Image sensing device, image scanning device, and scanning method for image scanning device

Abstract

The present invention provides an image sensing device, an image scanning device, and a scanning method of the image scanning device. The image sensing device includes an image sensing assembly for sterilizing and scanning an object to be scanned, the image sensing assembly including a frame having a receiving cavity and an opening communicating with the receiving cavity, a contact image sensor for reading image information of the object to be scanned, the contact image sensor including a detection light source for emitting a detection beam, and a sterilization module, the sterilization module and the contact image sensor are sequentially arranged in the receiving cavity along a first direction, the sterilization module including an ultraviolet light source capable of emitting ultraviolet light for sterilizing the object to be scanned. The technical solution of the present invention solves the problem that it is difficult to completely sterilize the object to be scanned by the image sensing device of the prior art.

Description

[Technical field]

[0001] This application claims priority to Chinese patent application No. 202110714981.6, filed with the State Intellectual Property Office of China on June 25, 2021, entitled "Image sensing device, image scanning device and scanning method for image scanning device."

[0002] The present invention relates to the technical field of image scanning, and in particular to an image sensing device, an image scanning apparatus and a scanning method for an image scanning apparatus. [Background technology]

[0003] Contact image sensors are used to read scanning objects, which are widely used in image reading devices such as scanners, multifunction printers, bill validators, receipt scanners, etc. For example, scanning objects such as bills, receipts, and documents may have bacteria or viruses attached thereto, and these scanning objects may cause the spread of bacteria or viruses during the scanning process of the scanning device.

[0004] In order to avoid the spread of viruses and bacteria attached to the scanning object, conventional image reading devices generally use intermittent detection light emitted from a detection light source during scanning to scan and sterilize the scanning object, thereby achieving a certain sterilization effect. However, the lighting time of the detection light source used for scanning is short, making it difficult to achieve the purpose of sufficient sterilization. Summary of the Invention [Problem to be solved by the invention]

[0005] The main object of the present invention is to provide an image sensing device, an image scanning apparatus and a scanning method for an image scanning apparatus, so as to solve the problem that it is difficult to completely sterilize a scanned object by the image sensing device of the prior art. [Means for solving the problem]

[0006] In order to achieve the above object, according to one aspect of the present invention, the present invention provides an image sensing device, the image sensing device including an image sensing assembly for sterilizing and scanning a scanning object, the image sensing assembly including a frame having a accommodating cavity and an opening communicating with the accommodating cavity, a contact image sensor for reading image information of the scanning object, the contact image sensor including a detection light source for emitting a detection beam, and a sterilization module, the sterilization module and the contact image sensor are sequentially arranged in the accommodating cavity along a first direction, and the sterilization module includes an ultraviolet light source capable of emitting ultraviolet light for sterilizing the scanning object.

[0007] Furthermore, the image sensing assembly further includes a partition plate located within the accommodating cavity, the partition plate being disposed between the sterilization module and the contact image sensor to divide the accommodating cavity into a first cavity and a second cavity, where the sterilization module is located within the first cavity and the contact image sensor is located within the second cavity.

[0008] Additionally, the image sensing assembly further includes a polarizing member positioned on one side of the ultraviolet light source facing the opening, such that ultraviolet light emitted from the ultraviolet light source is emitted at a predetermined angle away from the detection light source.

[0009] Furthermore, the image sensing device further includes a position detection unit for detecting the position of the scanned object, the position detection unit being provided on at least one side of the frame along the first direction, and a controller, wherein the ultraviolet light source, the contact-type image sensor and the position detection unit are all connected to the controller, and the controller controls the on / off of the ultraviolet light source and the contact-type image sensor based on the detection signal transmitted from the position detection unit.

[0010] Furthermore, the image sensing assembly further includes a light-transmitting plate located in the opening, the light-transmitting plate being connected to the frame.

