CN206077526U - A kind of improved dual-side image acquisition device - Google Patents
A kind of improved dual-side image acquisition device Download PDFInfo
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- CN206077526U CN206077526U CN201620881284.4U CN201620881284U CN206077526U CN 206077526 U CN206077526 U CN 206077526U CN 201620881284 U CN201620881284 U CN 201620881284U CN 206077526 U CN206077526 U CN 206077526U
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- virtual image
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- acquisition device
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Abstract
The utility model provides a kind of improved dual-side image acquisition device, by the optical axis of camera is overlapped with the center vertical line of the part virtual image to be scanned in speculum setting, simultaneously, by light source be arranged on camera, camera in speculum formed first virtual image, first virtual image in light-transmitting plate into second virtual image field range outside, avoid light source and cause speck when shooting, it is ensured that the uniformity of illumination during shooting image.
Description
Technical field
The utility model is related to a kind of dual-side image acquisition device, particularly a kind of improved dual-side image acquisition device,
Effectively solve pattern distortion, the problems such as uneven illumination is even.
Background technology
When miscellaneous service is handled in the places such as financial institution, customs, bureau in charge of entry and exit visas, it is often necessary to obtain identity card,
The positive and negative image of the certificates such as bank card, Citizen Card Item and business card, file etc..Existing scanning device is " line scanning ", passes through
Actuated element or drawing element drive part to be scanned and photoelectric effect element relative motion, are finally completed the acquisition of face image, this
Kind of mode more takes, and the smoothness of actuated element or drawing element is required it is higher, situations such as easily there is paperboard.It is box
Document shooting apparatus are a kind of novel devices that can meet quick, easy Digital manufacturing work.But current on the market big
In most box-type document shooting instruments, the optical axis of taking module is all perpendicular to corresponding high transparency panel surface, therefore no matter adopts
, all there is transparent panel surface source of light strong reflection interference digitlization taking module normal work in which kind of light source, this is asked
Topic is especially serious in the system of double photographing module/panels.
Whole design for optical system method of the notification number for a kind of box-type document shooting instrument of CN102183839A, by inciting somebody to action
Light source is placed in transparent panel side, the projector distance of increase light source to transparent panel edge and reduces light source to transparent panel
Solving light source strong reflection to digitizing the interference problem of photographing module, this is also current to vertical range (reduce light source inclination angle)
Box-type document shooting instrument solves the common method of illumination uniformity.But dual-side image acquisition device is compared to one side document shooting apparatus
Increasingly complex, if equally adopting the program, device volume greatly increase, particularly the dual-side image for certificate etc. is obtained
Device, it is often necessary to be embedded in other all-in-ones, volume is crossed conference and hinders the flexible integrated of the device.Application No.
A kind of dual-side image acquisition device of 201610020453.X, there is provided a kind of while obtaining the dual-side image of certificate, file etc.
Device, but for how solving pattern distortion, the problems such as uneven illumination is even, do not refer in scheme.
The content of the invention
In order to overcome the deficiencies in the prior art, dress is obtained based on a kind of dual-side image of Application No. 201610020453.X
Put, the utility model provides a kind of improved dual-side image acquisition device, arranged by the position of camera and light source, solve
Pattern distortion, the problems such as uneven illumination is even.
A kind of improved dual-side image acquisition device described in the utility model, including casing, for placing part to be scanned
Light-transmitting plate, for treating the speculum of scanned copy imaging, for shoot in speculum the camera of the part virtual image to be scanned and
For irradiating the light source of part to be scanned, it is characterised in that in the optical axis and speculum of the camera in the part virtual image to be scanned
Heart vertical line overlaps, and described light source is arranged on camera, camera first virtual image, first virtual image formed by speculum saturating
In light flat board into second virtual image field range outside.By by the part virtual image to be scanned in the optical axis of camera and speculum
Center vertical line overlaps and arranges, and overcomes camera and is limited by many factors such as camera site, direction and space sizes, camera
It is inconvenient to obtain image perpendicular to the plane that is taken, and the distortion for producing, meanwhile, by light source is arranged on camera, shooting
Head in speculum formed first virtual image, first virtual image in light-transmitting plate into second virtual image field range outside, keep away
Exempt from light source and cause speck when shooting.
The utility model can be further limited and perfect by following technical measures：
As a kind of technical scheme, diffusing reflection lampshade before described light source, is provided with, by increasing diffusing reflection lamp before light source
Cover, not only increases the uniformity of illumination, and avoiding dazzle, local excessive exposure etc. affects camera to obtain the quality of image
Problem.
