CN210166790U - Image recognizing and reading equipment - Google Patents
Image recognizing and reading equipment Download PDFInfo
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- CN210166790U CN210166790U CN201921207394.2U CN201921207394U CN210166790U CN 210166790 U CN210166790 U CN 210166790U CN 201921207394 U CN201921207394 U CN 201921207394U CN 210166790 U CN210166790 U CN 210166790U
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Abstract
The utility model relates to an image reading device, which comprises a bracket and an image reading element arranged on the bracket; the device also comprises a light source component arranged on the bracket and a filtering component arranged on the bracket and opposite to the light source component; the image reading element forms an image reading area in the reading direction; the light filtering component comprises a light filtering surface, and the light filtering surface is intersected with the optical axis of the image reading element and forms a second set included angle; the optical axis of the light source component is intersected with the light filtering surface to form a third set included angle; the light source component emits light towards the light filtering surface and is reflected by the light filtering surface to form reflected light; the optical axis of the reflected light extends towards the image reading area and is arranged close to the optical axis of the image reading element. The image reading device has the advantages of simple structure, low production cost and high reading accuracy.
Description
Technical Field
The utility model relates to an image recognition field, more specifically say, relate to an image recognition equipment.
Background
A light source assembly 30, i.e., a targeting unit, which is an important element of the image recognition engine, projects a pattern on the surface of an object, and is used for guiding a user to target so as to place an image to be recognized in the field of view of the image recognition engine; the existing image recognition apparatus: firstly, the reading element 20 and the light source assembly 30 are arranged side by side on the support 10, and due to the limited structure, the distance between the center of the aiming pattern and the center of the reading element 20 is large, about 6mm is needed, so that the center of the reading element is inconsistent with the center of aiming, the reading accuracy is affected, and the reading distance is closer, the reading deviation is affected; as shown in fig. 1. Secondly, the reading element 20 and the light source assembly 30 are arranged side by side on the bracket 10, and the light source assembly 30 is respectively arranged at two sides of the reading element 20, so that the center of the reading element is between the centers of the two light source assemblies, as shown in fig. 2; this scheme needs the light source subassembly of two sets, and the center that its light source subassembly aimed the pattern is great with the recognition center distance of recognition component, causes the recognition center inconsistent with the recognition center of aiming, influences the accuracy of recognition to its structure is complicated, and the cost increases, is not direct alignment moreover, the easy misleading user.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that, a modified image recognition equipment is provided.
The utility model provides a technical scheme that its technical problem adopted is: constructing an image reading device comprising a support, an image reading element mounted on said support; the device also comprises a light source component arranged on the bracket and a filtering component arranged on the bracket and opposite to the light source component;
the image reading element forms an image reading area in the reading direction;
the light filtering component comprises a light filtering surface, and the light filtering surface is intersected with the optical axis of the image reading element and forms a second set included angle; the optical axis of the light source component is intersected with the light filtering surface to form a third set included angle;
the light source component emits light towards the light filtering surface and is reflected by the light filtering surface to form reflected light; the optical axis of the reflected light extends towards the image reading area and is arranged close to the optical axis of the image reading element.
Preferably, an intersection point of the optical axis of the light source assembly and the light filtering surface coincides with an intersection point of the optical axis of the image reading element and the light filtering surface.
Preferably, the second set angle and the third set angle are complementary angles.
Preferably, the optical axis of the reflected light coincides with the optical axis of the image reading element.
Preferably, the light source assembly comprises a light exit surface;
the light filtering surface and the light emitting surface form a first set included angle.
Preferably, the light filtering assembly comprises a supporting piece arranged in parallel with the light emergent surface and a light filter arranged on the supporting piece and forming a fourth set included angle with the supporting piece;
the light filtering surface is arranged on the light filtering sheet.
Preferably, the image reading element comprises a lens barrel body, an induction chip installed in the lens barrel body, and an optical lens installed in the lens barrel body and positioned in the induction direction of the induction chip;
the optical filter is obliquely arranged on the end face of the lens barrel body and forms a fifth set included angle with the end face.
Preferably, the first set included angle is 45 degrees;
and/or the second set included angle is 45 degrees;
and/or the third set included angle is 45 degrees;
and/or the fourth set included angle is a 45-degree angle;
and/or the fifth set included angle is 45 degrees.
