Digital imaging system for converting film camera into digital camera

Abstract

The invention relates to a digital imaging system for converting a film camera into a digital camera, to a method for capturing digital images by a film camera using a digital imaging system, and to a kit of parts comprising a digital imaging system for converting a film camera into a digital camera.

Description

Technical Field

[0001] The present invention relates to a digital imaging system for converting a film camera to a digital camera, a method for capturing digital images with a film camera using a digital imaging system, and a parts kit including the digital imaging system for converting a film camera to a digital camera. Background Technology

[0002] Despite the widespread availability of digital cameras today, analog film cameras are still in use, and many people still prefer to take photos with them. This is mainly due to the lack of complex exposure options typically offered by digital cameras, combined with the challenge of capturing high-quality photos without the aid of digital aids such as programmed scene modes like portrait, landscape, or fireworks. However, analog film, and the process of processing exposed film to obtain images, was quite expensive and laborious. In fact, traditionally, the processing of exposed film was done by professional companies, resulting in a long time before the photos were ready.

[0003] To address these issues, numerous solutions have been proposed. For instance, documents CN 2901369, WO 2023 / 228593 A1, and US 11,233,950 provide electronic devices for converting film cameras to digital cameras. However, these solutions are complex to implement and require significant effort and processing power to achieve digital images from analog film cameras. Summary of the Invention

[0004] Technical issues Therefore, there is an urgent need to provide a more efficient and reliable device for converting film cameras to digital cameras. This digital imaging system should be easy to operate and install. Furthermore, the digital imaging system should be able to capture complex images that are not available with existing technology equipment. Further, an object of the present invention is to provide a digital imaging system that can be easily adapted to different types of analog film cameras, especially film cameras with cassette systems.

[0005] These objectives, as well as further objectives not explicitly stated but which may be derived or discerned from the connections discussed herein, are achieved by a digital imaging system for converting a film camera into a digital camera, having all the features of claim 1.

[0006] Technical solution The present invention provides a digital imaging system for converting a film camera into a digital camera, the digital imaging system comprising an image sensor module and a cartridge module, wherein the image sensor module and the cartridge module can be separated and connected to each other via contact pins; The image sensor module includes an image sensing array, a processing unit coupled to the image sensing array for reading images from the image sensing array, a first memory coupled to the processing unit for storing digital images derived from the images read from the image sensing array and processed by the processing unit, and a sensor for detecting the movement of the film advance crank. The dark box module includes: a second memory connected to the first memory via contact pins for long-term storage of digital images derived from images read from the image sensor array; an on / off switch operable by the rewinding lever of a film camera; and a battery and a USB port for charging the battery. The digital imaging system includes a sound output unit.

[0007] Digital imaging systems convert film cameras into digital cameras. Film cameras are preferably single-lens reflex (SLR) cameras using 35mm film. However, a film camera can be any other camera that includes a mechanical shutter. Film cameras are not limited to SLR cameras, and the film is not limited to 35mm film. Mechanical shutters, such as focal plane shutters or leaf shutters, like the Compur shutter, include a mechanical component that can be opened and closed. Any mechanical shutter can be used as long as it contains a light-blocking curtain (or light-blocking blades) for opening and closing an opening (light path opening and closing device) through which light passes.

[0008] A film camera preferably comprises a camera body, lens, shutter button, shutter speed dial, film advance crank lever, rewinding lever, view finder, and rear cover as its main components. The film camera preferably includes a cartridge chamber, rewinding fork, and take-up spool inside the camera body.

[0009] The shutter button is used to open and close the shutter curtain. The shutter button is preferably located on the upper surface of the camera body, on the right side when viewed from the rear. However, the shutter button can also be located in any other suitable position. When the shutter button is pressed, the shutter curtain moves at the shutter speed set by the shutter speed dial. The exposure time of the film is determined by the shutter speed.

[0010] The film advance crank is an example of a film winding operation component for winding film. The film advance crank is preferably located on the upper surface of the camera body, next to the shutter speed dial, and connected to the take-up shaft.

[0011] Each time the film advance crank is operated, the take-up shaft rotates.

[0012] The features of the film camera described above and below are useful for taking photographs using the digital imaging system according to the present invention.

[0013] The image sensor module and the cassette module can be separated and connected to each other via contact pins. The contact pins provide power to the image sensor module and enable data transmission between the image sensor module and the cassette module. The number and type of contact pins depend on the requirements of the data protocol used for data and energy transmission. This implementation allows the digital imaging system to be adapted to specific needs. In particular, different cassette modules can be used with a single image sensor, for example, to easily simulate specific ISO values ​​with a specific cassette module. The same applies to simulating other characteristics of film, such as film sharpness. This simplifies the operation of the digital imaging system and avoids operational errors. Preferably, the image sensor module and the cassette module are magnetically secured together. Alternatively, the image sensor module and the cassette module can be mechanically secured together, for example, via plug contacts.

[0014] More preferably, the contact pins of one of the modules and the cassette module are disposed on a strap; more preferably, the contact pins of the image sensor module are disposed on the strap. This strap allows for length adjustment between the cassette and the sensor module to accommodate different types of cameras. Preferably, the strap can slide into either the image sensor module or the cassette module.

