CN215379031U

CN215379031U - Scanning head based on prism imaging and double-side scanner comprising same

Info

Publication number: CN215379031U
Application number: CN202121869750.4U
Authority: CN
Inventors: 达布希拉图; 欧日乐克; 苏日图; 歆琪乐
Original assignee: Inner Mongolia Altai Electronic Information Technology Co ltd
Current assignee: Inner Mongolia Altai Electronic Information Technology Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-12-31
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a scanning head based on prism imaging, which comprises a prism; a triangular prism is horizontally fixed at the opening at the bottom of the negative pressure cavity, the triangular prism and the bottom of the negative pressure cavity are integrally in a V-shaped structure, a negative pressure port is formed in the inclined plane of the negative pressure cavity above the two sides of the triangular prism, and a light supplement lamp is fixed in the negative pressure cavity; and a camera module is fixed on the negative pressure cavity above the light supplement lamp. The advantages are that: negative pressure is generated in the negative pressure cavity through the fan, so that the pages are well attached to the triangular prism, and the definition of the finished scanned picture is ensured; the content of the pages on two sides is totally reflected to the top surface of the prism by utilizing the reflection principle of the prism, and is reflected to the camera module through the top surface, and the content reflected in the prism is shot and stored through the camera module, so that scanning is realized; the utility model can scan books and booklets on both sides uniformly, smoothly, obliquely and shadowless and efficiently.

Description

Scanning head based on prism imaging and double-side scanner comprising same

The technical field is as follows:

the utility model relates to the technical field of scanners, in particular to a scanning head based on prism imaging and a double-sided scanner comprising the scanning head.

Background art:

scanners are commonly used in computer peripheral devices by capturing images and converting them into digitized input devices that the computer can display, edit, store, and output; the existing scanner has insufficient adaptability to book scanning, and due to the reason that the spine of a book is too thick and the like, the page cannot be tightly adhered to a scanner glass plate after being opened, and the problems that the scanned picture often has shadow, the picture is deformed and inclined, the content of the scanned picture is incomplete and the like are solved; at present, in order to solve the problems, people only can frequently cut off the spine and scan page by page; however, in more scenes in life, books are inconvenient to cut, people can only use pictures with shadows, distortion and inclination, and the pictures cause certain obstacles to subsequent work such as book layout information acquisition, Optical Character Recognition (OCR), layout recovery and the like; if the existing high-speed photographing instrument is used for photographing pages of books, the pages need to be polished and photographed from different directions when the pictures are photographed, and the pictures still need to be adjusted and spliced through post-processing after being photographed; moreover, the high-speed camera can only shoot two pages and then turn pages manually, cannot scan automatically, and is complex to operate.

The utility model has the following contents:

the utility model aims to provide a scanning head based on prism imaging and a double-side scanner comprising the scanning head, and solves the problems that the existing equipment scans texts with spines such as books and booklets unevenly, has shadows and deformed pictures, and needs manual page turning.

The utility model provides a scanning head based on prism imaging, which comprises a prism, a light supplement lamp, a camera module, a negative pressure power source and a negative pressure cavity with an opening at the bottom, wherein the prism is arranged on the scanning head; the triangular prism is horizontally fixed at the opening at the bottom of the negative pressure cavity, the triangular prism and the bottom of the negative pressure cavity are integrally in a V-shaped structure, and negative pressure ports are formed in the inclined planes of the negative pressure cavity above the two sides of the triangular prism; the light supplement lamp is fixed in the negative pressure cavity above the triangular prism; the camera module is fixed with the camera lens orientation on the negative pressure cavity of light filling lamp the prism, the negative pressure power supply with the inside intercommunication of negative pressure cavity.

Further, the negative pressure power source is a fan fixed on the top surface of the negative pressure cavity.

Furthermore, a shock pad is arranged between the lens base of the camera module and the negative pressure cavity.

Furthermore, a steering engine is fixed on the outer wall of one end of the negative pressure cavity, and the output end of the steering engine is connected with a page turning rod arranged on one side of the negative pressure cavity.

The utility model also provides a double-sided scanner, which comprises a base and the scanning head; the top surface horizontal migration of base is equipped with the book support be fixed with the support on the base be connected with on the support reciprocate the setting the scanning head.