[0011] Furthermore, the image sensing device includes two oppositely disposed image sensing assemblies, each of which is located on an opposite side of the scanning object, thereby sterilizing and scanning both sides of the scanning object simultaneously.

[0012] Furthermore, the contact image sensor further includes a lens for converging the detection beam reflected by the scanned object, a substrate connected to the frame, and a photosensitive member provided on the substrate, wherein the lens, the photosensitive member and the substrate are sequentially arranged in the accommodating cavity along a second direction perpendicular to the first direction, and the detection beam emitted from the detection light source is reflected by the scanned object, converged by the lens, and then incident on the photosensitive member.

[0013] Further, a detection light source is provided on each side opposite the lens along the first direction.

[0014] According to another aspect of the present invention there is provided an image scanning apparatus comprising an image sensing device as described above and a transport device for transporting a scanned object.

[0015] The transport device further includes a first transport section including two first rollers spaced apart, the space between the two first rollers forming a first transport passage for transporting the scanned object, and the rotation directions of the two first rollers being opposite to each other, and a second transport section including two second rollers spaced apart, the space between the two second rollers forming a second transport passage for transporting the scanned object corresponding to the first transport passage, the rotation directions of the two second rollers being opposite to each other, and the rotation directions of the first roller and the second roller located on the same side of the scanned object being the same.

[0016] According to another aspect of the present invention, there is provided a scanning method of an image scanning device, which comprises using the above-mentioned image scanning device to sterilize and scan an object to be scanned, and the scanning method of the image scanning device includes a step of sterilizing the object to be scanned by a sterilization module and a step of acquiring image information of the object to be scanned by a contact image sensor.

[0017] Furthermore, before the sterilizing step and / or after the acquiring step, the scanning method of the image scanning device further comprises the step of detecting the position of the scanned object by a position detection unit. Effect of the Invention

[0018] In the technical solution of the present invention, a sterilization module is additionally arranged on one side of the contact image sensor, and the sterilization module includes an ultraviolet light source that can emit ultraviolet light, so that before the contact image sensor scans the scanning object, or after the contact image sensor scans the scanning object, the ultraviolet light emitted from the ultraviolet light source can directly and continuously sterilize the scanning object, so as to more completely sterilize the scanning object. [Brief description of the drawings]

[0019] The drawings which are part of this application are used to provide a further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to interpret the present invention and are not intended to unduly limit the present invention. [Figure 1] 1 is a structural schematic diagram of a first embodiment of an image scanning device according to the present invention; [Diagram 2] FIG. 2 is a structural schematic diagram of a second embodiment of an image scanning device according to the present invention; [Diagram 3] FIG. 4 is a structural schematic diagram of an image scanning device according to a third embodiment of the present invention; [Figure 4] 2 is a flow diagram of a method for scanning an image according to an embodiment of the present invention. [Diagram 5] FIG. 2 is a sequence diagram of an operation of an image scanning device when a scanned object enters a sterilization area according to an embodiment of the present invention. [Figure 6] FIG. 13 is a sequence diagram of an operation of an image scanning device when a scanned object leaves a sterilization area according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] It should be noted that, under the condition that there is no conflict, the embodiments and features in the embodiments in the present application may be combined with each other.

[0021] In addition, compared to conventional image sensing devices that use a detection beam to intermittently sterilize the scanned object during scanning, an image sensing device according to an embodiment of the present invention is further equipped with a sterilization module, and the ultraviolet light emitted from the ultraviolet light source of the sterilization module can directly and continuously irradiate the scanned object to sterilize it, thereby completely sterilizing the scanned object.

[0022] It should be noted that in the embodiment of the present invention, the detection light source for scanning the contact image sensor in the prior art generally uses UVA ultraviolet light, which has low intensity and low sterilization effect.