[0015] In a preferred embodiment, the sensor for detecting the movement of the film advance crank includes a thong for measuring the rotational movement of the film camera's internal take-up shaft. The thong includes a coil for measuring changes in the magnetic field. The film camera's take-up shaft includes a magnetic element, preferably a magnetic strip, which is fixed to the take-up shaft by an adhesive, preferably to the winding shaft of the take-up shaft. This embodiment improves system reliability and reduces system power consumption. Alternatively, other sensors for detecting the movement of the film advance crank can be used; for example, an image sensor module can be connected to a roller mechanism that is spring-loaded against the film camera's take-up shaft, and the rotation of the take-up shaft can be measured as the movement of the advance crank.

[0016] Preferably, the image sensor module includes a retaining magnet for securing the sensor module to the body of the film camera, more preferably to the back of the shutter. Surprisingly, this feature significantly improves the operability of this digital imaging system. In particular, switching between film cameras is very easy and operational errors can be avoided. However, other mounting methods for the image sensor module are also possible, such as securing the image sensor module to the back cover using an adhesive, preferably a pressure-sensitive adhesive.

[0017] Furthermore, a dark box module including a memory card slot, preferably an SD card slot, can be provided.

[0018] Additionally, a dark box module including a display screen, preferably an OLED or LCD display screen, may be provided.

[0019] According to a preferred embodiment, the dark box module preferably includes a wireless communication module, and more preferably includes a Bluetooth or WLAN module.

[0020] More preferably, the Bluetooth module is capable of pairing with Bluetooth headphones to transmit sound output. The pairing mode of the cassette module can be activated by, for example, a control element or an on / off switch.

[0021] This embodiment enables the use of digital imaging systems in situations where noise should not disturb others, such as churches, museums, or similar locations. Alternatively, the image sensor module may include a wireless communication module as described above. However, it is preferred that the cassette module include such a module based on the area required for such a module.

[0022] In addition, a cassette module including data for adjusting ISO values ​​can be provided. Preferably, the data for adjusting ISO values ​​can be selected via a control element disposed on the cassette module or via wireless data transmission.

[0023] Furthermore, the data can be fixed so that a specific cassette module can simulate film with a specific ISO value.

[0024] In another embodiment, an image sensor module may be provided that includes data for adjusting ISO values. Preferably, the data for adjusting ISO values ​​can be selected via a control element disposed on the image sensor module.

[0025] Adjusting the ISO value allows the digital imaging system to adapt to specific lighting and exposure conditions. This embodiment simplifies camera operation.

[0026] Furthermore, a cassette module may also be provided, which includes data on the activation time of the image sensor array for the image sensor module. Preferably, the data on the activation time of the image sensor array for the image sensor module can be selected via a control element disposed on the cassette module or via wireless data transmission. Digital imaging systems require energy during the activation of the image sensor array. Surprisingly, variations in the activation time can achieve energy savings and extended battery life. Further improvements achievable through this feature, as well as methods for capturing digital images, will be described in more detail below.

[0027] The dark box module includes a battery. The battery can be selected based on the user's needs and available capacity. There are no specific limitations on this.

[0028] However, conventional and commercial batteries are preferred, especially lithium-ion batteries.

[0029] The cassette module includes a USB port for charging the battery. Preferably, the USB port of the cassette module is connected to a second memory of the cassette module and is designed for data transfer.

[0030] The image sensing array can be adjusted according to specific requirements known in the art. Preferably, the area of ​​the image sensing array of the image sensor module is in the range of 220 mm². 2 Up to 870 mm 2 Preferably 320 mm 2 Up to 800 mm 2 .

[0031] Furthermore, the cassette module may be provided with data for selecting film analogues of digital images. Preferably, the data for selecting film analogues of digital images can be selected via control elements disposed on the cassette module or via wireless data transmission.

[0032] Furthermore, the cassette module may include data for selecting a sharpness value. Preferably, the data for selecting the sharpness value can be selected via a control element disposed on the cassette module or via wireless data transmission.

[0033] In a preferred embodiment, the cassette module may be provided with data for selecting a dynamic range value. Preferably, the data for selecting the dynamic range value can be selected via a control element disposed on the cassette module or via wireless data transmission.

[0034] In another preferred embodiment, the cassette module may include data for adjusting white balance. Preferably, the data for adjusting white balance can be selected via a control element disposed on the cassette module or via wireless data transmission.

[0035] Preferably, the on / off switch of the junction box module includes a neutral position, and more preferably, after the switch rotates, it returns to the neutral position by a spring force.

[0036] More preferably, the on / off switch of the junction box module includes at least one button triggered by rotational movement; more preferably, the on / off switch of the junction box module includes two buttons triggered by rotational movement, one button being triggered in a clockwise direction and the other button being triggered in a counterclockwise direction.

[0037] In another preferred embodiment, the on / off switch of the junction box module includes at least two, preferably at least three, rotational positions defining at least two, preferably at least three, operating modes.

[0038] Preferably, the on / off switch for the cassette module may include a sensor for determining up / down movement.

[0039] Furthermore, a junction box module may be provided, including data for selecting an action or operating mode triggered by the movement of an on / off switch of the junction box module. Preferably, the data for selecting the action or operating mode triggered by the movement of the on / off switch of the junction box module can be selected via a control element disposed on the junction box module or via wireless data transmission.

[0040] The actions or operating modes triggered by the movement of the on / off switch of the dark box module will be described in more detail below, along with the method of capturing digital images.

[0041] Another subject of the present invention is a method for capturing digital images with a film camera using a digital imaging system according to the present invention.

[0042] Preferably, the rotational movement of the film advance crank activates the image sensor array of the image sensor module. More preferably, the rotational movement of the film advance crank emits a sound indicating that the image detection process is ready. In another embodiment of the invention, the image sensor array of the image sensor module can be activated by an on / off switch operated by the film camera's rewind lever.

