阅读说明：本技术 扫描装置 (Scanning device ) 是由 汪才全 于 2021-08-30 设计创作，主要内容包括：本申请提供一种扫描装置,扫描装置包括扫描仪和棱镜。扫描仪用于扫描书本,扫描仪包括用于放置待扫描书本的扫描面,待扫描书本被打开且倒放在扫描面上,使待扫描书本内的文字朝向扫描面。棱镜由透明材料制成,棱镜用于放置在待扫描书本的下方,位于相邻两页面的接缝处,用于将相邻两页面中靠近接缝处的文字投影至扫描面。利用棱镜的折射原理,能够将待扫描书本的相邻两页面的接缝处的文字被投影至扫描面,提升扫描效果,与相关技术相比,不需要改进扫描仪,结构简单,成本较低,操作过程简单,提升用户使用体验。(The application provides a scanning device, which comprises a scanner and a prism. The scanner is used for scanning books, and the scanner is including being used for placing the scanning face of waiting to scan books, waits to scan books and is opened and put upside down on the scanning face, makes the characters in waiting to scan books face the scanning face. The prism is made of transparent materials, is used for being placed below a book to be scanned, is positioned at the joint of two adjacent pages, and is used for projecting characters close to the joint in the two adjacent pages to a scanning surface. Utilize the refraction principle of prism, can be with the characters of the seam crossing of the two adjacent pages of the books of treating to be scanned by projection to the scanning face, promote the scanning effect, compare with the correlation technique, need not improve the scanner, simple structure, the cost is lower, and operation process is simple, promotes the user and uses experience.)

1. A scanning device, comprising:

the scanner is used for scanning a book and comprises a scanning surface for placing the book to be scanned, the book to be scanned is opened and placed upside down on the scanning surface, and characters in the book to be scanned face the scanning surface; and

the prism is made of transparent materials, is used for being placed below the book to be scanned, is located at the seam of the two adjacent pages, and is used for projecting characters, close to the seam, in the two adjacent pages to the scanning surface.

2. A scanning device according to claim 1, wherein the prism comprises a triangular prism, one of the edges of the triangular prism being adapted to be clamped within the seam between two adjacent pages of the book to be scanned.

3. A scanning device according to claim 2, wherein the triangular prism has a cross-section in the form of an isosceles triangle or an equilateral triangle.

4. A scanning device according to claim 2, wherein the vertical distance from one of the edges to the scanning surface for clamping in the seam between two adjacent pages of the book to be scanned has a value in the range 8mm to 12 mm; and/or

The length of the prism is equal to or greater than the length of the seam between two adjacent pages of the book to be scanned.

5. A scanning device according to claim 1, wherein the prism comprises a first mirror surface for contacting one of the two adjacent pages and a second mirror surface for contacting the other of the two adjacent pages, the first and second mirror surfaces being planar.

6. A scanning device according to claim 5, characterized in that the angle between the first mirror surface and the scanning surface ranges from 20 ° to 40 °; and/or

The included angle between the second mirror surface and the scanning surface ranges from 20 degrees to 40 degrees.

7. The scanning device according to claim 5, wherein the angle between the first mirror and the second mirror ranges from 100 ° to 140 °.

8. The scanning device according to claim 5, wherein the prism includes a bottom surface attached to the scanning surface, and in an orthogonal projection perpendicular to the scanning surface, a projection area of a portion of the first mirror surface contacting the page is located within a projection area of the bottom surface, and a projection area of a portion of the second mirror surface contacting the page is located within a projection area of the bottom surface.

9. The scanning device according to claim 5, wherein the first mirror surface and the second mirror surface are each provided as a curved surface that is concave toward a direction close to a center of the prism; or

The first mirror surface and the second mirror surface are both arranged to be cambered surfaces protruding towards the direction far away from the center of the prism.

10. The scanning device according to claim 1, wherein the refractive index of the prism is in a range of 1.2 to 1.8; and/or

The light transmittance of the prism at least reaches 80%; and/or

The prism is made of glass, polycarbonate or acrylic; and/or

The scanner comprises a flatbed scanner.

Technical Field

The application relates to the technical field of scanning equipment, in particular to a scanning device.

