CN106953999A - Scanning means - Google Patents
Scanning means Download PDFInfo
- Publication number
- CN106953999A CN106953999A CN201710250324.4A CN201710250324A CN106953999A CN 106953999 A CN106953999 A CN 106953999A CN 201710250324 A CN201710250324 A CN 201710250324A CN 106953999 A CN106953999 A CN 106953999A
- Authority
- CN
- China
- Prior art keywords
- light beam
- module
- beamlet
- scanning means
- array lenses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010287 polarization Effects 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 238000003384 imaging method Methods 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/0282—Using a single or a few point light sources, e.g. a laser diode
- H04N1/0284—Using a single or a few point light sources, e.g. a laser diode in combination with a light integrating, concentrating or diffusing cavity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
- H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
- H04N1/0318—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light-source, a lens array and a photodetector array which are supported by a single-piece frame
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
The present invention provides a kind of scanning means, comprising：Light source, conversion module, light valve and image sensing module；Light source is used to provide the first light beam, and the first light beam includes the first beamlet with the first polarization state and the second beamlet of the second polarization state；Conversion module is arranged on the bang path of the first light beam and comprising multiple converting units, and each converting unit is included：Polarization spectroscope, reflecting element and 1/2nd wave plates, the first beamlet passes through polarization spectroscope and the second beamlet is reflected by polarization spectroscope；Reflecting element reflects the second beamlet, and the second beamlet reflected via reflecting element is through 1/2nd wave plates the 3rd beamlet of formation, and the first beamlet and the 3rd beamlet form the second light beam with the first polarization state；Light valve sends projected light beam with projective patterns to object according to the second light beam, and projected light beam forms capture light beam after being reflected through object；Image sensing module receives the capture light beam to obtain the view data of the object.
Description
Technical field
The present invention relates to scanning field, more particularly to a kind of scanning means.
Background technology
In the prior art, when being scanned using scanning means to object, object model profile information is able to maintain that
The degree of accuracy, it is necessary to ensure the light efficiency of light source, project objects brightness.Therefore, it is necessary to provide a kind of scanning means, Neng Gouti
Rise the light efficiency and lifting object projection brightness of light source.
The content of the invention
It is an object of the invention to provide a kind of scanning means, to solve the above problems.
In order to achieve the above object, the present invention provides a kind of scanning means, and for scanning object, the scanning means is included：
Light source, conversion module, light valve and image sensing module；The light source is used to provide the first light beam, and first light beam, which is included, to be had
First beamlet of the first polarization state and the second beamlet of the second polarization state, first polarization state is different from second polarization
State；The conversion module is arranged on the bang path of first light beam, and the conversion module includes multiple converting units, each conversion
Unit is included：Polarization spectroscope, reflecting element and 1/2nd wave plates, first beamlet is through the polarization spectroscope and is somebody's turn to do
Second beamlet is reflected by the polarization spectroscope；The reflecting element is arranged on the bang path of second beamlet, the reflection
Element is used to reflect second beamlet；/ 2nd wave plate is arranged on the bang path of second beamlet, via this
Second beamlet of reflecting element reflection is through 1/2nd wave plate the 3rd beamlet of formation, and the 3rd beamlet has should
First polarization state, first beamlet and second light beam of the 3rd beamlet formation with first polarization state；The light valve is set
On the bang path for being placed in second light beam, the light valve extremely should for sending projected light beam according to second light beam with projective patterns
Object, the projected light beam forms capture light beam after being reflected through the object；The image sensing module be used for receive the capture light beam with
Obtain the view data of the object.
Preferably, the scanning means is also included：First array lenses and the second array lenses, first array lenses with
Second array lenses are configured between the light source and the conversion module and are arranged on the bang path of first light beam, and this
One light beam is incident to the conversion module via first array lenses, second array lenses successively, and first array lenses are used
In splitting first light beam and focusing on second array lenses, second array lenses are used to evenly distribute first light
Beam.
Preferably, the conversion module is attached at the exit facet of second array lenses.
Preferably, first array lenses include multiple lenticules respectively with second array lenses, each lenticule
Radius of curvature is less than 5 millimeters.