Preferably, the holder comprises a bottom wall and a side wall;
the image reading element is mounted on the bottom wall;
the light source assembly is arranged on the side wall and comprises a hollow cylinder, a light emitting source arranged in the cylinder and a light condensing unit arranged in the cylinder and positioned in the light emitting direction of the light emitting source.
Preferably, the light condensing unit includes a convex lens or a lens group.
Implement the utility model discloses an image recognition equipment has following beneficial effect: this image recognition equipment sets for the contained angle and gives out light through this light source subassembly towards this light filtering face through crossing the formation second of the optical axis of this light source subassembly with its relative light filtering face of light filtering subassembly that sets up to form the reverberation optical axis by this light filtering face reflection towards the regional extension of high image recognition picture and the reverberation of being close to the optical axis setting of image recognition component, and then can make the center of aiming more be close to the recognition center in image recognition region, thereby can improve the accuracy of recognition. The image reading device has the advantages of simple structure, low production cost and high reading accuracy.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural diagram of a first embodiment of a conventional image reading apparatus;
fig. 2 is a schematic structural diagram of a second embodiment of a conventional image reading apparatus;
fig. 3 is a schematic structural view of an image recognition device according to some embodiments of the present invention;
fig. 4 is a schematic view of a reflection state of the image reading apparatus shown in fig. 3.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 3 and 4 show some preferred embodiments of the image recognition device of the present invention. The image reading equipment can be used for reading bar codes and two-dimensional codes and has the advantages of simple structure, low production cost and high reading accuracy.
As shown in fig. 3 and 4, the image reading apparatus includes a support 10, an image reading element 20, a light source assembly 30, and a light filter assembly 40; the image sensor 20, the light source assembly 30, and the light filter assembly 40 are all mounted on the support 10, and the image sensor 20 can read and decode an image, which forms an image sensing area 50 in the reading direction. The light source assembly 30 can be used to emit light to illuminate the image sensor 20, so as to facilitate image capture by the image sensor 20. The filter assembly 40 can reflect light emitted from the light source assembly 30 to the image reading region 50 to illuminate the image reading element 20. In other embodiments, the image recognition device can further include a housing (not shown); the bracket 10 can be mounted in a housing (not shown), and the image sensor 20, the light source assembly 30, and the light filter assembly 40 can be accommodated in the housing (not shown).
Further, in some embodiments, the holder 10 may include a bottom wall 11 and a side wall 12; the bottom wall 11 can be formed as a unitary structure with the side wall 12, and the bottom wall 11 can be used for mounting the image reading element 20. The side wall 12 may be perpendicular to the bottom wall 11, and may be used for mounting the light source assembly 30.
Further, in some embodiments, the image reading element 20 may be disposed on the bottom wall 11 along a direction perpendicular to the bottom wall 11, and may include a lens barrel body 21, a sensing chip 23, and an optical lens 22. The lens barrel body 21 may be a hollow structure, and may be disposed on the bottom wall 11 along a direction perpendicular to the bottom wall 11, and may be used for mounting the sensing chip 23 and the optical lens 22. The optical lens is mounted on the upper portion of the lens barrel body 21, and is located in the sensing direction of the sensing chip 23, and can be used for scanning an image. The sensing chip 23 can be installed in the lens barrel body 21, can be attached to the bottom wall 11 of the support 10, is disposed opposite to the optical lens 22, and can be used for sensing, recognizing and interpreting an image formed by the optical lens 22. In some embodiments, the optical axis AC of the image reading element 20 is the image reading center 51 of the image reading region at the intersection of the image reading region 50, i.e. the optical axis AC of the image reading element 20 is the central axis of the image reading region 50.
Further, in some embodiments, the light source module 30 can be mounted on the sidewall 12 along a direction perpendicular to the sidewall 12, and the light emitting direction thereof is perpendicular to the sidewall 12. The light source assembly 30 may include a cylinder 31, a light emitting source 32, and a light condensing unit 33; the barrel 31 can be used for installing the light source 32 and the light gathering unit 33. The light emitting source 32 can be illuminated in an energized state to illuminate the image sensing element 30. The light-gathering unit 33 can gather the light emitted from the light-emitting source 32.
The cylinder 31 may be a hollow structure, which can be installed on the sidewall 12 along a direction perpendicular to the sidewall 12, and can be used for installing the light emitting source 32 and the light collecting unit 33. The cylinder 31 may include a fixing portion, and a mounting portion; the fixing portion may be mounted on the sidewall 12, and may be attached or welded to the sidewall 12, and both the inner diameter and the outer diameter of the fixing portion are larger than those of the mounting portion, and the mounting portion may be disposed on the fixing portion, and may be used for mounting the light condensing unit 33.