[0023] In the embodiment of the present invention, a contact image sensor with a resolution of 300 DPI (dots per inch) is taken as an example. The pitch of each line is 0.08 mm, and the length of a banknote is about 156 mm. In the process of sterilizing an object to be scanned using ultraviolet light in the UVC band, the ultraviolet light is irradiated to every corner of the surface of the object to be scanned. Therefore, when the contact image sensor scans one pitch, the area hit by the ultraviolet light is about 0.08 x 156 = 12.5 mm2 = 0.125 cm. 2 become.

[0024] In this way, the dose of ultraviolet light of the image sensing device according to the embodiment of the present invention can be calculated based on the power of the UVC ultraviolet light LED array, the area of ​​the ultraviolet light, and the time required for scanning one pitch. As can be seen from the relevant information investigated by the inventor, the dose of ultraviolet light is 10,000 uws / cm to kill the propagation of common bacteria. 2 To kill bacterial spores, the UV light dose must reach 100,000uws / cm 2 , the resistance of viruses to UV light is intermediate between bacterial propagules and spores, and the resistance of fungal spores is stronger than that of bacterial spores, and the UV light dose must reach 600000uws / cm 2Therefore, by comparing the dose of ultraviolet light of the image sensing device of the embodiment of the present invention with the above parameters, the sterilization effect achieved by the embodiment of the present invention can be obtained. In addition, the running speed of the scanned object along the first direction, i.e., the time it takes for the scanned object to pass the image sensing device, can be determined based on the minimum time required for the contact image sensor to scan one pitch. Furthermore, the higher the power of the UVC ultraviolet light LED array, the higher the sterilization effect, and thus the running speed of the scanned object along the first direction can also be improved.

[0025] In the embodiments of the present invention, UVC ultraviolet light refers to short-wave ultraviolet light having a wavelength of 200 nm to 280 nm.

[0026] It should be noted that in the embodiment of the present invention, the sterilization module 12 and the contact image sensor 11 are controlled separately and operate independently without affecting each other. When image scanning is not required, only sterilization of the scanned object can be performed, and when sterilization is not required, only the scanning operation can be performed, thus improving the flexibility and convenience of the image sensing device.

[0027] Example 1 As shown in Fig. 1, a first embodiment of the present invention provides an image sensing device. The image sensing device includes an image sensing assembly for sterilizing and scanning a scanning object 19, and the image sensing assembly includes a frame 14, a contact image sensor 11, and a sterilization module 12. Here, the frame 14 has a receiving cavity and an opening communicating with the receiving cavity, the contact image sensor 11 is used to read image information of the scanning object 19, the contact image sensor 11 includes a detection light source 111 for emitting a detection beam, the sterilization module 12 and the contact image sensor 11 are sequentially arranged in the receiving cavity along a first direction, and the sterilization module 12 includes an ultraviolet light source 20 that can emit ultraviolet light for sterilizing the scanning object 19.

[0028] In the above technical solution, an independent sterilization module 12 is additionally arranged on one side of the contact image sensor 11, and the sterilization module 12 includes an ultraviolet light source 20 that can emit ultraviolet light. Therefore, before the contact image sensor 11 scans the scanning object 19, or after the contact image sensor 11 scans the scanning object 19, the ultraviolet light emitted from the ultraviolet light source 20 can directly and continuously sterilize the scanning object 19, so as to more completely sterilize the scanning object 19 and improve the sterilization effect.

[0029] Preferably, in the first embodiment of the present invention, the scanning object moves from left to right along the first direction in Fig. 1, and the image sensing device first uses the ultraviolet light source 20 to sterilize the scanning object 19, and then uses the contact image sensor 11 to scan the scanning object 19. Of course, in an alternative embodiment not shown in the drawings, the scanning object moves from right to left along the first direction in Fig. 1, thus the scanning object 19 can be scanned by the contact image sensor 11, and then the scanning object 19 can be sterilized by the ultraviolet light source 20.

[0030] Preferably, in an embodiment of the present invention, the ultraviolet light source achieves a germicidal function by irradiating the scanned object with UVC light.

