Active camera lens system filter

Abstract

An electronic camera filter including an electronic display configured for use with a camera system to provide different levels of filtering of an image transmitted to the camera as a neutral density filter. The electronic display is programmable so that it can be calibrated to provide different desired filter levels associated with different settings of camera lens aperture, focus, zoom, or photometer measurements. The electronic display may be calibrated manually or by calibration information stored or otherwise downloaded into the electronic display memory. The ability to program and calibrate a filter level setting enables an electronic display to operate in synchronization with a calibrated camera lens aperture, focus, zoom, or photometer to provide desired combined or collaborative optical characteristics. The electronic display may be controlled by the same controller for controlling the camera lens aperture, focus, and / or zoom to provide synchronized operation.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application is based upon and claims the benefit of U.S. patent application No. 17 / 537456, filed on November 29, 2021, which is a continuation-in-part of U.S. patent application No. 17 / 534318, filed on November 23, 2021, which is a continuation-in-part of U.S. patent application No. 16 / 381,433, filed on April 11, 2019 (now U.S. Patent No. 11,184,510), which claims the benefit of U.S. Provisional Application No. 62 / 657574, filed on April 13, 2018, which patent applications are incorporated herein by reference in their entirety. Background Art

[0003] The optical filters of a camera are used to reduce the amount of light entering the camera or to produce other optical effects (e.g., changing the color of an image). These filters need to be manually interchanged to change the optical effect produced by the filter. In movie production, the filters cannot be manually interchanged during filming. In addition, the time and effort spent on replacing filters between shots will increase the cost of movie production. For example, if the camera is located in a high crane, the crane needs to be lowered to manually replace the filter.

[0004] Additionally, in filmmaking, it may be expected that the level or amount of filtering used for a particular shot will change depending on the particular settings of the camera or lens, which settings may include, but are not limited to, the setting of the camera lens aperture or iris, the setting of the camera lens zoom portion, the setting of the camera lens focus portion, and / or the lighting surrounding the camera or the subject being filmed. Therefore, changes in these settings often result in the user changing the filter to account for the changes in these settings.

[0005] Therefore, there is a need for a more efficient way to change the optical filtering of a camera without manually replacing the filter. Additionally, there is a need for a more efficient way to change the optical filtering level of a camera without manually replacing the filter, thereby being able to change the optical filtering based on changes made to one or more camera system or camera lens settings during use. Summary of the invention

[0006] The present disclosure satisfies the above needs by providing an electronic display that is configured to match, pair, or calibrate with a camera system or camera lens or a camera auxiliary object such as a light meter (e.g., when used as a neutral density filter) to provide calibrated filter levels when changes are made to the camera system, lens system, or camera auxiliary object, thereby providing synchronized operation between the electronic display and the camera system, lens system, or auxiliary object.

[0007] In one example, an electronic display as disclosed herein is configured to be attached to a camera lens system and is configured to filter an image transmitted to the camera. In one example, the filter is attached to the object side of the camera lens system. In one example, the filter is inserted between the camera and the camera lens system, or can be inserted between different elements of the camera lens system, or can be inserted within the camera. In one example, the filter can be connected to the camera system between the camera lens and the image receiver of the camera system. In one example, the electronic display includes a filter level setting that is calibrated with at least one of an aperture T-stop setting of the camera lens, a focus setting of the camera lens, a zoom setting of the camera lens, and a light exposure measurement value of a light meter through user programming, etc. In one example, the electronic display includes a controller configured to electrically control the filtering of the electronic display. The electronic display also includes a receiving device for receiving a control signal for controlling the controller. In one example, the receiving device includes a wireless signal receiver. In one example, the receiving device includes a serial input port for receiving a control signal through a cable connected thereto.

[0008] In one example, the electronic display is configured to operate in synchronization with the operation of at least one of a camera lens aperture, a camera lens focus section, a camera lens zoom section, and a light meter to change the filter setting to a calibrated setting based on at least one of a different aperture T-stop setting, a different focus setting, a different zoom setting, and a different exposure measurement value according to the respective calibrated filter setting. Configured in this manner, once the electronic display filter levels are calibrated to the different camera lens element or object settings, the electronic display and the camera lens element or object can operate in synchronization with the electronic display providing the calibrated filter levels that match the different camera lens element or object settings.

[0009] In one example, the electronic display includes a liquid crystal for filtering an image. In such an example, the electronic display is a neutral density filter, and the calibrated filter settings are different neutral density levels. In one example, the electronic display includes one or more organic light emitting diodes for filtering an image. In one example, the electronic display includes a housing coupled thereto, and a controller and a receiving device are positioned within the housing. In one example, the housing includes at least a portion of a frame for the electronic display. In one example, the electronic display is configured to be removably coupled to a hood to be coupled to a camera lens. Alternatively, the electronic display may include a housing configured to enable coupling or assembly between different camera lens elements or portions, between a camera lens and a camera, for example, behind a lens, or inside / inside a camera.

[0010] In one example, the electronic display filter setting is calibrated with the camera lens aperture T-stop setting, and the electronic display operates synchronously with the camera lens aperture. In one example, the electronic display filter setting is calibrated with the camera lens focus section setting, and the electronic display operates synchronously with the camera lens focus section. In one example, the electronic display filter setting is calibrated with the camera lens zoom section setting, and the electronic display operates synchronously with the camera lens zoom section. In one example, the electronic display filter setting is calibrated with the camera lens aperture setting, the electronic display operates synchronously with the camera lens aperture, and the camera lens aperture operates synchronously with the camera lens focus section. In one example, the electronic display can be calibrated with any one of the aperture, focus, and zoom, and operate synchronously with the aperture, focus, and zoom section calibrated therewith, while one or more of the other apertures, focus, and zooms that the electronic display is not calibrated with can operate synchronously with the calibrated lens element. In one example, the electronic display filter setting is calibrated with the exposure measurement value of the light meter, and the electronic display operates synchronously with the light meter.

[0011] In one example, the electronic display includes a first portion and a second portion, each of the first portion and the second portion is configured to allow light to pass therethrough, and the controller is configured to electrically control filtering of the electronic display such that the first portion filters an image while the second portion does not filter the image. In one example, the controller is configured to electrically control filtering of the electronic display such that the first portion does not filter the image while the second portion filters the image.

[0012] In one example, the electronic display calibrates light filtering of an image of a camera system by calibrating at least one of an aperture T-stop setting of a camera lens, a focus setting of a camera lens, a zoom setting of a camera lens, and an exposure measurement of a light meter with a filter setting of the electronic display. In one example, the electronic display includes a liquid crystal that is electronically controlled to filter light, enabling the electronic display to function as a variable neutral density filter. In one example, the calibration step may be performed using user input on the electronic display or by pre-programmed calibration settings that are stored in or downloaded to a memory of the electronic display. In one example, the electronic display device may include a preset filter level to which it is calibrated, or may include a range of unset filter levels to which it is calibrated. In one example, the electronic display includes a current filter level that may be fine-tuned or changed as needed to accommodate a particular filter level desired during calibration. Once the calibration steps have been performed, the electronic display can be controlled to operate in synchronization with the aperture, focus, zoom, or photometer to provide changes in the aperture, focus, zoom, or photometer to calibrated filter levels to provide the desired filter level for delivering an image to the camera. In one example, the user control facilitates synchronized operation of the electronic display with at least one of a camera lens aperture, a camera lens focus, a camera lens zoom, and a photometer.

[0013] Configured in this manner, the electronic display provides desired performance levels (e.g., optical filtering) that are calibrated and can be fine-tuned to specific changes in camera lens element settings or auxiliary camera system objects to facilitate synchronized operation of the electronic display with the calibrated camera lens elements or auxiliary objects, thereby avoiding the need to replace filters during changes in camera lens settings or manually change settings of filters during changes in camera lens settings, which increases operational flexibility and camera operating efficiency. In addition, the ability to provide desired calibrated levels of optical filtering associated with changing camera lens settings provides desired combined or synergistic optical properties that are not possible or easily obtained in operation, thereby greatly expanding the usability and obtainable range of optical properties of user camera systems that include such features. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The features and advantages of the systems, devices, and methods disclosed herein will become apparent as a better understanding becomes apparent with reference to the specification, claims, and drawings, in which:

[0015] Figure 1 A front view of an optical filter according to an embodiment of the present disclosure is shown.

[0016] Figure 2 Shows Figure 1 A front view of the filter shown, which has Figure 1The filters shown filter light differently.

[0017] Figure 3 Shows Figure 1 A front view of the filter shown, which has Figure 1 The filters shown filter light differently.

[0018] Figure 4 A front view of a control interface of a control terminal according to an embodiment of the present disclosure is shown.

[0019] Figure 5A , Figure 5B and Figure 5C Each shows a close-up view of an input according to an embodiment of the disclosure.

[0020] Fig. 6A A front perspective partial view of a portion of an electronic display using liquid crystals according to an embodiment of the present disclosure is shown.

[0021] Figure 6B A front perspective exploded view of a portion of an electronic display using organic light emitting diodes according to an embodiment of the present disclosure is shown.

[0022] Figure 6C A front view of an electronic display using a liquid crystal according to an embodiment of the present disclosure is shown, wherein the liquid crystal is in an operating state;

[0023] Fig.6D The invention shows the use of liquid crystal according to an embodiment of the present disclosure. Figure 6C An electronic display, wherein the liquid crystal is in a second operating state;

[0024] Fig. 7A A front perspective view of an electronic display performing optical filtering according to an embodiment of the present disclosure is shown.

[0025] Figure 7B A front perspective view of an electronic display performing optical filtering according to an embodiment of the present disclosure is shown.

[0026] Figure 7C A front perspective view of a liquid crystal panel used in combination with a panel of one or more organic light emitting diodes according to an embodiment of the present disclosure is shown.

[0027] Figure 8 A side view representation of a camera system is shown in accordance with an embodiment of the disclosure.

[0028] Fig. 9 A front perspective view of a camera system is shown in accordance with an embodiment of the present disclosure.

[0029] Fig.10 A side view representation of a camera system is shown in accordance with an embodiment of the disclosure.

[0030] Fig.11 A close-up view of an electronic display for use in combination with a camera of a mobile device is shown in accordance with an embodiment of the present disclosure.

[0031] Fig.12 A partial perspective view of an exemplary electronic display disclosed herein is shown.

[0032] Fig.13 A schematic diagram of an example camera system including an example electronic display operated by an example user controller as disclosed herein is shown.