Background

The scanning device is a device for capturing images, is an optical, mechanical and electrical integrated computer peripheral product, is a third computer input device behind a mouse and a keyboard, can convert the images into a digital format which can be displayed, edited, stored and output by a computer, and is an input device with strong functions. When the books, magazines or notes are copied, the books, magazines or notes are placed on the scanning surface of the scanning device and pressed by hands to start copying and scanning. When a book is scanned, the surface of the paper between two pages has a radian and cannot be pressed and attached to a scanning surface, so that the scanning device fails to read, or the content is deformed, blurred and blackened. In the related technology, the paper content is identified by photographing and software correction, and then the paper content is stored in a JPG format and then sent to a scanning device for printing, so that the operation process is relatively complex, the scanning efficiency is influenced, and the user experience is influenced.

Disclosure of Invention

The application provides a scanning device for improving scanning effect.

An embodiment of the present application provides a scanning device, including:

the scanner is used for scanning a book and comprises a scanning surface for placing the book to be scanned, the book to be scanned is opened and placed upside down on the scanning surface, and characters in the book to be scanned face the scanning surface; and

the prism is made of transparent materials, is used for being placed below the book to be scanned, is located at the seam of the two adjacent pages, and is used for projecting characters, close to the seam, in the two adjacent pages to the scanning surface.

Optionally, the prism includes a triangular prism, and one of the edges of the triangular prism is used for being clamped in the seam between two adjacent pages of the book to be scanned.

Optionally, the cross section of the triangular prism is an isosceles triangle or an equilateral triangle.

Optionally, the range of the vertical distance from one of the edges in the seam between two adjacent pages of the book to be scanned to the scanning surface is 8mm to 12 mm.

Optionally, the length of the prism is equal to or greater than the length of the seam between two adjacent pages of the book to be scanned.

Optionally, the prism includes a first mirror surface for contacting one of the two adjacent pages, and a second mirror surface for contacting the other of the two adjacent pages, and the first mirror surface and the second mirror surface are both planar.

Optionally, the included angle between the first mirror surface and the scanning surface ranges from 20 ° to 40 °.

Optionally, the included angle between the second mirror surface and the scanning surface ranges from 20 ° to 40 °.

Optionally, the included angle between the first mirror surface and the second mirror surface ranges from 100 ° to 140 °.

Optionally, the prism includes a bottom surface attached to the scanning surface, and in orthogonal projection perpendicular to the scanning surface, a projection area of a portion of the first mirror surface in contact with the page is located in the projection area of the bottom surface, and a projection area of a portion of the second mirror surface in contact with the page is located in the projection area of the bottom surface.

Optionally, the first mirror surface and the second mirror surface are both provided as arc surfaces that are concave toward a direction close to the center of the prism.

Optionally, the first mirror surface and the second mirror surface are both provided as cambered surfaces protruding in a direction away from the center of the prism.

Optionally, the refractive index of the prism ranges from 1.2 to 1.8.

Optionally, the light transmittance of the prism is at least 80%.

Optionally, the prism is made of glass, polycarbonate or acrylic.

The scanner comprises a flatbed scanner.

According to the technical scheme that this application embodiment provided, scanning device includes scanner and prism, and the prism is made by transparent material, places the prism in the below of waiting to scan books, and is located the seam crossing of two adjacent pages, utilizes the refraction principle of prism, can be projected the characters of the seam crossing of two adjacent pages of waiting to scan books to the scanning face, promotes the scanning effect, compares with correlation technique, need not improve the scanner, and simple structure, the cost is lower, and operation process is simple, promotes user and uses experience.

Drawings

Fig. 1 is a schematic front view of a scanning device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a prism of the scanning device shown in fig. 1.

Fig. 3 is a schematic partial cross-sectional view of the scanning device shown in fig. 1.

Fig. 4 is a schematic cross-sectional view of another embodiment of a prism of the scanning device of the present application.

Fig. 5 is a schematic cross-sectional view of yet another embodiment of a prism of the scanning device of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" includes two, and is equivalent to at least two. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides a scanning device. The scanning device of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 to 3, the scanning device 10 includes a scanner 100 and a prism 200. Specifically, the scanner 100 is used for scanning a book, and the scanner 100 includes a scanning surface 101 for placing the book 300 to be scanned. The book 300 to be scanned is opened and placed upside down on the scanning surface 101 with the characters inside the book 300 to be scanned facing the scanning surface 101. When the book 300 to be scanned is opened, two adjacent pages 301 are in a cambered surface shape, and a seam 302 is formed between the two adjacent pages. The prism 200 is adapted to be placed beneath a book 300 to be scanned at the seam 302 between two adjacent pages. The prism 200 is made of a transparent material and is used for projecting the characters near the seam 302 in two adjacent pages to the scanning surface 101.

