Anti-glare device for a camera

Abstract

The present invention relates to a glare shield for a camera, in particular a studio camera, which has a lens, in particular a box lens. The glare shield comprises a screen to be arranged next to, and in particular above, the lens in the direction of recording of the camera to be used, for shielding the lens against backlighting, and a holding device by means of which the screen can be connected to the camera. The glare shield also has a drive, in particular a linear drive, by means of which the screen, guided by a guide device, can be displaced relative to the holding device, preferably in the direction of recording. Furthermore, the invention relates to a camera, in particular a studio camera, with a lens, preferably a box lens, and such a glare shield.The invention further relates to a method for shielding a camera lens, preferably designed as a box lens, in particular a studio camera, against backlighting by means of a glare shield, preferably designed as described above, comprising a shield connected to the camera by means of a holding device. The shield, guided by a guide device, is moved relative to the holding device by means of a drive of the glare shield, in particular a linear drive.

Description

[0001] The present invention relates to an anti-glare device for a camera, particularly designed as a studio camera, which has a lens, in particular a box lens, wherein the anti-glare device comprises a screen to be arranged next to, in particular above, the lens, viewed in the recording direction of the camera to be used in operation, for shielding the lens against backlight, and a holding device by means of which the screen can be connected to the camera. Furthermore, the present invention relates to a camera, in particular a studio camera, with a lens preferably designed as a box lens. Furthermore, the present invention relates to a method for shielding a lens, preferably designed as a box lens, of a camera, in particular a studio camera, against backlight by means of an anti-glare device which comprises a screen connected to the camera by means of a holding device.

[0002] In cameras of the type mentioned above, unwanted lens reflections or lens flares can occur due to backlighting and / or stray light. Light entering the lens, especially sunlight, is reflected by the lenses and / or lens mounts and thus reaches the image sensor or film. This incoming light can significantly impair image and / or video quality. For example, it can cause image distortion in the form of lens flares. Due to their high brightness, these lens flares also lead to a detrimental reduction in contrast.

[0003] In practice, this is counteracted with anti-glare devices of the type mentioned above. A makeshift solution consisting of a screen made of cardboard, for example, and a holding device designed, for example, as a rubber band, is often used. However, these anti-glare devices generally only provide relatively limited protection of the lens against backlight. Such anti-glare devices are also relatively insecurely attached and comparatively resistant to environmental influences. Furthermore, these anti-glare devices are inflexible with regard to changing circumstances, in particular changing camera settings, camera configurations, and / or changing lighting conditions.

[0004] It is therefore an object of the present invention to provide an anti-glare device in which the disadvantages of the prior art are at least partially reduced. It is also an object of the present invention to provide a camera in which the disadvantages of the prior art are at least partially reduced. Furthermore, it is an object of the present invention to provide a method for shielding a camera lens in which the disadvantages of the prior art are at least partially reduced.

[0005] The object is achieved by an anti-glare device according to claim 1, by a camera according to claim 21 and by a method according to claim 22. Advantageous further developments of the invention can be found in the respective dependent claims referring back to it, the following description and the figures.

[0006] According to the invention, the anti-glare device has a drive, in particular designed as a linear drive, via which the screen guided by means of a guide device can be displaced relative to the holding device, preferably in the receiving direction.

[0007] The anti-glare device according to the invention is thus designed to be flexible and adaptable to changing circumstances, in particular changing lighting conditions and / or changing camera settings. The anti-glare device is also particularly suitable as a retrofit solution for existing cameras and / or lenses.

[0008] Studio cameras include both stationary and electronic cameras whose position can be changed during operation for professional use, for example in studios and / or stadiums.

[0009] A box lens, also called a box optics and / or broadcast lens, is a comparatively large and heavy camera lens with high image quality and high contrast. Box lenses typically have a substantially rectangular, particularly square, cross-section when viewed in their recording direction.

[0010] The shooting direction means a main shooting direction that is directed away from a shooting side of the lens during camera operation, i.e. towards a subject to be shot by the camera, and that lies in a longitudinal central axis of the lens.

[0011] The drive is a non-manual drive, i.e. the power required to move the umbrella is generated by a non-manual drive means, e.g. an electric motor.

[0012] A screen to be arranged next to the lens is a screen that is to be arranged above, below and / or to the side, i.e. to the left or right, of the lens when viewed in the direction of the photograph.

[0013] In this case, a shield means a shielding element extending over a surface, the surface area of ​​which is many times greater than its thickness, i.e. its extension perpendicular to the main surface.