[0031] Specifically, in the first embodiment of the present invention, in the process of scanning each row of the object to be scanned, the contact image sensor is not pulsed, but the UV light source is constantly turned on. Therefore, in the first embodiment, the irradiation time of the ultraviolet light source is greatly improved, and the complete sterilization effect is achieved, and the sterilization effect is ensured while maximizing the scanning speed.

[0032] As shown in FIG. 1, in embodiment 1 of the present invention, the image sensing assembly further includes a partition plate 13 located in the accommodating cavity, and the partition plate 13 is disposed between the sterilization module 12 and the contact image sensor 11 to divide the accommodating cavity into a first cavity and a second cavity, where the sterilization module 12 is located in the first cavity and the contact image sensor 11 is located in the second cavity.

[0033] With the above arrangement, the partition plate 13 installed in the accommodating cavity can separate the ultraviolet light emitted from the sterilization module 12 and the detection beam emitted from the contact image sensor 11, thereby preventing the ultraviolet light from interfering with the detection light beam for scanning the object to be scanned and preventing deterioration of the image quality output by the contact image sensor.

[0034] 1, in the first embodiment of the present invention, the image sensing device further includes a position detection unit 16 and a controller. Here, the position detection unit 16 is used to detect the position of the scanning object 19, and the position detection unit 16 is provided on at least one side of the frame 14 along the first direction, and the ultraviolet light source 20, the contact image sensor 11 and the position detection unit 16 are all connected to the controller, and the controller controls the on / off of the ultraviolet light source 20 and the contact image sensor 11 based on the detection signal transmitted from the position detection unit 16.

[0035] With the above arrangement, the object to be scanned 19 moves along the first direction until it enters the sterilization area of ​​the sterilization module 12, and when the position detection unit 16 detects that the object to be scanned 19 enters the sterilization area of ​​the sterilization module 12, it sends a detection signal to the controller, and the controller also controls the ultraviolet light source 20 and the contact image sensor 11 to be turned on and off, so that the ultraviolet light source 20 and the contact image sensor 11 sequentially sterilize and scan the object to be scanned 19.

[0036] Specifically, as shown in FIG. 1, in the first embodiment of the present invention, the number of position detection units 16 is two, and the two position detection units 16 are located on opposite sides of the frame 14 along the first direction. When the object to be scanned enters the sterilization area (the range that sterilization module 12 can irradiate), the position detection unit 16 on the left side of Figure 1 turns on the ultraviolet light source 20 of the sterilization module 12 to sterilize the object to be scanned 19, and when the object to be scanned 19 continues to advance to the reading area (scanning area) of the contact image sensor 11, it turns on the contact image sensor 11 to scan the object to be scanned 19 and read its image, and then when the object to be scanned 19 moves further along the first direction, the position detection unit 16 on the right side of Figure 1 detects that the object to be scanned 19 is leaving the sterilization area and closes the ultraviolet light source 20 of the sterilization module 12, completing the sterilization of the object to be scanned 19, and when the object to be scanned 19 continues to move along the first direction until it leaves the reading area of ​​the contact image sensor 11, it closes the contact image sensor 11 and completing the reading of the image of the object to be scanned 19. In this way, not only can a sufficient sterilization time be ensured and complete sterilization of the scanned object 19 be achieved, but the ultraviolet light source can also be utilized effectively, the ineffective light emission time can be reduced, the temperature of the ultraviolet light source 20 can be reduced, and the life of the ultraviolet light source 20 can be extended.

[0037] As shown in FIG. 1, in the first embodiment of the present invention, the image sensing assembly further includes a light-transmitting plate 15 located in the opening, and the light-transmitting plate 15 is connected to the frame 14 .

[0038] With the above arrangement, the light-transmitting plate 15 and the frame 14 can seal the sterilization module 12 and the contact image sensor 11 within the accommodating cavity, thus preventing dust from entering the accommodating cavity, and thereby preventing the external environment from affecting the operation of the sterilization module 12 and the contact image sensor 11.

