CN213126187U

CN213126187U - Image sensor with a plurality of pixels

Info

Publication number: CN213126187U
Application number: CN202022222608.2U
Authority: CN
Inventors: 曲涛
Original assignee: Weihai Hualing Opto Electronics Co Ltd
Current assignee: Weihai Hualing Opto Electronics Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-05-04
Anticipated expiration: 2030-09-30

Abstract

The utility model provides an image sensor. The image sensor includes the framework and sets up respectively on the framework: a plurality of lenses arranged at intervals along a scanning direction of the image sensor; the photoelectric conversion chips are respectively in one-to-one correspondence with the lenses and are arranged on the frame body, and the photoelectric conversion chips are arranged on one side, close to the frame body, of the lenses; the circuit board is arranged on the frame body, and the plurality of photoelectric conversion chips are respectively connected with the circuit board; the shading structures are multiple and correspond to the lenses one to one, and the shading structures are arranged along the circumferential direction of the corresponding lenses. The utility model provides an among the prior art image sensor performance poor problem.

Description

Image sensor with a plurality of pixels

Technical Field

The utility model relates to an image sensor equipment field particularly, relates to an image sensor.

Background

The mode of simulating biological vision imaging and processing information in the field of machine vision helps the robot to extract, process and understand the extracted information, thereby ensuring accurate, efficient and safe automatic operation. The importance of machine vision is mainly reflected in: guiding and positioning, appearance detection, high-precision monitoring and image identification.

In the existing device, when light emitted by the light source irradiates the original, the light can generate stray light scattered all around on the original, and because the shooting distance from the lens to the original is short and the irradiation angle of the light source is small, the stray light can directly enter the lens to form noise, so that the signal-to-noise ratio of an image is reduced, and even signal light is submerged in the noise.

Therefore, the prior art has the problem of poor use performance of the image sensor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an image sensor to solve the problem of poor performance of the image sensor in the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided an image sensor including a frame body and: a plurality of lenses arranged at intervals along a scanning direction of the image sensor; the photoelectric conversion chips are respectively in one-to-one correspondence with the lenses and are arranged on the frame body, and the photoelectric conversion chips are arranged on one side, close to the frame body, of the lenses; the circuit board is arranged on the frame body, and the plurality of photoelectric conversion chips are respectively connected with the circuit board; the shading structures are multiple and correspond to the lenses one to one, and the shading structures are arranged along the circumferential direction of the corresponding lenses.

Furthermore, one end of the light shielding structure, which is far away from the lens, and one end of the frame, which is far away from the lens, are located on the same plane.

Further, the shading structure is provided with an accommodating cavity, and the lens corresponding to the shading structure and the photoelectric conversion chip corresponding to the lens are both positioned in the accommodating cavity.

Further, the distance from one end of the light shielding structure far away from the photoelectric conversion chip to the lens is more than or equal to 2.5mm and less than or equal to 4 mm.

Further, a first mounting gap is formed between the inner side wall of the accommodating cavity of the shading structure and the corresponding lens.

Further, a second mounting gap is formed between the adjacent shading structures; and/or a plurality of shading structures are arranged at equal intervals.

Further, one side surface of the shading structure, which faces away from the corresponding lens, is provided with a light reflecting coating.

Further, the length of the lens in the optical axis direction is 2.5mm or more and 4mm or less.

Further, a distance L1 from the photoelectric conversion chip to one end of the frame away from the photoelectric conversion chip is less than 30 mm.

Further, an extending direction of the light shielding structure above the optical axis of the lens is perpendicular to a scanning direction of the image sensor.

Use the technical scheme of the utility model, image sensor in this application, including the framework and set up lens, photoelectric conversion chip, circuit board and the light-shielding structure in the framework respectively. The number of the lenses is multiple, and the lenses are arranged at intervals along the scanning direction of the image sensor; the photoelectric conversion chips are respectively in one-to-one correspondence with the lenses and are arranged on the frame body, and the photoelectric conversion chips are arranged on one side, close to the frame body, of the lenses; the circuit board is arranged on the frame body, and the plurality of photoelectric conversion chips are respectively connected with the circuit board; the shading structures are multiple, the shading structures are in one-to-one correspondence with the lenses respectively, and the shading structures are arranged along the circumferential direction of the corresponding lenses.

When the image sensor having the above-described configuration is used, since the image sensor according to the present application has the light shielding structure, stray light reflected from the original document to the lens can be shielded by the light shielding structure, and the image pickup effect of the lens on the original document can be effectively improved. Therefore, the image sensor in the application effectively solves the problem that the image sensor in the prior art is poor in use performance.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an image sensor according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a frame body; 20. a lens; 30. a photoelectric conversion chip; 40. a circuit board; 50. a light shielding structure.

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 accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that the use performance of an image sensor is poor in the prior art, the application provides an image sensor.

As shown in fig. 1, the image sensor of the present application includes a frame 10, and a lens 20, a photoelectric conversion chip 30, a circuit board 40, and a light shielding structure 50 respectively disposed on the frame 10. The lens 20 is multiple, and the multiple lenses 20 are arranged at intervals along the scanning direction of the image sensor; the photoelectric conversion chips 30 are multiple, the photoelectric conversion chips 30 are respectively in one-to-one correspondence with the lenses 20 and are arranged on the frame 10, and the photoelectric conversion chips 30 are arranged on one side of the lenses 20 close to the frame 10; the circuit board 40 is disposed on the frame 10, and the plurality of photoelectric conversion chips 30 are connected to the circuit board 40, respectively; the light shielding structures 50 are plural, the plural light shielding structures 50 respectively correspond to the plural lenses 20 one by one, and the light shielding structures 50 are arranged along the circumferential direction of the corresponding lenses 20.