[0014] The umbrella is preferably made of a weather-resistant and / or opaque material, in particular a metal, plastic, composite material, or combinations thereof. In the case of a comparatively lightweight material, such as plastic, fiberglass-reinforced plastic (GRP), or carbon-fiber-reinforced plastic (CFRP), the drive can be comparatively small, and a relatively rapid displacement of the umbrella can be achieved due to its low inertia. Advantageous stability and durability can be achieved by using a metal, in particular aluminum and / or stainless steel.

[0015] The shielding of the lens means in particular a shielding of a recording-side aperture of the lens.

[0016] Backlight refers to light, especially sunlight, entering the lens from the opposite direction to the recording direction, especially from above. In this case, "incoming from above" means a direction directed toward the background, for a camera that is usually positioned parallel to the background. It is understood that a shield is one that still allows recording but largely prevents backlight from entering the lens or its lens(es).

[0017] To ensure a secure connection between the umbrella and the camera, the holding device is preferably firmly connected to the camera.

[0018] The linear drive is preferably designed as a linear motor. This allows for high dynamics and precision in the movement of the screen. A linear drive is also comparatively low-wear and can be easily connected to a control system, preferably an existing one. It goes without saying that a linear drive for the glare protection device is primarily electrically operated.

[0019] In a preferred embodiment of the invention, the shield has a projection relative to the holding device directed in the camera's recording direction, in particular, wherein the projection can be changed by moving the shield via the drive. During camera operation, the projection is preferably arranged in front of the camera, in particular in front of the lens, in the recording direction. Thus, the shielding of the lens can be easily adjusted by changing the projection.

[0020] In a further preferred embodiment of the invention, the glare protection device has a control unit connected to the drive, by means of which the drive can be controlled to move the screen. This enables controlled movement of the screen. Manual operation of the drive using appropriate control elements can be omitted or used only for readjustment.

[0021] The control unit preferably has an interface for connection to the camera, which is designed to receive status information, in particular zoom information, from the camera. Status information refers to information concerning the shielding, the current operating status of the camera, in particular the current zoom, properties of the lens to be used, and / or the orientation of the camera relative to light sources, in particular the sun. Zoom information refers in particular to analog and / or digital information regarding the current zoom settings of the camera. This enables automated shifting of the shield depending on the status information.

[0022] In a further preferred embodiment of the invention, the anti-glare device has at least one measuring device connected to the control unit, in particular a position sensor and / or light sensor. The measuring device is designed in particular to record status information of the anti-glare device, in particular the position of the screen relative to light sources and / or the current lighting conditions. This status information can thus be taken into account when controlling the screen.

[0023] The control unit preferably comprises a data memory with a control program designed to select control information for controlling the drive depending on the status information, in particular in real time, and to control the drive according to the control information, in particular in real time. The status information can be the status information of the camera and / or the anti-glare device itself. The selection of control information includes both selecting from predefined information and calculating new information. Real-time operation of the control unit is understood to mean operation in which the control unit is constantly ready for operation and the selection of the control information and the control of the drive follow immediately after receipt of the status information. The control unit can thus react almost simultaneously to changed status information.This simplifies automated movement of the screen depending on status information.

[0024] Preferably, predefined values ​​for moving the screen, particularly depending on the camera lens, are stored in the control program. These values ​​can be selected by the control program depending on the camera lens to be used. The values ​​are configured, in particular, as limits of the screen's travel range depending on the lens zoom. This ensures that even with a changing lens, such as a different lens type with a different maximum zoom, the greatest possible shielding is achieved without impairing the camera recording.

[0025] In a preferred embodiment, the anti-glare device is designed to shield the lens depending on the zoom settings in the case of status information in the form of zoom information. The control unit is designed in particular to move the screen in the recording direction as the zoom increases. This increases the shadow cast by the screen and improves shielding against backlight. Since the recording area or image section of the camera is reduced as the zoom increases, the screen moved in the recording direction does not impair the camera recording. The screen moved in the recording direction is still not visible in the image and / or video. Preferably, the control unit is also designed to move the screen opposite to the recording direction as the zoom decreases. This means that the screen is moved out of the now larger recording area or image section.It extends beyond the camera's field of view and does not affect the image and / or video. This allows for the greatest possible shielding of the lens at any zoom setting without affecting the camera image.