In the above technical solution, the prism 200 of the scanning device 10 is made of a transparent material, and the prism 200 is placed below the book 300 to be scanned and located at the seam 302 between two adjacent pages. By using the refraction principle of the prism 200, the text at the seam 302 of two adjacent pages of the book 300 to be scanned can be projected to the scanning surface 101. So set up, through light refraction, can project the characters far away from scanning surface 101 with seam 302 both sides to scanning surface 101, be equivalent to the effect after the page is flattened, guaranteed the continuity and the integrality of the characters after the scanning to promote the scanning effect. The scanner device does not need to improve the scanner 100, and has simple structure and lower cost. And for the thicker book 300 to be scanned, the operation process is simple, and the use experience of the user is improved.

In some embodiments, scanner 100 comprises a flatbed scanner. A flat-panel scanner is a scanning Device in which scanning is performed by an optical Device such as a CCD (Charge Coupled Device) or a CIS (Contact Image Sensor). The flat-plate scanner has wide application range and larger space for supporting scanning.

In the embodiment shown in fig. 1, the scanner 100 includes a glass plate 102. The upper surface of the glass plate 102 includes a scanning surface 101. In some embodiments, the scanner 100 further comprises a scanning head (not shown) disposed at the bottom of the glass plate 102 for scanning the content projected onto the scanning surface 101. The content herein includes words and/or patterns. In some embodiments, the thickness of the glass sheet 102 ranges from 1mm to 3 mm. In some embodiments, the thickness of the glass sheet 102 may be 1mm or 2mm or 3mm, with a preferred value of 2 mm. The thickness of the glass plate 102 is set to be appropriate, so that the definition of characters can be effectively restored, and the content scanned by the scanning head is not easy to deform.

The present application does not limit the specific shape of the prism 200. For example, the prism 200 may be a prism having a trapezoidal cross section. In the embodiment shown in fig. 2, the prism 200 includes a triangular prism having a triangular cross section, and the light refraction path of the triangular prism is simple and the loss of light is relatively small. In some embodiments, the triangular prism may be isosceles triangular in cross-section. In other embodiments, the triangular prism may be an equilateral triangle in cross-section.

When the triangular prism is placed below the book 300 to be scanned, one of the edges of the triangular prism is used to be clamped in the seam 302 of two adjacent pages 301 of the book 300 to be scanned. Thus, the two faces of the prism are in contact with the pages on either side of the seam 302. Through the refraction of light, the page on two sides of the seam 302 is equivalent to be flattened, and characters can be clearly projected on a scanning surface. As shown in fig. 3, light rays pass through the two faces of the prism, which are in contact with the page 30, and are refracted from the bottom surface 203 of the prism 200, pass through the glass plate 102, and are refracted from the lower side of the glass plate 102, so that characters on both sides of the seam 302 can be mapped to the scanning surface 101. In addition, one edge of the triangular prism is clamped in the joint 302 of the two adjacent pages 301, so that the book 300 to be scanned can be positioned, and the problem that the scanning effect is influenced because the book 300 to be scanned moves during scanning is avoided.

In some embodiments, the prism 200 includes a first mirror 201 for contacting one of the two adjacent pages 301, a second mirror 202 for contacting the other of the two adjacent pages 301, and a bottom surface 203 conforming to the scanning surface 101. In the embodiment shown in fig. 1 and 3, the first mirror 201 is located on the left side of the seam 302 and the second mirror 202 is located on the right side of the seam 302, but is not limited thereto.

