Photosensitive imager

Abstract

Provided in the embodiments of the present disclosure is a photosensitive imager (10), the photosensitive imager (10) comprising: an automated entry / exit device (11); a photosensitive chip assembly (65) provided on the automated entry / exit device (11) and configured to be movable with the automated entry / exit device (11) between a first position where the photosensitive chip assembly (65) is located inside the photosensitive imager (10) and a second position where photosensitive chip assembly (65) extends out of the photosensitive imager (10); and a backlight assembly (66) which is provided inside the photosensitive imager (10) and is opposite to the photosensitive chip assembly (65) when the photosensitive chip assembly (65) is at the first position.

Description

Photosensitive imager

[0001] This application claims the benefit of Chinese patent application CN202411471710.2, filed on October 21, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the fields of bioengineering or medical device technology, specifically to a photosensitive imaging device. Background Technology

[0003] Gel imaging systems are primarily used for imaging and analyzing protein and nucleic acid gels. Typically, they provide white light, ultraviolet light, and blue light sources to capture images of the gels. The system's built-in image capture software captures the images, which are then analyzed using image analysis software. This type of device can automatically locate gel bands and offers multiple functions such as molecular weight quantification, density quantification, and PCR quantification. It is suitable for qualitative analysis of the separation and purification results of biomolecules such as DNA, RNA, and proteins.

[0004] Existing gel imaging instruments mainly fall into two categories: cold CCD imaging and darkroom pressing imaging. Cold CCD imaging instruments capture images of the irradiated sample using a camera and lens, while darkroom pressing imaging instruments perform development in a darkroom. Existing gel imaging instruments have shortcomings in the following aspects:

[0005] 1. The shooting time is long, and sample images cannot be obtained in real time.

[0006] 2. The long imaging distance and small chip size result in low imaging sensitivity.

[0007] 3. Large overall dimensions. Summary of the Invention

[0008] The purpose of this disclosure is to at least partially overcome the shortcomings of the prior art and provide a novel photosensitive imager.

[0009] The purpose of this disclosure is also to provide a photosensitive imager that overcomes many of the shortcomings of cold CCD imaging imagers, while also being unaffected by darkrooms and development techniques, effectively solving the problems existing in the prior art.

[0010] The purpose of this disclosure is also to provide a photosensitive imager with short imaging distance, short acquisition optical path, and high sensitivity.

[0011] The purpose of this disclosure is also to provide a small-sized photosensitive imager.

[0012] To achieve the above objectives or one of the objectives, the technical solutions of the embodiments of this disclosure are as follows:

[0013] A photosensitive imager, the photosensitive imager comprising:

[0014] Automatic loading and unloading device;

[0015] A photosensitive chip assembly is disposed on an automated loading / unloading device and configured to move with the automated loading / unloading device between a first position located inside the photosensitive imager and a second position extending outside the photosensitive imager; and

[0016] The backlight assembly is located inside the photosensitive imager and faces the photosensitive chip assembly in the first position.

[0017] The embodiments disclosed herein pertain to a technique for detecting chemiluminescence in gel imaging. This technique overcomes many drawbacks of cold CCD imaging systems and is unaffected by darkroom conditions and developing techniques, effectively solving current technological problems. Using this technique significantly shortens image acquisition time. The photosensitive chip assembly and backlight assembly are directly facing each other, very close together, resulting in an extremely short acquisition optical path. Data can be acquired for 99% of samples within one second. Due to the extremely short acquisition optical path, light loss is minimal, effectively improving sensitivity. The short acquisition time minimizes the impact of sample changes over time, yielding more accurate data. As is well known, some samples are highly sensitive to time, changing over time. Therefore, short image acquisition time greatly expands the application range of this imager. Furthermore, the photosensitive imager of the embodiments disclosed herein is small in size, reducing space occupation. It features automatic loading and unloading capabilities, enabling automated operation, and can be connected and controlled by multiple terminals (monitors, tablets, computers, etc.). Attached Figure Description

