Shutter assembly and slit-type large-format scanning camera

Abstract

The invention relates to the technical field of optical devices, in particular to a shutter assembly and a slit type large-format scanning camera, the shutter assembly comprises a film box, a slit scanning mechanism and a linear driving mechanism, and a photosensitive component is arranged in the film box; the gap scanning mechanism comprises a bearing part and a rigid insertion sheet; the bearing part is in guide fit with the film box; the rigid insertion sheet is inserted into the film box, two ends of the rigid insertion sheet are fixed on the bearing component, and a gap is formed in the rigid insertion sheet; the linear driving mechanism comprises a supporting part, a driving part and a transmission part, and the driving part is arranged on the supporting part; the transmission part is arranged on the supporting part and is in transmission fit with the driving part, and the transmission part is connected with the bearing part. According to the invention, the driving part and the transmission part in the linear driving mechanism are matched to realize rapid and slow linear motion of the bearing part so as to drive the rigid insertion sheet to stably scan the photosensitive part, so that the light is ensured to irradiate on the photosensitive part in an accurate slit form, and a high-quality and high-resolution imaging effect can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of optical devices, and in particular to a shutter assembly and a slit-type large-format scanning camera. Background Art

[0002] A slit shutter primarily refers to a focal plane shutter, a type of mechanical shutter. It consists of a front curtain and a rear curtain, typically made of metal or other durable materials. These curtains move sequentially during exposure, controlling the entry and exit of light. The slit shutter includes a drive component and a transmission mechanism, which transmits power to the shutter curtains through the transmission mechanism, driving their movement.

[0003] In the related art, the driving components and transmission devices used in the slit shutter have poor stability and complex structural settings. For fast-moving scenes, it is impossible to freeze the moment clearly, and the imaging resolution and quality are poor. Summary of the Invention

[0004] The present invention provides a shutter assembly and a slit-type large-format scanning camera to address the above-mentioned technical defects in the prior art. The fast and slow linear motion of the carrying component are achieved through the cooperation of the driving member and the transmission member in the linear drive mechanism, so as to drive the rigid insert to stably scan the photosensitive component, ensuring that light is irradiated onto the photosensitive component in the form of an accurate slit, thereby obtaining high-quality, high-resolution imaging effects.

[0005] A first aspect of the present invention provides a shutter assembly, comprising: A film box having a photosensitive component disposed therein; The gap scanning mechanism comprises: A bearing component, cooperating with the film box guide; A rigid insert is inserted into the film box, with both ends fixed to the bearing component, and a gap is provided on the rigid insert; Linear drive mechanism, including: Support components; a driving member, provided on the supporting member; The transmission component is provided on the supporting component and cooperates with the driving member. The transmission component is connected to the bearing component and is used to drive the bearing component to move in a straight line, thereby driving the rigid insert to move in position to scan the photosensitive component in the form of a slit.

[0006] According to the shutter assembly provided by the present invention, the rigid insert includes a first insert portion and a second insert portion that are symmetrically arranged; The gap is provided between the first inserting piece portion and the second inserting piece portion; The bearing components are respectively clamped on the first inserting piece portion and the second inserting piece portion.

[0007] According to the shutter assembly provided by the present invention, the bearing component includes: A bearing body, matched with the film box guide and connected to the transmission component; Two clamping mechanisms are symmetrically arranged at positions close to both ends of the carrying body, wherein one of the clamping mechanisms is used to clamp the first inserting piece, and the other clamping mechanism is used to clamp the second inserting piece.

[0008] According to the shutter assembly provided by the present invention, each of the clamping mechanisms includes: A support member, clamped on the carrying body and fixedly connected to the carrying body; a clamping member, hinged to the support member and adapted to cooperate with the support member to clamp the corresponding rigid insert portion; The locking component is hinged to the support component and cooperates with the support component to lock the clamping component.

[0009] According to the shutter assembly provided by the present invention, the locking component includes: A connecting body, one end of which is hinged to the support member; The locking body is hinged to the other end of the connecting body, the hinge center of the locking body is eccentrically arranged relative to the center of the locking body, and the locking body is suitable for rotating to lock the support member.

[0010] According to the shutter assembly provided by the present invention, the support member includes: A first supporting portion, clamped on the carrying body and fixedly connected to the carrying body; a second supporting portion, disposed perpendicularly to the first supporting portion, and forming an arc transition section at a connection with the first supporting portion; Wherein, the clamping member and the locking member are both connected to the second supporting portion.

[0011] According to the shutter assembly provided by the present invention, the transmission component includes: a ball screw rotatably mounted on the support member, the ball screw being in driving engagement with an output shaft of the driving member; Two guide members are oppositely arranged on both sides of the support component, the two guide members are located on both sides of the ball screw, and the guide members are arranged parallel to the ball screw; At least two sliders are respectively embedded between the two oppositely arranged guide members, each slider being in driving engagement with the ball screw and in sliding engagement with the guide member; Wherein, the bearing component is fixedly connected to each of the sliders.

[0012] According to the shutter assembly provided by the present invention, the transmission component further includes: a height compensation member, fixedly connected to each of the sliders; Wherein, the bearing component is clamped on the height compensation component and fixedly connected to the slider through the height compensation component.

[0013] According to the shutter assembly provided by the present invention, the transmission component further includes: The detection component comprises a detection element and a trigger element, wherein the trigger element is arranged on the slider, and the detection element is arranged on the guide member and is located on the movement path of the trigger element.

[0014] A second aspect of the present invention provides a slit-type large-format scanning camera, comprising: fuselage structure; A lens module is provided on the body structure; And the shutter assembly described in any of the above items, wherein the shutter assembly is arranged on the body structure and located in front of the lens module.

[0015] The shutter assembly provided by the present invention realizes fast and slow linear movement of the carrying component through the cooperation of the driving part and the transmission part in the linear drive mechanism, so as to drive the rigid insert to stably scan the photosensitive component, ensuring that the light is irradiated onto the photosensitive component in the form of an accurate slit, thereby obtaining high-quality and high-resolution imaging effects.

