Scanning head and electronic equipment
By using light guides in the scanning head to expand the light output area, the problem of excessive local light caused by fill light in the prior art is solved, more uniform light is achieved, and the scanning image quality and image recognition accuracy are improved.
Patent Information
- Application Number
- CN202421362306.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The fill lights of existing scanning pens are likely to cause excessive local light intensity when filling up light, resulting in light spots forming on the images captured by the camera, affecting the scanning effect.
The light guide is introduced into the scanning head, and the light-emitting area of the light guide cavity, the light-out surface and the light-transmitting area are expanded to make the light irradiated to the scanning position more evenly disperse.
It effectively avoids the formation of light spots on the scanned image due to excessive local light illumination, improves the image quality obtained by scanning the camera module, and improves the accuracy of subsequent image recognition.
Smart Images
Figure CN222852314U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic equipment, in particular to a scanning head and electronic equipment. Background Art
[0002] The existing scanning pen is provided with a camera for scanning, and during the scanning process, a fill light is used to illuminate the content to be scanned so as to provide fill light for the camera. When the existing fill light is used for fill light, it is easy to cause excessive local light intensity, thereby forming a light spot on the image captured by the camera, affecting the scanning effect. Utility Model Content
[0003] The utility model provides a scanning head and an electronic device, which are used to solve the defect in the prior art that the local illumination intensity of the fill light is too large when filling light, which easily forms a light spot on the image taken by the camera and affects the scanning effect.
[0004] In a first aspect, the utility model provides a scanning head, comprising: a shell, a fill light, a light guide and a camera module, wherein the end of the shell has a scanning window, the camera module is fixed in the shell and located on the top of the scanning window, the fill light is installed beside the camera module, and the fill light fills the light for the camera module through the light guide, wherein the light guide has a light guide cavity and a light emitting surface arranged on the light guide cavity, the light emitting surface has a light transmitting area, and the light transmitting area faces the opening end of the scanning window.
[0005] According to the scanning head provided by the utility model, one end of the light guide cavity is open, and the fill light is located at the open end of the light guide cavity.
[0006] Alternatively, the light guide cavity is a closed cavity, and the fill light is arranged in the light guide cavity.
[0007] According to the scanning head provided by the utility model, the light emitting surface further has a non-light-transmitting area, and the non-light-transmitting area is arranged at an interval with the light-transmitting area.
[0008] According to the scanning head provided by the utility model, a plurality of grooves arranged at intervals are provided on the light emitting surface side of the light guide, the bottom of each groove forms the light-transmitting area, the area of the light emitting surface located between two adjacent grooves forms a non-light-transmitting area, and the notch of the groove faces the opening end of the scanning window.
[0009] According to the scanning head provided by the utility model, the non-light emitting surface of the light guide and / or the non-light-transmitting area is coated with a light-shielding coating.
[0010] According to the scanning head provided by the utility model, the light-guiding cavity is in the shape of an elongated strip, and its extending direction is parallel to the central axis of the scanning head.
[0011] According to the scanning head provided by the utility model, the light guide member is a structural member made of photoluminescent material, and a light shielding coating is provided on the non-light emitting surface of the light guide member.
[0012] According to the scanning head provided by the utility model, the light guide component is an optical fiber component.
[0013] According to the scanning head provided by the utility model, there are two fill-in lights, the two light guides are arranged in one-to-one correspondence with the two fill-in lights, the two fill-in lights are arranged on opposite sides of the camera module, and the two light guides are arranged on both sides of the scanning window.
[0014] In a second aspect, the utility model further provides an electronic device, comprising a housing and the scanning head as described above.
[0015] The scanning head and electronic equipment of the present invention add a light guide between the fill light and the scanning position of the camera module. The light guide can transmit the light or emit light by itself after receiving the light from the fill light, and the light emitting area facing the scanning position is expanded through the structural coordination of the light guide cavity, the light emitting surface and the light transmission area, so that the light irradiating the scanning position is more evenly dispersed, avoiding the formation of light spots on the scanned image due to excessive local light intensity, and effectively solving the defect in the prior art that the local light intensity of the fill light is too large when filling light, which easily forms light spots on the image taken by the camera and affects the scanning effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 It is a structural schematic diagram of the scanning head provided by the utility model;
[0018] Figure 2 It is a partial structural schematic diagram of the scanning head provided by the utility model;
[0019] Figure 3 It is a structural schematic diagram of the light guide provided by the utility model.
[0020] Reference numerals:
[0021] 1. Scanning head; 11. Shell; 111. Scanning window; 12. Fill light; 13. Light guide; 131. Light guide cavity; 132. Light emitting surface; 1321. Light-transmitting area; 1322. Non-light-transmitting area; 133. Light-shielding coating; 14. Camera module. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.