[0018] Figure 1 is a perspective view of a photosensitive imager according to an embodiment of the present disclosure, wherein the automatic entry / exit device is in a closed state; Figure 2 is a perspective view of a photosensitive imager according to an embodiment of the present disclosure, wherein the automatic entry / exit device is in an open state; Figure 3 is a side sectional view of a photosensitive imager according to an embodiment of the present disclosure; Figure 4 is a perspective view of a photosensitive imager according to an embodiment of the present disclosure, wherein the cover is removed and the automatic entry / exit device is in a closed state; Figure 5 is a perspective view of a photosensitive imager according to an embodiment of the present disclosure, wherein the cover is removed and the automatic entry / exit device is in an open state; Figure 6 is a rear view of a photosensitive imager according to an embodiment of the present disclosure; Figure 7 is a cross sectional view of a photosensitive imager according to an embodiment of the present disclosure; Figure 8 is a top sectional view of a photosensitive imager according to an embodiment of the present disclosure; Figure 9 is a bottom sectional view of a photosensitive imager according to an embodiment of the present disclosure; Figure 10 is a perspective view of an automatic entry / exit device according to an embodiment of the present disclosure, wherein the automatic entry / exit device is in a closed state. Figure 11 shows the automatic inbound / outbound device of Figure 10 from another angle; Figure 12 is a front view of the automatic inbound / outbound device of Figure 10; Figure 13 is a top view of the automatic inbound / outbound device of Figure 10; Figure 14 is a perspective view of the automatic inbound / outbound device according to an embodiment of the present disclosure, wherein the automatic inbound / outbound device is in an open state; Figure 15 shows the automatic inbound / outbound device of Figure 14 from another angle; Figure 16 is a top view of the automatic inbound / outbound device of Figure 14; Figure 17 is a cross-sectional view of the automatic inbound / outbound device according to an embodiment of the present disclosure, wherein the automatic inbound / outbound device is in a closed state; Figure 18 is another cross-sectional view of the automatic inbound / outbound device according to an embodiment of the present disclosure, wherein the automatic inbound / outbound device is in a closed state; Figure 19 is a partially enlarged view of the automatic inbound / outbound device of Figure 18; Figure 20 is an exploded view of the door, frame, and support plate of the automatic inbound / outbound device according to an embodiment of the present disclosure; Figure 21 is a perspective view of the door fixing block of the automatic inbound / outbound device according to an embodiment of the present disclosure. Detailed Implementation

[0019] Exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements. Furthermore, in the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments disclosed herein for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the drawings.

[0020] Figures 1 and 2 show a photosensitive imager 10 according to an embodiment of the present disclosure. The photosensitive imager 10 has an automatic entry and exit device 11. A cover 12 is provided on the upper side of the automatic entry and exit device 11. An indicator light 13 and a control switch 14 are provided on the cover 12. The indicator light 13 is used to indicate the working status of the photosensitive imager 10, and the control switch 14 is used to control the opening and closing of the automatic entry and exit device 11.

[0021] Figures 3-9 illustrate a photosensitive imager 10 according to an embodiment of the present disclosure through sectional views and partial perspective views. This photosensitive imager 10 mainly comprises an automatic loading / unloading device 11, a photosensitive chip assembly 65, a backlight assembly 66, a system control assembly 62, a central control assembly 63, and a photosensitive chip control assembly 73. The automatic loading / unloading device 11 will be described in detail with reference to Figures 10-21. The photosensitive chip assembly 65 is disposed on the automatic loading / unloading device 11 and configured to move with the automatic loading / unloading device 11 between a first position inside the photosensitive imager 10 and a second position extending outside the photosensitive imager 10. The backlight assembly 66 is disposed inside the photosensitive imager 10 and faces the photosensitive chip assembly 65 in the first position. The backlight assembly can provide backlight of different colors and brightnesses to the system according to user needs. It should be noted that the distance between the photosensitive chip assembly 65 and the backlight assembly 66 is extremely short, less than 5 mm, and optionally less than 1 mm, thereby achieving an extremely short optical path.