The light source 32 may be mounted in the barrel 31, and in particular, it may be located in the fixing portion, and it may be a light source of any wavelength, and may generally be a monochromatic light source convenient for human eye observation, such as red light with a wavelength of 650 mm. It will be appreciated that in some embodiments of the gas, it may also be possible to use a combination of light sources of a plurality of monochromatic lights of a particular wavelength. The light source 32 may be a laser emitter, or an LED light bead, which may be attached to the sidewall 12 in the form of a patch.
The light-gathering unit 33 can be installed in the cylinder 31 and can be located in the light-emitting direction of the light-emitting source 32, and specifically, it can be installed in the installation portion, and it can be a convex lens, which can be made of transparent optical material, and has certain optical characteristics, so that the light emitted by the light-emitting source 32 can pass through and be focused or imaged to form a cursor with a certain shape, and the light emitted by the light-emitting source 32 can be brighter. It is understood that in other embodiments, the light-gathering unit 33 may not be limited to a convex lens, and may be a lens group. In some embodiments, a light exit surface 331 is disposed in the light exit direction of the light collecting unit 30, and the light exit surface 331 may be located at the exit end of the cylinder 31 and parallel to the end surface of the cylinder 31. The light-emitting surface 331 is for the light-condensing unit 30 to emit light.
Further, in some embodiments, the emission assembly 40 may include a support 41, and a filter 42; the supporting member 41 is disposed on the bracket 10 and can be parallel to the light emitting surface 331. The optical filter 42 can be mounted on the supporting member 41, and can be disposed opposite to the light source assembly 30 and obliquely disposed on the image reading element 20 for reflecting the light emitted from the light source assembly 30 to the image reading area 50.
The support member 41 may be a support plate which is mounted on the bottom wall 11 in a direction perpendicular to the bottom wall 11, and which is fixed to the bottom wall 11 by welding, it being understood that in some embodiments, it may be detachably connected to the bottom wall 11 by providing a connecting structure. The supporting member 41 can be disposed on a side of the image recognition element 20 opposite to the light source assembly 20, and the height of the supporting member 41 can be greater than the height of the image recognition element 20, so as to cooperate with the image recognition element 20 to tilt the optical filter 41.
The optical filter 41 can be obliquely disposed on the end surface of the lens barrel body 21, one end of the optical filter can be connected to the supporting member 41, the other end of the optical filter can be connected to the lens barrel body 21, and the optical filter can respectively form a fourth included angle α with the supporting member 41 and the end surface of the lens barrel body 214And a fifth set angle α5In some embodiments, fourth included angle α4And a fifth set angle α5May each be 45 degrees, it being understood that in some embodiments the gas may not be limited to 45 degrees.
The reflection wavelength of the filter 40 is matched with the wavelength of the light source 30, so thatThe light source 30 can be reflected in the wavelength range without affecting the imaging light transmission of the image sensor 20. in some embodiments, the filter 42 is provided with a light filtering surface 421, and the light filtering surface 421 and the light emitting surface 331 form a first predetermined angle α1First set angle α1May be at a 45 degree angle, it will be appreciated that in other embodiments, the first set angle α1May not be limited to 45 degree angles. The optical axis of the reflected light formed by the light emitted from the light source assembly 30 after being reflected by the filtering surface 421 extends toward the image reading region 50 and is close to the optical axis AC of the image reading element 20, so that the reading accuracy can be improved.
In some embodiments, the filtering surface 421 can intersect the optical axis AC of the image reading circle 20 and form a second set angle α2The intersection point may be located at the center of the filter surface 421, and it is understood that in other embodiments, it may not be limited to being located at the center of the filter surface 421, and the second set angle α is formed2The light emitted from the light source assembly 30 can be emitted onto the light-filtering surface 421, and can be reflected by the light-filtering surface 421 to the image reading area 50. in some embodiments, the second predetermined included angle α2Is acute, in particular it may be at an angle of 45 degrees.