[0026] In a preferred embodiment of the invention, the control unit has an operating unit for reading and / or setting at least one parameter of the control program. The operating unit preferably comprises at least one display means, in particular designed as a display, and at least one input means, which is in particular formed by the display. The parameter is in particular a starting point of a travel range of the screen, an end point of a travel range of the screen and / or an indication of the camera lens to be used. Predefined values ​​for moving the screen, in particular depending on the camera lens, are preferably stored in the control program and can be selected by an operator by selecting the lens type using the operating unit. The values ​​are in particular designed as limits of the travel range of the screen depending on the lens zoom.This ensures that even when the lens changes, the greatest possible shielding is achieved without impairing the camera image. This makes the glare protection device particularly flexible. Furthermore, the glare protection device is easy to operate.

[0027] The operating unit is preferably designed to display the presence of an input signal from the camera, the status of the glare protection device, and / or the current position of the screen, particularly relative to the travel range limits of the screen. To facilitate operation, the current position of the screen, particularly relative to the travel range limits, is preferably visualized, particularly graphically, by the operating unit. Preferably, the glare protection device can be taught by means of the operating unit to camera lens types for which no predefined values ​​regarding screen displacement are yet available. For this purpose, the start and end points of the travel range of the screen, particularly relative to the camera zoom, can be set by means of the operating unit. In particular, the operating unit is designed to adjust the travel speed of the drive and the speed profile or characteristic curve of the drive.The screen can therefore be moved very flexibly.

[0028] In a further preferred embodiment of the invention, the guide device is designed as a linear guide, in particular as a profiled rail guide. A longitudinal axis of the guide device and a longitudinal axis of the drive are arranged, in particular, parallel to one another. Preferably, the guide device is arranged next to the drive when viewed from above, in particular transversely to the recording direction. This achieves a comparatively flat design of the anti-glare device. Profile rail guides are relatively wear-resistant. In addition, such guides generate comparatively little vibration and noise, so that the recording quality of the camera is not impaired. These guides also enable the screen to be moved relatively quickly, which is advantageous for real-time control.

[0029] The guide device preferably comprises a guide carriage to which the screen is attached. The guide carriage is preferably guided, in particular linearly, displaceably on a guide element of the guide device, which is designed in particular as a profile rail. The screen is thus at least indirectly attached to the guide carriage and guided in a simple manner.

[0030] The glare protection device preferably has at least one adapter element connecting the screen to the guide device and to the drive. The connection to the drive is made indirectly or directly, depending on where the drive side is arranged. The adapter element preferably forms a slide with the guide carriage or on its own, which is arranged so as to be displaceable, in particular in the receiving direction. The adapter element is preferably arranged between the screen and the guide device and between the screen and the drive. The screen is thus connected to the drive and to the guide device in a structurally simple manner. The use of an adapter element, which can also be designed in several parts, improves the options for arranging the screen on the guide device.

[0031] In particular, the screen is detachably connected to the holding device. For this purpose, the screen is preferably connected to the holding device, in particular the adapter element, via at least one screw connection, clamp connection, and / or similar. Thus, the screen can be easily replaced and / or disassembled for transporting the anti-glare device.

[0032] In a preferred embodiment of the invention, the guide device, in particular the drive, is pivotally connected to the holding device. This facilitates the preferably existing angular adjustability of the umbrella.

[0033] In a further preferred embodiment of the invention, the glare protection device has an adjustment device that connects the guide device, in particular also the drive, to the holding device in an angle-adjustable manner. Thus, the angle of the screen relative to the camera is also adjustable, allowing the screen to be flexibly adjusted.

[0034] Preferably, the guide device, in particular also the drive, is connected to the holding device so that it can be angle-adjusted relative to the holding device about an axis running horizontally and transversely to the camera's shooting direction. The screen can thus be tilted from a position parallel to the shooting direction with its leading end in the shooting direction, particularly downwards, i.e., in the nadir direction, or upwards, i.e., in the zenith direction. This allows the screen to be flexibly adjusted. The screen's shielding is particularly effective against shallow backlighting, such as when the sun is low in the sky.

[0035] The adjustment device preferably comprises a first part, particularly designed as a threaded rod, and a second part movable relative to the first part, which in particular has a threaded bore. The guide device and the drive are preferably supported on the holding device via the adjustment device. The angle of the screen to the camera can be changed by a relative movement of the first part to the second part, for example, a rotation of the threaded rod and a resulting movement of the second part comprising the threaded bore along the threaded rod. The adjustment device can be manually operable or driven for automatic angle adjustment.

[0036] Preferably, the holding device extends circumferentially around the camera, in particular around the lens, as viewed in the camera's shooting direction. This ensures particularly secure attachment of the umbrella to the camera.

