element 12 is tightened onto the thread 4 of the threaded tube 10, fixing the objective lens 3 in its focal position with respect to the imaging element 7.

[0043] Depending on the geometric shape of the camera housing 2, the clamping screw 9 always remains accessible from the outside for the operator, regardless of the diameter of the lens 3 used.

[0044] The screw head of the clamping screw 9 has a shape-fitting contour for interacting with a screwdriver, i.e., an internal hexagon, a flat slot, a cross slot, a Torx contour, etc., as shown.

[0045] The clamping screw 9 is screwed into the threaded bore of the locking element 12. The screw head is arranged in a shape-fitting position below the upper cover of the camera housing 2. From this, the clamping screw 9 is supported on the camera housing when displacing the locking element 12 by rotating the clamping screw 9 in the threaded bore of the locking element 12.

[0046] Figure 4 presents a perspective sectional view of a quarter cut in the area of the locking element 12. The locking element 12 is arranged displaceable in the horizontal direction Y in the camera housing 2. The clamping screw 9 is rotatably mounted in the threaded bore 17 in the camera housing 2. When rotating the clamping screw 9 about the axis YS, the clamping screw 9 is linearly displaced in the horizontal direction Y and applies pressure on the locking element 12. Due to the horizontal displacement of the clamping screw 9, the locking element 12 is displaced in the horizontal direction Y, i.e., tangentially with respect to the threaded opening 14 and the threaded tube 10 of the objective lens 3. From this, the mechanical action direction of the clamping screw 9 is, instead of the normal direction shown in Figure 3, for example, the tangential direction along the axis YS.

[0047] In this case, the precise and anti-torsion locking element 12 guided in the flange along the axis YS is not clamped vertically after setting the sharpness of the camera, but is clamped tangentially to the threaded surface of the threaded tube 10 via the clamping screw 9. The clamping screw forms a clamping element that interacts with the locking element 12.

[0048] By destroying the geometric shape around the flange and inducing a force onto the thread flange of the threaded pipe 10 through the conforming geometric shape of the fixed contour 15 of the locking element 12, the resulting effect is comparable to that explained in FIG. 3.

[0049] In addition, there are shape fits and press fits. Unintentional adjustments are reliably prevented while maintaining the integrity in the miniaturized camera.

[0050] FIG. 5 shows a rear view and FIG. 6 shows an inclined perspective front view of two different locking versions of the camera housing 2. It can be seen that the locking element 12 is inserted into a recess in the area of the inner thread 13 of the threaded opening. There is a gap between the locking element 12 and the camera housing 2, which allows displacement of the locking element in the horizontal direction YS shown in FIG. 5 and the vertical direction XS shown in FIG. 6.

[0051] In the embodiment of FIG. 3, the gap would be radial at the upper or lower part of the locking element 12 to allow radial displacement of the locking element 12.

[0052] FIG. 6 presents the fixed contour 15 of the locking element 12, which corresponds to the adjacent helically wound thread flange of the inner thread 13 of the threaded opening 14. The thread flange of the fixed contour 15 of the locking element 12 is offset inwards with respect to the thread 13 of the threaded opening 14. This is achieved by displacing the locking element 12 in the recess formed by the interruption of the threaded opening 14.

[0053] FIG. 7 is a perspective cross-sectional view of a quarter cut in the area of the locking element 12 of the camera housing 2. The design is the same as the embodiment shown in FIG. 3.

[0054] In contrast to this design, there is no additional internal support element with a contact surface 16. The orientation of the threaded tube 10 in the objective lens 3 along the optical axis OA is protected by the mating surface pair 19 between the threaded opening 14 in the camera housing 2 and the corresponding outer threads 4 of the threaded tube 10.