[0043] More preferably, the system can be configured such that: operating the film advance crank of the film camera indicates the end of the image detection process; the image from the image sensor array is read out and processed by the processing unit; the digital image derived from the image read out from the image sensor array and processed by the processing unit is stored in a first memory connected to the processing unit for storing the digital image; the image sensor array of the image sensor module is reactivated to acquire another image; and a sound indicating that the image detection process is ready is emitted again. Preferably, after the image detection process ends, the digital image based on the image processed in the image sensor module and stored in the first memory connected to the readout circuit is transferred to the second memory of the cassette module, and a sound indicating the transfer of the digital image is provided. This embodiment provides a remarkable improvement in the efficiency and operability of the digital imaging system. The digital imaging system provides the user with clear, immediate feedback on the operating status and the ability to quickly capture multiple images in a short period of time.

[0044] Furthermore, the processing load is reduced.

[0045] Preferably, the processing unit reads and processes the image from the image sensor array only when the image sensor array of the image sensor module is in active mode. More preferably, the active mode is indicated by a sound indicating that the image detection process is ready. If the digital imaging system does not detect activation of the film advance crank or rewind lever of the film camera within a specified time period, it is preferable not to process the image. This embodiment simplifies the operation of the digital imaging system and saves energy.

[0046] Preferably, it can be provided that the image sensing array of the image sensor module is deactivated after a specified period of time, and / or the activation mode of the image sensing array of the image sensor module ends after a specified period of time.

[0047] According to a preferred embodiment, the specified time period is between 10s and 120s, preferably between 20s and 40s. According to a further preferred embodiment, the specified time period is between 60s and 1200s, preferably between 120s and 600s. The specified time period depends on the type of image to be captured. In the case of double exposure or long exposure, a longer specified time period is preferred. Conversely, in typical daytime photography, a shorter specified time period is more suitable. Note that in the preferred embodiment, operating the film advance crank of the film camera indicates the end of the image detection process and reactivates the image sensor array of the image sensor module to acquire another image; therefore, in this embodiment, multiple photos can be taken in a short period of time.

[0048] Preferably, it can be provided that: after the image sensing array of the image sensor module is deactivated after a specified period of time and / or after the active mode of the image sensing array of the image sensor module ends after a specified period of time, no data is saved or processed.

[0049] Furthermore, the rotational movement of the rewind lever can act on the on / off switch of the cassette module, and preferably deactivate the image sensing array of the image sensor module. More preferably, the rotational movement of the rewind lever acts on the on / off switch of the cassette module, and any audible audible signal indicates that the image detection process is ready.

[0050] Depending on the operating mode, images can be discarded or processed and stored.

[0051] Furthermore, the rotational movement of the rewind lever can act as an on / off switch of the cassette module, deactivating the image sensor array of the image sensor module, and discarding the image measured by the image sensor array, acquired by pressing the shutter button of the film camera but not processed by the processing unit and stored in a first memory connected to the processing unit. Preferably, the rotational movement of the rewind lever acts as an on / off switch of the cassette module and stops any sounds indicating that the image detection process is ready. Preferably, the rotational movement of the rewind lever acts as an on / off switch of the cassette module and stops any sounds indicating that the image detection process is ready, and provides a sound indicating that no digital photograph has been stored.

[0052] In a preferred embodiment, the rotational movement of the rewind lever acts as an on / off switch of the cassette module, the image from the image sensor array is read out and processed by the processing unit, and the digital image derived from the image read out from the image sensor array and processed by the processing unit is stored in a first memory connected to the processing unit for storing the digital image, and the rotational movement of the rewind lever deactivates the image sensor array of the image sensor module.

[0053] Preferably, the rotational movement of the rewind lever acts on the on / off switch of the cassette module, stopping any sounds indicating that the image detection process is ready, and after the image detection process ends, the digital image stored in the first memory connected to the readout circuit is transferred to the second memory of the cassette module. More preferably, the rotational movement of the rewind lever acts on the on / off switch of the cassette module, stopping any sounds indicating that the image detection process is ready, and after the image detection process ends, the digital image stored in the first memory connected to the readout circuit is transferred to the second memory of the cassette module, and a sound indicating that the digital image has been stored is emitted.

[0054] In another preferred embodiment, the rotational movement of the rewind lever in a specific direction acts on the on / off switch of the cassette module, deactivating the image sensor array of the image sensor module. The image measured by the image sensor array, acquired by pressing the shutter button of a film camera but not processed by the processing unit and stored in a first memory connected to the processing unit, is discarded. In a more preferred embodiment, the rotational movement of the rewind lever in the opposite direction to the direction of image discarding acts on the on / off switch of the cassette module. The processing unit reads and processes the image from the image sensor array, and the digital image derived from the image read from the image sensor array and processed by the processing unit is stored in a first memory connected to the processing unit for storing digital images. The rotational movement of the rewind lever deactivates the image sensor array of the image sensor module.