[0033] Fig.14 A schematic diagram of an exemplary camera system including an exemplary electronic display as disclosed herein for use with an exemplary photometer is shown. DETAILED DESCRIPTION

[0034] Figure 1 An optical filter 10 is shown according to an embodiment of the present disclosure. The optical filter 10 is preferably used with a camera lens as part of a camera system. The optical filter 10 may include an electronic display 12 and may include a housing 14. The optical filter 10 may include a controller 16, a power supply 18, and an input 20.

[0035] The electronic display 12 may be transparent (light-transmissive) and may allow visible light to pass therethrough. The electronic display 12 may be configured such that filtering of the electronic display 12 is electronically controlled. The electronic display 12 may be configured to filter an image on the object side of the electronic display 12 for a camera lens. Filtering may occur by various methods and may include reducing the amount of light transmitted through the electronic display 12, or changing the color of the light that passes through the electronic display 12, or otherwise changing the characteristics of the light that passes therethrough. For example, filtering may occur by filtering the image on the object side of the electronic display 12 by diffusing the light that is transmitted through the electronic display 12, or by causing the light that is transmitted through the electronic display 12 to shimmer in various directions or other effects. Filtering may occur by emitting light from the electronic display 12 overlaid on the image on the object side of the electronic display 12. The emitted light may change the color or amount (intensity) of light received by the camera lens.

[0036] Electronic display 12 may include one or more pixels ( Fig. 6A 22 and Figure 6B24 in the figure). If multiple pixels are used, a pixel array can be provided. In other embodiments, a single pixel (or a 1×1 pixel arrangement) can be used. The electronic display 12 can utilize liquid crystals contained in the electronic display 12 to perform image filtering. The electronic display 12 can also utilize organic light emitting diodes contained in the electronic display 12 to filter images. In other embodiments, other forms of electronic displays can also be used. For example, the electronic display disclosed herein can utilize quantum dots, etc. It should be understood that all forms of electronic technology that can be adjusted to filter images for use with a camera are within the scope of the electronic display disclosed herein.

[0037] Electronic display 12 may have a front surface 26, a rear surface (opposite the front surface), and may include one or more side surfaces 28. Figure 1 , four side surfaces are shown. Housing 14 can be positioned at the side surfaces of electronic display 12 and can form a boundary of filter 10. In one embodiment, the boundary can extend around the entirety of electronic display 12 and can form a frame for electronic display 12. Housing 14 can include a portion of the frame, and the frame can extend around all or a portion of electronic display 12.

[0038] The size of the filter 10 can be designed so that the filter can fit in a standard filter slot of a lens hood. The size of the filter 10 can be designed for use with a camera or a movie camera. The filter 10 can have a rectangular shape. In one embodiment, the size of the filter 10 can be designed to be about 4 inches in the vertical dimension and about 5.65 inches in the horizontal dimension. In one embodiment, the size of the filter 10 can be designed to be about 6 inches in the vertical dimension and about 6 inches in the horizontal dimension. The size of the filter 10 can be designed to be about 4 millimeters thick. In other embodiments, the size of the filter 10 can be varied. In one embodiment, the size of the filter 10 can be configured to be no greater than 7 inches in the horizontal or vertical dimension. In one embodiment, the filter 10 can be configured to be no greater than 6.5 inches in the horizontal or vertical dimension. In one embodiment, the thickness of the filter 10 can be designed to be no greater than 10 millimeters thick. In one embodiment, the electronic display 12 can have a size no greater than 7 inches in the horizontal or vertical dimension, and can have a size no greater than 6.5 inches in the horizontal or vertical dimension. In one embodiment, electronic display 12 may have a size no greater than 140 millimeters in either the horizontal or vertical dimension. Filter 10 and electronic display 12 are preferably sized to take into account camera lens size, as filter 10 is preferably used with camera lenses, it being understood that these dimensions vary depending on the particular type of camera and the application in which the camera is used.

[0039] In one embodiment, the shape of the filter 10 and the electronic display 12 can be similar to Figure 1 The shapes shown are different. For example, an arc or circle, a square or other shape may be used. For example, the filter 10 and the electronic display 12 may be configured for assembly between camera lens elements, between a camera lens and a camera, or inside a camera.

[0040] The electronic display 12 includes a portion of the filter 10 for light to pass through. The housing 14 and other electrical components of the filter 10 are preferably positioned outside the viewing aperture of the filter 10 so that the housing 14 and other electrical components do not obstruct the view of the image imaged by the camera lens. However, in other embodiments, the housing 14 and the electrical components may be within the viewing aperture. For example, the housing 14 and / or the electrical components may be transparent so that the view of the image is not obstructed by their presence.

[0041] Controller 16 may be used to electrically control the filtering of electronic display 12. Controller 16 may be electrically coupled to electronic display 12. Controller 16 may include a microprocessor or the like for controlling the filtering of electronic display 12. Controller 16 may electrically control the filtering by changing a characteristic of electronic display 12. For example, controller 16 may cause the amount of light transmitted through electronic display 12 to change, or may cause the color of the light to change, or may cause light to be emitted from electronic display 12 that changes an image. It should be understood that the controller will be configured differently to be useful for the purpose of changing one or more properties of the electronic display depending on the particular type of electronic technology used. Figure 1 In the illustrated embodiment, the controller 16 can be positioned within the housing 14. However, in other embodiments, the controller 16 can be disposed separately from the electronic display 12. For example, the controller can be part of the lens system, and when the electronic display 12 is coupled to the lens system, the controller can be inserted into the electronic display 12. The controller 16 can also be positioned away from the lens system, and can communicate with and control the electronic display 12 in other ways. The controller 16 can be electrically connected to the electronic display 12 via a cable (not shown). The cable can be transparent to avoid obstructing the image by the electronic display 12.

[0042] A power source 18 may be used to power the electrical components of the filter 10. The power source may be located within the housing 14, such as Figure 1As shown, or in other embodiments, it can be located away from the filter 10. For example, the power supply 18 can be part of the lens system and can be inserted into the filter 10 when the filter 10 is coupled to the lens system. In other embodiments, the power supply 18 can be located away from the lens system. The power supply 18 can include a battery, a capacitor, a solar cell, an AC or DC power supply, a plug for receiving external energy, and other forms of power. In one embodiment, the power supply 18 can include an inductive receiver (such as an inductive coil or other form of receiver) for receiving inductive energy from an inductive transmitter (such as an inductive coil or other form of transmitter). The inductive receiver can be located near the inductive transmitter and can wirelessly receive energy to power the filter 10 or charge the battery or other storage device of the filter 10. In one embodiment, the power supply 18 can be located in the viewing hole of the electronic display 12 (for example, in an embodiment where the power supply 18 is transparent).

[0043] Input 20 may be used to receive controls for controlling controller 16. Input 20 may be used as Figure 1 The input 20 may be positioned within the housing 14 as shown, or may be remote from the housing 14 in a manner similar to the controller 16 or power supply 18. For example, the input 20 may be part of the lens system and may be inserted into the filter 10 when the filter 10 is coupled to the lens system. In other embodiments, the input 20 may be located remote from the lens system. The input 20 may include a wireless signal receiver. The input 20 may be operable to receive wireless signals via Wi-Fi, Bluetooth, peer-to-peer connection, cellular connection, radio connection, or other forms of wireless signal communication. In one embodiment, the input 20 may include a wired connection that is physically connected to receive control. For example, the wired connection may allow an operator of the camera system to control the electronic display 12. The wired connection may include a plug or other wired connection that receives control. In one embodiment, the input 20 may include a manual input (such as a knob, button, slider, or other form of input) that allows a user to provide control. Other forms of input 20 may also be utilized. The control received by the input 20 may have a variety of forms and may include control signals, manual input, or other forms of control. The control may be provided wirelessly (or with a wired connection). The control may include commands for controlling the controller 16.

[0044] The input 20 may be connected to a control terminal 30. The control terminal 30 may include a remote terminal that may wirelessly communicate with the input 20. The control terminal 30 may be configured to send control to the input 20, and may also receive information about the state of the filter 10 from the input 20. In this manner, the input 20 may include a transmitter and a receiver. In one embodiment, the control terminal 30 may communicate with the input 20 via a wired connection. The control terminal 30 may include a computer, a tablet computer, a smart phone, or may include another form of terminal device. The control terminal 30 may include a dedicated controller for the filter 10. For example, the control terminal 30 may be part of a lens system or a camera system used with the filter 10.

[0045] The control terminal 30 may be used to set or control the light filtering of the electronic display 12. The control terminal 30 may have a control interface that a user may utilize to set or control the light filtering of the electronic display 12. For example, the control interface may be part of a software application (or "app") for setting or controlling the light filtering of the electronic display 12. The control interface may also display received information about the status of the filter 10. For example, Figure 4 A control terminal 30 in the form of a tablet is shown. A display 31 can display the image received by the camera. The control terminal 30 can utilize a control interface in the form of a touch screen. The control interface can include interface controls 33, such as touch sliders that can change the color, brightness, or other forms of filtering of the filter 10. In one embodiment, the user can touch certain parts of the control interface to indicate the location of the image where filtering should occur. For example, the user can touch around or otherwise touch the cloud 34 to select that filtering should be changed only for the cloud. The user can select the entire image or a portion of the image to be filtered, or different types of filtering. Other forms of control interfaces and interface controllers 33 can be used.

[0046] In one example, the electronic display is a reprogrammable electronic display configured for use with a camera system, camera lens, or camera lens system. Although the electronic display is configured for use and placement in front of a camera lens (i.e., in front of a lens configuration), as described below, the electronic display disclosed herein may be configured with an intermediate image of a relay system or any non-sequential optical system in which the ray path is diverted from a sequential cycle. Therefore, it should be understood that the electronic display as disclosed herein may alternatively be used behind a camera lens, for example, inserted in a camera lens system or inserted between a camera lens system and a camera.

[0047] In other embodiments, other forms of software may be used to set or control the filtering of the electronic display 12. Other control interfaces may be utilized. For example, a standard keyboard or a series of buttons or knobs may be used as a control interface. The user may set the desired properties of the filtering of the electronic display, or may select a sequence of changing filters for the electronic display 12 to follow, as well as other forms of control.