[0022] As shown in Figures 3-5, a U-shaped cover 61 is provided inside the housing 12 of the photosensitive imager 10, and the backlight assembly 66 is disposed on the inner side of the U-shaped cover 61; the photosensitive chip assembly 65 is disposed on the support plate 31. The system control assembly 62 is fixed on the fixed base 23 and the backlight assembly 66, and is fixed by the support fastener 64. The system control assembly 62 is configured to convert the external power supply into the power required by the photosensitive imager 10, and to control the entry and exit operation of the automatic entry and exit device 11 and the operation of the backlight assembly 66. It also provides input / output interfaces and wireless connection interfaces for data transmission. The central control assembly 63 is fixed on the system control assembly 62, as shown in Figure 5. The central control assembly 63 is used to provide human-computer interaction services for users. The photosensitive chip control assembly 73 is configured to adjust and control the photosensitive chip assembly 65 to obtain sample luminescence data.

[0023] Advantageously, at least one coating layer is provided on the surface of the photosensitive chip assembly 65 facing the backlight assembly 66. The coating layer is used to contact and support the sample 70. The coating layer prevents the sample from causing contamination to the photosensitive chip assembly (detection chip) during the experiment. The photosensitive chip assembly contacts the sample through the coating layer.

[0024] A power switch 68 and multiple transmission ports 69 are provided on the back side of the photosensitive imager 10. The optical path is extremely short. The indicator light 13 (lamp strip assembly), control switch 14, and power switch 68 are fixed on the housing 12. The indicator light 13 can display the product status and experimental progress. The indicator light 13 is supplied with power and signal through the wire 67. The control switch 14 can send the user's entry and exit request to the system control component, thereby realizing the entry and exit operation. The power switch 68 can realize the product's on / off operation.

[0025] The general workflow of the photosensitive imager according to the embodiments of this disclosure is as follows: The user connects the photosensitive imager to a designated power outlet and turns it on. After preparing the sample, the user opens the automatic loading and unloading device, places the sample on the photosensitive chip of the automatic loading and unloading device (avoiding air bubbles), closes the automatic loading and unloading device, and acquires image data after connecting to devices such as a monitor, tablet, or computer and adjusting relevant parameters and settings as needed. Figure 8 schematically shows multiple samples 70 placed on the photosensitive chip assembly 65. When the backlight assembly 66 is turned on, the photosensitive chip assembly 65 acquires images. The software can determine the position of the sample, thereby identifying the sample area 71, while the area without the sample is designated as the non-sample area 72. After identifying the sample area 71, the backlight assembly 66 can be partially illuminated, i.e., only the sample area 71 with the sample is illuminated, while the non-sample area remains unilluminated. The photosensitive chip assembly 65 acquires images again and then images the sample. This method allows for better sample detection.

[0026] The embodiments disclosed herein pertain to a technique for detecting chemiluminescence in gel imaging. This technique overcomes many drawbacks of cold CCD imaging systems and is unaffected by darkroom conditions and developing techniques, effectively solving current technological problems. Using this technique significantly shortens image acquisition time. The photosensitive chip assembly and backlight assembly are directly facing each other, very close together, resulting in an extremely short acquisition optical path. Data can be acquired for 99% of samples within one second. Due to the extremely short acquisition optical path, light loss is minimal, effectively improving sensitivity. The short acquisition time minimizes the impact of sample changes over time, yielding more accurate data. As is well known, some samples are highly sensitive to time, changing over time. Therefore, short image acquisition time greatly expands the application range of this imager. Furthermore, the photosensitive imager of the embodiments disclosed herein is small in size, reducing space occupation. It features automatic loading and unloading capabilities, enabling automated operation, and can be connected and controlled by multiple terminals (monitors, tablets, computers, etc.).