[0055] The focus of this embodiment lies in alternative centering. Sometimes, it may be necessary to keep the area of the optical axis OA, particularly the area between the image sensor 7, the filter element 18, and the lens flange, as free of components as possible. To implement the adjustability and reliable locking described above, even if the objective lens 3 involves precise lens centering, the threaded tube 10 can also be centered at its outer diameter. For this purpose, it is sufficient to extend the flange, for example, the length of the threaded opening 14, forward to the extent that it surrounds at least the mating surface 19 surrounding the threaded tube 10 so that the threaded tube 10 is precisely guided and centered. From this, the front flange section of the outer threads 13 of the camera housing 2 at the front side of the threaded opening 14 and the flat outer surface (mating surface 19) of the tubular objective lens 3 in its threaded tube 10 have the same function as the inner support element with a contact surface 16 at the inner diameter in FIG. 3.

[0056] This type of centering prevents tilting caused by mechanical forces applied in the vertical and tangential directions by the locking element 12.

[0057] FIG. 8 presents an inclined perspective front view of the camera housing 2 having a locking element 12 displaceably mounted in the recess 17 of the threaded opening 14. It is similar to the embodiment shown in FIG. 6 except for the square opening for the filter element 18 facing the image sensor 7.

[0058] FIG. 9 presents a perspective cross-sectional view of another embodiment of the quarter cut camera 1 during the location of the lock element 12. The operation of this embodiment is the same as that of the embodiment of FIG. 4. However, no tool is required. The clamping element that interacts with the lock element 12 is provided by a lever arm 20 instead of a clamping screw 9. The pivoting lever arm 20 in the shown locked position about the pivot axis 21 causes a force to be applied to the lock element 12 in the horizontal displacement direction YS.

[0059] In this embodiment, an optional spring element 22 is provided between the lever arm 20 and the lock element 12.

[0060] Before the back focus can be set or adjusted, the lever arm 20 must first be folded upwards, for example, by 90°. This releases the lock element 12, and the lock element 12 engages with the threads of the internally centered threaded tube 10 via the conformal geometric shape of the fixed outer contour 15. After displacing the lock element 12 to the open position where the threads of the fixed outer contour 15 are aligned with the outer threads 4 of the threaded tube 10, the threaded tube 10 can be rotated either alone or as a unit with the objective lens 3 screwed into the inner threads 11, from which the flange focal length can be adjusted.

[0061] As soon as the desired focus is achieved, the lever arm 20 is folded back again, whereby the lock element 12, which is precisely guided and non-rotatably in the flange along the axis YS, is clamped tangentially against the threaded surface of the threaded tube 10.

[0062] The lever arm 20 comprises an eccentric operating section 23 adjacent to the pivot axis 21 for varying the distance between the eccentric-shaped operating section 23 and the horizontally displaceable lock element 12 when pivoting the lever arm 20.

[0063] Optionally, the force applied from the lever arm 20 to the locking element 12 can be adjustably guided via a spring 21, as shown in FIG. 10.

[0064] The force can also be applied directly by the lever arm 20 without such an additional spring element 24. In the embodiment shown in FIG. 10, the springs 24 are provided in the displacement direction YS on both sides of the locking element 12. From this, one spring element 24 is positioned between the eccentric operating section 23 of the lever arm 20 and the locking element 12. The second optional spring element 24 is provided on the opposite side at a distance from the lever arm 20 between the locking element 12 and the camera housing 2.

[0065] To keep the overall size small, it is preferable that a screw forms the rotation axis 21 of the lever arm 20 by connecting the front part of the camera 1 to the remaining part. From this, the pivot axis 21 is formed by fastening elements having a second function of the fastening screws 25 provided at the four corners of the camera housing 2.

[0066] FIG. 11 is similar to the embodiment of FIG. 9, but presents a perspective cross-sectional view of the camera housing 2 with outer centering of the threaded tube 10 as shown in FIG. 7, instead of inner centering by an inner support element with a contact surface 16 as shown in FIG. 3.

[0067] The mechanical locking mechanism enables both precisely and easily setting the flange focus lens and securely locking it with little effort. The mechanical design reliably prevents unintentional loosening and adjustment of the set back focus.

[0068] In addition to the improved locking, for example, the tilt caused by the operation of the lock is prevented while precisely aligning the lens on the optical OA of the image sensor 7 with the threaded tube 10.