[0048] FIG. 5A to FIG. 5C Other forms of input that can be used with the filters disclosed herein are shown. Figure 5A In the embodiment of the invention, an input 35 in the form of one or more buttons may be provided on the body of the filter. The user may press the button to allow the input 35 to receive a control input for controlling the controller or for programming the filter. Figure 5B In one example, an input 37 in the form of a slider may be provided on the body of the filter. In one example, the filter may include a single button, a series of buttons, and / or a slider or scroll wheel that enables a user to adjust or tune the filter level, for example when configured to function as a neutral density filter. In one example, the electronic display may be programmed with preset filter levels. In one example, the electronic display may have six current filter levels accessible by such user input. In one example, the levels may be ND 0.3, ND 0.6, ND 0.9, ND 1.2, ND 1.5, and ND 1.8. Although specific preset filter levels have been provided as neutral density filters, it should be understood that an electronic display as disclosed herein may be configured to provide a number other than six preset filter levels, and the filter level associated with each preset may be different from the example provided. Additionally, it should be understood that while preset filter levels have been disclosed, the electronic display may also be programmed or configured to provide zoomed, gradient, or graduated filter levels, rather than step changes between preset or fixed filter levels, thereby providing the user with a completely customized level of fine-tuned filtering for each specific camera use or capture. Fig.12 In one example, the electronic display 100 may include buttons 102 and 104 and a scroll wheel 106 as a user interface to enable step or gradient fine-tuning adjustments to the degree of desired filtering level (as described above) to provide step or gradient level filtering, thereby enabling a greater degree of control over providing customized filtering levels and / or fine-tuning of filtering levels. The user may slide the slider to allow input 37 to receive controls for controlling the controller. In FIG. 5C , an input in the form of a cable 39 coupled to a control terminal 41 may be coupled to the filter. The cable 39 may be removably plugged into an input (such as a serial input or the like) in the electronic display. The user may input controls for controlling the operation of the controller and the filter via the control terminal 41.

[0049] In one example, the electronic display is configured to include an onboard processor and memory (not shown) that can be reprogrammed to adjust the electronic display to enable use with different types of lenses and / or cameras, and / or to enable the electronic display to work differently with the same camera and / or lens as required by a particular shoot or filming environment. In one example, the electronic display can be configured to be reprogrammed via user input to the electronic display itself, or can be performed wirelessly, or reprogrammed via a wired electronic connection via a connection port (e.g., a serial port, etc.) on the electronic display. Reference Fig.12 , the exemplary electronic display 100 includes an entry port 108, such as a serial entry port, which is configured to accommodate a connection with a cable or the like for programming the electronic display, for operating the electronic display (e.g., changing the filter level produced by the electronic display), and / or for providing power to the electronic display from a suitable power source. In one example, it is desirable for the electronic display to have a serial port connection 108 that is configured to enable the electronic display to be remotely controlled and / or reprogrammed and / or powered. In one example, the electronic display is configured to be reprogrammable as described above, and is configured to facilitate use with any suitable system that generates a serial output for controlling the electronic display, including but not limited to wirelessly injecting commands / transmissions into the electronic display using an external dongle connected to the serial port, etc.

[0050] In one example, the electronic display processor and memory may include a boot loader or the like configured to allow the electronic display to be reprogrammed in the field to program custom software to adapt the electronic display for use with a particular lens. In such an example, the electronic display may then be reprogrammed in the field with default software. Configured in this manner, the ability to be reprogrammed with custom software in the field is provided, greatly expanding the adaptability and flexibility of the electronic display to accommodate a variety of camera use applications (again without having to switch or remove the electronic display from its connection to the camera).

[0051] In one embodiment, the electronic display may be operated by a lens controller coupled to the camera system. For example, the input may be configured such that the light filtering of the electronic display changes based on changes in aperture, or focus, or zoom, or other optical characteristics of the camera lens, or lighting conditions near the camera or lighting conditions of the subject being photographed, which may be useful or desirable. This may occur via a wired connection or other form of connection (e.g., wireless communication, etc.) to a lens controller, etc., of the camera system.

[0052] An electronic display synchronized with the camera lens aperture -In one embodiment, the electronic display can be configured to change the filter as the camera lens aperture changes. In such an embodiment, the electronic display is synchronized with the aperture so that movement of the aperture causes the desired change in the filter provided by the electronic display. In one example, the filter can be controlled by a handheld control device or controller (such as the Preston MDR-3 focus / aperture controller) such as the Preston MDR-3 focus / aperture controller. Fig.13 ) to wirelessly control the movement of an aperture and an associated electronic display. Although a particular type of camera lens control device has been disclosed, it should be understood that other types of control devices may also be used. In one example, the controller may be configured to operate the electronic display separately from the aperture, and to control the electronic display synchronized with the aperture via control commands sent to the aperture and the electronic display, for example, where the aperture and the electronic display operate on the same control channel of the controller.

[0053] In one example, the electronic filter is used as a neutral density filter, where the neutral density filter is synchronized to change with changes in aperture, and the desired electronic display is specifically programmed to match the desired ND level with different T-stop settings of the aperture, thereby providing a depth of field (DF) ramp mode setting that matches the different aperture settings. In one example, the default programmable electronic display setting for calibration using the aperture T-stop settings is five consecutive neutral density settings. In this example, the neutral density settings start with ND 0.6. The values ​​are ND 0.6 (2 stops), ND 0.9 (3 stops), ND1.2 (4 stops), ND 1.5 (5 stops), and ND 1.8 (6 stops). In one example, the user matches these neutral density values ​​to the desired T-stop settings of the aperture. The user matches these to maintain a constant exposure level throughout the aperture T-stop setting range. This allows the depth of field to be varied from shallow (fewer T-stops of the aperture) to large (more T-stops) by varying the aperture opening while maintaining (through synchronized action of the electronic display) a constant exposure level.

[0054] To calibrate the camera lens aperture to the electronic display, the existing electronic display neutral density setting is modified by erasing the default or previously stored setting, which may be accomplished by user input to the electronic display such as by pressing a button. Fig.12In one example, the default electronic display settings are erased by a user pressing and holding the inner arrow button 102 for a certain amount of time (e.g., about three seconds) when the electronic display 100 is in normal mode. In one example, the electronic display has a visual indicator, such as in the form of one or more lights 110. When the default electronic displacement settings have been erased, for example, after three seconds, the one or more lights 110 will dim to indicate that the erasure is complete. In one example, the visual indicator is in the form of one or more LEDs on the electronic display.

[0055] Once the default electronic display settings or DF ramp mode are erased, the electronic display is ready for the user to enter its settings so that the DF ramp mode can be subsequently programmed to the aperture (during a calibration, pairing, or matching process). In one example, the electronic display is placed in a settings programming mode, i.e., DF ramp mode, by the user pressing and holding the outer arrow button 104 on the electronic display for a certain time. In one example, the outer arrow button is pressed and held until the electronic display provides a visual indication that the DF ramp mode has been entered. In one example, the time period is approximately 3 seconds, and the visual indication is the lighting of one or more lights 110 on the electronic display. In one example, the one or more lights are LED indicators that provide a cyan light color indicating that the DF ramp mode has been entered. Once the electronic display programming mode is entered, the electronic display can be programmed to calibrate, match, or pair the neutral density levels of the lens aperture with different states (i.e., T-stop settings).

[0056] In one example, the electronic display neutral density setting is calibrated, matched, or paired with the camera / camera lens aperture according to the following method. With the electronic display in normal mode, e.g., with the default neutral density setting erased and the electronic display not in an entry state, the camera lens aperture is set to the darkest desired T-stop setting for the electronic display neutral density setting or DF pull. In one example, the aperture setting is calibrated, matched, or paired with one or more desired neutral density values ​​or levels of the electronic display. In an example where the electronic display is configured to provide a specific fixed-stop aperture or neutral density setting (e.g., 6 stops), the darkest desired aperture T-stop setting can be calibrated, matched, or paired with a neutral density of two stops (e.g., ND 0.6 each). The electronic display is then placed in programming, i.e., DF ramp mode, into a state as described above. In this state, the electronic display neutral density setting can be adjusted by user input (e.g., by using the scroll wheel 106) to adjust and fine-tune the calibration, matching, or pairing of the neutral density level with the specific aperture T-stop setting. In one example, the neutral density setting is accepted by the electronic display by the user pressing the inner arrow button 102, and acceptance is visually confirmed by flashing one or more lights 110 on the electronic display. The aperture is then set to the next desired T-stop setting, and the electronic display is adjusted as described above to provide another desired neutral density level. In examples where the electronic display is configured with preset neutral density settings, the user may momentarily press the outer arrow button 104 to move to the next neutral density setting. The nerve density value may be fine-tuned / adjusted to the aperture T-stop setting as described above by using the scroll wheel 106, and the desired value accepted as described above by pressing the inner arrow button 102 and obtaining a visual confirmation of acceptance. The process of adjusting the aperture to the next T-stop setting and calibrating, matching, or pairing the T-stop setting with the desired neutral density level of the electronic display is repeated until all desired aperture T-stops have been calibrated, matched, or paired to the neutral density level of the electronic display. This is an example method of calibrating the electronic display to the aperture to facilitate synchronized operation between the two.

[0057] In one example, where the electronic display is configured with six preset neutral density levels or values ​​(where in one example, each preset neutral density level has its own designated light 110), it is desirable that the final aperture T-stop setting is no more than 5 stops removed from the initial T-stop setting because the range of electronic display neutral density settings is limited to between ND0.6 and ND1.8 when the electronic display is placed in DF ramp mode. If the camera usage application or camera user requires less than five aperture T-stop settings, the electronic display neutral density level may be moved or skipped during the calibration process without moving to a new T-stop setting.

[0058] Once the electronic display has been calibrated, matched, or paired with the aperture, the aperture range can be adjusted as needed, if desired, for example, if the sun moves into or out of cloud cover. This can be accomplished by placing the electronic device into a programmed entry mode (e.g., DF ramp mode), as described above. To open the aperture range by 1 stop, for example, from a range of T11 to T2.8 to a range of T8 to T2, the user can press the outer arrow button 104 on the electronic display once. To close the aperture range by 1 stop, for example, from a range of T8 to T2 to a range of T11 to T2.8, the user can press the inner arrow button 102 on the electronic display once. To fine-tune the neutral density level to accommodate the adjusted aperture range, the electronic filter neutral density level can also be moved up and down by the user moving the scroll wheel 106 between the two arrow buttons.

[0059] Once the desired calibration of the electronic display and aperture is completed, the electronic filter programming mode (e.g., DF ramp mode) can be exited and the electronic display returned to normal operation by pressing and holding the outer arrow button 104 on the electronic display for a period of time (e.g., three seconds) until the LED light 110 is no longer illuminated. In one example, the electronic display is configured to store the neutral density settings (e.g., DF ramp mode settings) of the programmed aperture calibration in on-board memory. If the electronic display is power cycled, the settings will be read from the memory when the power is turned on. If the electronic display is to be used with a new lens, the calibration process will be repeated to synchronize the electronic display and aperture operation, in which case the user will erase the existing calibration settings associated with the removed lens (as described above) and reprogram and calibrate, match or pair the aperture T-stop settings of the new lens with the electronic display neutral density levels in the manner previously described. Configured in this manner, the electronic display can be programmed to be calibrated for synchronized aperture operation with a variety of different camera lenses.