[0055] In another preferred embodiment, the rotational movement of the rewind lever in a specific direction acts on the on / off switch of the cassette module, deactivating the image sensor array of the image sensor module. The image measured by the image sensor array, acquired by pressing the shutter button of a film camera but not processed by the processing unit and stored in a first memory connected to the processing unit, is discarded. Any sounds indicating the image detection process is ready are stopped, and a sound indicating that no digital image has been stored is emitted. In a more preferred embodiment, the rotation of the rewind lever in the opposite direction to the direction of image discarding acts on the on / off switch of the cassette module. The processing unit reads out and processes the image from the image sensor array, storing the digital image derived from the image read from the image sensor array and processed by the processing unit in a first memory connected to the processing unit for storing digital images. The rotational movement of the rewind lever deactivates the image sensor array of the image sensor module and stops any sounds indicating the image detection process is ready. After the image detection process ends, the digital image stored in the first memory connected to the readout circuit is transferred to the second memory of the cassette module, and a sound indicating that a digital image has been stored is emitted. The rotation of the rewind lever along a specific direction for discarding the image can be clockwise or counterclockwise. Preferably, the user can select the direction for discarding or storing the image by changing the corresponding data in the cassette module.

[0056] Furthermore, a different sound can be provided to indicate that no digital images are stored compared to a sound indicating that digital images are stored. Additionally, a different sound can be provided to indicate that an activation mode or image detection process is ready compared to a sound indicating that digital images are stored and / or that no digital images are stored.

[0057] In a preferred embodiment, the clockwise rotation of the rewind lever acts on the on / off switch of the cassette module, activating the image sensor array of the image sensor module and setting a first specified time period. After the first specified time period, the image sensor array of the image sensor module is deactivated.

[0058] Alternatively, the following can be provided: the counterclockwise rotation of the rewind lever acts on the on / off switch of the cassette module, activating the image sensor array of the image sensor module, and setting a second specified time period, after which the image sensor array of the image sensor module is deactivated.

[0059] Preferably, a sound indicating that the image detection process is ready is emitted after the rotation of the rewind lever, and the sound output in response to clockwise movement is different from the sound output in response to counterclockwise movement.

[0060] Furthermore, it can be provided that the downward movement of the rewind lever acts on the on / off switch of the cassette module and activates the digital imaging system for converting the film camera into a digital camera, particularly the sensor for detecting the movement of the film advance crank of the image sensor module.

[0061] Preferably, the upward movement of the rewind lever acts on the on / off switch of the cassette module and is used to deactivate the digital imaging system that converts the film camera to a digital camera, particularly for a sensor that detects the movement of the film advance crank of the image sensor module.

[0062] Furthermore, it can be provided that the on / off switch of the junction box module includes a neutral position, wherein the switch returns to the neutral position by elastic force after rotational movement, and the holding time of rotational movement is measured, and the action or operating mode triggered by the rotational movement of the on / off switch of the junction box module is selected according to the holding time of rotational movement.

[0063] Preferably, the on / off switch of the junction box module includes a neutral position, wherein the switch returns to the neutral position by elastic force after rotational movement, and the number of rotational movements is measured within a specified time period, and the action or operation mode triggered by the number of rotational movements of the on / off switch of the junction box module is selected according to the holding time of the rotational movement.

[0064] In another preferred embodiment, the on / off switch of the cassette module includes at least one button triggered by rotational movement. Preferably, the on / off switch of the cassette module includes two buttons triggered by rotational movement, one button being triggered in a clockwise direction and the other button being triggered in a counterclockwise direction. More preferably, the holding time of any button and / or the number of rotational movements trigger different actions or operating modes.

[0065] Preferably, the processing unit of the image sensor module determines the exposure time based on the detection of light measured by the image sensor array.

[0066] Furthermore, the data provided for setting the white balance can be selected, and the data includes light values ​​for "daylight", "cloudy", "shade", "dusk" and "fluorescence".

[0067] Furthermore, the data provided for setting the sharpness is selectable, and the data includes sharpness values ​​of "very fine", "fine", "normal", "smooth" and "very smooth".

[0068] Additionally, the data provided for setting the dynamic range may be optional, and the data may include dynamic range values ​​for "very high", "high", "normal", "low" and "very low".

[0069] Preferably, a film camera can be provided with a button that, when the forward crank is operated to tension the shutter curtain and after the first image is captured, inhibits the rotation of the take-up spool; pressing the button to inhibit the take-up spool, and after operating the forward crank, captures a second image. Preferably, the image sensor array of the image sensor module is deactivated after a specified time period, which is between 60s and 1200s, preferably between 120s and 600s.

[0070] Preferably, the image data stored in the first memory will be retained until the data is transferred to the second memory or discarded as described above. After the correct transfer to the second memory is completed, the first memory is preferably cleared.

[0071] Preferably, discarding image data includes clearing the first memory.

[0072] Another subject of the invention is a parts kit comprising a digital imaging system and a cassette base for converting a film camera into a digital camera, according to the invention.

[0073] In a preferred embodiment, the cassette base includes a display screen.

[0074] Furthermore, a charging device may be provided to enable the base of the dark box to include such a device.

[0075] Preferably, the cassette base includes buttons for operating the cassette module settings.

[0076] Furthermore, the cassette base may be provided to include a USB port or a wireless communication module, preferably a Bluetooth or WLAN module for transmitting images stored in the cassette module.

[0077] In addition, a printing system can be provided so that the cassette base includes a printing system for printing images stored in the cassette module.

[0078] More preferably, the kit includes a magnetic strip that can be fixed to the take-up shaft with adhesive. Attached Figure Description

[0079] Figure 1 This is a schematic front view of the film camera to be converted; Figure 2 It is based on Figure 1 Showing the rear view of the camera; Figure 3 This is a schematic rear perspective view of a digital imaging system for converting a film camera to a digital camera according to the present invention in a separated state; Figure 4 This is a schematic front perspective view of a digital imaging system for converting a film camera to a digital camera according to the present invention in a separated state; Figure 5 This is a schematic rear perspective view of a digital imaging system for converting a film camera to a digital camera according to the present invention in a separated state; Figure 6 This is a schematic side perspective view of a digital imaging system for converting a film camera to a digital camera according to the present invention in a separated state; Figure 7 This is a schematic perspective view of a kit including a digital imaging system for converting a film camera to a digital camera and a cassette base according to the present invention.