[0039] As shown in FIG. 1, in the first embodiment of the present invention, the contact image sensor 11 further includes a lens 112, a substrate, and a photosensitive member 113. Here, the lens 112 is used to converge the detection beam reflected by the scanning object 19, the substrate is connected to the frame 14, the photosensitive member 113 is mounted on the substrate, the lens 112, the photosensitive member 113 and the substrate are sequentially arranged in the receiving cavity along a second direction perpendicular to the first direction, and the detection beam emitted from the detection light source 111 is reflected by the scanning object 19 and converged by the lens 112 before being incident on the photosensitive member 113.

[0040] In the above technical solution, the detection beam emitted from the detection light source 111 illuminates the scanning object 19, and enters the lens 112 after being reflected by the scanning object 19, and the lens 112 converges the reflected light and illuminates it on the photosensitive element 113, and then the photosensitive element 113 converts the received optical signal into an electrical signal, so that the contact image sensor 11 achieves the function of image reading.

[0041] Preferably, in the first embodiment of the present invention, the detection beam emitted from the detection light source 111 can be visible light (RGB), invisible light (IR), ultraviolet light (UVA), or a combination thereof.

[0042] As shown in FIG. 1, in the first embodiment of the present invention, detection light sources 111 are provided on both sides opposite to a lens 112 along a first direction.

[0043] With the above arrangement, the detection beams emitted from the detection light sources 111 on both sides can scan the scanning object 19, so that the scanning range is more comprehensive, and the intensity of the detection beams can be improved to improve the quality of the scanned image.

[0044] 1, the first embodiment of the present invention further provides an image scanning apparatus, which includes the above image sensing device and a conveying device for conveying a scanning object 19.

[0045] With the above arrangement, the scanning object 19 can be transported using a transport device, so that the scanning object 19 can move along a first direction and the scanning object 19 can pass through the sterilization area and the reading area.

[0046] As shown in Fig. 1, in the first embodiment of the present invention, the conveying device includes a first conveying section and a second conveying section. The first conveying section includes two first rollers 17 spaced apart, the space between the two first rollers 17 forms a first conveying passage for conveying the scanning object 19, and the rotation directions of the two first rollers 17 are opposite, and the second conveying section includes two second rollers 18 spaced apart, the space between the two second rollers 18 forms a second conveying passage for conveying the scanning object 19 corresponding to the first conveying passage, and the rotation directions of the two second rollers 18 are opposite, where the rotation directions of the first rollers 17 and the second rollers 18 located on the same side of the scanning object 19 are the same.

[0047] In the above technical solution, the two first rollers 17 of the first conveying part can move the scanning object 19 to the sterilization area along the first direction, so that the sterilization module 12 can sterilize the scanning object 19, then the two first rollers 17 can continuously convey the scanning object 19 to the scanning area, so that the contact image sensor 11 can scan the scanning object 19, and the two second rollers 18 of the second conveying part can move the scanning object 19 along the first direction to leave the sterilization area and the scanning area. The arrangement of the first conveying part and the second conveying part allows the scanning object 19 to move more smoothly along the first direction.

[0048] Of course, in an alternative embodiment not shown in the drawings, the conveying device includes a first conveying section and a second conveying section, where the first conveying section includes a first roller 17 located on one side of the scanning object 19, and the second conveying section includes a second roller 18, where the first roller 17 and the second roller 18 are located on the same side of the scanning object 19, the rotation directions of the first roller 17 and the second roller 18 are the same, and along the moving direction of the scanning object 19, the first roller 17 and the second roller 18 are located on the opposite side of the image sensing assembly. In this way, the purpose that the scanning object 19 moves along the first direction can be achieved.