Furthermore, a sliding rail is fixed on the top surface of the base along the direction perpendicular to the edge of the prism on the scanning head, a bottom plate is arranged on the sliding rail in a sliding mode, and the book support is fixed on the bottom plate.

Furthermore, the book support comprises two support plates arranged in a V shape, and each support plate is connected with the bottom plate through a connecting piece.

Furthermore, the connecting piece is provided with a long hole which is arranged in parallel relative to the slide rail, a locking screw with the end part connected with the bottom plate in a threaded manner penetrates through the long hole, and the nut of the locking screw is in movable contact with the connecting piece.

Further, a screw rod and an optical axis are vertically arranged on the support, a corresponding sleeve is fixed on the outer wall of the negative pressure cavity on the scanning head, a nut on the screw rod and a sliding sleeve on the optical axis are sleeved with the nut, and a driving motor which is connected with an output shaft and the end portion of the screw rod in a transmission mode is fixed on the base.

The utility model has the advantages that: according to the utility model, negative pressure is generated in the negative pressure cavity through the fan, and the pages attached to the two sides of the triangular prism can be effectively adsorbed in the process that air flow enters from the negative pressure port, so that the pages are well attached to the triangular prism, the definition of the finished scanned picture is ensured, and the defects of shadow, distortion and the like are avoided; in the process that the driving motor drives the negative pressure cavity to move upwards, under the irradiation of the light supplement lamp, the contents of the pages on two sides are totally reflected to the top surface of the prism by using the reflection principle of the prism and are reflected to the camera module through the top surface, and the contents reflected in the prism are shot by the camera module and are spliced into a complete picture to be stored, so that scanning is realized; the utility model can scan books, booklets and the like on both sides uniformly, flatly, obliquely and shadowless and efficiently at the same time, thereby achieving the effect of scanning paper on a flat-panel scanner.

After the scanning is finished in the upward movement process of the negative pressure cavity, when the scanning head rises to be away from the page, the page turning rod is driven by the steering engine to automatically turn the page of the scanned page; the steering engine selected by the utility model is an angle servo driver, the swinging angle is ensured to be continuously changed and controllable, and the book is not easy to damage, so that the utility model can also be suitable for scanning the ancient books, documents and precious books.

Description of the drawings:

fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a schematic perspective view of the first embodiment 1.

Fig. 5 is a schematic perspective view of the second embodiment 1.

Fig. 6 is a schematic structural view of embodiment 2.

Fig. 7 is a schematic structural view of embodiment 2 with the housing removed.

Fig. 8 is a schematic structural view of the base plate and the book holder in embodiment 2.

Fig. 9 is a sectional view B-B of fig. 8.

