CN201869276U - Contact image sensor - Google Patents
Contact image sensor Download PDFInfo
- Publication number
- CN201869276U CN201869276U CN201020641164XU CN201020641164U CN201869276U CN 201869276 U CN201869276 U CN 201869276U CN 201020641164X U CN201020641164X U CN 201020641164XU CN 201020641164 U CN201020641164 U CN 201020641164U CN 201869276 U CN201869276 U CN 201869276U
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- Prior art keywords
- groove
- image sensor
- light
- glass plate
- lens
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- 239000011521 glass Substances 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000005693 optoelectronics Effects 0.000 claims description 14
- 206010003084 Areflexia Diseases 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 5
- 230000003760 hair shine Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model relates to an image reading device, in particular to a contact image sensor capable of preventing light reflection. The contact image sensor comprises a frame, a light source, a lens, a photoelectric conversion chip, a sensor substrate and a glass plate which is used for carrying an original manuscript. The contact image sensor is characterized in that a groove is arranged on the surface of the glass plate and a non-reflective film is arranged on the surface of the bottom of the groove. Since the non-reflective film is arranged on the surface of the bottom of the groove of the glass plate, the contact image sensor has the advantages that light can only be transmitted and cannot be reflected when the light penetrates through the surface of the groove of the glass plate, light losses caused by reflection can be effectively reduced, the purity and the intensity of light signals can be improved, light utilization ratio can be effectively improved and signal interference caused by light reflection can be effectively reduced.
Description
Technical field
The utility model relates to a kind of image read-out, the unreflected contact-type image sensor of specifically a kind of light.
Background technology
Fig. 1 is the sectional drawing of existing contact-type image sensor, mark among the figure: the 1st, the glass plate of lift-launch original copy, the 7th, illuminating source, the 6th, lens, the 5th, the opto-electronic conversion chip of receiver lens 6 light that converges, the 4th, carry the sensor base plate of the opto-electronic conversion chip 5 be arranged in a straight line, the 3rd, hold the framework of light source 7, lens 6, sensor base plate 4 and glass plate 1.
In above-mentioned contact-type image sensor, the light that light source 7 sends, see through glass plate 1, shine on the original copy (not drawing among the figure) of outside, literal black region light on the original copy is absorbed, and in other white undercolor region of original copy, light almost 100% is reflected, these reverberation pass glass plate 1 again, collected the photosensitive area that shines the opto-electronic conversion chip 5 on the sensor base plate 4 by lens 6, opto-electronic conversion chip 5 is to carry out opto-electronic conversion by the many photosensitive areas and the light that can will shine each photosensitive area, and the drive circuit of signal output is formed, the light that receives converts the signal of telecommunication to after overdrive circuit output is outwards exported as image (literal) information.Original copy constantly moves, and the image information of being put down in writing on it (literal) will be read continuously.
In the above-mentioned contact-type image sensor, when passing glass plate 1 surface, have part light and returned, can cause the part light loss by reflection of glass surface from the light of original copy reflection; In addition, a part of light in the light that is reflected by glass plate shines original copy surface and other body surface again, and this part light through original copy and the reflection of other objects, shines glass surface more once more, so go round and begin again, can cause certain interference former light signal purity.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and reduces light loss and reduce the contact-type image sensor that light signal disturbs.
The utility model can reach by following measure.
A kind of contact-type image sensor comprises the glass plate of framework, illuminating source, lens, opto-electronic conversion chip, sensor base plate and lift-launch original copy being characterised in that glass pane surface is provided with groove that the bottom portion of groove surface is provided with non reflecting film.
Groove described in the utility model is located at the glass plate upper surface directly over the lens, and the non reflecting film on bottom portion of groove surface can be one deck, also can be multilayer, and the width of groove is equal to or greater than the width of lens.
Glass pane surface groove two sides and glass surface angle can be set arbitrarily according to the paper feed needs in the utility model, and glass groove two sides can be the planes, also can be the ripple glaze shape.
The beneficial effects of the utility model are, owing to be provided with non reflecting film, so light can not reflect, can improve the utilance of light when seeing through glass surface, also can reduce the interference of reverberation to former light.Because glass surface is provided with groove, non reflecting film is located at bottom portion of groove, so can not cause wearing and tearing to non reflecting film during paper feed, plays a protective role.Because glass groove two sides are the ripple glaze shape, so can reduce paper feed frictional force, effectively solve the problem of paperboard in the paper feed process.
Description of drawings:
Fig. 1 is existing contact-type image sensor sectional drawing.
Fig. 2 is a sectional drawing of the present utility model.
Fig. 3, Fig. 4 are sectional drawings of the present utility model.
Mark among the figure: glass plate 1, non reflecting film 2, framework 3, sensor base plate 4, opto-electronic conversion chip 5, lens 6, illuminating source 7.