[0027] Figures 10-16 illustrate the structure of an automatic loading / unloading device 11 according to an embodiment of the present disclosure, including an open state and a closed state. The automatic loading / unloading device 11 mainly includes a frame 21, a door 22, a fixed base 23, a drive assembly 24, a transmission element 25, a power transmission assembly 26, two support and guide elements 29, two slider assemblies 30, and a support plate 31. The fixed base 23, as a load-bearing element, is flat and can cooperate with the housing 12 to form a closed structure. The frame 21 is configured to move along the fixed base 23. The door 22 is disposed on the frame 21. The drive assembly 24 is fixedly disposed on the fixed base 23. Here, the drive assembly 24 includes a motor and a reducer. The transmission element 25 is disposed between the drive assembly 24 and the frame 21, for transmitting the actuating force of the drive assembly 24 to the frame 21.

[0028] Two support guide elements 29 can be configured as two slide rails extending along the moving direction of the frame 21, with the two support guide elements 29 located at the lower parts of both sides of the frame 21 respectively; two slider assemblies 30 are indirectly connected to the frame 21, and the two slider assemblies 30 cooperate with the two support guide elements 29 respectively, allowing the frame 21 to slide along the support guide elements 29; a support plate 31 is located in the frame 21, the frame 21 is fixed on the support plate 31, and one end of the support plate 31 extends out of the frame 21; a power transmission assembly 26 is fixed on the one end of the support plate 31, and the power transmission assembly 26 is connected to the transmission element 25. The transmission element 25 is centrally located between the two support guide elements 29, and the drive assembly 24 is located at one end of the transmission element 25.

[0029] In one embodiment, the transmission element 25 is configured as a transmission belt, which is fitted onto a driving pulley 27 and a driven pulley 28. The driving pulley 27 is connected to the drive assembly 24, and the driven pulley 28 is located on the side of the fixed base 23 away from the driving pulley 27. The power transmission assembly 26 includes an L-shaped plate and a clamping plate. One arm of the L-shaped plate is fixed to one end of the support plate 31, and the other arm of the L-shaped plate is connected to the clamping plate to hold the transmission belt.

[0030] It should be noted that the transmission element in the embodiments of this disclosure is not limited to a synchronous belt, but can also be a steel wire, rope, lead screw, ball screw, gear rack, etc. The drive component can be a pump other than a motor, and the support and guide element can also be a linear guide, lead screw, guide shaft, etc.

[0031] Furthermore, the automatic entry / exit device 11 also includes a circuit board 34, two sensors 32, and a sensing element 33. The circuit board 34 is a long, narrow strip located beside the frame 21 and mounted on the fixed base 23. The two sensors 32 are respectively mounted on both ends of the circuit board 34. The sensing element 33 is mounted on one end of the support plate 31, and is L-shaped, fixed to the support plate 31 by screws. The vertical lower end of the sensing element 33 can extend into the sensor 32. The sensing of the sensing element 33 by the sensor 32 determines whether the automatic entry / exit device 11 is open or closed, and whether it is fully open or fully closed. The sensing device composed of the sensor 32 and sensing element 33 in the embodiments of this disclosure can take the following forms: photoelectric sensor, microswitch, Hall sensor, or other forms.

[0032] In operation, when the user sends an open signal, the drive assembly 24 drives the transmission element 25 to move. The transmission element 25 transmits power to the support plate 31 through the power transmission assembly 26, causing the frame 21 to move outward. When the sensor 32 detects that the exit is complete, the drive assembly 24 stops moving and locks itself. When the user sends an enter signal, the transmission element 25 moves in the opposite direction, transmitting power to the support plate 31 through the power transmission assembly 26, causing the frame 21 to move inward. When the sensor 32 detects that the enter is complete, the drive assembly 24 stops moving and locks itself.