Preferably, the thickness of first array lenses, second array lenses is less than 15 millimeters.
Preferably, the scanning means is also included：On collector lens, the bang path for being arranged at second light beam, this second
Light beam is incident to the light valve via the collector lens.
Preferably, the conversion module includes three converting units, the beam incident surface wide cut of each converting unit is less than
Equal to 2 millimeters.
Preferably, the scanning means is also included：Projection imaging module and capture optics module；The projection imaging module is set
It is placed on the bang path of the projected light beam, the projection imaging module is used to guide the projected light beam to be projected to the object；Should
Capture optics module is arranged on the bang path of the capture light beam, and the capture optics module is used to guide the capture light beam to project
To the image sensing module.
Preferably, the scanning means is also included：Module is reflected, is arranged on the bang path of the projected light beam, the projection
Light beam is incident to the reflection module via the projection imaging module, and the reflection module reflects the projected light beam to the object, the throwing
Shadow light beam is projected to the reflection module after being reflected via the object, and reflects to form the capture light beam via the reflection module.
Preferably, the projection imaging module has primary optic axis, the capture optics module has the second optical axis, first light
Angle between axle and second optical axis is less than 15 degree.
Compared with prior art, the scanning means that the present invention is provided, the light beam that light source is sent is after conversion module, conversion
For the light with identical polar, in such manner, it is possible to the interference for non-body surface single refraction/repeatedly refraction, scattering are produced is reduced,
The light efficiency of light source is lifted, lifting object projection brightness maintains the degree of accuracy of object model profile information.
Brief description of the drawings
The schematic diagram for the scanning means that Fig. 1 provides for one embodiment of the invention；
Fig. 2 is a kind of schematic diagram for changing module provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of converting unit provided in an embodiment of the present invention；
The schematic diagram for the scanning means that Fig. 4 provides for another embodiment of the present invention；
The schematic diagram for the scanning means that Fig. 5 provides for further embodiment of this invention；
The schematic diagram for the scanning means that Fig. 6 provides for yet another embodiment of the invention.
Embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby coordinate embodiment detailed
It is described as follows.
The schematic diagram for the scanning means that Fig. 1 provides for one embodiment of the invention；Fig. 2 is one kind provided in an embodiment of the present invention
Change the schematic diagram of module；Fig. 3 is the schematic diagram of converting unit provided in an embodiment of the present invention.Carried out below in conjunction with Fig. 1 to Fig. 3
Explanation.Scanning means 100 is used to scan object, and scanning means 100 is included：Light source 10, conversion module 20, light valve 30 and image
Sense module 50.It is mixed light that light source 10, which is used to provide the first light beam L1, the first light beam L1, specifically, the first light beam L1 includes tool
There is the first beamlet L11 of the first polarization state and the second beamlet L12 of the second polarization state, wherein the first polarization state is different from
Second polarization state.Change on module 20, the bang path for being arranged at the first light beam L1, conversion module 20 includes multiple converting units
21, it is exemplary, preferably, as shown in Fig. 2 conversion module 20 includes 3 converting units 21, the light beam of each converting unit 21
Plane of incidence wide cut pitch is less than or equal to 2 millimeters, to efficiently control the volume of scanning means 100.As shown in figure 3, each conversion
Unit 21 is included：Polarization spectroscope 211, the wave plate 213 of reflecting element 212 and 1/2nd, the first beamlet L11 pass through polarization
Spectroscope 211 and the second beamlet L12 is reflected by polarization spectroscope 211；Reflecting element 212 is arranged at the second beamlet L12's
On bang path, reflecting element 212 is used to reflect the second beamlet L12；/ 2nd wave plates 213 are arranged at the second beamlet
On L12 bang path, wherein, the second beamlet L12 reflected via reflecting element 212 passes through the shape of 1/2nd wave plate 213
Into the 3rd beamlet, the 3rd beamlet has the first polarization state, and the first beamlet L11 through polarization spectroscope 211 is with passing through
Second light beam L2 of the beamlet of 1/2nd wave plate 213 the 3rd formation with the first polarization state.Light valve 30 is arranged at the second light beam
On L2 bang path, light valve 30 is used to send projected light beam L3 according to the second light beam L2 with projective patterns to object, projection
Light beam L3 forms capture light beam L4 after being reflected through object.Image sensing module 50 is used for the figure that object is obtained according to capture light beam L4
As data, thereby, scanning means 100 can obtain the scan-image of object.Wherein in the present embodiment, object is tooth, when
So or other organisms.Scanning means provided in an embodiment of the present invention, the light beam that light source 10 is sent is by conversion module 20
Afterwards, the light that light source is sent is converted into the light with identical polar, in such manner, it is possible to reduce non-body surface single refraction/
The interference that repeatedly refraction, reflection are produced, lifts the light efficiency of light source, and lifting object projection brightness maintains object model profile letter
The degree of accuracy of breath.