[0016] Since the linear drive mechanism adopts a servo motor and ball screw structure, the precise control characteristics of the servo motor and the stable transmission performance of the ball screw ensure that the shutter assembly can work accurately according to the preset parameters during each shooting, thereby improving the stability of shooting and making the quality of the photos taken more stable and reliable. The precise control characteristics of the servo motor and the stable transmission performance of the ball screw ensure that the shutter assembly can work accurately according to the preset parameters during each shooting, thereby improving the stability of shooting and making the quality of the photos taken more stable and reliable.

[0017] Furthermore, the film cassette, slit scanning mechanism, and linear drive mechanism are efficiently arranged within a limited space. This allows the imaging device (camera) to maintain a compact size while maintaining a high-performance shutter function, facilitating miniaturization and portability, making it easier for users to carry and use. The rigid insert in the slit scanning mechanism is a thin metal sheet clamped to the carrier component, occupying less space than traditional shutter structures, further optimizing the space utilization of the shutter assembly.

[0018] Furthermore, the slit-type large-format scanning camera provided by the present invention includes the above-mentioned shutter assembly and thus has all the advantages of the above-mentioned shutter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a shutter assembly provided by an embodiment of the present invention.

[0021] Figure 2 It is a structural schematic diagram of one side of the film box in the shutter assembly provided by an embodiment of the present invention.

[0022] Figure 3 It is a schematic structural diagram of the other side of the film box in the shutter assembly provided by an embodiment of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention.

[0024] Figure 5 It is a partial structural diagram of the slit scanning mechanism in the shutter assembly provided by an embodiment of the present invention.

[0025] Figure 6 yes Figure 5 The front view of the clamping mechanism in the gap scanning mechanism shown.

[0026] Figure 7 yes Figure 5 One of the schematic diagrams showing the usage status of the clamping mechanism in the gap scanning mechanism shown.

[0027] Figure 8 yes Figure 5 The second schematic diagram of the usage status of the clamping mechanism in the gap scanning mechanism shown.

[0028] Figure 9 yes Figure 5 The third schematic diagram of the usage status of the clamping mechanism in the gap scanning mechanism shown.

[0029] Figure 10 yes Figure 5 The main view of the carrier body in the gap scanning mechanism shown.

[0030] Figure 11 It is a schematic structural diagram of a height compensation component in a shutter assembly provided by an embodiment of the present invention.

[0031] Figure 12 It is a structural schematic diagram of a film box in a shutter assembly provided by an embodiment of the present invention.

[0032] Figure 13It is a schematic diagram of the partial structure of the film box in the shutter assembly provided by an embodiment of the present invention.

[0033] Figure 14 It is a schematic diagram of the partial structure of the film box in the shutter assembly provided by an embodiment of the present invention.

[0034] Figure 15 It is a schematic diagram of the film box seal in the shutter assembly provided by an embodiment of the present invention.

[0035] Figure 16 This is a stress test model diagram of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention (the chromatogram is the corresponding stress value, and the value below the chromatogram is the maximum yield value).

[0036] Figure 17 This is a diagram of the tensile and compressive stress test model of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention (the light-colored area is under tension and the dark-colored area is under compression).

[0037] Figure 18 This is a strength verification model diagram (relative displacement value) of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention.

[0038] Figure 19 This is a strength verification model diagram of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention (relative displacement value under a load of 0.57 kg).

[0039] Figure 20 This is a stress test model diagram of the rigid insert in the shutter assembly provided by an embodiment of the present invention (the color spectrum represents the corresponding stress value).

[0040] Figure 21 This is a diagram of the tensile and compressive stress test model of the rigid insert in the shutter assembly provided by an embodiment of the present invention (the upper and lower parts are tensile areas, and the middle part is a compression area).

[0041] Figure 22 This is a strength verification model diagram (relative displacement value) of the rigid insert in the shutter assembly provided by an embodiment of the present invention.

[0042] Figure 23 This is a diagram of a stress test model of a support member in a shutter assembly provided by an embodiment of the present invention.

[0043] Figure 24 This is a displacement test diagram of a support member in a shutter assembly provided by an embodiment of the present invention.

[0044] Reference numerals: 10. Film box; 11. Photosensitive component; 12. Sealing plate; 121. Slide; 20. Slit scanning mechanism; 21. Carrying member; 211. Carrying body; 2111. Card slot; 212. Clamping mechanism; 2121. Support member; 2121-1. First supporting portion; 2121-2. Second supporting portion; 2122. Clamping member; 2123. Connecting body; 2124. Locking body; 2125. Buffer pad; 22. Rigid insert; 221. Slit; 222. First insert portion; 223. Second insert portion; 30. Linear drive mechanism; 31. Support component; 32. Driving component; 33. Transmission component; 331. Ball screw; 332. Guide component; 333. Slider; 334. Height compensation component; 34. Detection component; 341. Detection element; 342. Trigger element. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0046] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0047] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0049] Figure 1 It is a structural schematic diagram of a shutter assembly provided by an embodiment of the present invention. Figure 2 It is a structural schematic diagram of one side of the film box in the shutter assembly provided by an embodiment of the present invention. Figure 3 It is a schematic structural diagram of the other side of the film box in the shutter assembly provided by an embodiment of the present invention. Figure 4 It is a structural schematic diagram of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention.

[0050] See Figures 1 to 4 An embodiment of the present invention provides a shutter assembly, which includes a film box 10, a slit scanning mechanism 20 and a linear driving mechanism 30.

[0051] Film box 10, as the basic framework of whole shutter assembly, can adopt high-strength, lightweight aluminum alloy material to make. Inside film box 10, be provided with photosensitive component 11, photosensitive component 11 can be image sensor or film, and film is preferably silver salt clip.