[0037] In a preferred embodiment of the invention, the holding device comprises at least one attachment for clamping the holding device to the camera, in particular the lens. When arranged on top of the camera, i.e., on the side of the camera facing in the zenith direction, the attachment has, in particular, an inverted U-shape. The attachment preferably accommodates the guide device and the drive. Thus, the connection of the screen, the guide device, and the drive to the camera is comparatively secure.

[0038] In a further preferred embodiment of the invention, the attachment has at least one base that can be fixedly arranged to the camera in order to adapt to different camera widths, as well as at least two legs that are movably, in particular displaceably, connected to the base and that can be moved towards each other in particular to clamp the camera between them. The camera width here means the extension of the camera, in particular of the lens, transversely to the recording direction and parallel to the surface. In order to move the legs, they are connected to the base so that they can be moved transversely to the recording direction of the camera, in particular independently of one another. The legs preferably run vertically from the base, in particular downwards. For the movably connecting the legs to the base, the base has in particular at least one guide means, such as a rail, rod or similar, for the linear guidance of the legs.The anti-glare device can therefore be used for different cameras.

[0039] Preferably, the legs are connected at their respective ends facing away from the base by a connecting element, preferably a strap, that is particularly flexible in shape and in particular variable in length. The preferred flexibility of the connecting element allows it to be adapted to different camera shapes. The preferred length variability of the connecting element is advantageous for adapting to different camera sizes, in particular camera heights. The connecting element runs, in particular, at least in sections, along the side of the camera opposite the attachment and, together with the attachment, forms a circumferential holding device. The connection of the umbrella to the camera via the holding device is thus particularly secure and flexible.

[0040] The holding device preferably comprises at least two attachments spaced apart from one another in the camera's recording direction. This achieves improved force distribution and stability of the umbrella against tipping.

[0041] In a preferred embodiment of the invention, the holding device has centering means for centering the screen relative to the recording direction of the lens. A centered arrangement of the screen, viewed from above, means an arrangement of the screen centrally above the lens relative to a direction transverse to the recording direction. In particular, the preferably present legs of the attachment form the centering means, so that centering is achieved by moving the legs relative to one another. For this purpose, the holding device has, in particular, an adjustment means for each leg, such as an adjusting wheel or the like, with which the leg can be moved. The screen can thus be arranged symmetrically, and the shielding is improved.

[0042] In a further preferred embodiment of the invention, the screen, viewed from above, has an increasing width in a direction away from the camera, particularly in the recording direction. Viewed from above, the screen is, in particular, at least substantially trapezoidal in shape. Thus, the shape of the screen is adapted to the recording area of ​​the camera, which usually also becomes increasingly wider in a direction away from the camera. Shielding against backlight is also improved.

[0043] The screen preferably has a central section, which extends in particular flatly, as well as end sections, which extend in a direction transverse to the camera's recording direction and in particular also flatly, which extend at an angle to the central section, in particular downwards. "Downward" refers to a direction pointing towards a background. The end sections are angled in particular obliquely or perpendicularly to the central section. The screen is thus comparatively easy to manufacture. In addition, the angled end sections provide improved shielding, even against backlight that is incident from a flat surface and / or from the side.

[0044] The umbrella preferably comprises several umbrella parts. The umbrella parts can be arranged consecutively in the receiving direction, with the umbrella parts, in particular, at least partially overlapping when viewed from above. The umbrella parts are preferably designed to be telescopically extendable. Thus, the length of the umbrella in the receiving direction is variable, and the umbrella is particularly compact when retracted.

[0045] Alternatively or additionally, the umbrella can comprise several umbrella parts arranged one behind the other transversely to the receiving direction. The umbrella parts are preferably designed to be movable relative to one another transversely to the receiving direction, in particular to be pushed together or apart in a fan-like manner. Thus, the width of the umbrella can be variable transversely to the receiving direction, and the umbrella can be designed to be particularly compact when retracted. The umbrella parts can each be formed as a single piece, for example, as flat elements made of plastic or metal, or they can be constructed in multiple parts, for example, as a textile fabric stretched over a frame. Combinations of these umbrella parts are also conceivable.

[0046] The camera according to the invention, in particular a studio camera, with a lens preferably designed as a box lens, has an anti-glare device according to one of the embodiments described above or below. This provides the camera with improved protection against backlight. It is thus comparatively flexible in use and offers higher image quality.

[0047] In the method according to the invention for shielding a camera lens, preferably designed as a box lens, from backlight by means of an anti-glare device, preferably designed according to one of the embodiments described above or below, comprising a screen connected to the camera by means of a holding device, the screen, guided by a guide device, is displaced relative to the holding device via a drive of the anti-glare device, designed in particular as a linear drive. Thus, the method enables flexible shielding of the camera lens against backlight that can be adapted to changing circumstances.