[0080] Explanation of reference numerals in the attached figures 10 film cameras 12-camera main body 14 lenses 16-lens group 18mm lens tube 20 shutter button 22 shutter speed dial 24 film forward crankshaft 26-winding rod 28 back cover 30 hinges 32 pressure plate 34 Dark Box Storage 36 rewind fork 38 spools 40 winding shaft 42 shutter speed curtain 44 shutter opening 48 Viewfinder 50 film dark box 52 Dark Boxes 54 spools 56 film 70 Digital Imaging System 72-channel module 74 Image Sensor Module 76 USB ports 78SD card slot 80 control elements 82 display screen Contact pins of the 84 image sensor module 86 tape 90 processing units 92 First Memory 94 Sensors used to detect the movement of the crankshaft in film advance 96 strip 98 coil 100 film take-up shaft 102 magnetic components 104 image sensor array 106 On / Off Switch Contact pins of the 108 dark box module 110 kit 112 Dark Box Base 114 cassette base cassette compartment Pins of the 116 junction box base 118 control elements of the junction box base Display screen with 120 dark box base Detailed Implementation

[0081] The present invention will now be described in more detail with reference to the accompanying drawings. The present invention may be preferably practiced within the scope of the claims, and is not limited to the drawings provided herein.

[0082] Therefore, the invention is described in more detail in the following figures, but these figures do not limit the scope of the invention or its claims.

[0083] In the accompanying drawings and the following description of exemplary embodiments of the invention explained with reference to the drawings, some of the same reference numerals are used to denote the same or similar parts in different exemplary embodiments as well as for different individual parts, in order to simplify the comparability and readability of the exemplary embodiments.

[0084] This disclosure can be better understood by reading the following detailed description in conjunction with the accompanying drawings. Further exemplary embodiments of the invention will be explained below with reference to seven illustrative drawings, but these drawings do not limit the invention in any way.

[0085] Figure 1This is a front view showing a film camera 10 that can be converted into a digital camera by a digital imaging system according to the present invention.

[0086] In the following description, as shown in the figure, an orthogonal coordinate system (XYZ) is defined. For ease of description, the positive (+) side of the Z direction is called the top side, the negative (-) side of the Z direction is called the bottom side, the positive (+) side of the Y direction is called the front side, and the negative (-) side of the Y direction is called the back side. Furthermore, the X direction is horizontal, and the Z direction is vertical. However, these references do not represent universal top-bottom, front-back, or vertical-horizontal relationships.

[0087] The film camera 10 is preferably a single-lens reflex camera, and preferably uses 35mm film. The film camera 10 includes a camera body 12, a lens 14 (lens group 16 and lens barrel 18), a shutter button 20, a shutter speed dial 22, a film advance crank 24, and a rewind lever 26 as its main components.

[0088] Figure 2 It shows Figure 1 The rear view of the film camera 10 shown. (Except for...) Figure 1 In addition to what is shown, Figure 2 The film camera 10 is also shown to preferably include a viewfinder 48 and a rear cover 28. For example... Figure 2 As shown, the film camera 10 includes a cartridge chamber 34, a rewinding fork 36, a take-upspool 38, a shutter curtain 42, and a shutter opening 44, all located inside the camera body 12. Figure 2 As shown, these components are visible when the back cover 28 is opened.

[0089] For ease of explanation, Figure 2 The film cassette 50 is also shown. In this specification, the cassette 52 is a generally cylindrical container capable of holding the film 56 in its wound state, and the combination of the cassette 52 and the film 56 constitutes the film cassette 50.

[0090] To clarify the function of the digital imaging system according to the present invention, the function of the film camera 10 will be described in more detail below. Note that the movement of the film advance crank 24 can be detected by a sensor provided in the image sensor module. Furthermore, the movement of the rewind lever 26 can be detected by an on / off switch provided in the image cassette module.

[0091] like Figure 1 and Figure 2As shown, the camera body 12 is part of the housing of the film camera 10. With the lens 14 attached thereto and the rear cover 28 closed, the camera body 12 is optically sealed to protect the film 56 from light exposure except when the film 56 is being exposed. The camera body 12 and the rear cover 28 together constitute the housing of the film camera 10.

[0092] Lens 14 includes lens group 16 and lens barrel 18. Multiple optical lenses in lens group 16 are held in positions optically defined by lens barrel 18, which is mounted on the front side of camera body 12 in the Y direction. The side with lens barrel 18 is the front of film camera 10. Lens barrel 18 includes an aperture adjustment mechanism for adjusting the aperture (f-stop) and a focal length adjustment mechanism for adjusting the focal length. Lens barrel 18 may also have zoom functionality, etc.

[0093] The shutter button 20 is used to open and close the shutter curtain 42. The shutter button 20 is located on the upper surface of the camera body 12, on the right side when viewed from the back of the film camera 10 (see [link]). Figure 2 When the shutter button 20 is pressed, the shutter curtain 42 will move at the shutter speed set by the shutter speed dial 22. The exposure time of the film 56 is determined by the shutter speed.

