CN216560302U - Contact image sensor - Google Patents
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- CN216560302U CN216560302U CN202122561904.XU CN202122561904U CN216560302U CN 216560302 U CN216560302 U CN 216560302U CN 202122561904 U CN202122561904 U CN 202122561904U CN 216560302 U CN216560302 U CN 216560302U
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Abstract
The utility model provides a contact image sensor. The contact image sensor includes: a frame; a light source structure disposed on the frame; the light beam conversion part is arranged on the frame, is positioned at one side of the light source structure and is used for converting the light beams emitted by the light source structure into parallel light beams; the light splitting part is arranged on the frame, the light splitting part and the light source structure are respectively positioned on two opposite sides of the light beam conversion part, and the light splitting part is used for splitting the parallel light beams into reflected light rays and transmitted light rays; the lens structure is used for converging light rays, the lens structure is arranged on the frame, the lens structure is positioned on one side of the light splitting part, the light splitting part is positioned on an extension line of an optical axis of the lens structure, and an included angle is formed between the light splitting part and the optical axis of the lens structure, so that the reflected light rays are perpendicularly incident into the object to be scanned and are perpendicularly incident into the lens structure after being reflected by the object to be scanned. The contact image sensor of the technical scheme of the utility model can improve the accuracy of identifying the scratch on the object to be scanned.
Description
Technical Field
The utility model relates to the technical field of image detection, in particular to a contact type image sensor.
Background
At present, two methods are mainly adopted in the field of industrial detection, one is an area array camera (CCD) and various light sources, and the other is a contact type image sensor. The contact type image sensor is linear scanning, and has the advantages of wide breadth, compact structure, space saving, 1:1 image and no distortion.
When the contact type image sensor scans metal parts with defects such as scratches on the surfaces, part of scanning light can perpendicularly irradiate into the surfaces of the metal parts, so that the scanning light can be perpendicularly reflected into the lens if the irradiated metal surfaces are smooth, and the scanning light can be reflected out at other angles if the scanning light irradiates into the scratches on the metal surfaces, so that the reflected light is difficult to enter the lens, and the scratches on the surfaces of the metal parts can be identified.
However, the prior art contact image sensor emits less scanning light beams perpendicularly incident on the object to be scanned, which results in a lower intensity of the light beams perpendicularly incident on the object to be scanned, and thus, the accuracy of detecting scratches on the metal surface is reduced.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a contact image sensor that can improve the accuracy of recognizing a scratch on an object to be scanned.
In order to achieve the above object, the present invention provides a contact image sensor comprising: a frame; a light source structure disposed on the frame; the light beam conversion part is arranged on the frame, is positioned at one side of the light source structure and is used for converting the light beams emitted by the light source structure into parallel light beams; the light splitting part is arranged on the frame, the light splitting part and the light source structure are respectively positioned on two opposite sides of the light beam conversion part, and the light splitting part is used for splitting the parallel light beams into reflected light rays and transmitted light rays; the lens structure is used for converging light rays, the lens structure is arranged on the frame, the lens structure is positioned on one side of the light splitting part, the light splitting part is positioned on an extension line of an optical axis of the lens structure, and an included angle is formed between the light splitting part and the optical axis of the lens structure, so that the reflected light rays are perpendicularly incident into the object to be scanned and are perpendicularly incident into the lens structure after being reflected by the object to be scanned.
Further, the beam conversion section includes: a main body; the tooth-shaped protrusions are arranged on one side, away from the light source structure, of the main body, the tooth-shaped protrusions are arranged around the center of the main body at intervals, and the tooth-shaped protrusions extend along the circumferential direction of the main body to form a ring shape.
Further, the beam conversion section is arranged in a vertical direction, and an optical axis of the light source structure is disposed perpendicular to the beam conversion section.
Further, the contact image sensor further comprises a light-transmitting plate arranged on the frame, an installation cavity is arranged on one side, facing the object to be scanned, of the frame, and the light-transmitting plate is used for packaging the light source structure, the light beam conversion part and the light splitting part in the installation cavity.
Further, the contact image sensor further comprises a light shielding structure, at least one side of the light transmitting plate is provided with the light shielding structure along the vertical direction, the light shielding structure is provided with a channel used for reflecting light, and the channel is arranged corresponding to the lens structure.
Further, the shading structure is an ink coating or shading cloth; or, along vertical direction, the relative both sides of light-passing board all are equipped with light-shielding structure.