[0048] The procedure is preferably - status information, in particular zoom information, is provided by the camera, - the status information is transmitted to a control unit, in particular a control unit of the anti-glare device, - selected by a control program of the control unit depending on the status information and - the drive for moving the screen shielding the lens is controlled by means of the control information from the control unit.

[0049] The zoom information can be received in analog and / or digital form. In the case of an optical camera zoom, the zoom information can contain information about the current focal length. Alternatively or additionally, in the case of a digital camera zoom, the zoom information can contain information about the current image section. Selecting control information means selecting from predefined information and / or calculating new information. This allows for automatic control and shifting of the screen depending on the status information without operator intervention.

[0050] Alternatively or in addition to providing status information of the camera, status information of the anti-glare device can be provided by the anti-glare device itself, in particular by a measuring device of the anti-glare device. This information is preferably transmitted to a control unit, in particular a control unit of the anti-glare device. A control program of the control unit selects control information depending on the status information, and the drive is controlled by the control unit to move the screen shielding the lens.

[0051] In a preferred embodiment of the invention, the projection of the screen in front of the camera is changed, particularly in real time, depending on status information of the camera and / or the anti-glare device, particularly in the form of zoom information. "In front of the camera" means, in particular, in front of the camera lens in the recording direction. Thus, the lens shield can be easily adjusted by changing the projection.

[0052] In a further preferred embodiment of the invention, a projection of the screen in front of the camera is increased when the camera zoom is increased and reduced when the camera zoom is decreased. Increasing the zoom means a zoom change in which an image section is reduced and the subject to be recorded appears closer to the viewer. When the zoom is increased, the screen is moved in the recording direction to increase the projection. Decreasing the zoom means the change in which the image section is enlarged and the subject to be recorded appears further away from the viewer's perspective. When the zoom is decreased, the screen is moved opposite to the recording direction to reduce the projection.

[0053] Further advantages and details of the invention can be found in the following description of the figures.

[0054] The figures show schematically: Fig. 1 a side view of a camera lens with anti-glare device according to the invention in a first operating position, Fig. 2 a front view of the object Fig. 1 towards II Fig. 1, Fig. 3 a perspective view of the object from Fig. 1, Fig. 4 the object from Fig. 1 in a second operating position, Fig. 5 a top view of the object Fig. 4 in direction V Fig. 4, Fig. 6 a front view of the anti-glare device according to the invention Fig. 1 towards II Fig. 1 in another operating position, Fig. 7 a plan view of a part of the article from Fig. 1 towards VII Fig. 1, Fig. 8 a sectional view of the object Fig. 7 in direction VIII-VIII Fig. 7, Fig. 9 a side view of the object Fig. 7 towards IX Fig. 7, Fig. 10 a detailed view of a part of the object Fig. 8 and Fig. 11 a perspective view of the object from Fig. 10.

[0055] Parts with the same or similar functions are provided with identical reference numerals where appropriate. The features and details of the invention described below may also be incorporated into the invention in combinations other than those shown in the exemplary embodiments.

[0056] Fig. 1 shows a glare protection device 2 for a camera designed in particular as a studio camera and only shown in dashed lines in Fig. 1, which has a lens 4, in this case a box lens. The glare protection device 2 has a screen 8, which is arranged next to the lens 4 when viewed in the recording direction 6 of the camera to be used in operation, for shielding the lens 4 from backlight. The recording direction 6 lies in the longitudinal central axis 7 of the lens 4. In the present case, the screen 8 is arranged above, i.e. adjacent to, the camera, in particular the lens 4, in a height direction 9 pointing away from a surface on which the camera to be used is usually located during operation.

[0057] The screen 8 can be connected to the camera, in particular to the lens 4, by means of a holding device 10. The anti-glare device 2 also comprises a drive 12, in particular designed as a linear drive (see Fig. 7), over which the guide device 14 (cf. Fig. 7) is displaceable relative to the holding device 10, preferably in the recording direction 6. Thus, the anti-glare device 2, as well as a camera or camera lens 4 equipped with such an anti-glare device 2, is flexible with respect to changing circumstances, in particular changing camera settings and / or changing lighting conditions.

[0058] The screen 8 has a projection 16 directed in the recording direction 6 of the camera relative to the holding device 10. Preferably, by moving the screen 8 via the drive 12 (cf. Fig. 7) the projection 16 is adjustable. Thus, the screen 8 was Fig. 4 is shifted in the recording direction 6, resulting in a larger projection 16' relative to the projection 16. Thus, the shielding of the lens 4 can be easily adjusted by different positions of the shield 8.