[0049] Example 2 2, the difference between the embodiment 2 and the embodiment 1 of the present invention is that the partition plate 13 is not provided in the embodiment 2, but a polarizing member 22 is provided. Specifically, in order to prevent the ultraviolet light emitted from the ultraviolet light source 20 from interfering with the detection beam emitted from the contact image sensor, the image sensing assembly has a polarizing member 22 provided on one side of the ultraviolet light source 20 facing the opening, so that the ultraviolet light emitted from the ultraviolet light source 20 can be emitted at a predetermined angle in a direction away from the detection light source 111.

[0050] With the above arrangement, a portion of the ultraviolet light emitted from the ultraviolet light source 20 can pass through the polarizing element 22, vibrate away from the detection light source 111, and then enter the scanning object 19, and the remaining portion of the ultraviolet light emitted from the ultraviolet light source 20 is absorbed or reflected by the polarizing element 22, thus not only avoiding the ultraviolet light from interfering with the detection beam of the contact image sensor 11, but also sterilizing the scanning object 19.

[0051] Preferably, in this embodiment of the present invention, the polarizing element 22 is located above the ultraviolet light source 20, and thus, all of the ultraviolet light emitted from the ultraviolet light source 20 can be emitted toward the scanning object 19 after passing through the polarizing element 22.

[0052] Preferably, in the second embodiment of the present invention, the polarizing member 22 is a polarizing plate, and the main function of the polarizing plate is to convert the natural light passing through the polarizing plate into polarized light, that is, the polarizer allows light vibrating in a certain direction to pass through, thus the type of polarizing plate can be selected based on the output angle of the required ultraviolet light.

[0053] Other structures of the image scanning device in the second embodiment of the present invention are the same as those in the first embodiment, and will not be described in detail in this specification.

[0054] Of course, in an alternative embodiment not shown in the drawings, the polarizing member 22 (i.e., the image sensing device not only includes the polarizing member 22, but also includes the partition plate 13) can be arranged based on the structure in Example 1, and the polarizing member 22 is located on one side of the ultraviolet light source 20 facing the opening, in this way, the ultraviolet light vibrating in the direction away from the detection light source 111 can pass through the polarizing member 22, and the partition plate 13 can partition the ultraviolet light emitted from the sterilization module 12 and the detection beam emitted from the contact image sensor 11, so as to further avoid the ultraviolet light from interfering with the detection beam for scanning the scanning object.

[0055] Example 3 As shown in FIG. 3, the difference between Example 3 and Example 1 of the present invention is that in Example 3, the image sensing device of the image scanning equipment includes two image sensing assemblies arranged opposite to each other, and the two image sensing assemblies are respectively located on opposite sides of the scanning object 19, thereby sterilizing and scanning both sides of the scanning object 19 simultaneously.

[0056] With the above arrangement, a passage is formed between the two image sensing assemblies, and when the scanning object 19 passes through the passage along the first direction by the driving of the conveying device, the image sensing assemblies on both sides can simultaneously scan and sterilize the front and back sides of the scanning object 19, thereby improving the operating efficiency of the image scanning equipment.

[0057] Other structures of the image scanning device in the third embodiment of the present invention are the same as those in the first embodiment, and will not be described in detail in this specification.

[0058] As shown in Fig. 4, an embodiment of the present invention further provides a scanning direction of an image scanning device. The scanning method of the image scanning device is to sterilize and scan an object to be scanned using the above-mentioned image scanning device, and the scanning method of the image scanning device includes: sterilizing the object to be scanned 19 by the sterilization module 12; and acquiring image information of the object to be scanned 19 by the contact image sensor 11.

[0059] In the above technical solution, the scanning object 19 is first sterilized by the sterilization module 12, and then the image information of the scanning object 19 is obtained by the contact image sensor 11, in this way, the information of the scanning object can be read by the contact image sensor 11 while the scanning object is being sterilized.

[0060] As shown in FIG. 4, in an embodiment of the present invention, before the sterilization step and / or after the acquisition step, the scanning method of the image scanning device further includes a step of detecting the position of the scanned object 19 by a position detection unit 16.