Used as a kind of technical scheme, described casing inner surface is provided with white diffusing reflection coating, and the light that light source sends is passed through
After the multiple diffusing reflection of the diffusing reflection coating of shell inner surface, illumination is more uniform.
In sum, the utility model discloses a kind of improved dual-side image acquisition device, in original dual-side image
On the basis of acquisition device is obtained, by the optical axis of camera is overlapped with the center vertical line of the part virtual image to be scanned in speculum setting,
The aberration problems of shooting image are solved, meanwhile, by light source is arranged on camera, camera formed the in speculum
One virtual image, first virtual image in light-transmitting plate into second virtual image field range outside, it is to avoid light source causes when shooting
Speck, it is ensured that the uniformity of illumination during shooting image.This programme is not changing the knot of original dual-side image acquisition device completely
On the basis of structure and volume, the quality for obtaining image is improved, it is simple.
【Description of the drawings】
The sectional view of Fig. 1 the utility model embodiment 1
The camera position schematic diagram of Fig. 2 the utility model embodiment 1
The light source position schematic diagram of Fig. 3 the utility model embodiment 1
1- casings；2- light-transmitting plates；3- speculums；4- cameras；5- light sources；First virtual images of 6-；Second virtual images of 7-；8- is treated
Scanned copy；9- diffusing reflection lampshades
【Specific embodiment】
Embodiment 1
As shown in figure 1, dual-side image acquisition device includes disclosed in the present embodiment：Casing 1, light-transmitting plate 2, speculum 3,
Camera 4, light source 5 and diffusing reflection lampshade 9, wherein, the center of the virtual image of part to be scanned 8 in the optical axis and speculum 3 of camera 4
Vertical line overlaps, and light source 5 is arranged on camera 4, camera 4 first virtual image 6, first virtual image 6 formed by speculum 3 in printing opacity
In flat board 2 into second virtual image 7 field range outside.
Claims (3)
1. a kind of improved dual-side image acquisition device, including casing (1), for placing the light-transmitting plate of part to be scanned (8)
(2), for treating the speculum (3) that scanned copy (8) is imaged, for shooting the shooting of part (8) the to be scanned virtual image in speculum (3)
Head (4) and the light source (5) for irradiating part to be scanned (8), it is characterised in that the optical axis of the camera (4) and speculum (3)
In the center vertical line of part (8) the to be scanned virtual image overlap, described light source (5) is arranged on camera (4), camera (4) in reflection
In mirror (3) formed first virtual image (6), first virtual image (6) in light-transmitting plate (2) into second virtual image (7) field range
Outside.
2. a kind of improved dual-side image acquisition device as claimed in claim 1, it is characterised in that before described light source (5)
It is provided with diffusing reflection lampshade (9).
3. a kind of improved dual-side image acquisition device as claimed in claim 1, it is characterised in that in described casing (1)
Surface is provided with white diffusing reflection coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620881284.4U CN206077526U (en) | 2016-08-16 | 2016-08-16 | A kind of improved dual-side image acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620881284.4U CN206077526U (en) | 2016-08-16 | 2016-08-16 | A kind of improved dual-side image acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206077526U true CN206077526U (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620881284.4U Active CN206077526U (en) | 2016-08-16 | 2016-08-16 | A kind of improved dual-side image acquisition device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206077526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113766218A (en) * | 2021-09-14 | 2021-12-07 | 北京集创北方科技股份有限公司 | Position detection method for optical lens, electronic device, and storage medium |
-
2016
- 2016-08-16 CN CN201620881284.4U patent/CN206077526U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113766218A (en) * | 2021-09-14 | 2021-12-07 | 北京集创北方科技股份有限公司 | Position detection method for optical lens, electronic device, and storage medium |
| CN113766218B (en) * | 2021-09-14 | 2024-05-14 | 北京集创北方科技股份有限公司 | Position detection method of optical lens, electronic device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 310012 Zhejiang Hangzhou Xihu District Wensanlu Road 90 71 Building 5 East 505-508, West 501-508 room Patentee after: MIAXIS Biometrics Co., Ltd. Address before: 310012 A1201-A1204 12 room, science and technology mansion, 90 East Wensanlu Road Software Park, Wensanlu Road, Hangzhou, Zhejiang. Patentee before: MIAXIS Biometrics Co., Ltd. |
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| CP02 | Change in the address of a patent holder |