[0059] In the method according to the invention for shielding a lens 4 of a camera, in particular a studio camera, preferably designed as a box lens, against backlight by means of an anti-glare device 2 which comprises a screen 8 connected to the camera by means of a holding device 10, the lens 4 which is preferably designed as a box lens (cf. Fig. 7) guided screen 8 relative to the holding device 10 via a drive 12 designed in particular as a linear drive (cf. Fig. 7) of the glare protection device 2. The method thus also enables improved, flexible shielding of the lens 4.

[0060] Preferably, - provides status information from the camera, in particular zoom information, to the camera, - the status information to a control unit 18 (cf. Fig. 7 - 9), in particular a control unit 18 of the anti-glare device 2, - selected by a control program of the control unit 18 depending on the status information and - the drive 12 (cf. Fig. 7) for moving the screen 8 shielding the lens 4 by means of the control information from the control unit 18.

[0061] Thus, in particular a projection 16 of the screen 8 in front of the camera, that is to say lying in the recording direction 6, is changed depending on status information of the camera, in particular in the form of zoom information, in particular in real time, which is exemplified by the enlarged projection 16' in Fig. 4. The projection 16 of the screen 8 in front of the camera is preferably increased when the camera zoom is increased and reduced when the camera zoom is decreased. When the camera zoom is increased, a recording area of ​​20' (cf. Fig. 4) of the lens 4 is smaller than the one in Fig. 1 shows the recording area 20 of the lens 4 at a lower camera zoom. Thus, for more effective shielding of the lens 4, the screen 8 can be moved forward in the recording direction 6 without causing any impairment of the camera recording in the recording area 20 or 20', e.g., due to the screen 8 being visible in the image and / or video.

[0062] Fig. Figure 2 shows the glare protection device 2 with the holding device 10 viewed opposite to the recording direction 6. The holding device 10 extends circumferentially around the camera, in particular the lens 4, in this direction. The connection between the screen 8 and the lens 4 is thus particularly secure.

[0063] In addition, the holding device 10 has at least one attachment 22, via which the holding device 10 is clamped to the camera, in particular the lens 4.

[0064] In order to adapt to different camera widths 24, the attachment 22 has at least one base 26 which is to be arranged fixedly to the camera and at least two legs 28 which are movably, in particular displaceably, connected to the base 26. The camera width, viewed in plan view, means an extension of the camera perpendicular to the recording direction 6. The legs 28 are connected to the base 26 for clamping the camera between the legs, in particular so as to be movable towards one another. For this purpose, the base 26 has in particular at least one guide element 30 which guides the legs 28 (cf. Fig. 8). The legs 28 are movable relative to the base 26 via suitable adjustment means 32, in this case, for example, adjustment wheels.

[0065] The anti-glare device 2 has, in particular, centering means for centering the screen 8 relative to the recording direction 6 of the lens 4. In the present embodiment, these centering means are formed by the legs 28 of the attachment 22. Thus, a central arrangement of the screen 8 relative to the recording direction 6, as viewed in plan view, as well as symmetrical shielding, is easily realized.

[0066] At their respective end 34 facing away from the base 26, the legs 28 are connected by a connecting element 36 which is particularly flexible in shape and particularly variable in length (cf. Fig. 3), which in this case is designed as a strap. Thus, the holding device 10 can be easily adapted to different camera shapes and sizes and securely connected to the camera.

[0067] In particular, how Fig. 3 shows, for a secure attachment of the screen 8 to the camera 3 or the lens 4 and an improved force distribution, at least two attachments 22 of the holding device 10 are arranged on the lens 4, one behind the other and spaced from one another in the recording direction 6.

[0068] Fig. 5 and Fig. 7 show in conjunction an adapter element connecting the screen 8 with the guide device 14 and the drive 12, wherein the adapter element in the present case comprises a first adapter part 38 and a second adapter part 40. On the corresponding multi-part adapter element, the screen 8 (in Fig. 7 not shown) and the guide device 14 and the drive 12 are attached at the bottom.

[0069] To improve safety against operator intervention in moving parts, the guide device 14 and / or the drive 12 has a protective cover 42.

[0070] In Fig. 5 also shows that, viewed from above, the screen 8 has an increasing width in a direction away from the camera, in particular the recording direction 6. Thus, the shape of the screen 8 is advantageously adapted to the size of the recording area 20, 20', which also increases in the recording direction 6 (cf. Fig. 1, Fig. 4). This allows for shielding adapted to the shape of the receiving area 20, 20'.