[0033] To ensure the compartment door remains tightly closed regardless of assembly errors or displacement during use, the embodiments of this disclosure improve and optimize the connection structure of the compartment door 22, as shown in Figures 17-21. Specifically, a compartment door insert strip 48 is provided on the back side of the compartment door 22, and an insertion hole 47 is provided on the frame 21. The compartment door insert strip 48 extends into the insertion hole 47 and is directly or indirectly connected to the support plate 31. During assembly, the compartment door 22 can be installed last after the components within the frame 21 have been assembled.

[0034] Advantageously, the door 22 is configured to have a margin of movement relative to the support plate 31 in multiple directions; and the outer periphery of the door 22 forms a conical surface, such that the cross-sectional area of ​​the door 22 perpendicular to the direction from the door 22 to the frame 21 gradually decreases. Referring to Figure 19, the outer periphery of the door 22 is inclined, and correspondingly, the edge of the cover 12 that mates with the door 22 is also inclined. It is readily apparent that when the door 22 has slight assembly errors, or when the position of the components changes during use (because the door is always extending and retracting, such displacement is easy to occur), the door 22 may not align perfectly with the cover 12, i.e., it may not close perfectly. However, when the edge of the door is designed as a conical surface according to the design concept of this disclosure, and the door 22 has a certain margin of movement in the front-back, up-down, and left-right directions, such assembly errors or displacements can be compensated for, ensuring that the door always closes tightly.

[0035] Therefore, the automatic loading and unloading device 11 is designed with the following components: a fixed column 41, a spring 42, a spring fixing bolt 43, a guide limit screw 44, a door fixing block 45, and a locking element 46. The fixed column 41 is fixedly mounted on the support plate 31. A screw hole can be pre-provided on the lower surface of the support plate 31. The fixed column 41 can be bolted into the screw hole. The fixed column 41 serves as a support point for the spring 42.

[0036] The door fixing block 45 is Y-shaped, as shown in Figure 21, and includes a first wall 52 on one side, a second wall 53 and a third wall 54 on the other side. A hollow space is formed between the second wall 53 and the third wall 54, and the door insertion strip 48 is inserted into this hollow space. The door fixing block 45 is provided with spring fixing bolt holes 49, guide limit screw through holes 50, and locking element screw holes 51 along the frame 21. These holes are arranged sequentially along the moving direction of the frame 21. The spring fixing bolt holes 49 and guide limit screw through holes 50 are located on the first wall, and the locking element screw holes 51 are located on the second wall.

[0037] The spring fixing bolt 43 is fixed to the door fixing block 45 through the spring fixing bolt screw hole 49. The spring fixing bolt 43 serves as another support point for the spring 42, so that both ends of the spring 42 are fixed to the fixing post 41 and the spring fixing bolt 43 respectively. In addition, the door fixing block 45 has a guide limit screw through hole 50. The door fixing block 45 is configured to be attached to the support plate 31 by a guide limit screw 44. A screw hole is pre-set on the lower surface of the support plate 31, and the guide limit screw 44 passes through the guide limit screw through hole 50 and is screwed into the screw hole. The inner diameter of the guide limit screw through hole 50 is larger than the outer diameter of the guide limit screw 44, and the connection between the guide limit screw 44 and the support plate 31 allows the door fixing block 45 to have a margin of movement relative to the support plate 31 in multiple directions. That is, the reserved height of the guide limit screw 44 is greater than the height of the door fixing block, so that the door fixing block 45 can move slightly in the front-back, up-down, and left-right directions. The door insertion strip 48 is connected to the door fixing block 45, so it will drive the door 22 to achieve the above-mentioned movement.

[0038] The locking element 46 is used to lock the door insertion strip 48 to the door fixing block 45; the locking element 46 includes a stud, an elastic element disposed in the stud, and a ball located at the end of the elastic element and extending from the stud; the second wall 53 of the door fixing block 45 is provided with a locking element screw hole 51, the locking element 46 is screwed into the locking element screw hole 51, and the ball extends into the hollow space; the door insertion strip 48 is provided with a groove that matches the ball.

