CN201974818U - Optical fingerprint gatherer - Google Patents
Optical fingerprint gatherer Download PDFInfo
- Publication number
- CN201974818U CN201974818U CN201020650174XU CN201020650174U CN201974818U CN 201974818 U CN201974818 U CN 201974818U CN 201020650174X U CN201020650174X U CN 201020650174XU CN 201020650174 U CN201020650174 U CN 201020650174U CN 201974818 U CN201974818 U CN 201974818U
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- prism
- fingerprint
- collecting plate
- housing
- optical fingerprint
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Abstract
The utility model discloses an optical fingerprint gatherer comprising a cylindrical housing (7), a triple prism (1) arranged inside one end of the housing, a positioning strip (8) arranged upon the inner wall of the housing for limiting the position of the triple prism, a convex lens (4) arranged inside the housing, a fingerprint-collecting plate (3) arranged at the other end of the housing, a fixing cover (5) in clamping connection with the housing for fixing the triple prism, and a controller mainboard (2) for processing the data of the fingerprint-collecting plate. The triple prism has inclined plane outwardly placed, one waist plane vertically placed while the other waist plane horizontally placed, with the horizontal waist plane tightly pressed against a backlight board (6). Compared with the prior art, the utility model, with reasonable structure design, allows the rapid and convenient replacement of the triple prism of an image-inputting device, thereby facilitating maintenance and effectively prolonging the service lifetime of the whole gatherer.
Description
Technical field
The utility model relates to optical identifying apparatus, relates in particular to a kind of optical fingerprint collector of being convenient to change prism.
Background technology
Fingerprint capturer is the input media of fingerprint recognition system, can be widely used in every field such as fingerprint entrance guard system, fingerprint attendance system, personal information management system.For improving the sharpness of fingerprint recognition, adopt optical fingerprint collector usually.
Existing optical finger print acquisition module, generally all be to utilize the collection of total-reflection type light path, itself and principle are, utilize the total internal reflection characteristic of optical prism imaging surface, at the fingerprint recess, incident light carries out total internal reflection at imaging surface, at the fingerprint protuberance, some part of incident light is absorbed and from the scattering of fingerprint protuberance, thereby fingerprint protuberance that will be darker differentiates with brighter fingerprint recess.In reality was used, long-term use can cause the damage or the wearing and tearing of prism, and then makes image acquisition fuzzyyer, and module is refused to recognize rate and uprised, and all was that prism is firmly fixing in the existing product, was difficult to change.Because prism is a consumable accessory,, need a kind of optical fingerprint collector of being convenient to change prism of design for prolonging the serviceable life of fingerprint capturer.
The utility model content
The utility model is to solve the problem that existing fingerprint capturer is changed wearing and tearing prism difficulty, proposes a kind of fingerprint capturer of being convenient to change prism.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is: a kind of optical fingerprint collector comprises: thus the shell of tubular, be located at prism in shell one end, be located at outer casing inner wall with positioning strip, the convex lens of being located at enclosure that limits the prism position, the fingerprint collecting plate of being located at the shell other end, with the controller mainboard of shell clamping with the securing fixed cover of prism, processing fingerprint collecting plate data; Described prism inclined-plane is outside, and a central plane is vertical, and another central plane level is close to backlight on this horizontal central plane.
The central plane that described fingerprint collecting plate is vertical with described prism is 5 degree inclination angles.
Described fixed cover is the middle framework that has window.
Described fingerprint collecting plate can be CMOS fingerprint collecting plate.
Described controller mainboard can be the dsp controller mainboard.
Compared with prior art, the utility model can conveniently be changed the image input device prism by reasonable structural design, makes easy to maintenance fast, has prolonged the machine life of collector effectively.
Description of drawings
Below in conjunction with drawings and Examples the utility model is made detailed explanation, wherein:
Fig. 1 is the side schematic view of the utility model preferred embodiment;
Fig. 2 is the side sectional view of the utility model preferred embodiment;
Fig. 3 is the front schematic view of the utility model preferred embodiment.