[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] Combine the following Figure 1-Figure 3 The scanning head of the utility model is described.
[0027] like Figure 1 and Figure 3As shown, the utility model provides a scanning head 1, comprising: a housing 11, a fill light 12, a light guide 13 and a camera module 14, wherein the end of the housing 11 has a scanning window 111, the camera module 14 is fixed in the housing 11 and is located on the top of the scanning window 111, the fill light 12 is installed beside the camera module 14, and the fill light 12 fills light for the camera module 14 through the light guide 13, wherein, as Figure 3 As shown, the light guide member 13 has a light guide cavity 131 and a light emitting surface 132 disposed on the light guide cavity 131 . The light emitting surface 132 has a light transmission area 1321 , and the light transmission area 1321 faces the scanning position of the camera module 14 .
[0028] In the present embodiment, it is understandable that a housing cavity is formed in the housing 11 to accommodate and protect the camera module 14. By providing a scanning window 111 connecting the housing cavity and the outside on the housing 11, the camera module 14 can scan the content to be scanned through the scanning window 111. At the same time, by providing a fill light 12 and a light guide 13 beside the camera module 14, the light emitted by the fill light 12 first enters the light guide cavity 131 of the light guide 13 and irradiates the surface of the light guide 13. The light guide 13 can transmit light or emit light by itself after being irradiated by light. A light emitting surface 132 and a light transmission area 1321 are provided on the side of the light guide cavity 131 facing the scanning position of the camera module 14. The light transmitted or emitted by the light guide cavity 131 can be projected to the scanning position of the camera module 14 through the light transmission area 1321, which is the fill light for the camera module 14. The light emitting surface 132 and the light transmitting area 1321 expand the light emitting area, making the light irradiated to the scanning position more evenly dispersed, avoiding the formation of light spots on the scanned image due to excessive local light, thereby improving the image quality scanned by the camera module 14 and improving the accuracy of subsequent image recognition.
[0029] The scanning head 1 of the utility model is provided with a camera module 14 and a fill light 12 in a housing 11. The camera module 14 can scan the content to be scanned through a scanning window 111 on the housing 11, and the fill light 12 can fill light for the camera module 14 to improve the scanning quality. At the same time, a light guide 13 is added between the fill light 12 and the scanning position of the camera module 14. The light guide 13 can transmit light or emit light by itself after receiving the light from the fill light 12, and the light emitting area facing the scanning position is expanded through the structural coordination of the light guide cavity 131, the light emitting surface 132 and the light transmission area 1321, so that the light irradiating the scanning position is more evenly dispersed, and the formation of a light spot on the scanned image due to excessive local light is avoided, which effectively solves the defect in the prior art that the local light intensity of the fill light is too large when filling light, and it is easy to form a light spot on the image taken by the camera, thereby affecting the scanning effect.
[0030] Optionally, in some embodiments, one end of the light guide cavity 131 is open, and the fill light 12 is located at the open end of the light guide cavity 131 .
[0031] In this embodiment, by setting the fill light 12 at the open end of the light guide cavity 131, the light emitted by the fill light 12 can enter the light guide cavity 131 through the opening and reach the surface of the light guide 13. The light guide 13 can transmit the light or emit light by itself, and direct the light to the scanning position through the light emitting surface 132 and the light transmitting area 1321 for fill light. The structure is simple and convenient and practical.
[0032] Optionally, in some embodiments, the light guide cavity 131 is a closed cavity, and the fill light 12 is disposed in the light guide cavity 131 .
[0033] In this embodiment, the fill light 12 is arranged inside the closed light guide cavity 131, so that the light emitted by the fill light 12 can completely illuminate the surface of the light guide 13, and completely transmit the light to the scanning position through the light-transmitting area 1321 of the light guide 13. This can reduce the amount of light from the fill light 12 emitted from the gap between the light guide 13 and the fill light 12, thereby reducing light leakage and affecting the fill light effect, which is beneficial to further improve the fill light effect on the camera module 14.
[0034] Optionally, in some embodiments, Figure 3 As shown, the light emitting surface 132 further has a non-light-transmitting area 1322 , and the non-light-transmitting area 1322 is arranged at an interval from the light-transmitting area 1321 .
[0035] In this embodiment, by setting the non-light-transmitting area 1322 between the two light-transmitting areas 1321, the non-light-transmitting area 1322 can separate the light-transmitting area 1321, and at least two scattered point light sources or smaller surface light sources are formed on the light-emitting surface 132, so that the light emitted from the light guide 13 to the scanning position is more evenly dispersed, and the formation of light spots on the scanned image due to excessive local light illumination can be more effectively avoided, so as to further improve the quality of the scanned image, which is conducive to improving the accuracy of subsequent image recognition.