The parts in the drawings are numbered as follows: base 1, scanning head 2, negative pressure cavity 2.1, inclined plane 2.11, prism 2.2, light filling lamp 2.3, camera module 2.4, negative pressure power supply 2.5, negative pressure mouth 2.6, shock pad 2.7, steering wheel 2.8, turn over page or leaf pole 2.9, nut 2.10, sliding sleeve 2.11, book support 3, layer board 3.1, connecting piece 3.2, slot hole 3.21, locking screw 3.3, support 4, slide rail 5, bottom plate 6, lead screw 7, driving motor 9, optical axis 10, touch screen 12, shell 13.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1: as shown in fig. 1 to 5, the present embodiment provides a scanning head based on prism imaging, which includes a negative pressure cavity 2.1 with an opening at the bottom, a prism 2.2, a light supplement lamp 2.3, a camera module 2.4, and a negative pressure power source 2.5; one of the triangular prisms 2.2 with the downward edge is horizontally fixed at the bottom opening of the negative pressure cavity 2.1, the triangular prism 2.2 is of a positive triangular prism structure, two end faces of the triangular prism 2.2 are abutted against two ends of the negative pressure cavity 2.1, the triangular prism 2.2 and the bottom of the negative pressure cavity 2.1 are integrally of a V-shaped structure, two side faces of the triangular prism 2.2 and an inclined plane 2.11 corresponding to the bottom of the negative pressure cavity 2.1 are positioned in the same plane, and a negative pressure port 2.6 with a gap of 2 mm in width is reserved between the two side faces of the triangular prism 2.2 and the inclined plane 2.11 corresponding to the bottom of the negative pressure cavity 2.1; the negative pressure power source 2.5 is a fan fixed on the top surface of the negative pressure cavity 2.1, and the top surface of the negative pressure cavity 2.1 is fixed with a camera module 2.4 which is arranged in the negative pressure cavity 2.1 and faces the prism 2.2; a light supplement lamp 2.3 arranged right above the triangular prism 2.2 is fixed in the negative pressure cavity 2.1, the light supplement lamp 2.3 in the embodiment is a long strip-shaped LED lamp with the length same as that of the triangular prism 2.2, the light supplement lamp 2.3 is arranged in parallel relative to the triangular prism 2.2, and the light supplement lamp 2.3 is used as a light source when the camera module 2.4 shoots; under the action of a fan, negative pressure is generated in the negative pressure cavity 2.1, in the process that air flow enters from the negative pressure port 2.6, pages attached to two sides of the triangular prism 2.2 can be adsorbed, in the process that the negative pressure cavity 2.1 moves upwards relative to the pages, under the irradiation of the light supplement lamp 2.3, the content of the pages on two sides is totally reflected to the top surface of the triangular prism 2.2 by using the reflection principle of the triangular prism 2.2 and is reflected to the camera module 2.4 through the top surface of the triangular prism 2.2, the content reflected in the triangular prism 2.2 is continuously shot and stored through the camera module 2.4, videos shot by the whole page are spliced into a panoramic image by using the existing panoramic shooting technology, and therefore the scanning of the whole page is achieved; the utility model can realize the good fitting of the page and the prism 2.2, ensure the definition of the finished scanned picture and has no defects of shadow, torque and the like; a shock pad 2.7 is arranged between the lens seat of the camera module 2.4 and the negative pressure cavity 2.1, so that the shock absorption effect on the camera module 2.4 in the running process of the fan can be relieved, and the definition of a scanned picture of the camera module 2.4 is further ensured; therefore, the utility model can be used for scanning books, booklets and the like on two sides uniformly, flatly, slantwise and shadow-free efficiently at the same time, and achieves the effect of scanning paper on a flat-bed scanner.

A steering engine 2.8 is fixed on the outer wall of one end of the negative pressure cavity 2.1, the output end of the steering engine 2.8 is connected with a page turning rod 2.9 arranged on one side of the negative pressure cavity 2.1, and the page turning rod 2.9 is movably arranged below the triple prism 2.2; controlling a steering engine 2.8 to drive a page turning rod 2.9 to swing downwards, and shifting pages adsorbed on one side of the triple prism 2.2 to the other side; the scanning is completed in the process that the negative pressure cavity 2.1 moves upwards relative to the page, and when the scanning head 2 rises to be away from the page, the page turning rod 2.9 is driven by the steering engine 2.8 to automatically turn the page of the scanned page; the steering engine 2.8 selected by the utility model is an angle servo driver, the swinging angle is ensured to be continuously changed and controllable, and books are not easy to damage, so that the utility model can also be suitable for scanning ancient books, documents and precious books.

Example 2: as shown in fig. 6 to 9, the present embodiment provides a duplex scanner including a base 1 and a scanning head 2 described in embodiment 1; a bracket 4 is vertically fixed on the top surface of one end of the base 1, and a scanning head 2 which moves up and down is connected on the bracket 4; a screw rod 7 which is rotatably arranged is vertically arranged on the bracket 4, and an optical axis 10 which is parallel to the screw rod 7 is fixed on the bracket 4; a nut 2.10 sleeved on the screw rod 7 and a sliding sleeve 2.11 sliding up and down along the optical axis 10 are fixed on the outer wall of the negative pressure cavity 2.1, and a driving motor 9 with an output shaft in transmission connection with the bottom end of the screw rod 7 is fixed on the base 1; the driving motor 9 adopts a stepping motor, and the screw rod 7 drives the negative pressure cavity 2.1 to move up and down along the optical axis 10 by controlling the positive and negative rotation of the driving motor 9.