In some embodiments, the optical axis BA of the light source module 30 can intersect the filtering surface 421 and form a third set angle α3The third set angle α3The angle of incidence of the light source assembly 30, in some embodiments, the third set angle α3Is acute and may be at an angle α with respect to the second set angle2Forming a complementary angle, which may be 45 degrees, the intersection of the optical axis BA of the light source module 30 and the light filtering surface 421 coincides with the intersection of the optical axis AC of the image reading element 20 and the light filtering surface 421, and the second set angle α is2Forming a complementary angle, the optical axis of the reflected light formed by the light emitted from the light source assembly 30 after being reflected by the filtering surface 421 can extend toward the image reading area 50 and substantially coincide with the optical axis AC of the image reading element 20, so as to improve the reading accuracyAnd (4) sex. The optical axis BD of the reflected light is closer to the optical axis AD of the image sensing element 20 than the conventional one (as shown in fig. 1 and 2), thereby facilitating accurate sensing.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. An image reading apparatus comprising a support (10), an image reading element (20) mounted on said support (10); the device is characterized by further comprising a light source assembly (30) arranged on the support (10) and a light filtering assembly (40) which is arranged on the support (10) and is opposite to the light source assembly (30);
the image reading element (20) forms an image reading area (50) in the reading direction thereof;
the light filtering component (40) comprises a light filtering surface (421), the light filtering surface (421) is intersected with the optical axis of the image reading element (20) and forms a second set included angle (α)2) The optical axis of the light source component (30) is intersected with the light filtering surface (421) to form a third set included angle (α)3)；
The light source component (30) emits light towards the light filtering surface (421), and the light is reflected by the light filtering surface (421) to form reflected light; the optical axis of the reflected light extends towards the image reading area (50) and is arranged close to the optical axis of the image reading element (20).
2. The image reading apparatus according to claim 1, wherein the intersection of the optical axis of the light source assembly (30) and the light filtering surface (421) coincides with the intersection of the optical axis of the image reading element (20) and the light filtering surface (421).
3. Image reading apparatus according to claim 2, wherein the second set angle (α)2) At a third set angle (α)3) Are complementary angles.
4. Image recognition device according to any one of claims 1 to 3, characterized in that the optical axis of the reflected light coincides with the optical axis of the image recognition element (20).
5. The image recognition apparatus according to any one of claims 1 to 3, wherein the light source assembly (30) comprises a light exit surface (331);
the light filtering surface (421) and the light emitting surface (331) form a first set included angle (α)1)。
6. The image reading apparatus according to claim 5, wherein the filter assembly (40) comprises a support member (41) disposed parallel to the light emitting surface (331), and a fourth set angle (α) disposed on the support member (41) and formed with the support member (41)4) The optical filter (42);
the light filtering surface (421) is arranged on the light filter (42).
7. The image reading apparatus according to claim 6, wherein the image reading element (20) comprises a barrel body (21), an induction chip (23) mounted in the barrel body (21), and an optical lens (22) mounted in the barrel body (21) in an induction direction of the induction chip (23);
the optical filter (42) is obliquely arranged on the end face of the lens barrel body (21) and forms a fifth set included angle (α) with the end face5)。
8. Image reading apparatus according to claim 7, wherein the first set angle (α)1) Is at 45 degreesAn angle;
and/or the second set angle (α)2) Is at an angle of 45 degrees;
and/or the third set angle (α)3) Is at an angle of 45 degrees;
and/or the fourth set angle (α)4) Is at an angle of 45 degrees;
and/or the fifth set angle (α)5) At an angle of 45 degrees.
9. Image recognition device according to any one of claims 1 to 3, characterized in that the support (10) comprises a bottom wall (11) and a side wall (12);
the image reading element (20) is mounted on the bottom wall (11);
the light source assembly (30) is arranged on the side wall (12) and comprises a hollow cylinder (31), a light emitting source (32) arranged in the cylinder (31), and a light condensing unit (33) arranged in the cylinder (31) and positioned in the light emitting direction of the light emitting source (32).
10. Image recognition apparatus according to claim 9, wherein the light-focusing unit (33) comprises a convex lens or a lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921207394.2U CN210166790U (en) | 2019-07-26 | 2019-07-26 | Image recognizing and reading equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921207394.2U CN210166790U (en) | 2019-07-26 | 2019-07-26 | Image recognizing and reading equipment |
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| CN210166790U true CN210166790U (en) | 2020-03-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110378163A (en) * | 2019-07-26 | 2019-10-25 | 深圳市民德电子科技股份有限公司 | A kind of image recognition device |
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- 2019-07-26 CN CN201921207394.2U patent/CN210166790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110378163A (en) * | 2019-07-26 | 2019-10-25 | 深圳市民德电子科技股份有限公司 | A kind of image recognition device |
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