[0094] The shutter speed dial 22 is located on the upper surface of the camera body 12, near the shutter button 20. Rotating the shutter speed dial 22 sets the shutter speed to the desired speed.

[0095] The film advance crank 24 is an example of a film winding operation portion for winding film. The film advance crank 24 is located on the upper surface of the camera body 12, next to the shutter speed dial 22, and is connected to the take-up spool 38. Each time the film advance crank 24 is turned up, the film 56 wound on the take-up spool 38 is wound up in an amount equivalent to one frame.

[0096] The rewind lever 26 is an example of an operating part that is operated from outside the camera body 12. The rewind lever 26 is located on the upper surface of the camera body 12, on the left side when the film camera 10 is viewed from the rear (see [link]). Figure 2 The rewind lever 26 is connected to the rewind fork 36 inside the dark box compartment 34.

[0097] When the rewind lever 26 is pulled up, the rewind fork 36 is inside the dark box compartment 34 (from...). Figure 2 The state shown is raised, and the dark box compartment 34 is ready to accommodate the dark box 52.

[0098] When the film is taken by the film camera 10, the rewind lever 26 is rewound, and the rewind fork 36 winds the film 56 from the take-up spool 38 into the cassette 52.

[0099] Viewfinder 48 is located on the rear side of camera body 12 (see...) Figure 2 Above the center. Shutter opening 44 is used to confirm the subject through lens 14. Rear cover 28 is configured to open and close substantially completely at the rear of camera body 12 (see above). Figure 2 The rear cover 28 is hinged to the camera body 12 via a hinge 30. A pressure plate 32 is provided on the inner surface of the rear cover 28 (the surface on the positive side in the Y direction when the rear cover 28 is closed). The pressure plate 32 presses the film 56 in front of the shutter opening 44.

[0100] Depending on the thickness of the image sensor module of the digital imaging system, the pressure plate 32 can be adjusted or removed. In another embodiment of the invention, the image sensor module of the digital imaging system can be attached to the back cover 28 or the adjusted pressure plate 32 by, for example, an adhesive, preferably a pressure-sensitive adhesive.

[0101] although Figure 2 The film cassette 50 is not inserted into the film camera 10, but by opening the rear cover 28, the film cassette 50 or the digital imaging system of the present invention can be inserted into or removed from the film camera 10. Figure 2 As shown, when the rear cover 28 is opened, the rear sides of the cassette compartment 34, rewind fork 36, film take-up shaft 38, shutter curtain 42, and shutter opening 44 are all opened.

[0102] The cartridge compartment 34 is a space for accommodating the cartridge 52, and the lower end of the retractor fork 36 protrudes downwards from the top into the cartridge compartment 34. The cartridge 52 is inserted into the cartridge compartment 34 with the retractor lever 26 pulled upwards, and the retractor fork 36 is pulled up within the cartridge compartment 34 (from...). Figure 2 (As shown in the diagram). In this state, when the rewind lever 26 is pushed down, the rewind fork 36 inserts into the groove of the spool 54 of the cassette 52. Similarly, a digital imaging system including an image sensor module and a cassette module can also be fitted into the film camera 10.

[0103] The rewind fork 36 is an example of a movable part, which is linked to the movement of the rewind lever 26 (a predetermined operating part) operated from outside the camera body 12. The rewind fork 36 is connected to the rewind lever 26 through a through hole on the upper surface of the camera body 12.

[0104] The rewind fork 36 is rotatable about the Z-axis and can move in the Z-axis direction according to the operation of the rewind lever 26. After the film camera 10 has finished shooting with the film 56, the rewind fork 36 rotates as the film 56 is rewinding in the cassette 52.

[0105] The take-up spool 38 is connected to the film advance crank 24 through a through hole on the upper surface of the camera body 12. The winding shaft 40 of the take-up spool 38 is a rod-shaped portion for winding the film 56 and has a slit into which the front end (leader portion) of the film 56 wound in the cassette 52 can be inserted.

[0106] When the film 56 is pulled out from the cassette 52, which is loaded into the cassette compartment 34, and the front end (guide portion) of the film 56 is inserted into the slit of the take-up spool 38, the film 56 moves to a position overlapping with the shutter curtain 42. With the front end (guide portion) of the film 56 inserted into the slit of the take-up spool 38, the film advance crank 24 is wound up, and the film 56 is wound one frame at a time via the take-up spool 38. The shutter curtain 42 is an example of a mechanical shutter and is located behind the shutter opening 44 (negative side in the Y direction). When the rear cover 28 is open, the shutter opening 44 is approximately located at the lateral center of the camera body 12.

[0107] The shutter curtain 42 is, for example, a focal plane shutter, and the shutter curtain 42 moves laterally relative to the shutter opening 44 via the shutter mechanism.

[0108] The closed state of the shutter curtain 42 is when the shutter curtain 42 blocks the shutter opening 44. The open state of the shutter curtain 42 is when the shutter curtain 42 moves laterally relative to the shutter opening 44, and the shutter opening 44 does not overlap with the shutter curtain 42. The shutter curtain 42 is opened and closed by moving laterally driven by the shutter mechanism.

[0109] Shutter opening 44 is located behind lens 14 (negative side in the Y direction) (see Figure 1 Since the film 56 is located behind the shutter curtain 42 (negative side in the Y direction), when the shutter curtain 42 is open, the film 56 is exposed by light entering through the lens 14 and the shutter opening 44.

[0110] The time that the shutter curtain 42 remains open (opening time) is the exposure time. Since the exposure time is determined by the shutter speed, the opening time of the shutter curtain 42 is set by the shutter speed dial 22.