[0071] Fig. 6 shows the screen 8 with a central section 44 which extends in particular in a planar manner, as well as with a direction 46 transverse to the recording direction 6 (cf. Fig. 5) of the camera, in particular also extending flatly, which extend at an angle to the central section 44, in particular downwards, i.e. opposite to the height direction 9.

[0072] Fig. 7 shows a control unit 18 connected to the drive 12 (electronic connection means not shown), by means of which the drive 12 is used to move the screen 8 (cf. Fig. 1, Fig. 4). The control unit 18 comprises an interface for connection to the camera, for example a suitable electronic connection point or the like, which is designed to receive status information, in particular zoom information, from the camera.

[0073] In addition, the control unit 18 comprises a data memory with a control program configured to select control information for controlling the drive 12 depending on the status information, in particular in real time, and to control the drive 12 according to the control information, in particular in real time. This enables flexible shielding of the lens 4 depending on this status information.

[0074] For reading and / or setting at least one parameter of the control program, the control unit 18 has an operating unit 50 (cf. Fig. 9), which in this case is designed as a reading and input display.

[0075] The guide device 14, in particular also the drive 12, is preferably pivotally connected to the holding device 10. In the present case, hinges 52 are provided for this purpose. Thus, the guide device 14, in particular also the drive 12, are connected to the holding device 10 in an angularly adjustable manner about a pivot axis 53 extending horizontally and transversely to the recording direction 6 of the camera. Fig. 9 shows, the angle 54 between the guide device 14 and the holding device 10 can be changed, in particular, by the anti-glare device 2 comprising an adjusting device 56. The adjusting device 56 connects the guide device 14, in particular also the drive 12, to the holding device 10 in an angle-adjustable manner. For this purpose, the adjusting device 56 has, in the present case, for example, a height adjustment means 60, in this case a threaded rod, which can be moved via an actuating means 58, in this case a rotary knob, and with which a distance between the guide device 14 or drive 12 and the holding device 10, and thus also the angle 54, can be changed at least in some areas, in particular on the side of the holding device 10 facing away from the pivot axis 53. The shielding of the lens 4 can thus be flexibly adapted to lighting conditions and / or camera settings by changing the angle.

[0076] Fig. 10 and Fig. 11 shows the drive 12 and the guide device 14, which are each attached to the second adapter element 40 below the latter. In addition, a driver 62 of the control unit 18 for the drive 12 is also attached to the second adapter element 40.

[0077] The guide device 14 is preferably designed as a linear guide, in this case as a profiled rail guide. It comprises a guide carriage 64, to which the screen 8 (see Fig. 1) is attached via the second adapter element 40. List of reference numbers 2 anti-glare device 4 Lens 6 Shooting direction 7 Longitudinal center axis 8 umbrella 9 Altitude direction 10 Holding device 12 Drive 14 Guide device 16, 16' overhang 18 Control unit 20, 20' recording area 22 Essay 24 camera width 26 Base 28 legs 30 guide element 32 adjustment devices 34 Leg end 36 connecting element 38 First adapter part 40 second adapter part 42 Protective cover 44 Middle umbrella section 46 Transverse direction 48 Shield end section 50 control unit 52 Hinge 53 Swivel axis 54 angles 56 Adjustment device 58 Actuating devices 60 height adjustment devices 62 drivers 64 guide carriages