The schematic diagram for the scanning means that Fig. 4 provides for another embodiment of the present invention.Scanning means 100 ' shown in Fig. 4 with it is upper
The difference for stating the scanning means 100 shown in Fig. 1 is that the scanning means 100 ' shown in Fig. 4 can also be included：First array lenses
80 and second array lens 90, the first array lenses 80 and the second array lenses 90 be configured at light source 10 and conversion module 20 it
Between and be arranged on the first light beam L1 bang path, the first light beam L1 that light source 10 is sent is via the first array lenses 80,
Two array lenses 90 are incident to conversion module 20, and the first array lenses 80 are used to the first light beam L1 be split to and focused on second gust
Row lens 90, the second array lenses 90 are used to evenly distribute the first light beam L1.Further, the first array lenses 80 and the second array
Lens 90 include multiple lenticules respectively, and the radius of curvature of each lenticule is less than 5 millimeters.Further, the first array lenses 80
Thickness be less than 15 millimeters, the thickness of the second array lenses 90 is less than 15 millimeters.
Further, as shown in figure 4, conversion module 20 is attached at the exit facet of the second array lenses 90, in other words, modulus of conversion
More than 20/ converting unit 21 of group abuts the exit facet of the second array lenses 90.In such manner, it is possible to lift light efficiency and will be contaminated with many
The polarity light for planting polarization state is converted to the polarity light with identical polarization state.
Preferably, as shown in figure 4, scanning means 100 ' can also be included：Collector lens 102, collector lens 102 is configured at
Change between module 20 and light valve 30 and be arranged on the second light beam L2 bang path, the second light that converted module 20 is projected
Beam L2 is incident to light valve 30 via collector lens 102.
Fig. 5 is the structural representation of another scanning means provided in an embodiment of the present invention.Scanning means shown in Fig. 5
300 and the difference of the scanning means 100 ' shown in above-mentioned Fig. 4 are that the scanning means 300 shown in Fig. 5 can also be included：Projection
Imaging modules 40, capture optics module 70 and reflection module 60.Projection imaging module 40 is arranged at projected light beam L3 transmission
On path, projection imaging module 40 is projected to object for guiding projection light beam L3.Capture optics module 70 is arranged at capture
On light beam L4 bang path, capture optics module 70 is used to guide capture light beam L4 to be projected to image sensing module 50.Reflection
Module 60 is arranged on projected light beam L3 bang path, and projected light beam L3 is incident to reflection module via projection imaging module 40
60, the reflected projection beam L3 of module 60 is to object for reflection, and projected light beam L3 is projected to reflection module 60 after being reflected via object, and
Capture light beam L4 is reflected to form via reflection module 60.Specifically, reflection module 60 can be the reflection with fully reflecting surface 602
Mirror 601, projected light beam L3 is incident to object after being reflected via fully reflecting surface 602, after projected light beam L3 is projected on object, through thing
Body is reflected and is projected to after fully reflecting surface 602, and capture light beam L4 is reflected to form through fully reflecting surface 602.Preferably, projection imaging mould
Group 40 has primary optic axis, and capture optics module 70 has the second optical axis, and the angle between primary optic axis and the second optical axis is less than
15 degree.