[0052] The gap scanning mechanism 20 includes a bearing component 21 and a rigid insert 22. The bearing component 21 can be made of aluminum alloy. The bearing component 21 is guided and matched with the film box 10, that is, a special guide rail and slot can be set on the film box 10 for guiding and matching with the gap scanning mechanism 20.

[0053] A rigid insert 22 is movably inserted into the film cartridge 10. Its ends are clamped to the support member 21, and a slit 221 is defined near the center of the rigid insert 22. The width and length of the slit 221 are tailored to the dimensions of the photosensitive member 11 and the scanning requirements. For example, the width of the slit 221 can be between 0.1 and 1 mm. High-precision laser cutting or electro-discharge machining (EDM) techniques are used to ensure the accuracy of the slit 221.

[0054] The rigid insert 22 is made of a thin metal sheet, such as spring steel or stainless steel. Since the light shield provided with the film cassette 10 is a 0.76mm thick plastic sheet, its strength meets the requirements for use in a small size (166mm x 106mm). However, the rigid insert 22 provided by the present invention has dimensions of 450mm x 106mm x 0.7mm, a slit scanning stroke of 190mm, and a slit of 102mm x 0.5mm in the width direction. This further weakens the rigidity of the rigid insert 22, and therefore, flexible materials such as plastic cannot be used for the rigid insert 22.

[0055] It should be noted that a black light-absorbing coating, such as a carbon black coating, may be coated on the surface of the rigid insert 22 to improve the light absorption capability and reduce the interference of reflected light on the photosensitive component 11 .

[0056] The linear drive mechanism 30 includes a support component 31, a driver 32, and a transmission component 33. The support component 31 can be a frame structure made of a high-strength metal material such as steel or titanium alloy. The frame design must ensure sufficient rigidity to withstand the operating pressure of the driver 32 and transmission component 33. The driver 32 is mounted on the support component 31 and can be a servo motor. The movement of a servo motor is more precise than that of a stepper motor. The servo motor uses an encoder to ensure accuracy. Even ordinary servo motors can achieve a pulse equivalent (similar to the step angle) of 0.045°, that is, one uniform rotation is 8000 steps, which can meet the shooting requirements of the slit-type large-format scanning camera provided by the present invention.

[0057] If higher precision is required, a 17-bit encoder can be selected, whose pulse equivalent is 0.0027466°, that is, one rotation at a constant speed is 131072 steps, which can make the captured image more detailed.

[0058] The transmission component 33 is mounted on the support member 31 and can utilize a high-precision ball screw structure. The ball screw structure comprises a ball screw 331 and a slider 333. The ball screw 331 is connected to the output shaft of the driver 32, and the slider 333 is connected to the carrier 21. The transmission component 33, in conjunction with the driver 32 and connected to the carrier 21, drives the carrier 21 in linear motion, thereby moving the rigid insert 22 to scan the photosensitive member 11 in a slit-like manner.

[0059] When the shutter assembly is activated, the driving member 32 of the linear drive mechanism 30 is in its initial position. At this point, the supporting member 21 is in its starting position, and the gap 221 of the rigid insert 22 is in its initial relative position to the photosensitive member 11. It is possible that the gap 221 is completely outside the effective scanning area of the photosensitive member 11.

[0060] The control system issues a command to the driver 32 of the linear drive mechanism 30, which begins operating and drives the carrier 21 through the transmission member 33 to begin linear motion. The movement of the carrier 21 drives the rigid insert 22 toward the photosensitive member 11 until the gap 221 approaches the edge of the effective scanning area of the photosensitive member 11.

[0061] As the driver 32 continues to operate, the carrier 21 drives the rigid insert 22 to continue moving at a steady speed. The slit 221 in the rigid insert 22 gradually sweeps across the active area of the photosensitive component 11 in the form of a slit. During this process, the photosensitive component 11 begins to receive light signals passing through the slit 221. The linear drive mechanism 30 precisely controls the movement of the carrier 21 based on preset scanning speed and scanning range parameters. For example, if a full scan of the photosensitive component 11 is required, the driver 32 continues operating until the slit 221 in the rigid insert 22 completely leaves the active area of the photosensitive component 11.

[0062] When the gap 221 of the rigid insert 22 completely leaves the effective area of the photosensitive component 11, the driving member 32 of the linear drive mechanism 30 stops working. The bearing component 21 stops moving, and the shutter assembly completes a scanning process and waits for the next scanning instruction or enters the shutdown state.

[0063] It can be understood that the shutter assembly provided in the embodiment of the present invention realizes the rapid linear movement of the supporting component 21 through the cooperation of the driving member 32 and the transmission component 33 in the linear drive mechanism 30, so as to drive the rigid insert 22 to stably scan the photosensitive component 11, ensuring that the light is irradiated onto the photosensitive component 11 in the form of an accurate slit, thereby obtaining a high-quality, high-resolution imaging effect.

[0064] Since the linear drive mechanism 30 adopts a servo motor and a ball screw 331 structure, the precise control characteristics of the servo motor and the stable transmission performance of the ball screw 331 ensure that the shutter assembly can accurately operate according to the preset parameters during each shooting, thereby improving the stability of shooting and making the quality of the photos taken more stable and reliable. The precise control characteristics of the servo motor and the stable transmission performance of the ball screw 331 ensure that the shutter assembly can operate according to the preset parameters during each shooting, thereby improving the stability of shooting and making the quality of the photos taken more stable and reliable.

[0065] Furthermore, the film cassette 10, slit scanning mechanism 20, and linear drive mechanism 30 achieve an efficient layout within a limited space. This allows the imaging device (camera) to maintain a compact size while still providing a high-performance shutter function, facilitating miniaturization and portability, making it easier for users to carry and use. The rigid insert 22 in the slit scanning mechanism 20 is a thin metal sheet clamped onto the carrier member 21. Compared to traditional shutter structures, this takes up less space, further optimizing the space utilization of the shutter assembly.