Embodiment
The utility model discloses optical fingerprint collector, referring to Fig. 1,2, thus it comprise tubular shell 7, be located at prism 1 in shell one end, be located at outer casing inner wall with positioning strip 8, the convex lens 4 of being located at enclosure that limits the prism position, the fingerprint collecting plate 3 of being located at the shell other end, with the shell clamping with the securing fixed cover 5 of prism, handle the controller mainboard 2 of fingerprint collecting plate data; Described prism inclined-plane is outside, and a central plane is vertical, and another central plane level is close to backlight 6 on this horizontal central plane.
Human finger places the prism inclined-plane during use, backlight 6 rays of prism below, the fingerprint image reflection is by the convex lens 4 defocused fingerprint collecting plates 3 that are positioned, collection plate 3 is converted into the high-low level signal with optical signalling and is sent to controller mainboard 2, the controller mainboard is made the identification and the processing of finger print information, after the computing, the requirement according to host computer is sent to host computer by analysis.
In preferred embodiment, the central plane that fingerprint collecting plate 3 is vertical with described prism is 5 degree inclination angles.
Referring to Fig. 3, fixed cover 5 is the middle framework that has window, fixed cover 5 and shell clamping, thus prism is pressed on the positioning strip 8.The prism inclined-plane is exposed at fixed cover window place, touches for the people.Described fingerprint collecting plate 3 is a CMOS fingerprint collecting plate.Described controller mainboard 2 is the dsp controller mainboard.Dsp controller mainboard 2 is connected by 15P FPC line with CMOS base plate collector 3.The interface that dsp controller mainboard 2 leaves 6P uses for host computer, is used for control module power supply optical fingerprint collector shell 7 and is inverted and transmits data.When prism 1 has wearing and tearing, when needing to change, can take off fixed cover 5 by hand, will take off old prism 1, new prism is placed, be stuck in optical fingerprint collector shell 7 interior getting final product with fixed cover 5 then.
Better embodiment of the present utility model has more than been described, but the those of skill in the art in the present technique field are to be understood that, these only illustrate, and can make numerous variations or modification to these embodiments, and not deviate from principle of the present utility model and essence.The scope that all belongs to the utility model protection.
Claims (5)
1. optical fingerprint collector is characterized in that comprising: the shell of tubular (7), be located at prism (1) in shell one end, be located at outer casing inner wall with the positioning strip (8), the convex lens (4) of being located at enclosure that limit the prism position, be located at the shell other end fingerprint collecting plate (3) thereby, with the shell clamping with the securing fixed cover of prism (5), handle the controller mainboard (2) of fingerprint collecting plate data; Described prism inclined-plane is outside, and a central plane is vertical, and another central plane level is close to backlight (6) on this horizontal central plane.
2. optical fingerprint collector as claimed in claim 1 is characterized in that: the central plane that described fingerprint collecting plate (3) is vertical with described prism is 5 degree inclination angles.
3. optical fingerprint collector as claimed in claim 1 is characterized in that: described fixed cover (5) is the middle framework that has window.
4. optical fingerprint collector as claimed in claim 1 is characterized in that: described fingerprint collecting plate (3) is a CMOS fingerprint collecting plate.
5. optical fingerprint collector as claimed in claim 1 is characterized in that: described controller mainboard (2) is the dsp controller mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020650174XU CN201974818U (en) | 2010-12-09 | 2010-12-09 | Optical fingerprint gatherer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020650174XU CN201974818U (en) | 2010-12-09 | 2010-12-09 | Optical fingerprint gatherer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974818U true CN201974818U (en) | 2011-09-14 |
Family
ID=44579916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020650174XU Expired - Fee Related CN201974818U (en) | 2010-12-09 | 2010-12-09 | Optical fingerprint gatherer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170666A1 (en) * | 2012-05-17 | 2013-11-21 | Min Yu | Structure of a fingerprint collecting device |
| CN104700093A (en) * | 2015-03-30 | 2015-06-10 | 上海箩箕技术有限公司 | Fingerprint imaging module and mobile terminal |
-
2010
- 2010-12-09 CN CN201020650174XU patent/CN201974818U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170666A1 (en) * | 2012-05-17 | 2013-11-21 | Min Yu | Structure of a fingerprint collecting device |
| CN104700093A (en) * | 2015-03-30 | 2015-06-10 | 上海箩箕技术有限公司 | Fingerprint imaging module and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20141209 |
|
| EXPY | Termination of patent right or utility model |