CN2681352Y - Image sensor - Google Patents
Image sensor Download PDFInfo
- Publication number
- CN2681352Y CN2681352Y CNU2003201190551U CN200320119055U CN2681352Y CN 2681352 Y CN2681352 Y CN 2681352Y CN U2003201190551 U CNU2003201190551 U CN U2003201190551U CN 200320119055 U CN200320119055 U CN 200320119055U CN 2681352 Y CN2681352 Y CN 2681352Y
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- CN
- China
- Prior art keywords
- imageing sensor
- light
- microlens array
- signal
- light receiving
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Abstract
The utility model relates to an image sensor which comprises a micro lens array, a plurality of prisms, a color filter array, a light receiving unit and a signal processing circuit board, wherein, the components are arranged one by one from top to bottom. Light is radiated to the light receiving after the light penetrates through the micro lens array, the prisms and the color filter array. The light receiving unit converts the received light signal to an electrical signal. The signal processing circuit board processes the electrical signal to form an image outputting signal. The image sensor has the advantages of simple structure and higher image absorbing quality by adopting the structure.
Description
[technical field]
The utility model is about a kind of imageing sensor, especially about a kind of imageing sensor that is used for numerical camera mould in mobile phone or the PDA portable electron devices such as (Personal Digital Assistant, personal digital assistants).
[background technology]
Recently, along with CPU (Central Processing Unit, central processing unit) the significantly improving of performance, image processing techniques develops rapidly, electronic installations such as mobile phone, PDA or computer have all had very high Digital Image Processing ability, and the image data transmission between it is also often carried out, and is also developed rapidly as the imageing sensor of image pick-up device thereupon.Along with electronic installations such as mobile phone, PDA are day by day popular, people are more and more to the application of image capture function, and are also more and more higher to the requirement of pickup image quality.
See also Fig. 1, the conventional images transducer mainly comprises over cap 10, microlens array 30, colorful optical filter array 50, light receiving unit 70 and signal processing circuit board 90, the setting of arranging successively from top to bottom of these each parts.Wherein, over cap 10 is positioned at the upper end of imageing sensor, generally adopts plate glass or transparent resin to make, and is not subjected to external force or pollutant effects in order to inner each assembly of protection imageing sensor.Microlens array 30 is the arrays that are arranged in two-dimensional space by a plurality of lenticules, and it can strengthen the light intensity that is incident to light receiving unit 70 light.But colorful optical filter array 50 filtering part incident lights, it generally includes red, green and blue filter or green grass or young crops, purple and yellow filter, this filter arrays pixel of corresponding light receiving unit 70 is respectively arranged, to obtain color information, coloured image can obtain by making up from all output signals of pixel.Light receiving unit 70 is made up of a plurality of pixel components of arranging in two-dimensional space, and each pixel is a photoelectric conversion component, and it converts the light signal that receives to the signal of telecommunication.Signal processing circuit board 90 is in order to driving pixel, and the signal of telecommunication that pixel produces is handled, and forms picture output signal.
During pickup image, light passes over cap 10, after microlens array 30 converges; pass colorful optical filter array 50; be incident to light receiving unit 70, light receiving unit 70 converts the light signal that receives to the signal of telecommunication, obtains picture output signal after signal processing circuit board 90 is handled.
Because the numerical camera mould in the portable electron devices such as mobile phone or PDA is small-sized, thereby its light path is also very short, make the angle of picture side's chief ray become big, cause the bigger light of part incident angle after microlens array 30 converges, be incident upon on the dead space of light receiving unit 70, the illumination of light receiving unit 70 fringe regions is reduced, cause the picture quality of numerical camera mould picked-up to reduce.
At the problems referred to above, be necessary to provide a kind of simple in structure, imageing sensor that the image capture quality is higher.
[utility model content]
The purpose of this utility model is to provide a kind of simple in structure, imageing sensor that the image capture quality is higher.