Furthermore, the contact image sensor also comprises a light-gathering part, wherein the light-gathering part is used for gathering light beams emitted by the light source structure, and the light source structure, the light-gathering part, the light beam conversion part and the light splitting part are sequentially arranged at intervals along the propagation path of the light rays.
Further, the light source structure includes: a PCB board arranged on the frame; and the light sources are linearly arranged on the PCB.
Furthermore, the contact image sensor also comprises a scattering plate, the scattering plate is used for scattering light beams emitted by the light source, and the light source, the scattering plate, the light beam conversion part and the light splitting part are sequentially arranged at intervals along the propagation path of the light.
Further, the lens structures are arranged along the vertical direction, the contact image sensor further comprises a substrate and a photosensitive member for sensing the reflected light rays converged by the lens structures, and the photosensitive member is arranged on one side of the substrate, which faces the lens structures.
By applying the technical scheme of the utility model, the light beam conversion part is arranged between the light splitting part and the light source structure, so that a divergent light beam emitted by the light source structure can be converted into a parallel light beam, the parallel light beam irradiates on the light splitting part, then a part of the parallel light beam is reflected by the light splitting part to form a reflected light beam, the reflected light beam can vertically enter an object to be scanned, and when the reflected light beam enters the smooth surface of the object to be scanned, the reflected light beam can be reflected by the object to be scanned to vertically enter the lens structure; when the reflection ray shines into the mar or protruding on waiting to scan the thing, because of mar and bellied surface have the angle for waiting the smooth surface of scan thing, so the perpendicular light of shining into waiting to scan thing can not get into lens after mar or bellied surface reflection, like this, just so can discern mar or arch well, consequently, the contact image sensor of this embodiment is through setting up light beam conversion portion, can increase the parallel light beam who shines into light beam portion, can increase the intensity of the light beam of shining into light beam portion like this, thereby make more reflection ray shine into perpendicularly and wait to scan the thing, can improve the degree of accuracy of the mar on the discernment waiting to scan thing like this.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a contact image sensor according to a first embodiment of the present invention;
fig. 2 is a schematic view showing a configuration of a contact image sensor according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a contact image sensor according to a third embodiment of the present invention; and
fig. 4 is a schematic structural diagram of a contact image sensor according to a fourth embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a frame; 11. a mounting cavity; 2. a light source structure; 201. a PCB board; 202. a light source; 3. a light splitting part; 4. a light-transmitting plate; 41. a light shielding structure; 42. a channel; 5. a photosensitive member; 6. a substrate; 7. a lens structure; 8. an object to be scanned; 9. a light beam conversion section; 80. a light-condensing section; 81. a diffuser plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the contact image sensor according to the embodiments of the present invention is mainly suitable for surface detection of objects with good surface reflectivity, such as bright metal and glass, and accurate printed matter detection.
It should be noted that, in the embodiment of the present invention, the surface of the light splitting sheet is specially processed, and is generally formed by cross vacuum coating of silicon dioxide and titanium pentoxide, the silicon dioxide can effectively improve the transmittance of light, the titanium pentoxide has a very high refractive index, therefore, after vacuum coating is performed by using the two materials, an optical film in which the titanium pentoxide and the silicon dioxide exist simultaneously is formed on the surface of the glass, so that, when the probe beam emitted by the light source irradiates the surface of the light splitting sheet, a part of the probe beam is subjected to mirror reflection due to irradiation on the surface of the titanium pentoxide with the high refractive index, that is, the reflected light od in fig. 1; another part of the probe beam directly penetrates through the spectroscopic plate due to the irradiation on the surface of the silica having a smaller refractive index and irradiates the inner wall surface of the accommodating cavity opposite to the light source structure 2, i.e. the transmitted light oe in fig. 1.
Example one
As shown in fig. 1, a first embodiment of the present invention provides a contact image sensor. The contact image sensor includes a frame 10, a light source structure 2, a beam conversion section 9, a spectroscopic section 3, and a lens structure 7. Wherein the light source structure 2 is arranged on the frame 10; the light beam conversion part 9 is arranged on the frame 10, the light beam conversion part 9 is positioned at one side of the light source structure 2, and the light beam conversion part 9 is used for converting the light beam emitted by the light source structure into a parallel light beam; the light splitting part 3 is arranged on the frame 10, the light splitting part 3 and the light source structure 2 are respectively positioned at two opposite sides of the light beam conversion part 9, and the light splitting part 3 is used for splitting the parallel light beams into reflected light rays and transmitted light rays; the lens structure 7 is used for converging light rays, the lens structure 7 is arranged on the frame 10, the lens structure 7 is positioned on one side of the light splitting part 3, the light splitting part 3 is positioned on an extension line of an optical axis of the lens structure 7, and an included angle is formed between the light splitting part and the optical axis of the lens structure 7, so that the reflected light rays vertically enter the object to be scanned 8 and vertically enter the lens structure 7 after being reflected by the object to be scanned 8.