[0060] While a particular method for calibrating, matching, or pairing an electronic display neutral density level with a camera lens aperture T-stop level has been described above, it should be understood that this is merely one method, and that other methods of pairing or matching neutral density levels with aperture T-stop levels in a similar manner are also within the scope of the electronic displays disclosed herein. For example, the electronic displays disclosed herein may have more or less than six preset neutral density settings, which may be different than those specifically described, and / or may have a continuous gradient of preset or other different possible neutral density levels, and for such embodiments, the process of calibrating, matching, or pairing aperture T-stop settings with such neutral density levels may involve the same general method as described, wherein the aperture T-stop settings are each calibrated with one or more desired electronic display neutral density levels. In one example, as the aperture moves from a closed position to a more open position, the paired neutral density level of the desired electronic display increases, thereby reducing the amount of light passing through the electronic display and to the camera lens.

[0061] As an alternative to the above-described methods for calibrating an aperture setting to an electronic display neutral density level or setting, the electronic displays disclosed herein may be configured to include a memory having stored therein calibrated aperture T-stop settings and associated neutral density levels for different types of lenses. For example, the electronic display may be configured such that such existing aperture calibration information may be loaded or downloaded into the memory of the electronic display through known techniques. It should be understood that all such alternative methods for calibrating an electronic display to an aperture are within the scope of the electronic displays disclosed herein.

[0062] In one example, the user controls may be configured as described above to control the electronic display and the aperture T-stop setting. Fig.13The camera system 200 shown includes a camera 202 connected to a camera lens aperture 204, a camera lens focus 206, a camera lens zoom 208, an electronic display 210, a light shield 212, a user controller 214, a receiver / transmitter or transceiver device 216, and cables 226, 228, and 230. In one example, the controller 214 can be configured to send control signals using one or more different channels. In examples where synchronized operation of the electronic display and the aperture is desired, the electronic display 210 and the aperture 204 are configured to receive signals on the same channel from the controller 214, thereby achieving synchronized operation of the electronic display and the aperture by the user manipulating a single control feature or element of the controller. In one example, the controller 214 can achieve synchronized operation of the electronic display and the aperture by moving an aperture control element on the controller, which can be in the form of a knob 218, a switch 220, a slider 222, etc. In one example, the controller 214 transmits the wireless aperture control signal 224 on a single channel that is received by the receiver / transmitter device 216. In one example, the receiver / transmitter device 216 is configured to convert the received wireless signal into an electronic signal and direct the electronic control signal via separate cables 228 and 230 to each of the operating mechanisms 232 that move the aperture 204 and to the serial input 234 of the electronic display 210 to change the neutral density level calibrated with the aperture 204.

[0063] Electronic display synchronized with the camera lens focusing unit - In one embodiment, the electronic display may be configured to change the filter as the focus of the camera lens changes. In such an embodiment, the electronic display operates in sync with the focus mechanism so that changes in focus cause desired / calibrated changes in the filter provided by the electronic display. In one example, the ability to synchronize the electronic display with the focusing action of the photographic objective operates to compensate for aperture losses associated with macro / microphotography. Traditionally, the illumination losses encountered in macro / microphotography are accommodated by manually adjusting the aperture during focus pulls or ramps. This traditional method is imprecise and produces additional variations in the observed depth of field and defocus characteristics. Therefore, it is desirable to synchronize the operation of the electronic display with the focus because when focusing with a macro conjugate, the operation of the electronic display serves to compensate for the aperture losses to a much higher resolution and maintain a constant depth of observation and constant defocus characteristics of the captured image.

[0064] In one example, the focus and electronic display movement can be controlled wirelessly, such as by a handheld controller or control system as described above. In one example, the controller can be used to control an electronic display synchronized with the focus portion, such as by control signals or commands sent to the focus mechanism, where the focus mechanism and the electronic display operate on the same control channel. Although the above-mentioned methods of controlling the operation of the electronic display and synchronized focus have been disclosed, it should be understood that there are also various different methods or approaches for achieving the same functionality, and all such other methods and approaches are intended to be within the scope of the present disclosure.

[0065] In one example, where the electronic display is used as a neutral density filter that changes in sync with the focus section, it is desirable that the electronic display be specifically programmed to modify a neutral value setting, such as a macro focus mode setting. To calibrate an electronic display having a camera lens focus section neutral density setting (e.g., a macro focus mode setting), the setting is modified by erasing a default or previously stored setting, which can be accomplished by a user input to the electronic display by pressing a button, etc. In one example, the electronic display neutral density setting is erased in the same manner as described above so that the electronic display 100 with an aperture is calibrated by the user pressing the inner arrow button 102 and holding it for a certain time (e.g., about three seconds) when the electronic display is in normal mode. In one example, the electronic display has a visual indicator, such as in the form of one or more lights 110. When the neutral density setting (e.g., macro focus mode setting) has been erased (e.g., after three seconds), the one or more lights will dim to indicate that the erasure is complete. In one example, the visual indicator is in the form of one or more LEDs on the electronic display.

[0066] Once the default or previous neutral density setting (e.g., macro focus mode setting) has been erased, the electronic display is input by the user for subsequently programming the neutral density setting (e.g., macro focus mode) to the focus (during a calibration, matching, or pairing process). In one example, the electronic display enters a programming mode (e.g., macro focus mode) by the user pressing and holding the outer arrow button 104 on the electronic display 100 for a certain period of time. In one example, the outer arrow button is pressed and held until the electronic display provides a visual indication that the programming mode (e.g., macro focus mode) has been entered. In one example, the time period is approximately 3 seconds, and the visual indication is that one or more lights 100 on the electronic display are illuminated. In one example, the one or more lights are LED indicators that provide a cyan light color indicating that the macro focus mode has been entered. Once the electronic display programming mode (e.g., macro focus mode) is entered, the electronic display can be programmed to calibrate, match, or pair different states or settings of the focus.

[0067] In one example, an electronic display is calibrated, matched, or paired with a camera lens focus unit according to the following method. With the electronic display in a normal mode, for example, with the default or previous neutral density setting erased and the electronic display not in an entry state, the camera lens focus unit is set to a desired initial focus value for programming with the electronic display. In one example, the focus value or setting is calibrated, matched, or paired with one or more desired neutral density values ​​or levels of the electronic display. In one example, the electronic display is configured to provide a certain fixed stop aperture or neutral density setting (e.g., 6 stops). In one example, the electronic display is configured to provide five neutral density settings calibrated with the camera lens focus unit. In such an example, the initial focus value can be calibrated, matched, or paired with 2 stops of neutral density, for example, each at ND 0.6. Then, the electronic display is placed in a programming mode, such as a macro focus mode, as described above. In this state, the electronic display neutral density setting can be adjusted by user input (e.g., by using wheel 106) to adjust and fine-tune the calibration, matching, or pairing of the neutral density level with a specific focus value or setting. In one example, the neutral density setting is accepted by the electronic display by the user pressing the inner arrow button 102, and acceptance is visually confirmed by the flashing of the light 110 on the electronic display. The camera lens focus is then moved to the next value or setting, and the electronic display is adjusted to provide another desired neutral density level. In an example where the electronic display is configured with a set neutral density setting, the user can momentarily press the outer arrow button 104 to move to the next neutral density setting. The neutral density value can be fine-tuned or adjusted to the focus value or setting as described above by using the scroll wheel 106, and the desired neutral density value can be accepted as described above by pressing the inner arrow button 102 and obtaining visual confirmation of acceptance. The process of adjusting the camera lens focus to the next value or setting and calibrating, matching or pairing the focus value or setting with the desired neutral density level of the electronic display is repeated until all desired focus levels have been calibrated, matched or paired to the neutral density level of the electronic display. This is an example method of calibrating the electronic display to focus to facilitate synchronized operation between the two.

[0068] In an example where the electronic display is configured to have six set neutral density levels or values, it is expected that the final focus value or setting is no more than five settings removed from the initial focus value or setting because the range of electronic display neutral density settings used for calibration is limited to five settings between ND 0.6 and ND 1.8 when the electronic display is placed in a programming mode (e.g., macro focus mode). If the camera use application or camera user calls for or expects fewer than five focus values ​​or settings, the neutral density level may be moved or skipped without moving to a new focus value or setting during the calibration process.

[0069] Once the electronic display has been calibrated, matched, or paired with the camera lens focus section, the exposure range can be adjusted as needed, if necessary, for example, if the sun enters or leaves cloud cover. This can be done by placing the electronic display in a programming mode (e.g., macro focus mode), as described above. To open the exposure range by a value or setting, the user can press the outer arrow button 104 on the electronic display once. To close the exposure range by a value or setting, the user can press the inner arrow button 102 on the electronic display once. For fine adjustments, the exposure range can also be moved up and down by the user moving the scroll wheel 106 between the two arrow buttons.

[0070] Once the desired calibration of the electronic display and focus is completed, the programmed neutral density setting can be exited by pressing the outer arrow button 104 on the electronic display and holding for a period of time (e.g., three seconds) until the LED light is no longer illuminated and the electronic display returns to normal operation. The electronic display is configured to store the programmed calibrated focus and neutral density settings in an on-board memory. If the electronic display power is cycled, the settings will be read from the memory when the power is turned on. If the electronic display is to be used with a new lens, the calibration process will be repeated to provide the desired synchronized operation of the electronic display and camera lens focus portions, in which case the user will erase the existing calibrated neutral density settings associated with the removed lens (as described above) and reprogram and calibrate, match or pair the focus value or setting of the new lens with the electronic display neutral density level in the manner previously described. Configured in this manner, the electronic display can be programmed to be calibrated for synchronized focus operation with a variety of different camera lenses.

[0071] While a particular method for calibrating, matching, or pairing an electronic display neutral density level with a camera lens focus value or setting has been described above, it should be understood that this is merely one method, and that other methods for calibrating, matching, or pairing neutral density levels with focus values ​​or settings in a similar manner are within the scope of the electronic displays disclosed herein. For example, an electronic display disclosed herein may have more or less than six neutral density settings, which may be different than those specifically described, and / or may have a continuous gradient of different possible neutral density levels, and for such embodiments, the process of calibrating, matching, or pairing focus values ​​or settings with such neutral density levels may involve the same general method as described, wherein the focus values ​​or settings are each calibrated with one or more electronic display neutral density levels. In one example, as the focus moves from an initial value to a final value, the paired neutral density level of the desired electronic display value increases, thereby reducing the amount of light that passes through the electronic display and reaches the camera lens.