[0066] Continue reading Figure 2 In some embodiments of the present invention, because the film cartridge 10 is not symmetrically positioned when inserted into the back, for ease of control, the slit scanning stroke is designed to be symmetrical with the centerline of the back exposure area, forcing the rigid insert 22 to extend the same distance at both ends. Therefore, the rigid insert 22 includes a symmetrically arranged first insert portion 222 and a second insert portion 223. This symmetrical structure allows the rigid insert 22 to more evenly distribute stress when subjected to force.

[0067] The bearing component 21 is respectively clamped on the first plug-in portion 222 and the second plug-in portion 223. The first plug-in portion 222 and the second plug-in portion 223 must leave a portion covered by the clamping mechanism. The entire structure forms a mutually supporting system. During the operation of the shutter assembly, if it is subjected to external vibration or impact force, the symmetrical structure can prevent the plug-in from twisting or deformation, thereby improving the overall rigidity of the rigid plug-in 22, thereby ensuring the shape and position accuracy of the gap 221 and ensuring the accuracy of the scanning process.

[0068] Compared to a single-sided clamping method for the rigid insert 22, the double-sided clamping method provides greater operational stability for the rigid insert 22. When the support member 21 moves linearly, it can more stably drive the rigid insert 22 to move, reducing the risk of loosening or detachment of the connection and improving the reliability of the shutter assembly during long-term operation.

[0069] The slit 221, located between the first insert portion 222 and the second insert portion 223, helps optimize the distribution of light passing through the slit 221 onto the photosensitive component 11. Due to the symmetrical structure, light passing through the slit 221 is more evenly distributed across the photosensitive component 11, reducing imaging errors caused by uneven lighting. For example, during scanning, image shadows or uneven brightness caused by light intensity on one side being stronger than the other can be avoided, thereby improving imaging quality.

[0070] Figure 5 It is a partial structural diagram of the slit scanning mechanism in the shutter assembly provided by an embodiment of the present invention.

[0071] See Figure 5In some embodiments of the present invention, the bearing component 21 includes a bearing body 211 and two clamping mechanisms 212. The bearing body 211 can adopt a rectangular metal structure, such as aluminum alloy, to ensure strength while reducing weight.

[0072] The carrier body 211 can be guided and engaged with the film cassette 10 by means of a sliding groove and a slider. A connection hole or a connection slot is provided at the top center of the carrier body 211 for securely connecting to the transmission component 33. This connection can be a bolt connection or an embedded connection between a slot and a protrusion to ensure that it will not loosen during transmission.

[0073] Two clamping mechanisms 212 are symmetrically positioned near the ends of the carrier body 211. One clamping mechanism 212 is used to clamp the first insert portion 222, and the other clamping mechanism 212 is used to clamp the second insert portion 223. Because the rigid insert 22 is weakened by the slit 221, the linear drive mechanism 30 must not apply thrust to the rigid insert 22 when it is driven to move. Otherwise, the connection between the upper and lower parts of the slit 221, as the weakest point, will deform first. Therefore, the provision of two clamping mechanisms 212 is necessary to ensure that the rigid insert 22 is subjected to tension during linear movement.

[0074] When the shutter assembly is not in operation, the two clamping mechanisms 212 clamp the first inserting portion 222 and the second inserting portion 223, and the carrier body 211 is located at the initial position of the film cartridge 10. At this time, the slit 221 of the rigid inserting portion 22 and the photosensitive component 11 are in an initial relative position, for example, the slit 221 is completely outside the effective scanning area of the photosensitive component 11.

[0075] When the shutter assembly starts working, the driving member 32 of the linear drive mechanism 30 starts to operate, and transmits power to the supporting body 211 through the transmission member 33. Driven by the transmission member 33, the supporting body 211 starts to move linearly along the guide structure of the film box 10.

[0076] Because the two clamping mechanisms 212 firmly clamp the first inserting portion 222 and the second inserting portion 223, when the carrier body 211 moves, the clamping mechanisms 212 drive the first inserting portion 222 and the second inserting portion 223 to move synchronously. As the carrier body 211 moves, the gap 221 of the rigid inserting portion 22 gradually approaches the effective scanning area of the photosensitive component 11.

[0077] As the carrier body 211 continues to move, the slit 221 of the rigid insert 22 sweeps across the active area of the photosensitive component 11 in the form of a slit. During this process, the photosensitive component 11 receives the light signal passing through the slit 221. The clamping mechanism 212 maintains a stable grip on the rigid insert 22 throughout the scanning process, ensuring the positional accuracy of the slit 221.

[0078] When the scan is complete, the drive member 32 of the linear drive mechanism 30 stops operating, and the carrier body 211 stops moving. At this point, the gap 221 of the rigid insert 22 completely leaves the effective area of the photosensitive component 11, and the two clamping mechanisms 212 still maintain the clamping state of the rigid insert 22, waiting for the next scan operation or shutdown command.

[0079] This arrangement, combined with the guiding cooperation between the carrier body 211 and the film cassette 10, and the two symmetrically positioned clamping mechanisms 212 at each end, makes the entire carrier 21 more stable during movement. Whether stationary or in high-speed linear motion, it effectively resists external interference such as vibration and impact, ensuring the positional accuracy of the rigid insert 22, thereby improving the overall stability of the shutter assembly.

[0080] Figure 6 yes Figure 5 The front view of the clamping mechanism in the gap scanning mechanism shown. Figure 7 yes Figure 5 One of the schematic diagrams showing the usage status of the clamping mechanism in the gap scanning mechanism shown. Figure 8 yes Figure 5 The second schematic diagram of the usage status of the clamping mechanism in the gap scanning mechanism shown. Figure 9 yes Figure 5 The third schematic diagram of the usage status of the clamping mechanism in the gap scanning mechanism shown.

[0081] See Figures 6 to 9 In some embodiments of the present invention, each clamping mechanism 212 includes a support member 2121 and a clamping member 2122. The support member 2121 can be designed as an "L"-shaped metal structure, for example, made of stainless steel. The support member 2121 has two support arms, one of which is snap-fitted to the supporting body 211.