In the above technical solution, the frame 10 is used for supporting the light source structure 2, the light beam conversion part 9, the light splitting part 3 and the lens structure 7, so that the use reliability of the light beam conversion part 9, the light splitting part 3, the lens structure 7 and the light source structure 2 is improved, and the stable operation of the contact image sensor is ensured; the light beam conversion part 9 is arranged between the light splitting part 3 and the light source structure 2, so that divergent light beams emitted by the light source structure 2 can be converted into parallel light beams, the light intensity is stronger, the parallel light beams irradiate the light splitting part 3, then a part of the parallel light beams are reflected by the light splitting part 3 to form reflected light beams, and the specific arrangement mode of the light splitting part 3 can ensure that more reflected light beams vertically irradiate into the object 8 to be scanned, and when the reflected light beams irradiate into the smooth surface of the object 8 to be scanned, the reflected light beams can be reflected by the object 8 to be scanned and vertically irradiate into the lens structure 7; when reflection ray shines into the mar or protruding on waiting to scan the thing 8, because of mar and bellied surface have the angle for waiting the smooth surface of scan thing, so the perpendicular light of shining into waiting to scan thing 8 can not get into lens after mar or bellied surface reflection, and like this, just so can discern mar or arch well, and consequently, the contact image sensor of this embodiment is through setting up light beam conversion part 9, can increase the parallel light beam who shines into beam-splitting part 3, can increase the intensity of the light beam of shining into beam-splitting part 3 like this, thereby make more reflection ray shine into waiting to scan thing 8 perpendicularly, can improve the degree of accuracy of the mar on the discernment waiting to scan thing 8 like this, thereby ensure that imaging quality is better.
Specifically, in the embodiment of the present invention, the transmitted light is formed by transmitting another part of the parallel light beam through the light splitting part 3.
In the embodiment of the present invention, the light source structure 2 and the lens structure 7 are respectively located at two sides of the light splitting part 3, and the light splitting part 3 is disposed obliquely with respect to the optical axis of the lens structure 7. Therefore, the light beam emitted by the light source structure 2 can vertically enter the object to be scanned 8 through the light splitting part 3, and can vertically enter the lens structure 7 after being reflected, so that the subsequent accurate imaging is convenient.
Preferably, in the first embodiment of the present invention, the light splitting part 3 is a light splitting sheet for splitting the light beam into the refracted light and the reflected light.
In the first embodiment of the present invention, the light beam conversion part 9 includes a main body and a plurality of tooth-shaped protrusions; the plurality of tooth-shaped protrusions are arranged on one side, away from the light source structure 2, of the main body, the plurality of tooth-shaped protrusions are arranged at intervals around the center of the main body, and the tooth-shaped protrusions extend along the circumferential direction of the main body to form a ring shape.
Through the arrangement, the light beam emitted by the light source structure 2 is emitted from one side of the main body, which is away from the tooth-shaped bulge, and then is emitted from the tooth-shaped bulge, so that the light beam with divergence forms a parallel light beam after being refracted, and the intensity of the parallel light beam emitted into the light splitting part 3 is increased, so that the contact type image sensor can more accurately identify scratches or bulges on the object to be scanned 8.
Preferably, in the first embodiment of the present invention, the light beam conversion part 9 is a screw lens, i.e., a fresnel lens. Of course, in alternative embodiments, the light beam conversion part 9 may be other lenses that can convert a light beam having divergence into a parallel light beam.
As shown in fig. 1, in the first embodiment of the present invention, the light beam conversion part 9 is arranged in the vertical direction, and the optical axis of the light source 202 is disposed perpendicular to the light beam conversion part 9.
With the above arrangement, the optical axis of the light source structure 2 can be parallel to the optical axis of the light beam conversion portion 9 (screw lens), thereby enabling the screw lens to better convert the light beam emitted from the light source structure 2 into a parallel light beam.
Preferably, in the first embodiment of the present invention, the beam splitter and the screw lens have an included angle, which is preferably 45 °, so that the parallel light beam enters the beam splitter at an incident angle of 45 ° and is then reflected at an exit angle of 45 °, so that the reflected light beam can enter the object 8 to be scanned in a vertical direction, i.e., the reflected light beam enters the object 8 to be scanned perpendicularly, so as to scan the object 8 to be scanned better.
Of course, in an alternative embodiment not shown in the drawings, the included angle between the beam splitter and the screw lens may also range from 30 ° to 60 °, so that the arrangement direction of the light beam conversion part 9 changes with the change of the included angle, that is, the light beam conversion part 9 is no longer arranged along the vertical direction, and the light source structure 2 also changes with the change of the position of the light beam conversion part 9, as long as the reflected light can be vertically incident on the object 8 to be scanned.
As shown in fig. 1, in the first embodiment of the present invention, the contact image sensor further includes a light-transmitting plate 4 disposed on the frame 10, a mounting cavity 11 is disposed on a side of the frame 10 facing the object 8 to be scanned, and the light-transmitting plate 4 is used to encapsulate the light source structure 2, the light beam conversion unit 9 and the light splitting unit 3 in the mounting cavity 11.
Through the arrangement, the light-transmitting plate 4 can prevent dust or moisture from being attached to the light source structure 2, so that the image quality of a scanned image can be improved.
Specifically, in the first embodiment of the present invention, the parallel light beams converted by the light beam converting unit 9 enter the light splitting unit 3, and are reflected by the light splitting unit 3 to form the reflected light od, which is emitted in a direction perpendicular to the transparent plate 4 and vertically irradiated on the object 8 to be scanned.
Preferably, in the first embodiment of the present invention, the light-transmitting plate 4 may be made of glass or transparent plastic.
As shown in fig. 1, in the first embodiment of the present invention, the light source structure 2 includes a PCB board 201 and a plurality of light sources 202. Wherein, the PCB board 201 is disposed on the frame 10; the plurality of light sources 202 are linearly arranged on the PCB board 201.
Through the arrangement, the light source structure 2 can emit a plurality of light beams, so that the brightness of the light emitted by the light source structure 2 can be improved, the light intensity of the light source structure 2 is increased, the scanned image has enough brightness, and the use requirement of the scanned image is met.
Preferably, in the first embodiment of the present invention, the light source 202 may be an LED chip, which can emit light in any wavelength band.
Preferably, in the first embodiment of the present invention, the plurality of LED chips are linearly arranged along the length direction of the PCB 201, and the plurality of LED chips are linearly arranged along the width direction of the PCB 201, so that a surface light source can be formed to increase the intensity of emitted light.
As shown in fig. 1, in the first embodiment of the present invention, the lens structure 7 is arranged along the vertical direction, the contact image sensor further includes a substrate 6 and a photosensitive member 5 for sensing the reflected light converged by the lens structure 7, and the photosensitive member 5 is disposed on a side of the substrate 6 facing the lens structure 7.
With the above arrangement, the probe beam converged by the lens structure 7 can directly irradiate the photosensitive member 5, thereby converting the optical signal reflected by the object 8 to be scanned into an electronic signal.
Example two
As shown in fig. 2, a second embodiment of the present invention is different from the first embodiment in that the contact image sensor of the second embodiment of the present invention further includes a light shielding structure 41. Along the vertical direction, at least one side of the light-transmitting plate 4 is provided with a light shielding structure 41, and the light shielding structure 41 is provided with a channel 42 for passing through the reflected light, and the channel 42 is arranged corresponding to the lens structure 7.
Through the arrangement, the light shielding structure 41 can cover the light transmission plate 4 except the position where the light needs to be reflected, and can prevent partial divergent light beams emitted by the light source structure 2 from irradiating the object 8 to be scanned, so that the divergent light beams can be prevented from being incident into the lens structure 7 after being diffusely reflected by the object 8 to be scanned, and further, redundant useless stray light can be prevented from entering the lens structure 7, and thus, the scanning precision of the contact type image sensor can be effectively improved.
It should be noted that, in the second embodiment of the present invention, the channel 42 is disposed corresponding to the lens structure 7, which means that the optical axis of the lens structure 7 can pass through the channel 42. Specifically, the channel 42 is a through hole penetrating the light shielding structure 41. The optical axis of the lens arrangement 7 preferably coincides with the central axis of the through hole.
Preferably, in the second embodiment of the present invention, the light shielding structure 41 is an ink coating. Thus, by applying ink to the surface of the light-transmitting plate 4, unwanted stray light is prevented from entering the lens arrangement 7. Preferably, the ink coating is a black ink coating.
Of course, in an alternative embodiment not shown in the drawings, the light shielding structure 41 may also be a light shielding cloth, so that the light shielding cloth is directly covered on the surface of the lens structure 7.
As shown in fig. 2, in the second embodiment of the present invention, the light shielding structures 41 are disposed on two opposite sides of the light-transmitting plate 4 along the vertical direction.
With the above arrangement, the light transmittance of the covered portion of the light-transmitting plate 4 can be further reduced, so that the scanning accuracy of the contact image sensor can be further improved.
Other structures of the contact image sensor in the second embodiment of the present invention are the same as those in the first embodiment, and are not described herein again.
EXAMPLE III
As shown in fig. 3, a third embodiment of the present invention is different from the first embodiment in that the contact image sensor of the third embodiment further includes a light-condensing portion 80, the light-condensing portion 80 is used for condensing the light beam emitted by the light source structure 2, and the light source 202, the light-condensing portion 80, the light beam converting portion 9 and the light splitting portion 3 are sequentially arranged at intervals along the propagation path of the light beam.
In the above technical solution, the light condensing portion 80 is added between the light source structure 2 and the light splitting portion 3, so that the divergent light beam emitted from the light source structure 2 can be converged to reduce the divergence of the light beam, thereby improving the intensity of the light beam, and improving the utilization rate of the light beam emitted from the light source structure 2 to improve the scanning accuracy of the contact image sensor.
Preferably, in the third embodiment of the present invention, the light-gathering part 80 is a circular or semicircular or other linear convex lens, and is made of a transparent material, such as: and optically transparent materials such as glass, PMMA (polymethyl methacrylate), and PC (polycarbonate).
Other structures of the contact image sensor in the third embodiment of the present invention are the same as those in the first embodiment, and are not described herein again.
Example four
The light source structure 2 adopted in the first embodiment of the present invention includes a plurality of light sources 202 arranged linearly, because two adjacent light sources 202 are spaced apart from each other, and the larger the distance is, the fewer the number of light sources 202 in a limited space is, the lower the brightness of the light source structure 2 is, and the light sources 202 are arranged at intervals, so that the light source structure 2 is prone to uneven brightness, and therefore, the scanned image has uneven brightness.
In order to solve the problem of uneven brightness of an image formed by the light source structure 2, as shown in fig. 4, a fourth embodiment of the present invention is different from the first embodiment in that the contact image sensor further includes a scattering plate 81, the scattering plate 81 is used for scattering the light beam emitted by the light source structure 2, and the light source 202, the scattering plate 81, the light beam conversion part 9, and the light splitting part 3 are sequentially arranged at intervals along the propagation path of the light beam.
Among the above-mentioned technical scheme, increase the diffuser plate 81 between light source structure 2 and spectroscopic part 3, after the light that light source structure 2 sent got into diffuser plate 81, take place to emit diffuser plate 81 after the diffuse reflection, shine on spectroscopic part 3 to the light that makes light source structure 2 send is more even, thereby eliminates and makes light source structure 2 produce the uneven problem of luminance because of having certain distance between a plurality of light sources 202, and then eliminates the alternate stripe of light and shade because of the crest trough of array light source causes.
Other structures of the contact image sensor in the fourth embodiment of the present invention are the same as those in the first embodiment, and are not described herein again.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the light beam conversion part is arranged between the light splitting part and the light source structure, so that divergent light beams emitted by the light source structure can be converted into parallel light beams, the parallel light beams irradiate the light splitting part, then a part of the parallel light beams are reflected by the light splitting part to form reflected light rays, the reflected light rays can vertically enter an object to be scanned, and when the reflected light rays enter the smooth surface of the object to be scanned, the reflected light rays can be reflected by the object to be scanned to vertically enter the lens structure; when the reflection ray shines into the mar or protruding on waiting to scan the thing, because of mar and bellied surface have the angle for waiting the smooth surface of scan thing, so the perpendicular light of shining into waiting to scan thing can not get into lens after mar or bellied surface reflection, like this, just so can discern mar or arch well, consequently, the contact image sensor of this embodiment is through setting up light beam conversion portion, can increase the parallel light beam who shines into light beam portion, can increase the intensity of the light beam of shining into light beam portion like this, thereby make more reflection ray shine into perpendicularly and wait to scan the thing, can improve the degree of accuracy of the mar on the discernment waiting to scan thing like this.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A contact image sensor, comprising:
a frame (10);
a light source structure (2) arranged on the frame (10);
the light beam conversion part (9) is arranged on the frame (10), the light beam conversion part (9) is positioned on one side of the light source structure (2), and the light beam conversion part (9) is used for converting the light beam emitted by the light source structure (2) into a parallel light beam;
the light splitting part (3) is arranged on the frame (10), the light splitting part (3) and the light source structure (2) are respectively positioned on two opposite sides of the light beam conversion part (9), and the light splitting part (3) is used for splitting the parallel light beams into reflected light rays and transmitted light rays;
lens structure (7) for assemble light, lens structure (7) set up on frame (10), lens structure (7) are located one side of beam-splitting portion (3), just beam-splitting portion (3) are located on the extension line of the optical axis of lens structure (7), and with the contained angle has between the optical axis of lens structure (7), so that reflection light shines perpendicularly and waits into scanner (8) and warp it shines perpendicularly to wait to shine behind scanner (8) reflection lens structure (7).
2. The contact image sensor according to claim 1, wherein the beam conversion section (9) comprises:
a main body;
the tooth-shaped protrusions are arranged on one side, away from the light source structure (2), of the main body, the tooth-shaped protrusions are arranged around the center of the main body at intervals, and the tooth-shaped protrusions extend along the circumferential direction of the main body to form a ring shape.
3. The contact image sensor according to claim 1, wherein the light beam conversion section (9) is arranged in a vertical direction, and an optical axis of the light source structure (2) is disposed perpendicular to the light beam conversion section (9).
4. The contact image sensor according to any one of claims 1 to 3, further comprising a light-transmitting plate (4) disposed on the frame (10), wherein a side of the frame (10) facing the object (8) to be scanned is provided with a mounting cavity (11), and the light-transmitting plate (4) is used for packaging the light source structure (2), the light beam conversion part (9) and the light splitting part (3) in the mounting cavity (11).
5. The contact image sensor according to claim 4, further comprising a light shielding structure (41), wherein the light shielding structure (41) is disposed on at least one side of the light-transmitting plate (4) along a vertical direction, and the light shielding structure (41) has a channel (42) for passing the reflected light, and the channel (42) is disposed corresponding to the lens structure (7).
6. The contact image sensor according to claim 5, wherein the light shielding structure (41) is an ink coating or a light shielding cloth; or, along the vertical direction, the shading structure (41) is arranged on two opposite sides of the light-transmitting plate (4).
7. The contact image sensor according to any one of claims 1 to 3, further comprising a light-condensing portion (80), wherein the light-condensing portion (80) is configured to condense the light beam emitted from the light source structure (2), and the light source structure (2), the light-condensing portion (80), the light beam conversion portion (9) and the light splitting portion (3) are sequentially arranged at intervals along a propagation path of the light beam.
8. A contact image sensor according to any of claims 1 to 3, characterized in that the light source structure (2) comprises:
a PCB board (201) disposed on the frame (10);
a plurality of light sources (202) arranged linearly on the PCB board (201).
9. The contact image sensor according to claim 8, further comprising a diffusion plate (81), wherein the diffusion plate (81) is used for diffusing the light beam emitted from the light source (202), and the light source (202), the diffusion plate (81), the light beam conversion part (9) and the light splitting part (3) are sequentially arranged at intervals along a propagation path of the light beam.
10. A contact image sensor according to any of claims 1 to 3, wherein the lens structures (7) are arranged in a vertical direction, the contact image sensor further comprising a substrate (6) and a photosensitive member (5) for sensing the reflected light rays converged by the lens structures (7), the photosensitive member (5) being disposed on a side of the substrate (6) facing the lens structures (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122561904.XU CN216560302U (en) | 2021-10-22 | 2021-10-22 | Contact image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122561904.XU CN216560302U (en) | 2021-10-22 | 2021-10-22 | Contact image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216560302U true CN216560302U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122561904.XU Active CN216560302U (en) | 2021-10-22 | 2021-10-22 | Contact image sensor |
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| CN (1) | CN216560302U (en) |
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2021
- 2021-10-22 CN CN202122561904.XU patent/CN216560302U/en active Active
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