A sliding rail 5 is fixed on the top surface of the base 1, the sliding rail 5 is vertically arranged relative to the edge of the prism 2.2, a bottom plate 6 is arranged on the sliding rail 5 in a sliding manner, and a sliding block which moves along the sliding rail 5 is fixed on the bottom plate 6; a book support 3 arranged below the negative pressure cavity 2.1 is fixed on the bottom plate 6, and the book support 3 can horizontally move on the top surface of the base 1 along with the bottom plate 6; the book support 3 is used for fixing a book to be scanned; the book support 3 comprises two supporting plates 3.1 which are arranged in a V shape, the included angle of the two supporting plates 3.1 is 60 degrees, each supporting plate 3.1 is connected with the bottom plate 6 through a connecting piece 3.2, and each connecting piece 3.2 comprises a connecting plate which is horizontally arranged and a rib plate which is fixed between the connecting plate and the supporting plate 3.1; a long hole 3.21 which is arranged in parallel relative to the slide rail 5 is arranged on the connecting plate of the connecting piece 3.2, a locking screw 3.3 of which the end part is in threaded connection with the bottom plate 6 is arranged on the long hole 3.21 in a penetrating way, and the nut of the locking screw 3.3 is in movable contact with the connecting piece 3.2; the two supporting plates 3.1 can be adjusted along the long holes 3.21, and are suitable for clamping books with different thicknesses; when a book is fixed on the book support 3, the locking screws 3.3 are loosened, the distance between the two support plates 3.1 is adjusted along the long holes 3.21, the spine is placed in the gap between the bottom plates 6 of the two support plates 3.1, the spine is clamped by moving the support plates 3.1, and then the locking screws 3.3 are screwed down, so that the purpose of fixing the book on the book support 3 is achieved.

The driving motor 9 drives the negative pressure cavity 2.1 to move downwards to the position of a book to be scanned fixed on the book support 3, so that the bottom edge of the triangular prism 2.2 is opposite to and inserted into a book seam where the book is unfolded, and two sides of the triangular prism 2.2 are attached to corresponding pages, and the scanning effect is guaranteed; under the action of a fan, negative pressure is generated in the negative pressure cavity 2.1, in the process that air flow enters from the negative pressure port 2.6, pages attached to the two sides of the triangular prism 2.2 can be adsorbed, the driving motor 9 drives the negative pressure cavity 2.1 to move upwards, under the irradiation of the light supplement lamp 2.3, the content of the pages on the two sides is totally reflected to the top surface of the triangular prism 2.2 by using the reflection principle of the triangular prism 2.2 and is reflected to the camera module 2.4 through the top surface, the content reflected in the triangular prism 2.2 is continuously shot and stored by using the camera module 2.4, videos shot by a whole page are spliced into a panoramic image by using the existing panoramic shooting technology, and therefore, the scanning of the whole page is achieved; the utility model can realize the good fitting of the page and the prism 2.2, ensure the definition of the finished scanned picture and has no defects of shadow, torque and the like; the drive motor 9 drives the negative pressure cavity 2.1 to move upwards to complete scanning, and when the scanning head 2 rises to be about to leave pages, the page turning rod 2.9 is driven by the steering engine 2.8 to automatically turn pages of the scanned pages.

In the scanning process, the book seam where the book is unfolded continuously changes along with the progress of page turning, and in order to ensure that the bottom edge of the triangular prism 2.2 can always be over against and inserted into the book seam where the book is unfolded when the triangular prism 2.2 is in contact scanning with the book, the book support 3 provided by the utility model can move along the slide rail 5 to realize a self-adaptive function, namely, the driving motor 9 drives the negative pressure cavity 2.1 to move downwards to be in contact with the book, and drives the book support 3 to move along the slide rail 5 under the action of the negative pressure cavity 2.1 until the book seam where the book is unfolded is over against the bottom edge of the triangular prism 2.2, so that the bottom edge of the triangular prism 2.2 can be conveniently inserted into the book seam where the book is unfolded; cover on base 1 and support 4 and establish and be fixed with integrated into one piece's shell 13, be fixed with touch-control screen 12 on base 1's shell 13, control the scanning through operation touch-control screen 12, the picture real-time transmission that the scanning back was gathered through camera module 2.4 is to touch-control screen 12, is convenient for observe.