When the image sensor having the above-described configuration is used, since the image sensor of the present application includes the light shielding structure 50, stray light reflected from the document to the lens 20 can be shielded by the light shielding structure 50, and the image pickup effect of the lens 20 on the document can be effectively improved. Therefore, the image sensor in the application effectively solves the problem that the image sensor in the prior art is poor in use performance.

Specifically, an end of the light shielding structure 50 away from the lens 20 is located on the same plane as an end of the frame 10 away from the lens 20. By such arrangement, the shading height of the shading structure 50 can be effectively increased, so that the shading effect of the shading structure 50 on stray light is effectively ensured.

In one embodiment of the present application, the light shielding structure 50 has a receiving cavity, and the lens 20 corresponding to the light shielding structure 50 and the photoelectric conversion chip 30 corresponding to the lens 20 are located in the receiving cavity.

Preferably, the distance from one end of the light shielding structure 50 away from the photoelectric conversion chip 30 to the lens 20 is greater than or equal to 2.5mm and less than or equal to 4 mm. By this arrangement, it is possible to further effectively prevent stray light from entering the lens 20 by the light shielding structure 50.

Optionally, a first mounting gap is provided between the inner side wall of the accommodating cavity of the light shielding structure 50 and the corresponding lens 20. By so setting, it is effectively ensured that light other than stray light can enter the lens 20 more easily, thereby ensuring the photographing effect of the lens 20 on the original.

Optionally, adjacent light shielding structures 50 have a second mounting gap therebetween.

In one embodiment of the present application, the plurality of light shielding structures 50 are disposed at equal intervals. By this arrangement, the light shielding structure 50 can be effectively prevented from affecting the non-corresponding lens 20, thereby further ensuring the original image capturing effect of the lens 20.

In a specific embodiment of the present application, a surface of the light shielding structure 50 facing away from the corresponding lens 20 is provided with a light reflecting coating.

Preferably, the length of the lens 20 in the optical axis direction is 2.5mm or more and 4mm or less.

Alternatively, the distance L1 from the photoelectric conversion chip 30 to the end of the frame 10 away from the photoelectric conversion chip 30 is less than 30 mm.

In one specific embodiment of the present application, the distance from the photoelectric conversion chip 30 to the original is less than 30 mm.

Specifically, the extending direction of the light shielding structure 50 above the optical axis of the lens 20 is perpendicular to the scanning direction of the image sensor. By this arrangement, it is possible to effectively prevent the light shielding structure 50 from affecting the image pickup of the original by the lens 20.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. the problem of poor use performance of an image sensor in the prior art is effectively solved;

2. the structure is simple, and the performance is stable;

3. the whole structure is more compact.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

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

1. An image sensor, comprising a frame body (10) and, provided on the frame body (10), respectively:

a plurality of lenses (20), wherein the lenses (20) are arranged at intervals along the scanning direction of the image sensor;

the photoelectric conversion chips (30) are arranged in a plurality of the photoelectric conversion chips (30), the photoelectric conversion chips (30) are respectively in one-to-one correspondence with the lenses (20) and are arranged on the frame body (10), and the photoelectric conversion chips (30) are arranged on one side, close to the frame body (10), of the lenses (20);

a circuit board (40), wherein the circuit board (40) is arranged on the frame body (10), and the plurality of photoelectric conversion chips (30) are respectively connected with the circuit board (40);

the shading structure (50) is multiple, the shading structure (50) is respectively in one-to-one correspondence with the lenses (20), and the shading structure (50) is arranged along the circumferential direction of the corresponding lenses (20).

2. The image sensor according to claim 1, wherein an end of the light shielding structure (50) away from the lens (20) is in the same plane as an end of the frame body (10) away from the lens (20).

3. The image sensor according to claim 1, wherein the light shielding structure (50) has a receiving cavity, and the lens (20) corresponding to the light shielding structure (50) and the photoelectric conversion chip (30) corresponding to the lens (20) are both located in the receiving cavity.

4. The image sensor according to claim 3, wherein a distance from an end of the light shielding structure (50) away from the photoelectric conversion chip (30) to the lens (20) is 2.5mm or more and 4mm or less.

5. The image sensor according to claim 3, wherein a first mounting gap is provided between an inner side wall of the receiving cavity of the light shielding structure (50) and the corresponding lens (20).

6. The image sensor of claim 1,

a second mounting gap is formed between the adjacent shading structures (50); and/or

The plurality of light shielding structures (50) are arranged at equal intervals.

7. An image sensor as claimed in claim 1, characterized in that a surface of the light shielding structure (50) facing away from the corresponding lens (20) is provided with a light-reflecting coating.

8. The image sensor according to any one of claims 1 to 7, wherein a length of the lens (20) in the optical axis direction is 2.5mm or more and 4mm or less.

9. The image sensor according to any one of claims 1 to 7, wherein a distance L1 from the photoelectric conversion chip (30) to an end of the frame body (10) away from the photoelectric conversion chip (30) is less than 30 mm.

10. The image sensor according to any one of claims 1 to 7, wherein the extension direction of the light shielding structure (50) above the optical axis of the lens (20) is perpendicular to the scanning direction of the image sensor.