[0072] As an alternative to the above-described methods for calibrating a focus value or setting to an electronic display neutral density level or setting, the electronic displays disclosed herein can be configured to include a memory having stored therein calibrated focus values ​​and associated neutral density levels for different types of lenses. For example, the electronic display can be configured such that such existing calibration information can be loaded or downloaded into the memory of the electronic display by known techniques. It should be understood that all such optional processes for calibrating an electronic display to focus are within the scope of the electronic displays disclosed herein.

[0073] In one example, the user controller 214 can be configured as described above to control the electronic display 210 and the focus value or setting. In one example, the controller can be configured to control the focus through a user input as described above, which can be the same or different from the input of the aperture. In one example, the focus is controlled by a user input different from the aperture. For synchronized operation of the electronic display and the focus, the controller 214 is configured to control the focus 206 using one channel. In one example, the controller 214 provides a wireless control signal 224 on one channel received by the receiver / transmitter device 216 disclosed above, which operates to convert the received control signal from the controller and provide the control signal to the operating mechanism 236 that moves the focus portion 206 via the wired cable 228 and the serial input 234 of the electronic display 210 via the wired cable 230, respectively. Configured in this manner, when the user operates the controller 214 to change the focus, the electronic display also changes to the calibrated neutral density value. Although the above-described methods of controlling the operation and synchronized focusing of an electronic display have been disclosed, it should be understood that there may be other methods or approaches for achieving the same functions, and all such other methods and approaches are within the scope of the present disclosure.

[0074] An electronic display that is synchronized with the camera lens aperture and the camera lens focus unit -As described above, the electronic display can be calibrated to provide synchronized operation with the camera lens aperture or the camera lens focus unit. In another example, the electronic display can be configured to synchronize operation of one of each aperture or focus unit as described above, while the aperture and focus unit are configured to provide synchronized operation with each other. In one example, the electronic display can be calibrated with the aperture, and the controller 214 can be configured to provide synchronized operation of the aperture 204 and the electronic display 210 as described above. In addition, the camera lens focus unit 206 can operate with the controller 214 to provide synchronized operation with the aperture 204, and in one example, the synchronized operation can be achieved by the controller 214 providing a control signal (e.g., a wireless signal) for the aperture 204 on a single channel. In one example, the receiver / transmitter device 216 receives the control signal wirelessly from the controller (e.g., a provider) and provides three electronic control signals to each of the operating mechanism 232 that moves the aperture 204, the operating mechanism 236 that moves the focus 206, and the serial port 234 of the electronic display 210, for example, through the cable connections 226, 228 and 230. In this example, the focus section operates in synchronization with the aperture, and the electronic display operates in synchronization with the aperture to provide a neutral density level calibrated with the aperture. Alternatively, the electronic display can be calibrated with the focus section, and the controller operates to provide a control signal via a receiver / transmitter device that causes the aperture to operate in synchronization with the focus section, wherein the electronic display operates in synchronization with the focus section to provide a neutral density level calibrated with the focus section. The above examples illustrate several ways in which the electronic display disclosed herein can be calibrated and operated in synchronization with the camera lens aperture and the camera lens focus section. It should be understood that calibration and / or control methods and methods other than those described above can also be used to achieve such synchronized operation of the electronic display, aperture, and focus section, and all such other methods and methods are within the scope of the present description.

[0075] With respect to the examples provided above, it should be understood that the electronic display may be programmed and calibrated in the same manner as described above with respect to the aperture and / or focus section.

[0076] Electronic display synchronized with the camera lens zoom section -In one embodiment, the electronic display may be configured to change the filter as the camera lens zoom portion changes. In such an embodiment, the electronic display is synchronized with the zoom portion such that changes in the zoom portion cause desired / calibrated changes in the filter provided by the electronic display. It is desirable to synchronize the operation of the electronic display with the zoom portion because, in a non-fixed pupil zoom lens, the aperture of the lens changes as the zoom and focus characteristics (macro characteristics) of the lens move through, and the neutral density changes compensate for the aperture difference. In one example, the zoom portion and the electronic display movement may be wirelessly controlled, for example, by a handheld controller 214 or control system as described above. In one example, the controller 214 may be used to control the electronic display synchronized with the zoom portion 208, for example, by control signals or commands sent to the zoom mechanism, wherein the camera lens zoom portion and the electronic display operate on the same control channel. Although the above methods of controlling the electronic display and synchronized zoom portion operation have been disclosed, it should be understood that there are also various different methods or approaches for achieving the same function, and all such other methods and approaches are within the scope of the present disclosure.

[0077] In an example where the electronic display is used as a neutral density filter that changes in sync with the zoom section, it is desirable that the electronic display be specifically programmed to modify a neutral value setting, such as a zoom mode setting. In order to calibrate the camera lens zoom section with the electronic display, the neutral density setting (e.g., zoom mode setting) is modified by erasing a default or previously stored neutral density setting, which can be accomplished by user input to the electronic display by pressing a button, etc. In one example, the electronic display neutral density setting is erased in the same manner as described above so that the aperture and the electronic display 100 are calibrated by the user pressing the inner arrow button 102 and holding it for a certain time (e.g., about three seconds) when the electronic display is in normal mode. In one example, the electronic display has a visual indicator, such as in the form of one or more lights 110. When the neutral density setting (e.g., zoom mode setting) has been erased, for example, after three seconds, the one or more lights will dim to indicate that the erasure is complete. In one example, the visual indicator is in the form of one or more LEDs on the electronic display.

[0078] Once the default or previous neutral density setting (e.g., zoom mode setting) has been erased, the electronic display is input by the user for subsequently programming the neutral density setting (e.g., in zoom mode) to the zoom (during a calibration, matching, or pairing process). In one example, the electronic display enters a programming mode (e.g., zoom mode) by the user pressing and holding an outer arrow button 104 on the electronic display for a period of time. In one example, the outer arrow button 104 is pressed and held until the electronic display provides a visual indication that the programming mode (e.g., zoom mode) has been entered. In one example, the time period is approximately 3 seconds, and the visual indication is the illumination of one or more lights 110 on the electronic display. In one example, the one or more lights are LED indicators that provide a cyan light color indicating that the zoom mode has been entered. Once the electronic display programming mode (e.g., zoom mode) is entered, the electronic display can be programmed to calibrate, match, or pair different states or settings of the zoom.

[0079] In one example, an electronic display is calibrated, matched, or paired with a camera lens zoom portion according to the following method. With the electronic display in normal mode, for example, with the default or previous neutral density setting erased and the electronic display not in an entry state, the camera lens zoom portion is set to a desired initial zoom value for programming with the electronic display. In one example, the zoom value or setting is calibrated, matched, or paired with one or more desired neutral density values ​​or levels of the electronic display. In an example where the electronic display is configured to provide a specific fixed-stop aperture or neutral density setting (e.g., 6 stops), the electronic display is configured to provide five neutral density settings calibrated with the camera lens zoom portion. In such an example, the initial zoom value may be calibrated, matched, or paired with two stops of neutral density, for example, each at ND 0.6. The electronic display is then placed in a programming mode (e.g., a macro focus mode), as described above. In this state, the electronic display neutral density setting can be adjusted by user input (e.g., by using the scroll wheel 106) to adjust and fine-tune the calibration, matching, or pairing of the neutral density level with a particular zoom value or setting. In one example, the neutral density setting is accepted by the electronic display by the user pressing the inner arrow button 102, and the acceptance is visually confirmed by the flashing of the light 110 on the electronic display. The camera lens zoom portion is then moved to the next value or setting, and the electronic display is adjusted to provide another desired neutral density level. In examples where the electronic display is configured with preset neutral density settings, the user can momentarily press the outer arrow 104 button to move to the next neutral density setting. The neural density value can be fine-tuned or adjusted between preset values ​​of the zoom value or setting as described above by using the scroll wheel 106, and the desired neutral density value can be accepted as described above by pressing the inner arrow button 102 and obtaining visual confirmation of acceptance. The process of adjusting the camera lens zoom to the next value or setting and calibrating, matching or pairing the zoom value or setting with the desired neutral density level of the electronic display is repeated until all desired zoom levels or settings have been calibrated, matched or paired with the associated electronic display neutral density level. This is an example method of calibrating the electronic display to the zoom to facilitate synchronized operation between the two.

[0080] In an example where the electronic display is configured with six set neutral density levels or values, it is expected that the final zoom value or setting is no more than five settings removed from the initial zoom value or setting because the range of electronic display neutral density settings for calibration is limited to five settings between ND 0.6 and ND 1.8 when the electronic display is placed in a programming mode (e.g., zoom mode). If the camera usage application or camera user calls for or desires less than five zoom values ​​or settings, the neutral density level may be moved or skipped without moving to a new zoom value or setting during the calibration process.

[0081] Once the electronic display has been calibrated, matched, or paired with the camera lens zoom section, the exposure range can be adjusted as needed, if necessary, for example, if the sun enters or leaves cloud cover. This can be done by placing the electronic display in a programming mode (e.g., zoom mode), as described above. To open the exposure range by a value or setting, the user can press the outer arrow 104 button on the electronic display once. To close the exposure range by a value or setting, the user can press the inner arrow button 102 on the electronic display once. For fine adjustments, the exposure range can also be moved up and down by the user moving the scroll wheel 106 between the two arrow buttons.

[0082] Once the desired calibration of the electronic display and zoom is completed, the programmed neutral density setting can be exited by pressing the outer arrow button 104 on the electronic display and holding it for a period of time (e.g., three seconds) until the LED light is no longer illuminated and the electronic display returns to normal operation. The electronic display is configured to store the programmed calibrated zoom and neutral density settings in onboard memory. If the electronic display is power cycled, the settings will be read from the memory when power is applied. If the electronic display is to be used with a new lens, the calibration process will be repeated to provide the desired synchronized operation of the electronic display and the camera lens zoom portion, in which case the user will erase the existing calibrated neutral density setting associated with the removed lens (as described above) and reprogram and calibrate, match or pair the zoom value or setting of the new lens with the electronic display neutral density level in the manner previously described. Configured in this manner, the electronic display can be programmed to be calibrated for synchronized zoom operation with a variety of different camera lenses.