[0082] Positioning pin holes are provided on the mating surface that engages with the carrier body 211. The positioning pins engage with corresponding pin holes on the carrier body 211 to achieve precise positioning. Bolts are then used to securely connect the support member 2121 to the carrier body 211. The other support arm of the support member 2121 is provided with a hinge hole for articulation with the clamping member 2122 and the locking component.

[0083] The clamping member 2122 is designed as a nearly arc-shaped metal plate made of hard aluminum alloy. The inner surface of the arc matches the outer contour of the rigid insert 22. The clamping member 2122 is hinged to the support member 2121 and is suitable for cooperating with the support member 2121 to clamp the corresponding rigid insert 22.

[0084] The locking member is hingedly connected to the support member 2121 and cooperates with the support member 2121 to lock the clamping member 2122. This design ensures that the clamping member 2122 maintains a stable grip on the rigid insert 22 during shutter assembly operation. Even during high-speed movement or under external vibrations or impacts, the rigid insert 22 will not shift, ensuring proper operation of the shutter assembly and improving scanning accuracy.

[0085] It should be noted that a rubber cushion 2125 is provided on the side of at least one of the clamping member 2122 and the supporting member 2121 facing the rigid insert 22. Furthermore, the position of the clamping member 2122 can be easily adjusted as needed, facilitating accurate placement and removal of the rigid insert 22 within the clamping mechanism 212, thereby improving assembly and maintenance efficiency.

[0086] Furthermore, the locking component comprises a connecting body 2123 and a locking body 2124. The connecting body 2123 is designed as a slender rod-shaped structure made of high-strength stainless steel. One end of the connecting body is provided with a circular hinge hole, and the area surrounding the hinge hole is locally thickened to enhance strength and prevent deformation or damage during frequent rotation. The other end of the connecting body 2123 is provided with a connecting groove for articulating with the locking body 2124.

[0087] Locking body 2124 is a block-shaped structure and can be manufactured from engineering plastics (such as polycarbonate) to reduce weight and cost. An eccentric hinge hole is located at the center of locking body 2124. The eccentricity of the hinge hole is designed to ensure sufficient displacement when locking body 2124 rotates, achieving an effective locking function.

[0088] Continue reading Figure 7 and Figure 8 When the shutter assembly is not in operation or when the rigid insert 22 needs to be installed or removed, the locking body 2124 is in the unlocked state. At this time, the locking body 2124 is away from the support member 2121, and the hinge axis between the connecting body 2123 and the locking body 2124 is in a free state, without applying any locking force.

[0089] Continue reading Figure 9 When locking the clamping member 2122, an external torque is applied to the locking body 2124, causing it to rotate about its hinge center with the connecting body 2123. Because the hinge center of the locking body 2124 is eccentric relative to its center, the locking body 2124 will experience an eccentric displacement during rotation. This forms a stable locking structure between the locking body 2124 and the support member 2121, locking the clamping member 2122 in a position that clamps the rigid insert 22.

[0090] When the rigid insert 22 needs to be removed or the shutter assembly needs to be maintained, a reverse external torque interface is applied to the locking body 2124, and the locking body 2124 returns to the initial unlocked state. At this time, the clamping member 2122 can be operated, such as loosening the clamping of the rigid insert 22.

[0091] In this embodiment of the present invention, the hinge center of the locking body 2124 is eccentrically positioned, allowing for a larger displacement at a smaller rotation angle, thereby quickly achieving locking and unlocking functions. This design improves the assembly and maintenance efficiency of the shutter assembly and reduces operation time.

[0092] In other words, to ensure quick clamping of the rigid insert 22, each clamping mechanism 212 is designed as an upper and lower clamping member, which is easy to operate. Alternatively, the clamping mechanism 212 may employ other structures, such as a spring-loaded clamp that automatically locks the rigid insert 22 using a spring preload and can be manually unlocked. A magnetic clamping mechanism may employ an electromagnetic chuck that, when powered, generates a strong magnetic field to attract the ferromagnetic clamp and thereby clamp the rigid insert 22.

[0093] Continue reading Figures 7 to 9 In some embodiments of the present invention, the support member 2121 includes a first support portion 2121-1 and a second support portion 2121-2. The first support portion 2121-1 can be designed as a flat, elongated structure made of a high-strength aluminum alloy. The shape of the portion of the first support portion 2121-1 that engages the carrier body 211 matches the slot 2111 of the carrier body 211. Multiple bolt holes are provided on the connection surface between the first support portion 2121-1 and the carrier body 211, and high-strength bolts are used to securely connect the first support portion 2121-1 to the carrier body 211.

[0094] The second support portion 2121-2 is vertically arranged with the first support portion 2121-1 to form an "L" shape, and forms an arc transition section at the connection with the first support portion 2121-1; wherein the clamping member 2122 and the locking member are both connected to the second support portion 2121-2.

[0095] In this embodiment, the first support portion 2121-1 is fixedly connected to the carrier body 211, and the second support portion 2121-2 is vertically arranged to the first support portion 2121-1 and the arc transition section at the connection is formed, so that the overall structure of the support member 2121 is more stable and can effectively resist various forces generated during the operation of the shutter assembly, such as vibration, impact force, etc., to ensure stable clamping and accurate scanning of the rigid insert 22.

[0096] The second support portion 2121-2, serving as the connecting structure between the clamping member 2122 and the locking component, effectively transmits force to the first support portion 2121-1, which in turn transmits force from the first support portion 2121-1 to the carrier body 211. This rational force transmission path ensures uniform force distribution during the clamping, locking, and scanning processes, reducing the possibility of localized stress concentration and improving the reliability of the entire shutter assembly.

[0097] Continue reading Figure 4 In some embodiments of the present invention, the transmission component 33 includes a ball screw 331 , two guide members 332 and at least two sliders 333 .