[0111] It should be noted that although a film camera 10 with manual shutter speed, aperture (f-stop) and focal length adjustment will be described, aspects of this disclosure are applicable to film cameras where some or all of these adjustments are automated.

[0112] Figure 3 A schematic rear perspective view of a digital imaging system 70 for converting a film camera to a digital camera according to the present invention is shown in a separated state. Figure 3The rear of the digital imaging system 70 is shown facing... Figure 2 The cover of the film camera shown. The digital imaging system 70 includes a cassette module 72 and an image sensor module 74.

[0113] The cassette module 72 includes a second memory, an on / off switch, a battery (not shown), and a USB port 76 for charging the battery. The shape of the cassette module 72 is preferably the same as described above. Figure 2 The shapes of the traditional dark boxes shown are basically the same, allowing the dark box module 72 to be installed as follows: Figure 1 and Figure 2 The image shows the darkroom compartment of a film camera.

[0114] The USB port 76 for charging the battery is located on the cassette component, which is shaped like a reel (shaft). However, the USB port 76 can also be located on any other component of the cassette module 72.

[0115] The cassette module 72 preferably includes an SD card slot 78. The SD card is a practical second memory connected to the first memory via contact pins for long-term storage of digital images derived from images read from the image sensor array. Furthermore, the second memory, connected to the first memory via contact pins for long-term storage of digital images derived from images read from the image sensor array, can be fixed within the cassette module 72.

[0116] Additionally, the cassette module 72 includes a control element 80 (e.g., a small button) and a display screen 82, preferably an OLED or LCD display screen. The control element 80 can be used to adjust the ISO value, adjust or select the activation time of the image sensor array of the image sensor module, select film simulation of the digital image, select a sharpness value, select a dynamic range value, adjust white balance, etc. The display screen 82 preferably displays the provided optional or adjustable data.

[0117] The dark box module 72 and the image sensor module 74 can be separated and connected to each other via contact pin 84. Figure 3 The contact pins of the cassette module 72 are not shown. The contact pins 84 of the image sensor module 74 are disposed on the strap 86. The strap 86 can adjust the length between the cassette and the sensor module to accommodate different types of film cameras. Preferably, the strap 86 can slide into the image sensor module or the cassette module, such as... Figure 3 As shown.

[0118] Furthermore, the image sensor module 74 includes a processing unit 90 connected to the image sensor array for reading images from the image sensor array, and a first memory 92 connected to the processing unit for storing digital images derived from the images read from the image sensor array and processed by the processing unit.

[0119] The image sensor module 74 includes a sensor 94 for detecting the movement of the film advance crank. For example... Figure 3 As shown, the sensor 94 for detecting the movement of the film advance crank includes a positionable ... Figure 2 The film camera shown has a strip 96 near the internal take-up spool 100. This strip 96 includes a coil 98 for measuring changes in the magnetic field caused by the rotational movement of a magnetic element 102 (preferably a magnetic strip), which is attached to the take-up spool 100 by adhesive, preferably to the winding shaft of the take-up spool 100. The take-up spool 100 with the magnetic element 102 is shown for illustrative purposes.

[0120] Figure 4 A digital imaging system 70 for converting a film camera to a digital camera, as shown in the present invention, is also illustrated. Figure 3 The diagram shows a schematic frontal perspective view in the separated state. Figure 4 The front view of the digital imaging system 70 is shown. Figure 2 The shutter of the film camera is shown. The digital imaging system 70 includes a cassette module 72 and an image sensor module 74.

[0121] The cassette module 72 includes a second memory, an on / off switch, contact pins, a battery (not shown), and a USB port 76 for charging the battery. The shape of the cassette module 72 is preferably the same as described above. Figure 2 The shapes of the traditional dark boxes shown are basically the same, so that the dark box module 72 can be assembled into such a way as Figure 1 and Figure 2 The image shows the darkroom compartment of a film camera.

[0122] The cassette module 72 and the image sensor module 74 can be separated and connected to each other via contact pins 84. The contact pins 84 of the image sensor module 74 are magnetically attached to the contact pins of the cassette module 72 and are disposed on the strip 86, as shown in more detail above.

[0123] The image sensor module 74 includes an image sensor array 104. Image data measured using the image sensor array 104 is processed by a processing unit coupled to the image sensor array to read images from the image sensor array, and by a first digital image memory coupled to the processing unit to store the images read from the image sensor array.

[0124] Furthermore, the image sensor module 74 includes a sensor 94 for detecting the movement of the film advance crank. The sensor 94 includes features that can be positioned such as... Figure 2 The strip 96 is located near the internal take-up shaft 100 of the film camera shown.

[0125] Figure 5 It is based on Figure 3 and Figure 4 The diagram shows a schematic rear perspective view of the digital imaging system 70 in its separated state. The rear of the digital imaging system 70 is shown, making the surface facing the top of the film camera visible. The digital imaging system 70 includes a cassette module 72 and an image sensor module 74.

[0126] The dark box module 72 includes a second memory, a USB port for charging the battery, a battery (not shown), and an on / off switch 106.

[0127] The cassette module 72 preferably includes an SD card slot 78, a control element 80 (e.g., a small button), and a display screen 82, preferably an OLED or LCD display screen. The cassette module 72 and the image sensor module 74 are separable from and connected to each other via contact pins. The contact pins 84 of the image sensor module are disposed on a strip 86.