[0083] While a particular method for calibrating, matching, or pairing an electronic display neutral density level with a camera lens zoom value or setting has been described above, it should be understood that this is merely one method, and that other methods for calibrating, matching, or pairing neutral density levels with zoom values ​​or settings in a similar manner are within the scope of the electronic displays disclosed herein. For example, an electronic display as disclosed herein may have more or less than six neutral density settings, which may be different than those specifically described, and / or may have a continuous gradient of different possible neutral density levels, and for such embodiments, the process of calibrating, matching, or pairing zoom values ​​or settings with such neutral density levels may involve the same general method as described, wherein the zoom values ​​or settings are each calibrated with one or more electronic display neutral density levels. In one example, as the zoom moves from an initial value to a final value, the paired neutral density level of the desired electronic display value increases, thereby reducing the amount of light that passes through the electronic display and reaches the camera lens.

[0084] As an alternative to the above-described methods for calibrating a zoom value or setting to an electronic display neutral density level or setting, the electronic displays disclosed herein can be configured to include a memory having stored therein calibrated zoom values ​​and associated neutral density levels for different types of lenses. For example, the electronic display can be configured such that such existing calibration information can be loaded or downloaded into the memory of the electronic display through known techniques. It should be understood that all such optional processes for calibrating an electronic display to zoom are within the scope of the electronic displays disclosed herein.

[0085] In one example, the user controller can be configured as described above to control the electronic display and the zoom value or setting. In one example, the controller 214 can be configured to control the zoom by a user input as described above, which can be the same or different from the input of the aperture or focus section. In one example, the camera lens zoom section 208 is controlled by a user input different from the aperture or focus section. For the synchronous operation of the electronic display and the zoom section, the controller 214 is configured to control the zoom using one channel. In one example, the controller 214 provides a wireless control signal 224 on one channel received by the receiver / transmitter device 216 disclosed above, which operates to convert the received control signal from the controller and provides an electrical control signal via a cable 237 input to an operating mechanism 238 for moving the zoom section 208 and a cable 230 connected to a serial input 234 of the electronic display 210, respectively. Configured in this manner, when the user operates the controller 214 to change the zoom, the electronic display is also changed to a calibrated neutral density value. Although the above-described methods of controlling the operation and synchronized zoom of an electronic display have been disclosed, it should be understood that there are various different methods or approaches for achieving the same functions, and all such other methods and approaches are within the scope of the present disclosure.

[0086] If desired, the zoom may be operated synchronously with one or more of the aperture or focus sections, wherein the electronic display is calibrated with one of the aperture, focus section, or zoom section in the manner described above. In such an example, the controller may be configured and operated to provide control signals, for example, on a single channel wirelessly received by a receiver / transmitter device, wherein the transmitter device is configured to send control signals to the zoom section and focus section, the zoom section and aperture, or the zoom section, aperture, and focus section, and to the electronic display via separate cables for synchronous movement of the zoom section with one or more of the aperture and focus section, wherein the electronic display is calibrated with one of such camera lens elements.

[0087] Electronic display synchronized with photometerIn one example, an electronic display may be synchronized with a photometer exposure measurement, wherein exposure information provided to the electronic display by the photometer may be operable to change a filter level of the electronic display. Fig.14 A camera system 300 is shown that includes a camera 302, a camera lens system 304, and an electronic display 306. In one example, the electronic display can be configured to contain photometric exposure measurement information stored in its memory, which can be downloaded to the electronic display memory via wireless or wired communication with a source of photometric exposure measurements, for example, in the form of a table of matched photometric exposure measurements with neutral density levels or values, etc. Alternatively, the electronic display can be calibrated by a user in a manner similar to that described for the camera lens element to provide a selected neutral density level paired with the photometric exposure measurement value, for example, by using a button on an electronic device and a sequence of steps for calibration as described above. In one example, a photometer 308 (such as a TENMA 72-7250 digital photometer) can be used to send exposure measurements to the electronic display via a wireless or wired connection to the electronic display, and the electronic display can change the neutral density level generated based on the stored exposure measurement calibration information. In one example, such as where the light meter is used close to the camera system, the light meter exposure measurement can be sent to the electronic display 306 via a cable 310 connected to the electronic display serial input 312. In one example, such as where the light meter is used close to the subject being captured by the camera system, the light meter exposure measurement can be sent wirelessly to the electronic display 306, such as by using a wireless transmitter 314 that wirelessly transmits the exposure measurement 315 to a wireless receiver 316, where the wireless transmitter 314 is connected to the light meter 308 via a cable 318, and the wireless receiver is connected to the serial input 312 of the electronic display 306 via a cable 320.

[0088] In one example, the electronic display can be used in this manner according to at least two different modes of operation. In one example, the electronic display can be operated in a continuous meter mode, where the light meter continuously provides exposure measurement information to the electronic display, and the electronic display changes the neutral density level as needed to handle different exposure measurement values. In one example, the electronic display can be operated in a non-continuous meter mode, where exposure measurement values ​​are intermittently sent to the electronic display, and the neutral density level is then changed based on the received exposure measurement values. In one example, the light meter can be positioned in any position required by a particular camera capture use and / or application, for example, the light meter can be positioned near the camera or can be positioned near an object / image of interest captured by the camera lens.

[0089] Although specific examples of synchronized electronic displays for use with a photometer and methods of using the electronic displays have been described, it should be understood that different methods may exist for implementing the use of such synchronized photometers and electronic displays that provide the same desired functionality, and all such different methods or variations are also within the scope of the electronic display disclosed herein.

[0090] An electronic display having a programmable feature as disclosed herein, for example, a filter level setting, can be configured for placement and use in different camera system positions. As described above, it should be understood that while the electronic display disclosed herein can be placed on the object side of a camera lens, for example, in front of the lens, such a programmable electronic display disclosed herein can be placed between different elements or portions of a camera lens, can be placed between a camera lens and a camera (e.g., behind the lens), or can be placed inside a camera depending on the particular end use, and all such electronic display arrangements are within the scope of the electronic display disclosed herein.

[0091] In one embodiment, the filter can be operated autonomously based on an image received or provided to the camera. A sensor can be used to detect the image provided to the camera, and a control can be provided to the filter input to automatically change the filter based on the received image. For example, if the scene is bright, the filter can be configured to automatically reduce the brightness of the image. The sensor can be located with the camera or can be located elsewhere. In one embodiment, the camera can be configured to provide control of the input to the filter based on the image received by the camera. For example, if the camera (such as a digital image sensor of the camera) detects that it is viewing a bright scene, it can provide control to the input of the filter to reduce the brightness. Therefore, the filter can operate in a feedback loop based on the image.

[0092] The electronic display 12, controller 16, power supply 18 and / or input 20 may include a unit that is removably coupled to the lens system. The unit may include the electronic display 12 and the housing 14 coupled to each other, such as Figure 1 As shown. The unit may be sized so that it is of a similar size and shape to current non-electronic displays, and thus may be substituted for such non-electronic displays, and used with similar shades or other methods of coupling the filter to the lens. In one embodiment, the filter 10 and its components may be integrally formed with the lens system, and may not be removable. In other embodiments, certain components may be separate from the lens system, and certain components may be integrally formed with the lens system. In other embodiments, certain components disclosed herein may be excluded entirely.

[0093] The electronic display 12 may filter the image to a desired amount or pattern. Figure 1 In the illustrated embodiment, the electronic display 12 filters the entire image viewed through the electronic display 12. The image includes a person 32, a cloud 34, and a tree 36. The entire tree 36, the entire cloud 34, and a portion of the person 32 are filtered (the filtering is performed at Figure 1 Filtering may occur by reducing the amount of light from the image transmitted through electronic display 12, or by changing the color of light passing through electronic display 12 from the image, or by otherwise changing the characteristics of light passing therethrough (e.g., by diagonal lines). Filtering may also include emitting light from electronic display 12 overlaid on the image on the object side of electronic display 12. The emitted light may change the color or amount (intensity) of light received by the camera lens.

[0094] In embodiments where light from an image transmitted through the electronic display 12 is reduced, the reduction of light can take various forms. For example, the reduction of light can be similar to a neutral density filter (ND filter), which can filter all colors of an image substantially equally. However, the amount of light filtered can be electronically varied, allowing the electronic display to function as an electronically variable neutral density filter. In one example, the reduction of light can be caused by liquid crystals in the electronic display 12 without allowing a desired amount of light to pass through the electronic display 12. The transmittance of the liquid crystals can be electrically varied. The transmittance can range from about 50% (similar to a 0.3ND filter), to about 25% (similar to a 0.6ND filter), to about 12.5% ​​(similar to a 0.9ND filter), to about 6.25% (similar to a 1.2ND filter), to about 3.125% (similar to a 1.5ND filter), to about 1.5625% (similar to a 1.8ND filter), to about 0.78125% (similar to a 2.1ND filter), and all transmittances above, below, and between these ranges. Additionally, in embodiments where color filters are used with the electronic display 12, the color of light passing through individual pixels of the electronic display 12 can be changed. The transmittance (or density of filtered light) can be electronically varied to any amount (e.g., 99%, 65%, etc.) as desired. The color of light passing through the electronic display 12 can be changed to any desired color of the spectrum.

[0095] In embodiments utilizing organic light emitting diodes (OLEDs), the OLEDs may be configured to emit light at various brightness levels, and in embodiments utilizing color filtering, color levels. Electronic display 12 may filter an image by adding light from the OLEDs to the light from the image at a particular brightness and color (in embodiments utilizing color filtering). Light from the image may pass through electronic display 12 and be modified by the added light from the OLEDs. This modification may occur throughout the image (e.g., Figure 1), or it can occur pixel by pixel. In one embodiment, the OLED can be configured to emit light of a certain brightness, which can be reduced to effectively reduce the brightness of the image.

[0096] Due to the electronic properties of electronic display 12, one or more portions of electronic display 12 may have varying filtering characteristics. The variation may occur on a pixel-by-pixel basis. For example, Figure 2 An electronic display 12 having a portion 38 of the electronic display 12 having a filtered image is shown, while another portion 40 of the display does not have a filtered image. The electronic display 12 accordingly operates as a graded filter. The transition between the filtered portion and the non-filtered portion may be abrupt or may be smooth, as desired.

[0097] Figure 3 An electronic display 12 is shown with selected filtered portions. Figure 3 In the example of FIG. 3 , the tops of the trees 36 and the clouds 34 are filtered, while the rest are not filtered. A “burn and dodge” effect can be produced.