[0098] The ball screw 331 is rotatably provided on the supporting component 31 , and the ball screw 331 is in transmission cooperation with the output shaft of the driving component 32 . The transmission cooperation between the ball screw 331 and the output shaft of the driving component 32 is connected by a coupling or a key.

[0099] The two guide members 332 are arranged on both sides of the support component 31 opposite to each other. The two guide members 332 are located on both sides of the ball screw 331. The guide members 332 are arranged parallel to the ball screw 331. The guide members 332 are designed as linear guide rails, and the length of the guide rails is determined according to the stroke requirements of the shutter assembly.

[0100] At least two sliders 333 are respectively embedded between two oppositely arranged guide members 332 . Each slider 333 is in transmission cooperation with the ball screw 331 and in sliding cooperation with the guide member 332 . The bearing component 21 is fixedly connected to each slider 333 .

[0101] The combined use of ball screw 331 and linear guide rails ensures high transmission accuracy for transmission component 33. The precise pitch of ball screw 331 and the precise coordination of slider 333, ball screw 331, and guide 332 enable precise control of the movement distance and speed of support component 21. During the shutter assembly's scanning process, the position of gap 221 in rigid insert 22 scanning the photosensitive component 11 can be accurately controlled, improving scanning resolution and image quality.

[0102] Guide 332 (linear guide) provides stable guidance for slider 333, ensuring its linearity during movement. Even at high speeds or in the presence of certain external interference, slider 333 will not deviate or wobble. This stable motion is transmitted to the carrier 21 and rigid insert 22, ensuring stability during the scanning process and reducing imaging errors caused by unstable motion.

[0103] The effective transmission coordination between the ball screw 331 and the output shaft of the driver 32, as well as the rational coordination between the slider 333, the ball screw 331, and the guide 332, enable the power generated by the driver 32 to be efficiently transmitted to the carrier 21. Throughout the transmission process, energy loss is minimal, enabling stable movement of the carrier 21 with minimal power input, thereby improving the operating efficiency of the shutter assembly.

[0104] Figure 10 yes Figure 5 The main view of the carrier body in the gap scanning mechanism shown. Figure 11 It is a schematic structural diagram of a height compensation component in a shutter assembly provided by an embodiment of the present invention.

[0105] Continue reading Figure 5 , and also see Figure 10 and Figure 11 In some embodiments of the present invention, the transmission component 33 also includes a height compensation component 334, which is fixedly connected to each slider 333; wherein the bearing component 21 is clamped on the height compensation component 334 and is fixedly connected to the slider 333 through the height compensation component 334.

[0106] In the transmission component 33, the height of the slider 333 directly affects the space occupied by the entire transmission structure. When the height compensation member 334 is fixedly connected to the slider 333 and the bearing member 21 is clamped to the height compensation member 334, the installation height of the bearing member 21 relative to the slider 333 can actually be adjusted without changing the structural height of the slider 333 itself. This allows for the selection of a relatively low-height slider 333 when designing the overall structure. For example, if the bearing member 21 is directly mounted on the slider 333, a higher slider 333 may be required to meet the spatial relationship with other components. However, the height compensation member 334 can reduce the height requirement of the slider 333, thereby making the entire transmission component 33 more compact in the vertical direction.

[0107] Lowering the height of the slider 333 indirectly lowers the center of gravity of the support component 21 and the entire transmission component 33. When the slider 333 is lowered, the center of gravity of the entire structure is closer to the bottom of the support component 31. During operation of the shutter assembly, especially during high-speed movement or when subject to external disturbances (such as vibration), a lower center of gravity helps improve the stability of the entire structure. For example, vertical sway is more easily suppressed due to the lower center of gravity, reducing structural instability that could occur due to an excessively high center of gravity, thereby improving the operational reliability of the shutter assembly.

[0108] Continue reading Figure 4In some embodiments of the present invention, the transmission component 33 also includes a detection component 34, the detection component 34 includes a detection element 341 and a trigger element 342, the trigger element 342 is arranged on the slider 333, the detection element 341 is arranged on the guide member 332, and is located on the movement path of the trigger element 342.

[0109] Detection element 341 can be a photoelectric sensor, such as a reflective photoelectric sensor. Trigger element 342 is designed as a thin metal sheet with excellent strength and wear resistance. Trigger element 342 is fixedly connected to slider 333 by welding or mechanical clamping to ensure that trigger element 342 does not loosen during the movement of slider 333.

[0110] When the shutter assembly is not in operation, slider 333 is in its initial position, as is trigger element 342. At this point, detection element 341 is in a standby state, with its LED continuously emitting light. However, the photoelectric receiver receives no signal reflected or blocked by trigger element 342 (depending on the type of photoelectric sensor).

[0111] When the shutter assembly begins operating, the slider 333, driven by the ball screw 331, begins to move along the guide 332. As the slider 333 moves, the trigger element 342 also moves. When the trigger element 342 enters the detection area of the detection element 341 (for a reflective photoelectric sensor, the trigger element 342 enters the area where reflected light can be detected; for a light-blocking photoelectric sensor, the trigger element 342 begins to block light), the photoelectric receiver of the detection element 341 receives a changing signal.

[0112] If the control system determines that the slider 333 has reached a specific position, for example, when the slider 333 reaches the end of its travel, the control system can stop the operation of the driving member 32 based on the signal transmitted by the detection element 341, thereby preventing the slider 333 from continuing to move beyond the normal range. Alternatively, in operations requiring precise control, such as when a shutter assembly is performing a scanning operation, the start and end points of the scanning of the rigid insert 22 on the support member 21 can be precisely controlled based on the detected position of the slider 333.

[0113] The detection assembly 34 accurately monitors the position of the slider 333. Because the detection element 341 is located in the motion path of the trigger element 342, the position of the slider 333 can be acquired in real time during its motion. This precise position monitoring is crucial for the proper functioning of the shutter assembly. For example, when controlling the scanning process of the rigid insert 22, it ensures the accuracy of the start and end positions of the scan, thereby improving the quality and accuracy of the scanned image.