Fig. 6 is the structural representation of another scanning means provided in an embodiment of the present invention.Scanning means shown in Fig. 6
300 ' are with the difference of the scanning means 300 shown in above-mentioned Fig. 5, the reflection module 60 ' in the scanning means 300 ' shown in Fig. 6
It can include：Reflecting element 611, quarter-wave plate 613 and beam splitter 612.Quarter-wave plate 613 is arranged at light splitting
Between element 612 and object 200.Beam splitter 612 is arranged between reflecting element 611 and quarter-wave plate 613, projected light
Beam L3 is incident to after reflecting element 611, then the reflection of reflected element 611 and sequentially passes through light splitting member afterwards through beam splitter 612
Object 200 is projected to after part 612, quarter-wave plate 613, projected light beam L3 reflects through object 200 and passes through quarter-wave
After piece 613, beam splitter 612 is incident to, capture light beam L4 is reflected to form through beam splitter 612.Specifically, beam splitter 612
It can be light splitting polarizer.
As shown in Figure 5, Figure 6, projection imaging module 40 can be included：First lens 401, the first polarizer 402, projection
Light beam L3 successively via be incident to after the first lens 401, the first polarizer 402 reflection module 60 or reflection module 60 ', via
Object 200 is incident to after reflection module 60 or 60 ' reflection.
As shown in Figure 5, Figure 6, capture optics module 70 can be included：Second lens 701, the second polarizer 702, capture
Light beam L4 after the second polarizer 702, the second lens 701 successively via being incident to image sensing module 50.
It should be noted that in another embodiment of the present invention, scanning means can not include reflection module, and only
Include projection imaging module 40 and capture optics module 70；In a further embodiment of the present invention, scanning means can also
Not comprising reflection module, and only comprising projection shaping mould group 40 or capture optics module 70, specifically set with practical application request
Depending on, as long as scanning means can obtain the scan-image of object.
Specifically, above-mentioned scanning means 100,100 ', 300 and 300 ' can be mouth cavity scanner, object 200 can be
Tooth.
Scanning means provided in an embodiment of the present invention, the light beam that light source is sent sends light source after conversion module
Light is converted to the light with identical polar, in such manner, it is possible to reduce non-body surface single refraction/repeatedly refraction, reflection production
Raw interference, lifts the light efficiency of light source, and lifting object projection brightness maintains the degree of accuracy of object model profile information.
The present invention is been described by by above-mentioned related embodiment, but above-described embodiment is only the example for implementing the present invention.
It must be noted that, the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from the present invention spirit and
In the range of the change and retouching made, belong to the scope of patent protection of the present invention.
Claims (10)
1. a kind of scanning means, for scanning object, it is characterised in that the scanning means is included：
Light source, for providing the first light beam, first light beam is inclined comprising the first beamlet with the first polarization state and second
Second beamlet of polarization state, first polarization state is different from second polarization state；
Change on module, the bang path for being arranged at first light beam, the conversion module includes multiple converting units, each conversion
Unit is included：
Polarization spectroscope, first beamlet passes through the polarization spectroscope and second beamlet is reflected by the polarization spectroscope；
On reflecting element, the bang path for being arranged at second beamlet, the reflecting element is used to reflect second beamlet；With
And
On 1/2nd wave plates, the bang path for being arranged at second beamlet, second son reflected via the reflecting element
Light beam has first polarization state, first sub-light through 1/2nd wave plate the 3rd beamlet of formation, the 3rd beamlet
Beam and second light beam of the 3rd beamlet formation with first polarization state；
On light valve, the bang path for being arranged at second light beam, the light valve be used for according to second light beam send projected light beam with
Projective patterns are to the object, and the projected light beam forms capture light beam after being reflected through the object；And
Image sensing module, for receiving the capture light beam to obtain the view data of the object.
2. scanning means as claimed in claim 1, it is characterised in that the scanning means is also included：First array lenses and
Second array lenses, first array lenses and second array lenses are configured between the light source and the conversion module and set
In on the bang path of first light beam, first light beam is incident via first array lenses, second array lenses successively
To the conversion module, first array lenses are used to split first light beam and focus on second array lenses, and this second
Array lenses are used to evenly distribute first light beam.
3. scanning means as claimed in claim 2, it is characterised in that the conversion module is attached at going out for second array lenses
Penetrate face.
4. scanning means as claimed in claim 2, it is characterised in that first array lenses are distinguished with second array lenses
Comprising multiple lenticules, the radius of curvature of each lenticule is less than 5 millimeters.
5. scanning means as claimed in claim 2, it is characterised in that first array lenses, the thickness of second array lenses
Degree is less than 15 millimeters.
6. scanning means as claimed in claim 2, it is characterised in that the scanning means is also included：Collector lens, is configured at this
Change between module and the light valve and be arranged on the bang path of second light beam, second light beam enters via the collector lens
It is incident upon the light valve.
7. scanning means as claimed in claim 1, it is characterised in that the conversion module includes three converting units, and this is each
The beam incident surface wide cut of converting unit is less than or equal to 2 millimeters.
8. scanning means as claimed in claim 1, it is characterised in that the scanning means is also included：
Projection imaging module, is arranged on the bang path of the projected light beam, and the projection imaging module is used to guide the projected light
Beam is projected on the object；And
On capture optics module, the bang path for being arranged at the capture light beam, the capture optics module is used to guide the capture light
Beam is projected to the image sensing module.
9. scanning means as claimed in claim 8, it is characterised in that the scanning means is also included：Module is reflected, this is arranged at
On the bang path of projected light beam, the projected light beam is incident to the reflection module via the projection imaging module, the reflection module
The projected light beam is reflected to the object, and the projected light beam is projected to the reflection module after being reflected via the object, and anti-via this
Penetrate module and reflect to form the capture light beam.
10. scanning means as claimed in claim 8, it is characterised in that the projection imaging module has primary optic axis, the capture
Optics module has the second optical axis, and the angle between the primary optic axis and second optical axis is less than 15 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250324.4A CN106953999A (en) | 2017-04-17 | 2017-04-17 | Scanning means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250324.4A CN106953999A (en) | 2017-04-17 | 2017-04-17 | Scanning means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106953999A true CN106953999A (en) | 2017-07-14 |
Family
ID=59477144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710250324.4A Pending CN106953999A (en) | 2017-04-17 | 2017-04-17 | Scanning means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106953999A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211143A (en) * | 2018-09-21 | 2019-01-15 | 苏州佳世达光电有限公司 | 3 D scanning system |
| CN109839079A (en) * | 2017-11-27 | 2019-06-04 | 源奇科技股份有限公司 | Optical sensing apparatus and structured light projector |
| US11474366B2 (en) | 2017-11-27 | 2022-10-18 | Liqxtal Technology Inc. | Light projector |
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| CN203025425U (en) * | 2012-12-29 | 2013-06-26 | 深圳市时代华影科技开发有限公司 | High-luminous-efficiency light modulating device and high-luminous-efficiency stereographic projection system |
| CN203054396U (en) * | 2012-09-13 | 2013-07-10 | 京东方科技集团股份有限公司 | Linearly polarized light generator, backlight module and display device |
| CN105137596A (en) * | 2015-09-17 | 2015-12-09 | 苏州佳世达光电有限公司 | Scanning device |
| CN105467607A (en) * | 2015-12-08 | 2016-04-06 | 苏州佳世达光电有限公司 | A scanning device |
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| CN1241263A (en) * | 1997-10-09 | 2000-01-12 | 精工爱普生株式会社 | Projection type display |
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| CN101598294A (en) * | 2008-04-29 | 2009-12-09 | 立景光电股份有限公司 | Collimating lens, illumination unit and projection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839079A (en) * | 2017-11-27 | 2019-06-04 | 源奇科技股份有限公司 | Optical sensing apparatus and structured light projector |
| US11269193B2 (en) | 2017-11-27 | 2022-03-08 | Liqxtal Technology Inc. | Optical sensing device and structured light projector |
| US11474366B2 (en) | 2017-11-27 | 2022-10-18 | Liqxtal Technology Inc. | Light projector |
| CN109211143A (en) * | 2018-09-21 | 2019-01-15 | 苏州佳世达光电有限公司 | 3 D scanning system |
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Application publication date: 20170714 |