[0061] With the above arrangement, the position of the scanning object 19 can be detected by the position detection unit 16, and when the scanning object 19 moves into the sterilization area of ​​the sterilization module 12 along the first direction, or when the scanning object 19 moves away from the scanning area of ​​the contact image sensor 11 along the first direction, the position detection unit 16 sends a detected signal to the controller, and the controller controls the ultraviolet light source 20 and the contact image sensor 11 to be turned on and off, so that the ultraviolet light source 20 and the contact image sensor 11 sequentially sterilize and scan the scanning object 19.

[0062] As shown in Figures 1 and 5, in an embodiment of the present invention, when the leading edge of the scanning object 19 passes above the position detection unit 16 on the left side of Figure 1, that is, the scanning object 19 enters the sterilization area, the output signal of the position detection unit 16 changes from low level to high level, in this case, the ultraviolet light source 20 of the sterilization module 12 changes from low level to high level, the ultraviolet light source 20 is turned on and enters the disinfection mode, at a first predetermined time t1 after the leading edge of the scanning object 19 passes the position detection unit 16 on the left side of Figure 1, the scanning object 19 enters the scanning area of ​​the contact image sensor 11, the signal of the contact image sensor 11 changes to high level, and the contact image sensor 11 activates the image reading function to scan the scanning object.

[0063] Note that in the embodiment of the present invention, the first predetermined time t1 is the ratio of the length of the sterilization area along the first direction to the speed of the scanned object moving along the first direction.

[0064] As shown in Figures 1 and 6, in an embodiment of the present invention, when the leading edge of the object to be scanned 19 passes directly above the position detection unit 16 on the right side of Figure 1, that is, when the object to be scanned 19 starts to leave the scanning area, the output signal of the position detection unit 16 changes from low level to high level, and the signal of the ultraviolet light source 20 of the sterilization module 12 changes to low level after a second predetermined time t2. In this case, when the object to be scanned 19 leaves the irradiation range of the ultraviolet light source 20 (i.e., the sterilization area), the ultraviolet light source 20 is closed, the sterilization module 12 stops sterilization, and the signal of the contact image sensor 11 changes to low level after a third predetermined time t3. In this case, the object to be scanned 19 leaves the reading range of the contact image sensor 11 (i.e., the scanning area), the contact image sensor 11 stops the image reading function, and the reading of the image of the object to be scanned is completed.

[0065] In addition, in the embodiment of the present invention, the second predetermined time t2 refers to the ratio of the speed of the scanned object along the first direction divided by the difference between the length of the scanned object along the first direction and the area of ​​the scanned region along the first direction, and the third predetermined time t3 refers to the ratio of the length of the scanned object 19 along the first direction to the speed of the scanned object moving along the first direction.

[0066] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: a sterilization module is additionally disposed on one side of the contact image sensor, and the sterilization module includes an ultraviolet light source capable of emitting ultraviolet light, so that before the contact image sensor scans the scanning object, the ultraviolet light emitted from the ultraviolet light source can directly and continuously sterilize the scanning object, so that the scanning object can be more completely sterilized.

[0067] The above description is merely a preferred embodiment of the present invention, and is not intended to limit the present invention. For those skilled in the art, the present invention can be modified and changed in various ways. Modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. [Explanation of symbols]

[0068] The accompanying drawings contain the following symbols: 11. Contact type image sensor, 111. Detection light source, 112. Lens, 113. Photosensitive member, 12. Sterilization module, 13. Partition plate, 14. Frame, 15. Light-transmitting plate, 16. Position detection unit, 17. First roller, 18. Second roller, 19. Target object to be scanned, 20. Ultraviolet light source, 22. Polarizing member