In some embodiments, the first mirror 201 and the second mirror 202 are both planar. The refraction loops of the first mirror surface 201 and the second mirror surface 202 of the plane structure are simple, the loss of light is small, characters on the page 301 on two sides of the seam 302 can be refracted to the scanning surface 101, and the scanning effect is better. When the book 300 to be scanned is turned upside down to the scanning surface 101 for scanning, a part of the two adjacent pages 301 at two sides of the seam 302 is in contact with the first mirror 201 and the second mirror 202, and the rest of the two adjacent pages 301 is in contact with the scanning surface 101. In some embodiments, in the orthographic projection perpendicular to the scanning surface 101, the projection area of the portion of the first mirror 201 in contact with the page 301 is located within the projection area of the bottom surface 203, and the projection area of the portion of the second mirror 202 in contact with the page 301 is located within the projection area of the bottom surface 203. With the arrangement, the characters of the parts of the two adjacent pages 301 in contact with the first mirror surface 201 and the second mirror surface 202 can be projected to the scanning surface 101, so that the scanned characters are more complete and clear, and reading failure or fuzzy and black characters are avoided.

Referring to fig. 2 and 3, one of the edges sandwiched in the seam 302 between two adjacent pages 301 of the book 300 to be scanned may be the top edge 204 of the prism 200. The vertical distance L1 from one of the edges to the scanning surface 101 for clamping in the seam 302 between two adjacent pages 301 of the book 300 to be scanned has a value in the range of 8mm to 12 mm. I.e., the vertical distance L1 from the top edge 204 to the scan surface 101 ranges from 8mm to 12 mm. In some embodiments, the vertical distance L1 from the top edge 204 to the scanning surface 101 can be 8mm or 9mm or 10mm or 11mm or 12mm, with a preferred value of 10 mm. The vertical distance from the top edge 204 to the scanning surface 101 is set properly, so that the contact area between two adjacent pages 301 and the first mirror 201 and the second mirror 202 is increased, and thus, characters of a seam 302 between the two pages 301 can be projected to the scanning surface 101, and the scanning effect is improved. In some embodiments, the width L2 of the bottom surface 203 has a value in the range of 35mm to 50 mm. In some embodiments, the width L2 of the bottom surface 203 ranges from a value of 35mm or 40mm or 45mm or 50mm, with a preferred value of 40 mm. The width L2 of the bottom surface 203 is set properly, so as to ensure that the projection area of the contact part of the first mirror 201 and the page 301 and the projection area of the contact part of the second mirror 202 and the page 301 can be located in the projection area of the bottom surface 203, and the projection effect is better.

In the embodiment shown in connection with FIGS. 1 and 3, the text in page 301 adjacent to seam 302 has a horizontal distance L3 from top edge 204 that ranges from 10mm to 20 mm. In some embodiments, the text in page 301 near seam 302 has a horizontal distance L3 from top edge 204 that ranges from a value of 10mm or 15mm or 20mm, with a preferred value of 15 mm. In this embodiment, the horizontal distance L3 of the letter from the top edge 204 is 13.42mm, the letter is shifted by 3.45mm from the horizontal distance L4 of the refraction of the prism 200, and the horizontal distance L5 of the shifted letter from the top edge 204 is 9.96 mm. So configured, the text at the seam 302 of two adjacent pages is projected onto the scanning surface 101 by using the refraction principle of the prism 200. In some embodiments, the offset text is at least 5mm greater than the horizontal distance L5 from the top edge 204 to facilitate distinguishing between the left and right pages of the two adjacent pages 301.

In some embodiments, the angle α 1 between the first mirror 201 and the scanning surface 101 ranges from 20 ° to 40 °. In some embodiments, the angle α 1 between the first mirror 201 and the scan surface 101 may be 20 °, 25 °, 30 °, 35 °, 40 °, with a preferred value of 26.6 °. In some embodiments, the angle α 2 between the second mirror 202 and the scan surface 101 ranges from 20 ° to 40 °. In some embodiments, the angle α 2 of the second mirror 202 to the scan surface 101 may be 20 °, or 25 °, or 30 °, or 35 °, or 40 °, with a preferred value of 26.6 °. The included angle alpha 1 between the first mirror surface 201 and the scanning surface 101 and the included angle alpha 2 between the second mirror surface 202 and the scanning surface 101 are set properly, so that characters close to the seam 302 in the adjacent pages 301 of the book 300 to be scanned can be projected to the scanning surface 101 completely, and the continuity of the characters is guaranteed. In an actual scene, an included angle α 1 between the first mirror 201 and the scanning surface 101 and an included angle α 2 between the second mirror 202 and the scanning surface 101 may be selected according to the thickness of the book 300 to be scanned. For example, for a thicker book 300 to be scanned, where the height of the arch at the seam 302 is higher, the included angles α 1 and α 2 may be set relatively larger. For thinner books 300 to be scanned, the height of the arch at the seams 302 is lower, and the included angles α 1 and α 2 may be set relatively smaller. Therefore, the contact degree of the first mirror surface 201 and the second mirror surface 202 with the pages 301 on the two sides of the seam 302 is ensured, and the projection effect and the scanning effect are improved.

In some embodiments, the angle α 3 between first mirror 201 and second mirror 202 ranges from 100 ° to 140 °. In some embodiments, the angle α 3 between first mirror 201 and second mirror 202 ranges from 100 ° or 105 ° or 110 ° or 115 ° or 120 ° or 125 ° or 130 ° or 135 ° or 140 °, with a preferred value of 126.8 °. The angle α 3 between the first mirror 201 and the second mirror 202 is set properly to ensure that the characters near the seam 302 can be projected to the scanning surface 101 completely, thereby ensuring the continuity of the characters. For example, for a thicker book 300 to be scanned, the height of the arch at the seam 302 is higher, and the angle α 3 between the first mirror 201 and the second mirror 202 can be set relatively smaller. For a thinner book 300 to be scanned, the arching height at the seam 302 is lower, and the angle α 3 between the first mirror 201 and the second mirror 202 can be set relatively larger. Therefore, the contact degree of the first mirror surface 201 and the second mirror surface 202 with the pages 301 on the two sides of the seam 302 is ensured, and the projection effect and the scanning effect are improved.

In some embodiments, the length of the prism 200 is equal to or greater than the length of the seam 302 of two adjacent pages 301 of the book 300 to be scanned. So set up, guarantee that the characters of seam 302 department can all be projected to scanning face 101, guarantee the continuity and the integrality of content, promote the scanning effect.

In some embodiments, the refractive index of the prism 200 is in the range of 1.2 to 1.8. In some embodiments, the refractive index of the prism 200 is in the range of 1.2 or 1.3 or 1.4 or 1.5 or 1.6 or 1.7 or 1.8, with a preferred value of 1.5. The smaller the refractive index, the better the refraction effect and the better the definition of the text projection. In some embodiments, the prism 200 has a transmittance of at least 80%. The higher the light transmittance of the prism 200, the better the refractive clarity, and the better the clarity of the text projected onto the scanning surface 101. In some embodiments, the prism 200 is made of glass, polycarbonate, or acrylic. In some embodiments, the prism 200 is made of glass. In other embodiments, the prism 200 is made of polycarbonate. In still other embodiments, the prism 200 is made of acrylic. Glass, polycarbonate and acrylic all have a high degree of transparency.

In the embodiment shown in fig. 4, the prism 200 includes a first mirror surface 201 and a second mirror surface 202 which are in contact with the page 301 on both sides of the seam 302, and both the first mirror surface 201 and the second mirror surface 202 are provided as arc surfaces which are concave toward the center of the prism 200. Compared with the embodiment shown in fig. 1, the concave first mirror 201 and second mirror 202 conform to the curved shape of the book 300 to be scanned, and can reduce the incident angle, thereby reducing the refraction angle, and being more beneficial for the scanner 100 to capture images, thereby improving the scanning effect.

In the embodiment shown in fig. 5, the prism 200 includes a first mirror surface 201 and a second mirror surface 202 which are in contact with the page 301 on both sides of the seam 302, and the first mirror surface 201 and the second mirror surface 202 are both provided as arc surfaces which are convex in a direction away from the center of the prism 200.

The first mirror surface 201 and the second mirror surface 202 which are concave or the first mirror surface 201 and the second mirror surface 202 which are convex can be selected according to the material of the prism 200. The material of the prism 200 includes, but is not limited to, glass, polycarbonate, acryl, etc.

It should be noted that the scanner, the book to be scanned, the two adjacent pages, and the seam in the embodiments shown in fig. 4 and fig. 5 are similar to the scanner, the book to be scanned, the two adjacent pages, and the seam in the embodiments shown in fig. 1 to fig. 3, and specific structures, position settings, and function implementations thereof may refer to the embodiments shown in fig. 1 to fig. 3, and are not repeated herein.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.