[0098] The type and location of filtering of electronic display 12 may occur on a pixel-by-pixel basis. Figures 1 to 3 As shown, various types and locations of filtering can be provided as desired. Variations in filtering can occur based on control of inputs provided to the filters. Control can take various forms, as disclosed herein.

[0099] The changes in the filtering of the electronic display 12 may occur dynamically. The type and location of the filtering may be changed dynamically. For example, a user may electronically control the electronic display 12 to quickly shift the filtering of individual pixels so that various filtering patterns are produced (e.g., from Figure 1 The filter pattern shown in Figure 1 is dynamically shifted to Figure 2 The pattern shown in Figure 3 ). The user may set any characteristics of the filtering via controls that may be received from the control terminal 30 or the like. The filtering may be set on a pixel-by-pixel basis. For example, using Figure 4 The control interface shown allows the user to select individual pixels to have desired filtering characteristics.

[0100] Filtering can be varied smoothly over a range of densities. Filtering can be used to form custom filter patterns. Filtering can be used in conjunction with camera controls. For example, the camera's aperture and filtering can be varied to bring background objects into or out of focus while foreground objects remain in focus (a form of aperture filtering).

[0101] An advantage of the electronic display 12 is that non-electrical filters are typically used in camera systems and need to be manually swapped out of the camera system. Furthermore, the filter may not be changed during filming. Furthermore, if the camera is on an elevated crane, the crane needs to be lowered in order to manually swap out the filter. The electronic display 12 can allow remote modification of the variable filter. The filter can be changed dynamically during filming. The user does not need to physically touch the camera.

[0102] Fig. 6A An embodiment of a portion of an electronic display 12 using liquid crystals is shown. This portion of the display 12 may include a front panel 42 and a rear panel 44, which may correspond to the respective front and rear surfaces of the display 12. The panels 42, 44 may be made of optical glass. The display 12 may include polarization filter panels 46, 48 oriented orthogonally to each other. A control layer 50, which may include transistors and electrodes, may be utilized. Liquid crystals 52 are used and may be divided into an array of pixels 22. In embodiments where color filtering is required, color filters 54 may be used. The color filter 54 may include red, green, and blue sub-pixels that are combined to form a color pixel. The light passing through the colored sub-pixels determines the color of the light passing through the electronic display 12. According to the principles of liquid crystal display (LCD) technology, the voltage to the liquid crystal 52 may be changed to change the orientation of the crystals. Based on the voltage, the liquid crystal 52 may transmit a varying amount of light to the crystals. However, in the electronic display 12, unlike standard LCD technology, there is no backlight. The image itself generates the light passing through the electronic display 12. In other embodiments, electronic display 12 using liquid crystals may have a different purpose and structure than shown. For example, in one embodiment, a single pixel (1×1 arrangement) may be utilized and may be used to change the brightness of an image to a desired amount. In one embodiment, the order or presence of inner layers 50, 52, 54 may be varied depending on the desired structure of electronic display 12. In one embodiment, the presence or structure of polarizing filter panels 46, 48 may be varied as desired.

[0103] Figure 6B An embodiment of a portion of an electronic display 12 using OLEDs is shown. The portion of the display 12 may include a front panel 56 and a rear panel 58, which may correspond to the respective front and rear surfaces of the display 12. The panels 56, 58 may be made of optical glass. The display 12 may include a cathode 60 and an anode 62. An electrical controller 64 may be provided in the form of a transistor matrix. An organic layer 66 may be provided that is divided into an array of pixels 24. In an embodiment that provides color filtering, the pixels 24 may be arranged into sub-pixels that emit a color. As shown in FIG. Figure 6B, three pixels 24 are shown, which may be red, green, and blue pixels. The pixels 24 may be arranged as sub-pixels that emit a color, such as a purple or orange emission color. In other embodiments, the color may not be provided by the OLED. The OLED panel may be transparent and may allow light from an image to pass through the OLED panel, which is modified by the light from the OLED. The configuration of the OLED may be similar to Figure 6B The configurations shown are different. In one embodiment, the configuration may be active matrix (AMOLED), or in other embodiments, the configuration may be passive matrix (PMOLED). In one embodiment, a single OLED pixel may be provided (1×1 arrangement).

[0104] FIG. 6A to FIG. 6D The panel shown in may have a hard anti-reflection coating. Ravg may be less than 0.2% at 400-700 nm with an angle of incidence of 15 degrees. The transmitted wavefront error may preferably be less than 1 / 2λ.

[0105] Although Fig. 6A The illustrated embodiment uses liquid crystals, which illustrates a certain type of liquid crystal display architecture, and it should be understood that electronic devices using liquid crystals for electronic display purposes as disclosed herein may have other types of architectures, wherein all such different architectures are within the scope of the present disclosure. Figure 6C 6E, which shows an embodiment of an electronic display 100 using a liquid crystal having Fig. 6A In this example, the liquid crystal is arranged in a guest-host liquid crystal architecture, which includes a liquid crystal cell filled with two materials; namely, a dye material or "guest", and a liquid crystal material or "host". In one example, both the guest material and the host material are shaped like rods inside the cell. The transmission state of this electronic display can be controlled by different orientations of the liquid crystal layer.

[0106] The transmission of light through an electronic display is controlled by a liquid crystal guest-host dye layer. By applying different voltages across this layer, the orientation of the directors of the liquid crystal can be changed to different states. Since the chemical structure of the dye molecules is similar to that of the liquid crystal molecules, the dye molecules will align with the liquid crystal directors. Figures 6C to 6D An electronic display 100 is shown, and a schematic representation of the director structure is provided for two representative states. Polarization dependent absorption occurs when unpolarized light is incident on the dye material. Introducing a twist in the liquid crystal guest dye layer, the orientation of the dye will be different through the liquid crystal layer, so the absorption becomes more independent of polarization.

[0107] Figure 6C The electronic display 100 is shown in a first state, wherein the liquid crystal directors are aligned 102 to reduce the transmission of light therethrough. Fig.6D The electronic display 100 is shown in a second state, wherein the liquid crystal directors are aligned 104 to increase the transmission of light therethrough. The change in orientation of the liquid crystal directors changes based on an electric field applied to the electronic display.

[0108] In other embodiments, other forms of electronic displays may be used.

[0109] Fig. 7A An embodiment of an electronic panel 61 is shown in which liquid crystals 63 are used to filter an image by diffusing light. The liquid crystals can be configured to randomly orient themselves when a voltage or other form of energy is applied or removed from the liquid crystals. When the orientation of the liquid crystals changes, scattering of light can result, which can cause light diffusion. The degree of diffusion can be changed by changing the amount of voltage or other form of energy applied or removed from the liquid crystals. Fig. 7A A random orientation of the liquid crystals is shown.

[0110] Figure 7B An embodiment of an electronic panel 65 is shown in which liquid crystals 67 or particles (e.g., fiberglass fragments) are used to filter an image by flashing light. The liquid crystal or other particles can be configured to orient themselves in one direction when a voltage or other form of energy is applied or removed. For example, the liquid crystal or other particles can be configured to orient themselves in a horizontal direction. When the orientation of the liquid crystals or particles is arranged horizontally, a horizontal spreading of the light passing through the panel 65 can occur, similar to the operation of a "stripe" filter. In other embodiments, other directions of alignment and spreading can be provided. For example, vertical flaring or diagonal flaring can be provided, also similar to the operation of a "stripe" filter. In one embodiment, the liquid crystal or other particles can be configured to orient themselves radially so that a radial spreading occurs. The degree of burning can be changed by changing the amount of voltage or other form of energy applied or removed from the liquid crystal or particles, which will change the orientation of the liquid crystal or particles accordingly. Figure 7B A horizontal orientation of the liquid crystals or particles is shown, resulting in a horizontal spreading of the light (although other orientations may also be provided).

[0111] In one embodiment, a combination of liquid crystals and OLEDs may be utilized. Figure 7C A configuration of an electronic panel 69 is shown, where an electronic panel 71 including one or more OLEDs is used in combination with an electronic panel 73 including liquid crystals. The panels 71, 73 can be operated according to the methods disclosed herein for respective OLED panels and liquid crystal panels. The panels 71, 73 can be configured in a stacked orientation in which light passes through the two panels 71, 73. Thus, the electronic panel 73 can darken or lighten an image (or produce other optical effects disclosed herein), and the electronic panel 71 can add overlay light on the resulting image to produce filtered light.

[0112] The electronic panels disclosed herein can be controlled by the devices, systems and methods disclosed herein. Combinations of panels and effects of panels can be provided as needed.

[0113] Figure 8 A side view of a camera system 70 is shown. The camera system 70 may include a camera 72 and may include a lens system 74. The lens system 74 may include a camera lens 76 and may include a light shield 78. The light shield 78 may include a filter slot 80 for receiving the optical filter 10. The optical filter 10 may be located on an object side 82 of the camera lens 76 (opposite to an image side of the camera receiving an image). The camera lens 76 may include one or more individual lens elements.

[0114] The filter 10 is removably coupled to a light shield 78. The light shield 78 may be a conventional light shield for a movie camera.

[0115] In other embodiments, other forms of coupling the filter 10 to the lens system 74 or the camera system 70 may be utilized. For example, a threaded connection, a snap-on connection, or other form of mechanical connection for coupling may be provided.

[0116] Fig. 9 A front perspective view of the camera system 70 is shown. The filter 10 is mounted in a light shield 78.

[0117] Fig.10 An embodiment is shown in which the filter 10 is located between the camera lens 76 and the image receiver 69 of the camera 72. The image receiver 69 may include a digital sensor or film for receiving the camera image, or other form of image receiver. The filter 10 can be configured to provide the filtering disclosed herein on the image side of the camera lens 76 and the object side of the image receiver 69. A plurality of lens elements 73, 75, 77 are shown as including the lens 76. The filter 10 is located in the optical path of the camera system 71. In certain embodiments, the filter 10 may preferably include an OLED for providing the OLED filtering disclosed herein. The filter 10 may be removably or permanently coupled to the camera system 71.

[0118] In embodiments herein, the camera 72 may be a camera for moving images (film or digital camera), or may be a still image camera, for example, a camera for still photography. The camera may be for cinematic use (filmmaking), or may be for non-cinema or commercial purposes. In one embodiment, the camera may be a mobile device (smartphone or other form of mobile device).

[0119] For example, Fig.11A filter 79 including an electronic display 81 according to embodiments disclosed herein is shown. The filter 79 is coupled to the object side of a camera lens 83 of a camera of a mobile device 85. The filtering disclosed herein can be provided. The filter 79 is removably coupled to the mobile device 85. The removable coupling can be formed by adhesive, screws, or snap fits or other forms of coupling. In one embodiment, the filter 79 can be positioned on the image side of the camera lens 83 and can therefore be permanently coupled to the mobile device 85.