Claims

1. 1. An image sensing device, comprising: an image sensing assembly for sterilizing and scanning a scanning object (19), the image sensing assembly comprising: a frame (14) having a receiving cavity and an opening communicating with said receiving cavity; A contact type image sensor (11) for reading image information of a scanning object (19), the contact type image sensor (11) including a detection light source (111) for emitting a detection beam; a sterilization module (12), wherein the sterilization module (12) and the contact image sensor (11) are sequentially arranged in the receiving cavity along a first direction, the sterilization module (12) including an ultraviolet light source (20) capable of emitting ultraviolet light for sterilizing a scanning object (19); The image sensing assembly further includes a polarizing member (22) located on one side of the ultraviolet light source (20) facing the opening, such that the ultraviolet light emitted from the ultraviolet light source (20) is emitted at a predetermined angle in a direction away from the detection light source (111).

2. 2. The image sensing device of claim 1, wherein the image sensing assembly further includes a partition plate (13) located in the accommodating cavity, the partition plate (13) being disposed between the sterilization module (12) and the contact image sensor (11) to divide the accommodating cavity into a first cavity and a second cavity, wherein the sterilization module (12) is located in the first cavity and the contact image sensor (11) is located in the second cavity.

3. The image sensing device includes: a position detection unit (16) for detecting a position of the scanning object (19), the position detection unit (16) being provided on at least one side of the frame (14) along the first direction; 3. The image sensing device of claim 1 or 2, further comprising a controller, wherein the ultraviolet light source (20), the contact image sensor (11) and the position detection unit (16) are all connected to the controller, and the controller further includes a controller that controls the on / off of the ultraviolet light source (20) and the contact image sensor (11) based on a detection signal transmitted from the position detection unit (16).

4. 3. The image sensing device according to claim 1 or 2, characterized in that the image sensing assembly further comprises a light-transmitting plate (15) located in the opening, the light-transmitting plate (15) being connected to the frame (14).

5. The image sensing device according to claim 1 or 2, characterized in that the image sensing device includes two image sensing assemblies arranged opposite each other, each of the two image sensing assemblies being positioned on opposite sides of the scanning object (19), thereby simultaneously sterilizing and scanning both sides of the scanning object (19).

6. The contact type image sensor (11) a lens (112) for focusing a detection beam reflected by the scanning object (19); A substrate connected to the frame (14); 3. The image sensing device of claim 1 or 2, further comprising: a photosensitive member (113) provided on the substrate, the lens (112), the photosensitive member (113) and the substrate being sequentially arranged in the accommodating cavity along a second direction perpendicular to the first direction, and a detection beam emitted from the detection light source (111) being reflected by the scanning object (19), converged by the lens (112), and then incident on the photosensitive member (113).

7. 7. The image sensing device according to claim 6, wherein the detection light source (111) is provided on both sides opposite the lens (112) along the first direction.

8. 3. An image scanning apparatus, characterised in that it comprises an image sensing device according to claim 1 or 2 and a transport device for transporting the scanned object (19).

9. The conveying device is a first transport section including two spaced apart first rollers (17), the space between the two first rollers (17) forming a first transport path for transporting the scanning object (19), the first transport section having two first rollers (17) rotating in opposite directions; 9. The image scanning device according to claim 8, further comprising: a second transport section including two spaced apart second rollers (18), the space between which forms a second transport path for transporting the scanning object (19) corresponding to the first transport path, the rotation directions of the two second rollers (18) being opposite, and the rotation directions of the first roller (17) and the second roller (18) located on the same side of the scanning object (19) being the same.

10. A scanning method of an image scanning device, the scanning method of the image scanning device being for sterilizing and scanning the scanning object by using the image scanning device according to claim 8, the scanning method of the image scanning device being comprising the steps of: a sterilization step of sterilizing the scanning object (19) by the sterilization module (12); and acquiring image information of the object to be scanned (19) by a contact image sensor (11).

11. The scanning method of the image scanning device according to claim 10, characterized in that before the sterilization step and / or after the acquisition step, the scanning method of the image scanning device further comprises a step of detecting the position of the scanning object (19) by a position detection unit (16).

Images