To achieve these goals, the utility model provides a kind of imageing sensor, comprises microlens array, a plurality of prism, light receiving unit and signal processing circuit board, the setting of arranging successively from top to bottom of these each parts.Light is incident on the light receiving unit after passing microlens array, prism, and light receiving unit converts the light signal that receives to the signal of telecommunication, and signal processing circuit board is handled the signal of telecommunication, forms picture output signal.
Compare existing imageing sensor, the utility model imageing sensor changes the optical path direction of the big light of incident angle by a plurality of prisms, makes in its active zone that is incident to light receiving unit, the light intensity of the light signal that light receiving unit receives is increased, thereby can improve its image quality.In addition, the utility model imageing sensor only increases a plurality of prisms, and structure is simpler.
[description of drawings]
Fig. 1 is the light path schematic diagram of conventional images transducer.
Fig. 2 is the light path schematic diagram of the utility model imageing sensor.
Fig. 3 is the schematic perspective view that the utility model imageing sensor removes over cap.
[embodiment]
See also Fig. 2, the utility model imageing sensor mainly comprises over cap 1, microlens array 3, a plurality of prism 4, colorful optical filter array 5, light receiving unit 7 and signal processing circuit board 9, the setting of arranging successively from top to bottom of these each parts.
Over cap 1 is positioned at the upper end of imageing sensor, generally adopts plate glass or transparent resin to make, and is immobilizated in inner each assembly of imageing sensor in order to protection and is not subjected to external force or pollutant effects.
Microlens array 3 is the arrays that are arranged in two-dimensional space by a plurality of lenticules, and it can strengthen the light intensity that is incident to light receiving unit 7 light.
Prism 4 is in order to change the optical path direction of incident ray, and it is a triangular prism in the present embodiment.One side 41 of this prism is in level, and bottom surface 42 is positioned at the imageing sensor inboard.The angle of this prism vertex angle can be set according to the maximum angle of deflection of the light that is incident to microlens array 3, makes the light that is positioned at this maximum angle of deflection scope after microlens array 3 and prism change light path, can be incident in the active zone of light receiving unit 7.Arranging of this prism decided according to the distribution of deflection light, and it can be close to above-mentioned microlens array 3 and be provided with.The angle of picture side's chief ray of general numerical camera mould is bigger, and it is generally bigger to make that the fringe region of light receiving unit receives the incidence angle of light, so prism mainly is arranged in the fringe region (consulting Fig. 3) of microlens array 3.
But colorful optical filter array 5 filtering part incident lights, it generally includes red, green and blue filter or green grass or young crops, purple and yellow filter, this filter arrays pixel of corresponding light receiving unit 7 is respectively arranged, to obtain color information, coloured image can obtain by making up from all output signals of pixel.
Light receiving unit 7 is made up of a plurality of pixel components of arranging in two-dimensional space, and each pixel is a photoelectric conversion component, and it converts the light signal that receives to the signal of telecommunication.Each pixel of common CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductors (CMOS)) imageing sensor comprises the photodiode and the CMOS transistor that carries out signal of telecommunication amplification and switch that carry out opto-electronic conversion.
Signal processing circuit board 9 comprises that be the A/D converter of digital signal and the digital signal processing unit that utilizes digital signal formation picture output signal in order to drive pixel with the drive circuit of picked up signal electric charge, in order to the switching signal electric charge.
During pickup image; light passes over cap 1; after microlens array 3 converges; part light can pass through prism 4; pass colorful optical filter array 5 then; be incident to light receiving unit 7, light receiving unit 7 converts the light signal that receives to the signal of telecommunication, obtains picture output signal after signal processing circuit board 9 is handled.
Be appreciated that the colorful optical filter array 5 of the utility model imageing sensor not only is confined to be arranged in the below of microlens array 3, also can be arranged in its top.In addition, if imageing sensor is not to be used for colour imaging, colorful optical filter array 5 can omit.
Claims (10)
1. an imageing sensor comprises microlens array, light receiving unit and signal processing circuit board, the setting of arranging successively from top to bottom of each parts, and it is characterized in that: this imageing sensor further comprises a plurality of prisms, it is positioned at the microlens array below.