[0128] Furthermore, the image sensor module 74 includes a processing unit 90 connected to the image sensor array for reading images from the image sensor array, and a first memory 92 connected to the processing unit for storing digital images derived from the images read from the image sensor array and processed by the processing unit.

[0129] The image sensor module 74 includes a sensor 94 for detecting the movement of the film advance crank. The sensor 94 includes a strip 96 with a coil 98, which is described in detail above.

[0130] For ease of illustration, a film take-up shaft 100 of a film camera with a magnetic element 102, preferably a magnetic strip attached by an adhesive, is also shown.

[0131] Figure 6 A digital imaging system 70 for converting a film camera to a digital camera according to the present invention is shown. Figure 3 , Figure 4 and Figure 5 A schematic side perspective view of the separated state.

[0132] Figure 6 As shown Figure 2 The side view of the digital imaging system 70 facing the bottom of the film camera is shown. The digital imaging system 70 includes a cassette module 72 and an image sensor module 74.

[0133] A USB port 76 for charging the battery is located in the reel-shaped cartridge section. It can be interconnected via contact pins 84 and 108. Contact pins 108 of the cartridge module 72 and contact pins 84 of the image sensor module 74 allow for the separation of the cartridge module 72 and the image sensor module 74. A strap 86 providing the contact pins 84 of the image sensor module 74 allows for adjustment of the length between the cartridge and the sensor module for mounting to different types of film cameras.

[0134] Other components of the image sensor module 74, such as the sensor 94 including the strip 96, have been described in more detail above.

[0135] Figure 7 This is a schematic perspective view of a kit 110 including a digital imaging system 70 for converting film cameras to digital cameras and a cartridge dock 112. (The above is a partial translation of the original text.) Figures 3 to 6 The digital imaging system 70 is described in more detail.

[0136] The junction box base 112 includes a junction box compartment 114 into which the junction box module 72 can be assembled. Data transmission between the junction box base 112 and the junction box module 72 is achieved through pins 116 of the junction box base 112 and pins of the junction box module 72. Figure 7 (The pins of the cassette module 72 are not shown in the diagram.) Data from the cassette module 72, including, for example, ISO values, activation time of the image sensor array of the image sensor module, film simulation of the digital image, sharpness values, dynamic range values, and white balance, can be adjusted via the control element 118 of the cassette base. Data stored in the memory (second memory) of the cassette module 72 can be read and displayed on the display screen 120 of the cassette base.

Claims

1. A digital imaging system for converting a film camera to a digital camera, the digital imaging system comprising an image sensor module and a darkroom module, wherein, The image sensor module and the dark box module can be separated and connected to each other via contact pins; The image sensor module includes an image sensor array, a processing unit coupled to the image sensor array for reading images from the image sensor array, a first memory coupled to the processing unit for storing digital images derived from images read from the image sensor array and processed by the processing unit, and a sensor for detecting the movement of the film advance crank. The dark box module includes: a second memory connected to the first memory via the contact pin for long-term storage of digital images derived from images read from the image sensor array; an on / off switch operable by the rewind lever of a film camera; and a battery and a USB port for charging the battery. The digital imaging system includes a sound output unit.

2. The digital imaging system according to claim 1, wherein, The image sensor module and the dark box module are fixed together by magnetic force.

3. The digital imaging system according to claim 1, wherein, The sensor for detecting the movement of the film advance crank includes a strip for measuring the rotational movement of the internal take-up shaft of the film camera, and the strip includes a coil for measuring changes in the magnetic field, and the take-up shaft of the film camera includes a magnetic element, preferably a magnetic strip fixed to the take-up shaft by an adhesive.

4. The digital imaging system according to claim 1, wherein, The image sensor module includes a retaining magnet for fixing the sensor module to the body of the film camera, preferably to the back of the shutter.

5. The digital imaging system according to claim 1, wherein, The contact pins of one of the image sensor module and the dark box module are disposed on the strip, preferably the contact pins of the image sensor module are disposed on the strip.

6. The digital imaging system according to claim 1, wherein, The cassette module includes data for adjusting ISO values; and / or The image sensor module includes data for adjusting the ISO value.

7. The digital imaging system according to claim 1, wherein, The dark box module includes data on the activation time of the image sensing array of the image sensor module; and / or The image sensor module includes data on the activation time of the image sensor array of the image sensor module.

8. The digital imaging system according to claim 1, wherein, The on / off switch of the junction box module includes a neutral position, and the switch returns to the neutral position after rotation.

9. The digital imaging system according to claim 1, wherein, The on / off switch of the dark box module includes at least two, preferably at least three, rotational positions that define at least two, preferably at least three, operating modes.

10. The digital imaging system according to claim 1, wherein, The on / off switch of the dark box module includes a sensor for determining up / down movement.

11. A method for capturing digital images with a film camera, the method utilizing the digital imaging system according to claim 1.

12. The method according to claim 11, wherein, The rotational motion of the film advance crank activates the image sensor array of the image sensor module.

13. The method according to claim 11, wherein, Operating the film advance crank of the film camera indicates the end of the image detection process. The image from the image sensor array is read out and processed by the processing unit. The digital image derived from the image read out from the image sensor array and processed by the processing unit is stored in a first memory connected to the processing unit for storing digital images. The image sensor array of the image sensor module is reactivated to acquire another image, and a sound indicating that the image detection process is ready is emitted again.

14. The method according to claim 11, wherein, After a specified period of time, the image sensing array of the image sensor module is deactivated.

15. A parts kit comprising a digital imaging system for converting a film camera to a digital camera and a cassette base as claimed in claim 1.

Images