[0036] Specifically, in some embodiments, Figure 3 As shown, a plurality of spaced grooves are provided on the light emitting surface side of the light guide 13, the bottom of each groove forms a light-transmitting area 1321, the area between two adjacent grooves of the light emitting surface 132 forms a non-light-transmitting area 1322, and the notch of the groove faces the opening end of the scanning window 111.
[0037] In this embodiment, a plurality of grooves are provided on the light guide 13, and the bottom of the grooves forms a light-transmitting area 1321, and the grooves face the opening end of the scanning window 111. The grooves can play a guiding role, and guide the light emitted from the light-transmitting area 1321 to the opening end of the scanning window 111 and irradiate to the scanning position, so as to achieve a fill-in light effect. The groove-shaped guiding structure is conducive to clarifying the irradiation position of each light-transmitting area 1321, and it is convenient for designers to optimize and adjust the irradiation position of each light-transmitting area 1321 by adjusting the structure and size of the grooves, so as to achieve the best fill-in light effect.
[0038] Optionally, the light guide 13 may include a light guiding portion and a light shading portion; the light shading portion is arranged between any two light guiding portions, one end of the light guiding portion extends to the light guiding cavity 131, and the other end extends to the light emitting surface 132, forming a light-transmitting area 1321; one end of the light shading portion extends to the light emitting surface 132 and is located between the two light-transmitting areas 1321, forming a non-light-transmitting area 1322.
[0039] In some embodiments, Figure 3 As shown, the non-light-emitting surface of the light guide 13 is coated with a light-shielding coating 133 .
[0040] In this embodiment, by coating a light-shielding coating 133 on the non-light-emitting surface of the light guide 13, the light-shielding coating 133 can block the non-light-emitting surface of the light guide 13, thereby preventing light from being emitted from the non-light-emitting surface of the light guide 13 and causing waste of light energy or affecting the fill light effect, thereby making the fill light effect of the fill light 12 and the light guide 13 more stable.
[0041] In some embodiments, Figure 3 As shown, the non-light-transmitting area 1322 of the light guide 13 is coated with a light-shielding coating 133 .
[0042] In this embodiment, the light shielding coating 133 can shield the non-light-transmitting area 1322 of the light guide 13, preventing light from being emitted from the non-light-transmitting area 1322 of the light guide 13, thereby wasting light energy or affecting the fill-in light effect, thereby making the fill-in light effect of the fill-in light 12 and the light guide 13 more stable. At the same time, there is no need to separately set light-transmitting and light-impermeable structures in the light guide 13. The light guide 13 can be set as an integrally formed part, and the light shielding coating 133 can be applied to the light guide 13, which has high structural strength and is easy to manufacture.
[0043] Optionally, in some embodiments, Figure 3 As shown, the light-guiding cavity 131 is in the shape of an elongated strip, and its extending direction is parallel to the central axis of the scanning head 1 .
[0044] In this embodiment, by setting the light guide cavity 131 to be a long strip parallel to the central axis of the scanning head 1, the light emitted by the fill light 12 into the light guide cavity 131 is guided by the light guide cavity 131 and gradually approaches the scanning position, so as to fill in the scanning position.
[0045] In some embodiments, Figure 3 As shown, the light guide 13 is a structural member made of photoluminescent material, and a light shielding coating 133 is provided on the non-light emitting surface of the light guide 13 .
[0046] In this embodiment, the light guide 13 is made of a photoluminescent material. After absorbing the light emitted by the fill light 12, the photoluminescent material can be excited and emit light as a whole. At the same time, the non-light-emitting surface of the light guide 13 is blocked by the light-shielding coating 133, so that the light will not be emitted from the light-shielding coating 133. The light can only be emitted from the light-transmitting area 1321 through the light-emitting surface 132 to the scanning position of the camera module 14, which is the fill light for the camera module 14, expands the light-emitting area, and makes the light irradiated to the scanning position more evenly dispersed, avoiding the formation of light spots on the scanned image due to excessive local light, thereby improving the image quality scanned by the camera module 14 to improve the accuracy of subsequent image recognition.
[0047] Optionally, the light guide member 13 may be one or more of an optical fiber member, a manganese activated fluoride phosphor member, a europium activated sulfide-based phosphor member, and a quantum dot material member.
[0048] Specifically, in some embodiments, the light guide 13 is an optical fiber member. The optical fiber member can transmit the light received toward one side of the light guide cavity 131 to the light-transmitting area 1321 of the light-emitting surface 132 through total reflection and emit it outward for fill-in light. The light loss during the transmission process in the optical fiber member is small, so that the light intensity of the fill-in light to the outside can be guaranteed, and then the fill-in light effect can be guaranteed, so as to improve the scanning effect of the camera module 14 and the subsequent image recognition accuracy.
[0049] In some embodiments, Figure 1 As shown, there are two fill lights 12 , and two light guides 13 are arranged in one-to-one correspondence with the two fill lights 12 . The two fill lights 12 are arranged on opposite sides of the camera module 14 , and the two light guides 13 are arranged on both sides of the scanning window 111 .
[0050] In this embodiment, a fill light 12 is provided on each of the two opposite sides of the camera module 14, and a light guide 13 is provided corresponding to each of the two fill lights 12, so that the scanning position at which the lens of the camera module 14 is aimed can be illuminated more evenly, thereby preventing the scanning position from being illuminated too strongly on one side and forming a light spot on the scanned image, thereby improving the quality of the scanned image and the accuracy of subsequent image recognition.
[0051] Furthermore, the two fill lights 12 can be arranged axially symmetrically about the central axis of the camera module 14 .
[0052] Optionally, in some embodiments not shown, there may be multiple fill lights 12, and the multiple fill lights 12 are arranged around the camera module 14, and the light guide 13 is arranged one by one corresponding to the fill lights 12, and the light guide 13 is arranged around the scanning window 111.
[0053] On the other hand, the utility model further provides an electronic device, comprising a housing and a scanning head 1 provided in any one of the above embodiments.
[0054] It is easy to understand that the electronic device of this embodiment can be any device with image scanning function, such as a scanning pen, a dictionary pen, a barcode scanning gun, etc. The electronic device has a housing (such as the pen barrel of a scanning pen), and a scanning head 1 is fixedly mounted on the housing for scanning. By using the scanning head 1 of the above embodiment, the electronic device of the utility model also has the advantages of the above scanning head 1, which will not be repeated here.
[0055] It is easy to understand that the electronic device is also provided with a recognition device, which is in communication with the camera module 14 and is used to receive the image scanned by the camera module 14 and recognize the image to realize the function of the electronic device. For example, the recognition device of the dictionary pen can use optical symbol recognition and embedded translation system to recognize words in the image scanned by the scanning head 1, and query in the word library, and can display the meaning and pronunciation of the corresponding word.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A scanning head, characterized in that: include: A shell, a fill light, a light guide and a camera module, wherein the end of the shell has a scanning window, the camera module is fixed in the shell and located on the top of the scanning window, the fill light is installed beside the camera module, and the fill light provides fill light for the camera module through the light guide, wherein the light guide has a light guide cavity and a light emitting surface arranged on the light guide cavity, the light emitting surface has a light transmission area, and the light transmission area faces the scanning position of the camera module.
2. The scanning head according to claim 1, characterized in that: One end of the light guide cavity is open, and the fill light is located at the open end of the light guide cavity; Alternatively, the light guide cavity is a closed cavity, and the fill light is arranged in the light guide cavity.
3. The scanning head according to claim 1, characterized in that: The light emitting surface further has a non-light-transmitting area, and the non-light-transmitting area is arranged at an interval with the light-transmitting area.
4. The scanning head according to claim 3, characterized in that: The light emitting surface side of the light guide is provided with a plurality of grooves arranged at intervals, the bottom of each groove forms the light-transmitting area, the area of the light emitting surface between two adjacent grooves forms a non-light-transmitting area, and the notch of the groove faces the opening end of the scanning window.
5. The scanning head according to claim 3, characterized in that: The non-light emitting surface of the light guide and / or the non-light-transmitting area is coated with a light-shielding coating.
6. The scanning head according to claim 1, characterized in that: The light-guiding cavity is in the shape of an elongated strip, and its extending direction is parallel to the central axis of the scanning head.
7. The scanning head according to claim 1, characterized in that: The light guide is a structural member made of photoluminescent material, and a light shielding coating is provided on the non-light emitting surface of the light guide.
8. The scanning head according to claim 7, characterized in that: The light guide component is an optical fiber component.
9. The scanning head according to claim 1, characterized in that: There are two fill-in lights, and the two light guides are arranged in one-to-one correspondence with the two fill-in lights. The two fill-in lights are arranged on opposite sides of the camera module, and the two light guides are arranged on both sides of the scanning window.
10. An electronic device, characterized in that: The invention comprises a housing and a scanning head as claimed in any one of claims 1 to 9.