2. imageing sensor as claimed in claim 1 is characterized in that: this imageing sensor further comprises an over cap, and it is positioned at the upper end of imageing sensor.
3. imageing sensor as claimed in claim 1 is characterized in that: described prism is a triangular prism, and the one side is in level, and the bottom surface is positioned at the imageing sensor inboard.
4. imageing sensor as claimed in claim 3 is characterized in that: described prism vertex angle is set according to the maximum angle of deflection of the light that is incident to microlens array.
5. imageing sensor as claimed in claim 3 is characterized in that: arranging of described prism decided according to the distribution of deflection light, and it is close to above-mentioned microlens array setting.
6. imageing sensor as claimed in claim 1 is characterized in that: this imageing sensor further comprises a colorful optical filter array, and it is positioned at above-mentioned microlens array below.
7. imageing sensor as claimed in claim 1 is characterized in that: this imageing sensor further comprises a colorful optical filter array, and it is positioned at above-mentioned microlens array top.
8. as claim 6 or 7 described imageing sensors, it is characterized in that: described colorful optical filter array comprises red, green and blue filter or green grass or young crops, purple and yellow filter.
9. imageing sensor as claimed in claim 1 is characterized in that: described light receiving unit is made up of a plurality of pixel components of arranging in two-dimensional space, and each pixel is a photoelectric conversion component.
10. imageing sensor as claimed in claim 1 is characterized in that: described signal processing circuit board comprises that be the A/D converter of digital signal and the digital signal processing unit that utilizes digital signal formation picture output signal in order to drive pixel with the drive circuit of picked up signal electric charge, in order to the switching signal electric charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201190551U CN2681352Y (en) | 2003-12-05 | 2003-12-05 | Image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201190551U CN2681352Y (en) | 2003-12-05 | 2003-12-05 | Image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681352Y true CN2681352Y (en) | 2005-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201190551U Expired - Lifetime CN2681352Y (en) | 2003-12-05 | 2003-12-05 | Image sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681352Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024305A (en) * | 2012-12-27 | 2013-04-03 | 上海集成电路研发中心有限公司 | Improved pixel array |
| CN104576631A (en) * | 2014-12-05 | 2015-04-29 | 复旦大学 | Photoelectric detection integrated chip |
| EP3166304A1 (en) * | 2015-11-05 | 2017-05-10 | Delphi Technologies, Inc. | Camera with light-guide array for camera automated vehicles |
| CN107920588A (en) * | 2015-08-14 | 2018-04-17 | 菲利普莫里斯生产公司 | Electrically operated smoking apparatus comprising the compact systems for the smoking product in identification device |
| CN112004011A (en) * | 2020-08-27 | 2020-11-27 | 北京三快在线科技有限公司 | Image acquisition method and device and light path conversion element |
-
2003
- 2003-12-05 CN CNU2003201190551U patent/CN2681352Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024305A (en) * | 2012-12-27 | 2013-04-03 | 上海集成电路研发中心有限公司 | Improved pixel array |
| CN103024305B (en) * | 2012-12-27 | 2018-05-29 | 上海集成电路研发中心有限公司 | Improved pel array |
| CN104576631A (en) * | 2014-12-05 | 2015-04-29 | 复旦大学 | Photoelectric detection integrated chip |
| CN107920588A (en) * | 2015-08-14 | 2018-04-17 | 菲利普莫里斯生产公司 | Electrically operated smoking apparatus comprising the compact systems for the smoking product in identification device |
| US11166494B2 (en) | 2015-08-14 | 2021-11-09 | Philip Morris Products S.A. | Electrically operated smoking device including a compact system for identifying smoking articles in the device |
| EP3166304A1 (en) * | 2015-11-05 | 2017-05-10 | Delphi Technologies, Inc. | Camera with light-guide array for camera automated vehicles |
| CN112004011A (en) * | 2020-08-27 | 2020-11-27 | 北京三快在线科技有限公司 | Image acquisition method and device and light path conversion element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131205 Granted publication date: 20050223 |