Embodiment:
Below in conjunction with drawings and Examples the utility model is further described:
As shown in Figure 2, a kind of contact-type image sensor, the glass plate 1 that comprises framework 3, illuminating source 7, lens 6, sensor base plate 4, opto-electronic conversion chip 5 and lift-launch original copy, the structure and the annexation of framework 3, illuminating source 7, lens 6, sensor base plate 4, opto-electronic conversion chip 5 are same as the prior art, this does not give unnecessary details, glass plate 1 surface that is characterised in that of the present utility model is provided with groove, groove floor is provided with non reflecting film 2, this reality and novel described groove are located at glass plate 1 surface directly over the lens 6, and the width of groove is not less than the width of lens 6.
The groove side can be the plane that is various angles with glass surface, also can be to be the ripple glaze shape.The non reflecting film 2 of bottom portion of groove can be set to the light of specific wavelength is played specific areflexia effect, and the quantity of non reflecting film can be arranged to one or more layers.
Embodiment 1: as shown in Figure 3, a kind of contact-type image sensor, comprise framework 3, illuminating source 7, lens 6, sensor base plate 4, the glass plate 1 of opto-electronic conversion chip 5 and lift-launch original copy, framework 3, illuminating source 7, lens 6, sensor base plate 4, the structure and the annexation of opto-electronic conversion chip 5 are same as the prior art, this does not give unnecessary details, present embodiment is characterised in that glass plate 1 surface is provided with groove, groove floor is provided with one deck non reflecting film 2, groove is located at the upper surface of the glass plate 1 directly over the lens 6, the width of groove equals the width (diameter) of lens 6, and the groove side is the plane.
Embodiment 2: as shown in Figure 4, a kind of contact-type image sensor, comprise framework 3, illuminating source 7, lens 6, sensor base plate 4, the glass plate 1 of opto-electronic conversion chip 5 and lift-launch original copy, framework 3, illuminating source 7, lens 6, sensor base plate 4, the structure and the annexation of opto-electronic conversion chip 5 are same as the prior art, this does not give unnecessary details, present embodiment is characterised in that glass plate 1 surface is provided with groove, groove floor is provided with two-layer non reflecting film 2, groove is located at the upper surface of the glass plate 1 directly over the lens 6, the width of groove is greater than the width of lens 6, the groove side becomes the ripple glaze shape, the ripple glaze side can make paper feed more smooth and easy, effectively reduces frictional force and static content.
Claims (5)
1. contact-type image sensor comprises the glass plate of framework, illuminating source, lens, opto-electronic conversion chip, sensor base plate and lift-launch original copy it is characterized in that glass pane surface is provided with groove that glass bottom portion of groove surface is provided with non reflecting film.
2. a kind of contact-type image sensor according to claim 1 is characterized in that described groove is located on the glass plate directly over the lens.
3. a kind of contact-type image sensor according to claim 1 is characterized in that the width of groove is not less than the width of lens.
4. a kind of contact-type image sensor according to claim 1 is characterized in that glass plate groove two sides are the ripple glaze shape.
5. a kind of contact-type image sensor according to claim 1 is characterized in that the non reflecting film of glass bottom portion of groove can play specific areflexia effect to the light of specific wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020641164XU CN201869276U (en) | 2010-12-03 | 2010-12-03 | Contact image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020641164XU CN201869276U (en) | 2010-12-03 | 2010-12-03 | Contact image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201869276U true CN201869276U (en) | 2011-06-15 |
Family
ID=44140418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020641164XU Expired - Fee Related CN201869276U (en) | 2010-12-03 | 2010-12-03 | Contact image sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201869276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990052A (en) * | 2010-12-03 | 2011-03-23 | 威海华菱光电有限公司 | Contact type image sensor |
| WO2014015595A1 (en) * | 2012-07-27 | 2014-01-30 | 威海华菱光电股份有限公司 | Contact type image sensor, image and text processing system and processing method |
-
2010
- 2010-12-03 CN CN201020641164XU patent/CN201869276U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990052A (en) * | 2010-12-03 | 2011-03-23 | 威海华菱光电有限公司 | Contact type image sensor |
| CN101990052B (en) * | 2010-12-03 | 2015-12-02 | 威海华菱光电股份有限公司 | A kind of contact-type image sensor |
| WO2014015595A1 (en) * | 2012-07-27 | 2014-01-30 | 威海华菱光电股份有限公司 | Contact type image sensor, image and text processing system and processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WEIHAI HUALING OPTO-ELECTRONICS CO., LTD. Free format text: FORMER NAME: WEIHAI HUALING OPTOELECTRONIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 264209 Weihai high tech Industrial Development Zone, Shandong Torch Road, No. 159 Patentee after: Weihai Hualing Opto-electronics Co.,Ltd. Address before: 264209 Torch Road, Weihai hi tech Industrial Development Zone, Shandong, Weihai 159, China Patentee before: Weihai Hualing Optoelectronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20181203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |