CN101034437A - Fingerprint collecting method and high-resolution thin type fingerprint collector - Google Patents
Fingerprint collecting method and high-resolution thin type fingerprint collector Download PDFInfo
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- CN101034437A CN101034437A CNA2007100626759A CN200710062675A CN101034437A CN 101034437 A CN101034437 A CN 101034437A CN A2007100626759 A CNA2007100626759 A CN A2007100626759A CN 200710062675 A CN200710062675 A CN 200710062675A CN 101034437 A CN101034437 A CN 101034437A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- Optics & Photonics (AREA)
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- Theoretical Computer Science (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a fingerprint collection methods and high-definition thin fingerprint collector, in order to solve the problem of small acquisition and poor definition in existing technology, its method is: the light source is irradiated to the prism bottom through the prism, the fingerprint under the prism bottom reflect to reflection the prism oblique of the lumbar reflection mirror and black-paint layer on the prism bottom, the fingerprint images on reflective mirror and black paint layer project on the photoelectric detector through the back of prism and the projection lens. Collector is composed of the light source, bottom longitudinal cross section of the greater than high right angle trapezoidal prism, lens and photo-electric detector; lens and photo-electric detector configurating in the back-side of prism, the ramp lumbar of prism having a reflector surface, a viewfinder with oblique configuration on the lateral of lens, the photoelectric detector above viewfinder, its characteristic is that the bottom of the prism is painted black, black paint layer and reflector mirror as a reflector surface. The method has the advantages of a biger fingerprint reflector, a greater acquisition area and high definition. Collector of small size, light weight, big area of collected fingerprint image, high clarity, collector and prism to achieve ultra-thin, is convenient to match with mouse, keyboard, door locks, cars, drive, mobile phone and other equipments of space-constrained installation for use.
Description
Technical field
The present invention relates to a kind of fingerprint image acquisition technology, particularly relate to a kind of fingerprint collecting method and high-resolution thin type fingerprint collector.
Background technology
At present the fingerprint capturer that uses have all that volume is big, inconvenience and the equipped defective of using of miscellaneous equipment.For example existing volume is big, quality heavy, fingerprint capturer just be not suitable for and installing space limited devices adapteds such as mouse, keyboard, door lock, automobile, flash disk, mobile phone.It is little that existing fingerprint collecting method has a fingerprint collecting area, the defective that sharpness is low.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective of prior art, provide a kind of fingerprint collecting area big, the fingerprint collecting method that sharpness is high.The invention still further relates to the high-resolution thin type fingerprint collector that is used to implement this method.
For achieving the above object, fingerprint collecting method of the present invention uses the fingerprint capturer of being made up of greater than high right-angled trapezium prism, lens and photoelectric detector light source, base, longitudinal section, light source sees through prism and shines the prism bottom surface, fingerprint on the prism bottom surface reflex on the mirror surface of prism oblique girdle plane and the pitch-dark layer of prism upper bottom surface on, the fingerprint image on mirror surface and the pitch-dark layer sees through the straight middle surface of prism and lens projects again to photoelectric detector.So to have a fingerprint reflecting surface big in design, and it is big to gather area, the advantage that sharpness is high.
High-resolution thin type fingerprint collector of the present invention is made up of greater than high right-angled trapezium prism, lens and photoelectric detector light source, base, longitudinal section, lens and photoelectric detector are configured in prism straight middle surface one side, the oblique girdle plane of prism is shaped on mirror surface, the lens outside disposes the reflective mirror of oblique layout, the reflective mirror top is a photoelectric detector, its special feature is that the prism upper bottom surface scribbles pitch-dark layer, and pitch-dark layer and mirror surface are as reflecting surface.So design, find through the inventor is on probation: prism scribbles the oblique girdle plane that pitch-dark upper bottom surface and prism be shaped on catoptron and can make and gather the oblique girdle plane length restriction that fingerprint length no longer is shaped on catoptron simultaneously as reflecting surface.Because fingerprint length no longer is shaped on the oblique girdle plane length restriction of catoptron, just no longer is subjected to the prism thickness limits, so prism thickness can further attenuation again on the prior art basis.Because the fingerprint length of gathering is not subjected to the prism thickness limits, can increase arbitrarily as required, the area of gathering fingerprint also just can increase, and the imaging area of fingerprint also just increases, and the information in fingerprint amount increases equally, so the fingerprint image sharpness also can be more clear.
As optimization, the prism upper bottom surface scribbles anti-false sign near a side of straight middle surface.So design can increase antiforge function.
As optimization, the prism upper bottom surface scribbles pitch-dark layer near a side of oblique girdle plane.So design, because have only the prism upper bottom surface to have reflection fingerprint image function near a side of oblique girdle plane, so, the prism upper bottom surface is only when the side near oblique girdle plane scribbles pitch-dark layer, do not influence the integrality of fingerprint image, simultaneously, the part of this not blacking of prism upper bottom surface enamelled coating can also be provided with other functional parts, as lighting source, microswitch etc.
As optimization, scribble the length and prism upper bottom surface length ratio 〉=2/3 of pitch-dark layer segment.So design, can satisfy the needs of fingerprint collecting length.
As optimization, prism thickness is the 5-9 millimeter; Light source, prism, lens and photoelectric detector all are installed in the black box body.More definite saying: light source, prism, lens and photoelectric detector are all installed in the optical black box.So design, the former, when prism thickness was the 5-9 millimeter, the fingerprint length of collection still can rise to 24 millimeters by existing 18 millimeters.The thickness of whole collector may diminish to the 7-12 millimeter.The latter helps improving the fingerprint image sharpness.
As optimization, right-angled trapezium prism upper bottom surface both sides are shaped on triangular notch, and triangular notch place in both sides all is equipped with light source.So design, the former helps improving intensity of illumination, and the latter then helps making distribution of light more even.
As optimization, triangular notch place in both sides all is fitted with three tactic successively led light sources respectively.So design helps improving illuminance and makes distribution of light sources more even.
As optimization, scribble layer of transparent elastic resin film on the right-angled trapezium prism bottom surface; The angle of prismatic reflection face and bottom surface is the 70-75 degree; The inclination angle of reflective mirror is 45 degree.So design, the former, the introducing of transparent elastic resin molding then can overcome the normally defective of imaging of dried finger, helps improving the fingerprint image sharpness.The latter helps guaranteeing the sharpness and the integrality of imaging.Help improving image quality.
As optimization.The prism upper bottom surface is fitted with lighting source or microswitch near the part that straight middle surface one side does not scribble pitch-dark layer.So design, the former can increase intensity of illumination, and the latter opens the function of closing when unclamping finger in the time of realizing by fingerprint with the simplest structure.
After adopting technique scheme, it is big that fingerprint collecting method of the present invention has a fingerprint reflecting surface, and it is big to gather area, the advantage that sharpness is high.
After adopting technique scheme, high-resolution thin type fingerprint collector of the present invention compare with existing fingerprint capturer have volume little, in light weight, gather that the fingerprint image area is big, sharpness is high, collector and prism can be realized ultra-thin, the advantage of installing space limited devices adapteds such as convenience and mouse, keyboard, door lock, automobile, flash disk, mobile phone.
Description of drawings
Fig. 1 is the structural representation of high-resolution thin type fingerprint collector of the present invention;
Fig. 2 is the left view of component prism among Fig. 1;
Fig. 3 is the upward view of component prism among Fig. 1.
Embodiment
Do further explanation below in conjunction with accompanying drawing and instantiation:
Fingerprint collecting method of the present invention uses the fingerprint capturer of being made up of greater than high right-angled trapezium prism, lens and photoelectric detector light source, base, longitudinal section, light source sees through prism and shines the prism bottom surface, fingerprint on the prism bottom surface reflex on the mirror surface of prism oblique girdle plane and the pitch-dark layer of prism upper bottom surface on, the fingerprint image on mirror surface and the pitch-dark layer sees through the straight middle surface of prism and lens projects again to photoelectric detector.
As shown in the figure, high-resolution thin type fingerprint collector of the present invention is made up of greater than high right-angled trapezium prism 2, lens 3 and photoelectric detector 4 light source 1, base, longitudinal section, lens 3 and photoelectric detector 4 are configured in prism 2 straight middle surfaces one side, the oblique girdle plane of prism 2 is shaped on mirror surface 8, lens 3 outsides dispose the reflective mirror 5 of oblique layout, reflective mirror 5 tops are photoelectric detector 4, prism 2 upper bottom surface prism upper bottom surfaces scribble pitch-dark layer 7 near a side of oblique girdle plane, and pitch-dark layer 7 and mirror surface 8 are as reflecting surface.The length that scribbles pitch-dark layer 7 part is 2/3 with prism 2 upper bottom surface length ratios.Right-angled trapezium prism 2 upper bottom surface both sides are shaped on triangular notch 6, and triangular notch 6 places in both sides all are equipped with light source 1.Triangular notch 6 places in both sides all are fitted with three tactic successively high-brightness LED light sources 1 respectively.Scribble layer of transparent elastic resin film 9 on right-angled trapezium prism 2 bottom surfaces.The angle of prismatic reflection face and bottom surface is the 70-75 degree.The inclination angle of reflective mirror is 45 degree.Light source 1, prism 2, lens 3 and photoelectric detector 4 all are installed in the black box body.
Its light path is: led light source 1 sees through prism 1 directive transparent elastic resin molding 9, the light of transparent elastic resin molding 9 reflections is the oblique girdle plane and the pitch-dark layer 7 of directive prism 2 again, the straight middle surface directive lens 3 of prism 2 oblique girdle planes and the pitch-dark layer 7 light transmission prism 2 that reflects, the light that lens 3 penetrate is invested the photoelectric detector 4 of its top after mirror surface 8 reflections, thereby finishes the collection of fingerprint image.
Claims (10)
1, a kind of fingerprint collecting method, the fingerprint capturer that use is made up of greater than high right-angled trapezium prism, lens and photoelectric detector light source, base, longitudinal section, it is characterized in that light source sees through prism and shines the prism bottom surface, fingerprint on the prism bottom surface reflex on the mirror surface of prism oblique girdle plane and the pitch-dark layer of prism upper bottom surface on, the fingerprint image on mirror surface and the pitch-dark layer sees through the straight middle surface of prism and lens projects again to photoelectric detector.
2, a kind of high-resolution thin type fingerprint collector, form greater than high right-angled trapezium prism, lens and photoelectric detector by light source, base, longitudinal section, lens and photoelectric detector are configured in prism straight middle surface one side, the oblique girdle plane of prism is shaped on mirror surface, the lens outside disposes the reflective mirror of oblique layout, the reflective mirror top is a photoelectric detector, it is characterized in that the prism upper bottom surface scribbles pitch-dark layer, and pitch-dark layer and mirror surface are as reflecting surface.
3,, it is characterized in that the prism upper bottom surface scribbles anti-false sign near a side of straight middle surface according to the described high-resolution thin type fingerprint collector of claim 2.
4,, it is characterized in that the prism upper bottom surface scribbles pitch-dark layer near a side of oblique girdle plane according to the described high-resolution thin type fingerprint collector of claim 2.
5,, it is characterized in that scribbling the length and prism upper bottom surface length ratio 〉=2/3 of pitch-dark layer segment according to the described high-resolution thin type fingerprint collector of claim 4.
6,, it is characterized in that prism thickness is the 5-9 millimeter according to claim 2 or 3 or 4 or 5 described high-resolution thin type fingerprint collectors; Light source, prism, lens and photoelectric detector all are installed in the black box body.
7, according to the described high-resolution thin type fingerprint collector of claim 6, it is characterized in that right-angled trapezium prism upper bottom surface both sides are shaped on triangular notch, triangular notch place in both sides all is equipped with light source.
8,, it is characterized in that triangular notch place, both sides all is fitted with three tactic successively led light sources respectively according to the described high-resolution thin type fingerprint collector of claim 7.
9,, it is characterized in that scribbling on the right-angled trapezium prism bottom surface layer of transparent elastic resin film according to the described high-resolution thin type fingerprint collector of claim 6; The angle of prismatic reflection face and bottom surface is the 70-75 degree; The inclination angle of reflective mirror is 45 degree.
10,, it is characterized in that the prism upper bottom surface is fitted with lighting source or microswitch near the part that straight middle surface one side does not scribble pitch-dark layer according to the described high-resolution thin type fingerprint collector of claim 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100626759A CN101034437A (en) | 2007-01-12 | 2007-01-12 | Fingerprint collecting method and high-resolution thin type fingerprint collector |
| PCT/CN2007/002415 WO2008083538A1 (en) | 2007-01-12 | 2007-08-13 | Fingerprint acquisition method and highly definition type fingerprint acquisition apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100626759A CN101034437A (en) | 2007-01-12 | 2007-01-12 | Fingerprint collecting method and high-resolution thin type fingerprint collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101034437A true CN101034437A (en) | 2007-09-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100626759A Pending CN101034437A (en) | 2007-01-12 | 2007-01-12 | Fingerprint collecting method and high-resolution thin type fingerprint collector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101034437A (en) |
| WO (1) | WO2008083538A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360425A (en) * | 2011-10-21 | 2012-02-22 | 成都方程式电子有限公司 | Thinned optical fingerprint acquirer |
| CN103776998A (en) * | 2014-02-28 | 2014-05-07 | 常州思康立生物科技有限公司 | Portable immune-chromatography analysis meter |
| CN103984923A (en) * | 2014-05-08 | 2014-08-13 | 长春鸿达光电子与生物统计识别技术有限公司 | Thin type aspheric surface fingerprint collecting prism and collecting device |
| CN107679440A (en) * | 2016-08-01 | 2018-02-09 | 安帝司股份有限公司 | Thin optical fingerprint sensor |
| CN109074488A (en) * | 2018-07-04 | 2018-12-21 | 深圳市汇顶科技股份有限公司 | Fingerprint mould group and electronic equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185319B1 (en) * | 1996-12-06 | 2001-02-06 | Yamatake Honeywell Co., Ltd. | Fingerprint input apparatus |
| US20020131624A1 (en) * | 2000-08-11 | 2002-09-19 | Yury Shapiro | Fingerprint imaging device with fake finger detection |
| CN2754155Y (en) * | 2004-07-07 | 2006-01-25 | 车全宏 | Thin-square prism finger print collector |
| CN2837930Y (en) * | 2005-11-24 | 2006-11-15 | 车全宏 | Minisize fingerprint collector |
-
2007
- 2007-01-12 CN CNA2007100626759A patent/CN101034437A/en active Pending
- 2007-08-13 WO PCT/CN2007/002415 patent/WO2008083538A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360425A (en) * | 2011-10-21 | 2012-02-22 | 成都方程式电子有限公司 | Thinned optical fingerprint acquirer |
| CN103776998A (en) * | 2014-02-28 | 2014-05-07 | 常州思康立生物科技有限公司 | Portable immune-chromatography analysis meter |
| CN103776998B (en) * | 2014-02-28 | 2015-06-10 | 常州思康立生物科技有限公司 | Portable immune-chromatography analysis meter |
| CN103984923A (en) * | 2014-05-08 | 2014-08-13 | 长春鸿达光电子与生物统计识别技术有限公司 | Thin type aspheric surface fingerprint collecting prism and collecting device |
| CN107679440A (en) * | 2016-08-01 | 2018-02-09 | 安帝司股份有限公司 | Thin optical fingerprint sensor |
| CN109074488A (en) * | 2018-07-04 | 2018-12-21 | 深圳市汇顶科技股份有限公司 | Fingerprint mould group and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008083538A1 (en) | 2008-07-17 |
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