The working process is as follows: in the initial state, the scanning head 2 is arranged at the top, a spine to be scanned is clamped by the two supporting plates 3.1 of the book support 3, and a book is unfolded and leans against the two corresponding supporting plates 3.1; operating the touch screen 12 to start scanning, controlling the driving motor 9 to rotate forwards, and driving the scanning head 2 to move downwards until the edge of the triangular prism 2.2 is inserted into the book seam after the book is unfolded, and attaching the two sides of the triangular prism 2.2 to the corresponding pages; starting a fan to enable the negative pressure cavity 2.1 to generate negative pressure, and adsorbing and tightly attaching two innermost pages of the book to two sides of the triangular prism 2.2 and an inclined plane 2.11 of the negative pressure cavity 2.1 through the negative pressure port 2.6 under the action of the negative pressure; controlling a driving motor 9 to rotate reversely, driving a scanning head 2 to move upwards, enabling two innermost pages of a book to be attached to a prism 2.2 to be gradually closed in the upward moving process, meanwhile, irradiating the inside of the prism 2.2 by a light supplement lamp 2.3, enabling the prism 2.2 to upwards reflect an image formed in the prism to a camera module 2.4 in the closing process of the two innermost pages of the book, enabling the camera module 2.4 to shoot characters appearing in the prism 2.2 in the whole process and splicing the characters into a complete picture to be stored in a touch screen 12; when the scanning head 2 rises to be away from the page, the page turning rod 2.9 is driven to rotate by the steering engine 2.8, automatic page turning is realized, and the scanning head 2 continues to rise to the initial position; the above processes are repeated circularly to realize the scanning of the whole book.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The scanning head based on prism imaging is characterized by comprising a prism, a light supplement lamp, a camera module, a negative pressure power source and a negative pressure cavity with an opening at the bottom; the triangular prism is horizontally fixed at the opening at the bottom of the negative pressure cavity, the triangular prism and the bottom of the negative pressure cavity are integrally in a V-shaped structure, and negative pressure ports are formed in the inclined planes of the negative pressure cavity above the two sides of the triangular prism; the light supplement lamp is fixed in the negative pressure cavity above the triangular prism; the camera module is fixed with the camera lens orientation on the negative pressure cavity of light filling lamp the prism, the negative pressure power supply with the inside intercommunication of negative pressure cavity.

2. The triple prism imaging based scan head according to claim 1, wherein the negative pressure power source is a fan fixed to the top surface of the negative pressure chamber.

3. The triple prism imaging based scanning head according to claim 2, wherein a shock pad is provided between the lens holder of the camera module and the negative pressure cavity.

4. The scanning head based on triangular prism imaging according to any one of claims 1 to 3, characterized in that a steering engine is fixed on the outer wall of one end of the negative pressure cavity, and the output end of the steering engine is connected with a page turning rod arranged on one side of the negative pressure cavity.

5. A dual-sided scanner comprising a base and a scanner head according to any of claims 1 to 4; the top surface horizontal migration of base is equipped with the book support be fixed with the support on the base be connected with on the support reciprocate the setting the scanning head.

6. The dual-side scanner according to claim 5, wherein a slide rail is fixed on the top surface of the base along a direction perpendicular to the edge of the prism on the scanning head, a bottom plate is slidably provided on the slide rail, and the book holder is fixed on the bottom plate.

7. The dual-sided scanner of claim 6, wherein the book holder comprises two support plates arranged in a "V" shape, each support plate being connected to the base plate by a connecting member.

8. The dual-side scanner according to claim 7, wherein the connecting member is provided with a long hole parallel to the slide rail, a locking screw having an end portion screwed with the bottom plate is inserted into the long hole, and a nut of the locking screw is in movable contact with the connecting member.

9. The dual-side scanner according to claim 5, wherein the bracket is vertically provided with a screw rod and an optical axis, the outer wall of the negative pressure cavity on the scanning head is fixed with a nut correspondingly sleeved on the screw rod and a sliding sleeve sleeved on the optical axis, and the base is fixed with a driving motor having an output shaft in transmission connection with the end of the screw rod.