[0114] By detecting the position of the slider 333, when the slider 333 reaches the travel limit, the control system can promptly receive a signal from the detection element 341 and stop the operation of the driving member 32. This effectively prevents the slider 333 from continuing to move beyond the normal operating range, avoids collisions between the slider 333 and the guide member 332 or other components, protects the various components of the transmission member 33, and extends the service life of the equipment.

[0115] Figure 12 It is a structural schematic diagram of a film box in a shutter assembly provided by an embodiment of the present invention. Figure 13 It is a schematic diagram of the partial structure of the film box in the shutter assembly provided by an embodiment of the present invention. Figure 14 It is a schematic diagram of the partial structure of the film box in the shutter assembly provided by an embodiment of the present invention. Figure 15 It is a schematic diagram of the film box seal in the shutter assembly provided by an embodiment of the present invention.

[0116] See Figures 12 to 15 In some embodiments of the present invention, the film box 10 includes a main body and a cover plate 12. The cover plate 12 is provided with a slide groove 121 for inserting the rigid insert 22. Both side walls of the slide groove 121 are shielded with black velvet to prevent light leakage.

[0117] Because the light-shielding insert in the prior art is limited in length and does not penetrate the entire structure of the film box 10, one end of the film box 10 is closed. However, the rigid insert 22 provided in the embodiment of the present invention penetrates the entire structure of the film box 10. Since the sealing plate 12 itself is relatively small, it is difficult to cut into it. Therefore, the present invention sets one end as a fixed sealing plate 12, which no longer serves as a hinge.

[0118] In addition, in order to cooperate with the movement of the rigid insert 22, the retaining edge of the camera back needs to have an avoidance gap to prevent a portion of the rigid insert 22 from being blocked by the retaining edge of the camera back after the film box 10 is loaded into the camera.

[0119] Figure 16 This is a stress test model diagram of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention (the chromatogram is the corresponding stress value, and the value below the chromatogram is the maximum yield value).

[0120] Depend on Figure 16 It can be seen that the rigidity of the linear drive mechanism in the shutter assembly is sufficient to meet the requirements of camera support and precise movement.

[0121] Figure 17 This is a diagram of the tensile and compressive stress test model of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention (the light-colored area is under tension and the dark-colored area is under compression).

[0122] Depend on Figure 17It can be seen that the linear drive mechanism in the shutter assembly can effectively control the tensile / compressive stress peak, ensure uniform profit distribution, effectively reduce stress concentration points, and have a reasonable structural design.

[0123] See Figure 16 and Figure 17 ,Under a load of 20kg, the overall mechanical characteristics of the linear drive ,mechanism performed well, the deformation at the maximum displacement was 0.015mm, and the relative ,displacement of the main motion area was about 0.007mm, which met the design ,requirements.

[0124] Figure 18 This is a strength verification model diagram (relative displacement value) of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention.

[0125] Depend on Figure 18 It can be seen that the linear drive mechanism in the shutter assembly ensures that the overall deformation under the maximum lens load required during installation and shooting is small, and will not affect the final image.

[0126] Figure 19 This is a strength verification model diagram of the linear drive mechanism in the shutter assembly provided by an embodiment of the present invention (relative displacement value under a load of 0.57 kg).

[0127] Depend on Figure 19 As can be seen, the actual load on the linear drive mechanism is only 0.57kg, the maximum displacement is only 0.0004mm, and the relative displacement of the main motion area is 0.00027mm, which has no impact on shooting. In other words, the linear drive mechanism in the shutter assembly ensures that the overall deformation under the typical lens load required during installation and shooting is minimal, without affecting the final image.

[0128] Figure 20 This is a stress test model diagram of the rigid insert in the shutter assembly provided by an embodiment of the present invention (the color spectrum represents the corresponding stress value).

[0129] Depend on Figure 20 It can be seen that the structure and strength of the rigid insert in the shutter assembly are sufficient to meet the reasonable resistance during operation.

[0130] Figure 21 This is a diagram of the tensile and compressive stress test model of the rigid insert in the shutter assembly provided by an embodiment of the present invention (the upper and lower parts are tensile areas, and the middle part is a compression area).

[0131] Depend on Figure 21 It can be seen that the rigid insert in the shutter assembly can ensure the load safety during operation.

[0132] Figure 22 This is a strength verification model diagram (relative displacement value) of the rigid insert in the shutter assembly provided by an embodiment of the present invention.

[0133] Depend on Figure 22 It can be seen that the deformation of the stress concentration area at the edge of the gap of the rigid insert in the shutter assembly is within a safe range and does not affect the final imaging effect.

[0134] See Figures 20 to 22 In this embodiment of the present invention, 6061 aluminum alloy was used to manufacture the rigid insert 22. Testing of the rigid insert 22 under a tensile force of 1 kg revealed that 6061 aluminum alloy performed well as the rigid insert 22. Under the preset tensile force of 1 kg, the maximum deformation of the central gap was only approximately 0.0017 mm, a degree of deformation that has little impact on imaging quality.

[0135] Figure 23 This is a diagram of a stress test model of a support member in a shutter assembly provided by an embodiment of the present invention. Figure 24 This is a displacement test diagram of a support member in a shutter assembly provided by an embodiment of the present invention.

[0136] See Figure 23 and Figure 24 Since the support member 2121 is subjected to lateral force when pulling the rigid insert 22, a lateral force of 1 kg is applied to the single support member 2121 for verification. It can be seen that the stress and displacement levels of the support member 2121 meet the requirements.