[0039] As described above, the door fixing block is secured by guide limit screws and a spring. The spring is in a pre-stretched state, allowing the door fixing block to move and rotate appropriately along the guide limit screws, ensuring the door is in a floating state under spring force after assembly. During assembly, the door is simply pushed into the door fixing block and secured, simplifying the process. The edges of the door and the housing are tapered, automatically guiding the door. Even with minor assembly errors, the floating function of the door fixing block and the tapered surface of the door ensure it closes according to the tapered guide, effectively preventing the entry of light, air, and foreign objects.

[0040] As can be seen from the above technical solution, the actuation mechanism of the automatic loading and unloading device in the embodiments of this disclosure consists of a drive assembly, a transmission element, two support and guide elements, two slider assemblies, a support plate, a power transmission assembly, and a driven wheel. It does not employ an exposed gear and rack structure. The automatic loading and unloading device adopts a tail-centered force-generating dragging structure, with the transmission and dragging parts concealed, resulting in an aesthetically pleasing appearance. The force-generating position conforms to a symmetrical structure, reducing jamming and twisting phenomena during loading and unloading. Furthermore, the loading door is a floating assembly, possessing movement margin in multiple directions relative to the fixed support plate. Therefore, it can self-adjust to adapt to assembly errors or displacement during use, ensuring the loading door remains tightly closed, guaranteeing a light-free and dust-free internal environment, and improving imaging quality.

[0041] Although embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims and their equivalents.

Claims

1. A photosensitive imager (10), wherein, The photosensitive imager (10) includes: Automatic loading and unloading device (11); A photosensitive chip assembly (65) is disposed on an automatic loading / unloading device (11) and configured to move with the automatic loading / unloading device (11) between a first position located inside the photosensitive imager (10) and a second position extending outside the photosensitive imager (10); and The backlight assembly (66) is disposed inside the photosensitive imager (10) and faces the photosensitive chip assembly (65) in the first position.

2. The photosensitive imager (10) of claim 1, wherein, The photosensitive imager (10) also includes: The system control component (62), fixed on the fixed base (23) and the backlight component (66), is configured to convert the external power supply into the power required by the photosensitive imager (10), and control the entry and exit operation of the automatic entry and exit device (11) and the operation of the backlight component (66), while providing input and output interfaces and wireless connection interfaces for data transmission; A central control component (63), fixed to the system control component (62), is used to provide human-computer interaction services to users; and The photosensitive chip control component (73) is configured to adjust and control the photosensitive chip component (65) to obtain sample luminescence data.

3. The photosensitive imager (10) according to claim 2, wherein: At least one coating is provided on the surface of the photosensitive chip assembly (65) facing the backlight assembly (66), the coating being used to contact and support the sample (70).

4. The photosensitive imager (10) according to claim 2, wherein: The housing (12) of the photosensitive imager (10) is provided with an indicator light (13) and a control switch (14). The indicator light (13) is used to indicate the working status of the photosensitive imager (10), and the control switch (14) is used to control the opening and closing of the automatic entry and exit device (11).

5. The photosensitive imager (10) according to claim 4, wherein: A power switch (68) and multiple transmission ports (69) are provided on the back side of the photosensitive imager (10).

6. The photosensitive imager (10) of claim 4, wherein, The automatic inbound / outbound device (11) includes: The fixed base (23); A frame (21) configured to move along a fixed base (23); The warehouse door (22) is mounted on the frame (21); Drive assembly (24), said drive assembly (24) being fixedly mounted on fixed base (23); and A transmission element (25) is disposed between the drive assembly (24) and the frame (21) for transmitting the actuation force of the drive assembly (24) to the frame (21).