[0120] In one embodiment, the filters, electronic displays, and other devices, systems, and methods are not limited to use with cameras. The filters, electronic displays, and other devices, systems, and methods can be used in other optical implementations, such as augmented reality viewers (including headsets, cell phones, etc.) and virtual reality viewers (including headsets, cell phones, etc.).

[0121] The present disclosure is not limited to the devices and systems disclosed herein, but also extends to all methods of using, providing or performing any of the devices and systems disclosed herein and their respective features.

[0122] Finally, it should be understood that although aspects of this specification are highlighted by reference to specific embodiments, it will be readily understood by those skilled in the art that these disclosed embodiments are only illustrative of the principles of the subject matter disclosed herein. Therefore, it should be understood that the disclosed subject matter is by no means limited to the specific methods, protocols and / or reactants described herein, etc. In this way, various modifications or changes or replaceable configurations can be made to the disclosed subject matter according to the teachings herein without departing from the spirit of this specification. Finally, the terms used herein are only used for the purpose of describing specific embodiments, and are not intended to limit the scope of the systems, devices and methods disclosed herein, which are limited only by the claims. Therefore, systems, devices and methods are not limited to what is precisely shown and described.

[0123] Certain embodiments of systems, devices, and methods are described herein, including the best modes known to the inventors for performing the systems, devices, and methods. Of course, variations on these described embodiments will become apparent to those of ordinary skill in the art upon reading the above description. The inventors expect that such variations will be appropriately adopted by those skilled in the art, and the inventors wish to practice these systems, devices, and methods in addition to the specific descriptions herein. Therefore, the systems, devices, and methods include all modifications and equivalents to the subject matter described in the claims appended to this application, as permitted by applicable law. In addition, any combination of the above-described embodiments in all possible variations thereof is included by the systems, devices, and methods, unless otherwise indicated herein or clearly contradicted by the context.

[0124] The grouping of optional embodiments, elements or steps of systems, devices and methods should not be construed as limiting. Each group member may be cited and claimed individually or in any combination with other group members disclosed herein. It is expected that one or more members of a group may be included in or deleted from a group for reasons of convenience and / or patentability. When any such inclusion or deletion occurs, this specification is deemed to include the modified group, thereby completing the written description of all Markush groups used in the appended claims.

[0125] Unless otherwise indicated, all numbers used in the specification and claims expressing features, items, quantities, parameters, attributes, terms and the like are to be understood as being modified in all instances by the term “about.” As used herein, the term “about” means that the feature, item, quantity, parameter, property, or term so defined encompasses approximations that may vary, yet are capable of performing the desired operations or processes discussed herein.

[0126] The terms "a", "an", "said" and similar references used in the context of describing systems, devices and methods (particularly in the context of the following claims) should be interpreted as covering both the singular and the plural, unless otherwise indicated herein or the context clearly contradicts. All methods described herein can be performed in any suitable order, unless otherwise indicated herein or the context clearly contradicts. The use of any and all examples or exemplary language (e.g., "such as") provided herein is intended only to better illustrate the systems, devices and methods, without limiting the scope of the systems, devices and methods otherwise claimed. Any language in this specification should not be interpreted as indicating any unclaimed element that is essential to the practice of the systems, devices and methods.

[0127] All patents, patent publications, and other publications cited and identified in this specification are individually and expressly incorporated herein by reference in their entirety for the purpose of describing and disclosing, for example, the compositions and methods described in these publications that can be used in conjunction with systems, devices, and methods. These publications are intended only for disclosure prior to the filing date of this application. Nothing in this regard should be construed as an admission that the inventor is not entitled to advance disclosure by virtue of prior invention or for any other reason. All statements regarding the dates or contents of these documents are based on information available to the applicant and do not constitute an admission that the dates or contents of these documents are correct.

Claims

1. A filter for use with a camera, the filter comprising: an electronic display configured for attachment to a camera lens system to filter an image transmitted to a camera, wherein the electronic display includes a filter level setting calibrated with at least one of an aperture T-stop setting of the camera lens, a focus setting of the camera lens, a zoom setting of the camera lens, and an exposure measurement of a light meter; a controller configured to electrically control light filtering of the electronic display; and a receiving device for receiving a control signal for controlling the controller; Wherein, the electronic display is configured to operate synchronously with at least one of the camera lens aperture, the camera lens focus section, the camera lens zoom section and the light meter to change the filter setting based on at least one of different aperture T-stop settings, different focus settings, different zoom settings and different exposure measurement values ​​according to the corresponding calibrated filter level settings.

2. The optical filter according to claim 1, wherein The electronic display includes liquid crystals for filtering the image.

3. The optical filter according to claim 1, wherein The electronic display is a neutral density filter and the filter level settings are different neutral density levels.

4. The optical filter according to claim 1, wherein The electronic display includes one or more organic light emitting diodes therein for filtering the image.

5. The filter of claim 1, further comprising a housing coupled to the electronic display, and wherein the controller and the receiving device are positioned within the housing.

6. The optical filter according to claim 4, wherein The housing includes at least a portion of a frame for the electronic display.

7. The optical filter according to claim 1, wherein The electronic display is configured to be removably coupled to a light shield to couple to the camera lens.

8. The optical filter according to claim 1, wherein The filter level setting of the electronic display is calibrated with the aperture T-stop setting of the camera lens, and the electronic display operates in sync with the camera lens aperture.

9. The optical filter according to claim 1, wherein The filter level setting of the electronic display is calibrated with the focus setting of the camera lens, and the electronic display operates in sync with the camera lens focus.

10. The optical filter according to claim 7, wherein The filter level setting of the electronic display is calibrated with the aperture setting of the camera lens, wherein the electronic display operates synchronously with the camera lens aperture, and the camera lens aperture operates synchronously with the camera lens focus.

11. The optical filter according to claim 1, wherein The filter level setting of the electronic display is calibrated with the exposure measurements of the light meter, and the electronic display operates in sync with the light meter.

12. The optical filter according to claim 1, wherein The electronic display includes a first portion and a second portion, each of which is configured to allow light to pass through the first portion and the second portion, and the controller is configured to electrically control filtering of the electronic display so that the second portion does not filter the image while the first portion filters the image.

13. The optical filter according to claim 12, wherein The controller is configured to electronically control filtering of the electronic display such that the first portion does not filter the image while the second portion filters the image.

14. The optical filter according to claim 1, wherein The receiving device includes a wireless signal receiver.

15. The optical filter according to claim 1, wherein The receiving device includes a serial input port.

16. The optical filter according to claim 1, wherein The filter is attached to the object side of the camera lens system.

17. An optical filter for a camera system, the optical filter comprising: an electronic display configured to be coupled to a portion of the camera system in an optical path of the camera system and configured to filter an image of the electronic display passing through the camera system, the electronic display including liquid crystals configured to enable the electronic display to provide different levels of neutral density filtering of light passing through the electronic display; means for storing different programmed neutral density filter settings calibrated to at least one of different aperture T-stop settings of a camera lens, a focus setting of the camera lens, a zoom setting of the camera lens, and exposure measurements of a light meter; a controller configured to control light filtering of the electronic display; and means for receiving a control signal for controlling said controller; wherein the electronic display is controlled to operate synchronously with at least one of a camera lens aperture, a camera lens focus section, a camera lens zoom section, and the light meter to change the neutral density level provided by the electronic display based on at least one of different aperture T-stop settings, different focus settings, different zoom settings, and different exposure measurement values ​​according to a corresponding calibrated filter setting.

18. The optical filter according to claim 17, wherein The filter is configured to be coupled to the camera system between a camera lens of the camera system and an image receiver of the camera system.

19. The optical filter according to claim 17, wherein The optical filter is configured to be coupled to the camera system at an object side of a camera lens of the camera system.

20. The filter of claim 17, further comprising a processor configured to enable the filter to be programmed to assign different neutral density filter settings to at least one of the different aperture T-stop settings, the different focus settings, the different zoom settings, and the different exposure measurement values, thereby providing a calibrated filter setting.

21. The optical filter according to claim 17, wherein The calibrated filter setting is calibrated with the camera lens aperture, and the electronic display operates in synchronization with the camera lens aperture.

22. The optical filter according to claim 17, wherein The calibrated filter setting is calibrated with the camera lens focus, and the electronic display operates in synchronization with the camera lens focus.

23. The optical filter according to claim 17, wherein The calibrated filter setting is calibrated with the camera lens aperture, and the electronic display operates in synchronization with the camera lens aperture, and the camera lens focus operates in synchronization with the camera lens aperture.

24. The optical filter according to claim 17, wherein The calibrated filter setting is calibrated with the exposure measurement, and the electronic display operates in synchronization with the light meter.

25. A method of filtering an image of a camera system, the camera system comprising a camera, a camera lens, and an electronic display coupled to the camera system, the method comprising: inputting into the electronic display device a filter setting calibrated with at least one of an aperture T-stop setting of the camera lens, a focus setting of the camera lens, a zoom setting of the camera lens, and an exposure measurement of a light meter; as well as The electronic display is used to filter the amount of light passing through the camera, wherein during the filtering step, the electronic display is operated synchronously with at least one of a camera lens aperture, a camera lens focus section, a camera lens zoom section, and a light meter to provide calibrated filter settings associated with the corresponding camera lens aperture, the camera lens focus section, the camera lens zoom section, and the light meter.

26. The method according to claim 25, wherein: The inputting step includes programming at least one of the aperture T-stop setting, the focus setting, the zoom setting, and the exposure measurement value using an associated electronic display filter setting to thereby develop the calibrated filter setting.

27. The method according to claim 25, wherein: The filtering step is provided by liquid crystals in the electronic display device to provide neutral density filtering.

28. The method according to claim 25, wherein: The electronic display device operates synchronously with the camera lens aperture, and during the filtering step, the electronic device provides filter settings calibrated with the camera lens aperture setting.

29. The method according to claim 25, wherein: The electronic display device operates synchronously with the camera lens focusing section, and during the filtering step, the electronic device provides a filter setting calibrated with the camera lens focusing section.

30. The method of claim 25, wherein: The electronic display device operates synchronously with the camera lens aperture, the camera lens aperture operates synchronously with the camera lens focus, and during the filtering step, the electronic device provides a filter setting calibrated with the camera lens aperture.

31. The method of claim 25, wherein: The electronic display device operates synchronously with the photometer, and during the filtering step, the electronic device provides filter settings calibrated with the photometer.

Images