[0137] The shutter assembly provided in this embodiment of the present invention is designed in detail based on actual dimensions. Solid modeling is performed, and boundary conditions and loads are determined based on actual force conditions. Performance analysis demonstrates that the shutter assembly's structure is rationally designed to meet the requirements of camera support and precise movement. The shutter assembly provides precise, stable, uniform, and continuous linear motion. The rigid insert 22 slides smoothly during operation, providing excellent light-blocking properties. The gap remains stable under the combined effects of friction and traction.

[0138] An embodiment of the present invention also provides a slit-type large-format scanning camera, which includes a body structure, a lens module and any of the above-mentioned shutter assemblies, wherein the lens module is arranged on the body structure, and the shutter assembly is arranged on the body structure and located in front of the lens module.

[0139] The body structure is made of magnesium-aluminum alloy, which provides sufficient strength and stability. There are multiple compartments inside the body structure for installing and fixing lens modules, shutter assemblies and other electronic components.

[0140] The camera body is equipped with multiple interfaces, including a lens mount, data transmission interfaces (such as USB and HDMI), and a power connector. The lens module is mounted to the camera body via the lens mount. The shutter assembly is installed inside the camera body, in front of the lens module. The shutter assembly is secured to a specific mounting point on the camera body with bolts. When installing the shutter assembly, ensure that the shutter assembly's plane is perpendicular to the optical axis of the lens module to ensure optimal optical performance.

[0141] When the slit-type large-format scan camera is powered on, the power system within the camera body supplies power to the lens module, shutter assembly, and other electronic components. The microcontroller on the circuit board begins initialization and performs a self-test on the lens module and shutter assembly. During this self-test, the lens module checks whether its optical components, such as focus and aperture adjustment, are functioning properly. The shutter assembly checks whether it is opening and closing properly, and the detection component 34 verifies whether the slider 333 has its initial position correct.

[0142] The photographer sends shooting commands to the control system within the camera body by operating buttons on the camera body or using a wireless remote control device. Upon receiving these commands, the control system first sends focus and aperture adjustment commands to the lens module. Based on these commands, the lens module adjusts the focal length and aperture to suit the desired shooting scene. Simultaneously, the control system sends a ready command to the shutter assembly. The shutter assembly's transmission component 33 moves the slider 333 to its initial position (if necessary), and the detection component 34 confirms that the positions of all components are normal.

[0143] When shooting conditions are met, the control system sends a shutter opening and closing command to the shutter assembly. Transmission component 33 in the shutter assembly drives slider 333 according to the command, thereby driving rigid insert 22 to move, scanning the photosensitive element 11 in a slit-like manner. This coordinated operation improves the efficiency of slit-type large-format scan cameras, allowing photographers to capture the desired moment more quickly.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A shutter assembly, characterized in that: include: A film box having a photosensitive component disposed therein; The gap scanning mechanism comprises: A bearing component, cooperating with the film box guide; A rigid insert is inserted into the film box, with both ends fixed to the bearing component, and a gap is provided on the rigid insert; Linear drive mechanism, including: Support components; a driving member, provided on the supporting member; The transmission component is provided on the supporting component and cooperates with the driving member. The transmission component is connected to the bearing component and is used to drive the bearing component to move in a straight line, thereby driving the rigid insert to move in position to scan the photosensitive component in the form of a slit.

2. The shutter assembly according to claim 1, wherein: The rigid insert includes a first insert portion and a second insert portion that are symmetrically arranged; The gap is provided between the first inserting piece portion and the second inserting piece portion; The bearing components are respectively clamped on the first inserting piece portion and the second inserting piece portion.

3. The shutter assembly according to claim 2, wherein: The bearing component includes: A bearing body, matched with the film box guide and connected to the transmission component; Two clamping mechanisms are symmetrically arranged at positions close to both ends of the carrying body, wherein one of the clamping mechanisms is used to clamp the first inserting piece, and the other clamping mechanism is used to clamp the second inserting piece.

4. The shutter assembly according to claim 3, wherein: Each of the clamping mechanisms comprises: A support member, clamped on the carrying body and fixedly connected to the carrying body; a clamping member, hinged to the support member and adapted to cooperate with the support member to clamp a corresponding rigid insert portion; The locking component is hinged to the support component and cooperates with the support component to lock the clamping component.

5. The shutter assembly according to claim 4, wherein: The locking component includes: A connecting body, one end of which is hinged to the support member; The locking body is hinged to the other end of the connecting body. The hinge center of the locking body is eccentrically arranged relative to the center of the locking body. The locking body is suitable for rotating to lock the support member.

6. The shutter assembly according to claim 4, wherein: The support member comprises: A first supporting portion, clamped on the carrying body and fixedly connected to the carrying body; a second supporting portion, disposed perpendicularly to the first supporting portion, and forming an arc transition section at a connection with the first supporting portion; Wherein, the clamping member and the locking member are both connected to the second supporting portion.

7. The shutter assembly according to any one of claims 1 to 6, characterized in that: The transmission components include: a ball screw rotatably mounted on the support member, the ball screw being in driving engagement with an output shaft of the driving member; Two guide members are oppositely arranged on both sides of the support component, the two guide members are located on both sides of the ball screw, and the guide members are arranged parallel to the ball screw; At least two sliders are respectively embedded between the two oppositely arranged guide members, each slider being in driving engagement with the ball screw and in sliding engagement with the guide member; Wherein, the bearing component is fixedly connected to each of the sliders.

8. The shutter assembly according to claim 7, wherein: The transmission component also includes: a height compensation member, fixedly connected to each of the sliders; Wherein, the bearing component is clamped on the height compensation component and fixedly connected to the slider through the height compensation component.

9. The shutter assembly according to claim 7, wherein: The transmission component also includes: The detection component comprises a detection element and a trigger element, wherein the trigger element is arranged on the slider, and the detection element is arranged on the guide member and is located on the movement path of the trigger element.

10. A slit-type large-format scanning camera, characterized in that: include: fuselage structure; A lens module is provided on the body structure; And the shutter assembly according to any one of claims 1 to 9, wherein the shutter assembly is arranged on the body structure and located in front of the lens module.

Images