7. The photosensitive imager (10) according to claim 6, wherein, The automatic inbound / outbound device (11) also includes: Two support guide elements (29) extend along the moving direction of the frame (21), and the two support guide elements (29) are located at the lower part of both sides of the frame (21); Two slider assemblies (30) are directly or indirectly connected to the frame (21). The two slider assemblies (30) cooperate with two support guide elements (29) respectively, so that the frame (21) can slide along the support guide elements (29); A support plate (31) is located within a frame (21), the frame (21) being fixed to the support plate (31), and one end of the support plate (31) protrudes from the frame (21); and A power transmission assembly (26) is fixed to one end of a support plate (31), and the power transmission assembly (26) is connected to a transmission element (25). The transmission element (25) is centrally located between two support guide elements (29), and the drive assembly (24) is located at one end of the transmission element (25).

8. The photosensitive imager (10) according to claim 7, wherein: The photosensitive imager (10) has a U-shaped cover (61) inside its housing (12), and the backlight assembly (66) is disposed directly or indirectly on the inner side of the U-shaped cover (61); and / or The photosensitive chip assembly (65) is disposed directly or indirectly on the support plate (31).

9. The photosensitive imager (10) according to claim 5, wherein: The distance between the photosensitive chip assembly (65) and the backlight assembly (66) is less than 5 mm.

10. The photosensitive imager (10) according to claim 7, wherein, The automatic inbound / outbound device (11) also includes: The circuit board (34) is a long strip and is located on the side of the frame (21) and mounted on the fixed base (23); Two sensors (32) are respectively set on both ends of the circuit board (34); The sensing element (33) is disposed on one end of the support plate (31).

11. The photosensitive imager (10) according to claim 8, wherein, The back side of the door (22) is provided with a door insertion strip (48), and the frame (21) is provided with an insertion hole (47). The door insertion strip (48) extends into the insertion hole (47) and is directly or indirectly connected to the support plate (31).

12. The photosensitive imager (10) according to claim 11, wherein, The door (22) is configured to have a margin of movement relative to the support plate (31) in multiple directions; and the outer periphery of the door (22) forms a conical surface such that the cross-sectional area of ​​the door (22) perpendicular to the direction from the door (22) to the frame (21) gradually decreases, the outer periphery edge of the door (22) is inclined, and it is also inclined at the edge where the cover (12) fits with the door (22).

13. The photosensitive imager (10) according to claim 12, wherein, The automatic in-and-out device (11) includes a fixed column (41), a spring (42), a spring fixing bolt (43), a guide limit screw (44), a door fixing block (45), and a locking element (46).

14. The photosensitive imager (10) according to claim 13, wherein: The fixed column (41) is fixedly installed on the support plate (31), and the fixed column (41) serves as a support point for the spring (42); The door fixing block (45) is Y-shaped, including a first wall (52) on one side, a second wall (53) and a third wall (54) on the other side, forming a hollow space between the second wall (53) and the third wall (54), and the door insertion strip (48) is inserted into the hollow space; the door fixing block (45) is provided with spring fixing bolt screw holes (49), guide limit screw through holes (50) and locking element screw holes (51), and the spring fixing bolt screw holes (49), guide limit screw through holes (50) and locking element screw holes (51) are arranged in sequence along the moving direction of the frame (21); the spring fixing bolt screw holes (49) and guide limit screw through holes (50) are set on the first wall, and the locking element screw holes (51) are set on the second wall.

15. The photosensitive imager (10) according to claim 14, wherein: The spring fixing bolt (43) is fixed to the door fixing block (45) through the spring fixing bolt screw hole (49). The spring fixing bolt (43) serves as another support point for the spring (42). The two ends of the spring (42) are fixed to the fixing post (41) and the spring fixing bolt (43) respectively. The door fixing block (45) is configured to be attached to the support plate (31) through the guide limit screw (44). A screw hole is pre-set on the lower surface of the support plate (31). The guide limit screw (44) passes through the guide limit screw through hole (50) and is screwed into the screw hole.

Images