Claims

[1] Anti-glare device (2) for a camera, in particular designed as a studio camera, which has a lens (4), in particular a box lens, wherein the anti-glare device (2) comprises a screen (8) to be arranged next to, in particular above, the lens (4) when viewed in the recording direction (6) of the camera to be used in operation, for shielding the lens (4) against backlight and a holding device (10) by means of which the screen (8) can be connected to the camera, characterized by that the anti-glare device (2) has a drive (12) designed in particular as a linear drive, via which the screen (8) guided by means of a guide device (14) can be displaced relative to the holding device (10), preferably in the receiving direction (6). [2] Anti-glare device (2) according to claim 1, characterized bythat the screen (8) has a projection (16, 16') directed in the receiving direction (6) relative to the holding device (10), in particular wherein the projection (16, 16') can be changed by moving the screen (8) via the drive (12). [3] Anti-glare device (2) according to one of the preceding claims, characterized by a control unit (18) connected to the drive (12), by means of which the drive (12) can be controlled to move the screen (8). [4] Anti-glare device (2) according to claim 3, characterized by that the control unit (18) has an interface for connection to the camera, which interface is designed to receive status information, in particular zoom information, of the camera. [5] Anti-glare device (2) according to claim 4, characterized bythat the control unit (18) comprises a data memory with a control program which is designed to select control information for controlling the drive as a function of the status information, in particular in real time, and to control the drive in accordance with the control information, in particular in real time. [6] Anti-glare device (2) according to claim 5, characterized by that the control unit (18) has an operating unit (50) for reading and / or setting at least one parameter of the control program. [7] Anti-glare device (2) according to one of the preceding claims, characterized by that the guide device (14) is designed as a linear guide, in particular as a profile rail guide. [8] Anti-glare device (2) according to claim 7, characterized by that the guide device (14) comprises a guide carriage (64) to which the screen (8) is fastened. [9] Anti-glare device (2) according to one of the preceding claims, characterized by at least one adapter element connecting the screen (8) to the guide device (14) and to the drive (12). [10] Anti-glare device (2) according to one of the preceding claims, characterized by that the guide device (14), in particular also the drive (12), is pivotally connected to the holding device (10). [11] Anti-glare device (2) according to one of the preceding claims, characterized by an adjusting device (56) connecting the guide device (14), in particular also the drive (12), to the holding device (10) in an angularly adjustable manner. [12] Anti-glare device (2) according to claim 11, characterized bythat the guide device (14), in particular also the drive (12), is connected to the holding device (10) in an angularly adjustable manner about an axis (53) running horizontally and transversely to the recording direction (6) of the camera relative to the holding device (10). [13] Anti-glare device (2) according to one of the preceding claims, characterized by that the holding device (10) extends circumferentially around the camera, in particular around the lens (4), when viewed in the recording direction (6) of the camera. [14] Anti-glare device (2) according to one of the preceding claims, characterized by that the holding device (10) has at least one attachment (22) for clamping the holding device (10) to the camera, in particular the lens (4). [15] Anti-glare device (2) according to claim 14, characterized byin that the attachment (22) has at least one base (26) which is to be arranged fixedly to the camera in order to adapt to different camera widths (24), as well as at least two legs (28) which are movably, in particular displaceably, connected to the base (26) and which can be moved, in particular towards one another, in order to clamp the camera between them. [16] Anti-glare device (2) according to claim 15, characterized by that the legs (28) are connected at their respective ends (34) facing away from the base (26) by a connecting element (36) which is in particular flexible in shape and in particular variable in length, preferably a belt. [17] Anti-glare device (2) according to one of claims 14 to 16, characterized by that the holding device (10) comprises at least two attachments (22) spaced apart from one another in the recording direction (6) of the camera. [18] Anti-glare device (2) according to one of the preceding claims, characterized bythat the holding device (10) has centering means for centering the screen (8) relative to the recording direction (6) of the lens (4). [19] Anti-glare device (2) according to one of the preceding claims, characterized by that the screen (8) viewed in plan view has an increasing width in a direction away from the camera, in particular in the recording direction (6). [20] Anti-glare device (2) according to one of the preceding claims, characterized by that the screen (8) has a central section (44) which extends in particular in a planar manner, as well as end sections (48) which are located in the direction (46) transverse to the recording direction (6) of the camera and which in particular also extend in a planar manner and which are angled towards the central section (44), in particular downwards. [21] Camera, in particular studio camera, with a lens (4) preferably designed as a box lens, characterized byan anti-glare device (2) according to one of claims 1 to 20. [22] Method for shielding a lens (4) of a camera, in particular a studio camera, preferably designed as a box lens, against backlight by means of an anti-glare device (2), preferably designed according to one of claims 1 to 20, comprising a screen (8) connected to the camera by means of a holding device (10), characterized by that the screen (8) guided by means of a guide device (14) is displaced relative to the holding device (10) via a drive (12) of the anti-glare device (2), which is designed in particular as a linear drive. [23] Method according to claim 22, characterized by , that - the camera provides status information, in particular zoom information, to the camera, - the status information is transmitted to a control unit (18), in particular a control unit (18) of the anti-glare device (2), - control information is selected by a control program of the control unit (18) depending on the status information and - the drive (12) for moving the screen (8) shielding the lens (4) is controlled by means of the control information from the control unit (18). [24] Method according to claim 22 or 23, characterized by that a projection (16, 16') of the screen (8) in front of the camera is changed as a function of status information of the camera and / or the anti-glare device (2), in particular in real time, which is in the form of zoom information. [25] Method according to one of claims 22 to 24, characterized by that a projection (16, 16') of the screen (8) in front of the camera is increased when a camera zoom is increased and reduced when a camera zoom is decreased.

Images