[0069] Various embodiments demonstrate that the technical solution can be easily implemented and adapted for multiple uses, and thus can be quickly and easily integrated into a wide variety of camera shapes.

[0070] Furthermore, alternative embodiments illustrate that the technical solution can be adapted in a flexible manner such that it can be operated in a user-friendly manner with or without the use of tools, thus enabling focus adjustment to always be easily accessible and convenient when using lenses of any diameter without any problems.

[0071] Finally, all elements can be easily and cost-effectively integrated or retrofitted into a miniaturized camera.

Claims

1. A camera (1), comprising: - a camera housing (2) having a threaded opening (14) for receiving a lens (3); - a lens (3) having an optical axis (OA), the lens (3) having a threaded tube (10) for screwing and the threaded opening (14) of the camera housing (2), wherein the lens (3) can be screwed into the threaded opening (14) movably in the circumferential degree of freedom of the threaded tube (10) and in the screwing degree of freedom of the lens (3) aligned in the direction of the optical axis (OA) of the lens (3); - a locking element (12) for fixing the lens (3) screwed into the threaded opening (14) in the camera housing (2). In the camera (1), - the locking element (12) has a fixing contour (15) designed to engage in one of the threaded opening (14) or the thread (F) of the threaded tube; - the locking element (12) is displaceable in a direction other than the circumferential degree of freedom and the degree of freedom in the insertion direction of the lens (3), and the locking element (12) is arranged on the camera (1) so as to engage with the thread (F) at a position displaced by an angle with respect to the degree of freedom. The camera (1) is characterized in that.

2. The camera (1) according to claim 1, characterized in that the locking element (12) is displaceably arranged adjacent to the threaded opening (14) in the camera housing (2).

3. The camera (1) according to claim 2, characterized in that the locking element (12) is mounted on the camera housing (2) in a direction transverse to the circumferential direction of the threaded opening (14), radially in the direction of the optical axis (OA), and / or tangentially to the threaded opening (14).

4. The thread (F) of the threaded opening (14) of the camera housing (2) is interrupted by a recess, the locking element (12) is displaceably arranged in the recess, and the fixing contour (15) of the locking element (12) which is curved corresponds to the contour of the thread (F) of the threaded opening (14) and continues the thread (F) in the interrupting recess. The camera (1) according to any one of claims 1 to 3 is characterized in that.

5. The lock element (12) is coupled to a clamping element movably mounted on or in the camera housing (2), characterized in that it is coupled to the lock element (12) for a linear displacement of the lock element (12). The camera (1) according to any one of claims 1 to 4.

6. The clamping element is coupled to the lock element (12) via a spring element (24), and the spring element (24) is arranged between the clamping element and the lock element (12). The camera (1) according to claim 5.

7. The clamping element comprises a lever arm (20) pivotally mounted on the camera housing (2), the clamping element comprises an eccentric operating section (23), and the operating section (23) is designed to apply a force to cause displacement of the lock element (12) by the clamping element when the lever arm (20) is pivoted. The camera (1) according to claim 5 or 6.

8. The lock element (12) comprises a threaded bore, and the clamping element is a clamping screw (9) rotatably mounted in the threaded bore of the lock element (12), and the clamping screw (9) is configured to be supported on the camera housing (2) to apply a force to the lock element (12). The camera (1) according to claim 5 or 6.

9. The camera housing (2) comprises a threaded bore, and the clamping element is a clamping screw (9) rotatably mounted in the threaded bore of the camera housing (2), and the clamping screw (9) is configured to apply a force to the lock element (12). The camera (1) according to claim 5 or 6.

10. The clamping screw (9) is rotatably mounted in the threaded bore so as to be displaceable radially towards the optical axis (OA), and the threaded bore for receiving the clamping screw (9) has an extension direction radially towards the optical axis (OA). The camera (1) according to claim 8 or 9.

11. The clamping screw (9) is rotatably mounted in the threaded bore so as to be displaceable in a tangential direction with respect to the threaded opening, and the threaded bore for receiving the clamping screw (9) has an extending direction in a tangential direction with respect to the threaded opening (14), the camera (1) according to claim 8 or 9, characterized in that.

Images