CN107577106A - A kind of imaging device based on 3D printing optical projection system - Google Patents
A kind of imaging device based on 3D printing optical projection system Download PDFInfo
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- CN107577106A CN107577106A CN201710907959.7A CN201710907959A CN107577106A CN 107577106 A CN107577106 A CN 107577106A CN 201710907959 A CN201710907959 A CN 201710907959A CN 107577106 A CN107577106 A CN 107577106A
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- optical axis
- dmd chip
- lens
- mirror
- lens group
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Abstract
A kind of imaging device based on 3D printing optical projection system of present invention offer, described device, including：Projection lens, dmd chip, reflective mirror, lens group and LED light source；The optical axis coincidence of the optical axis of projection lens and the emergent ray of dmd chip；The optical axis of the incident ray of dmd chip and the optical axis coincidence of mirror reflection light；The optical axis of reflective mirror incident ray and the optical axis coincidence of lens group；The optical axis of lens group and the optical axis coincidence of LED light source；The light that LED light source is sent passes through lens group, then by the rotational micromirror on mirror reflection to dmd chip, and rotational micromirror is completely covered, after rotated micro mirror reflection, inject projection lens；The light of mirror reflection more than the theoretical incident angle of dmd chip to inject on the rotational micromirror on dmd chip, after rotated micro mirror reflection, to inject projection lens more than the theoretical shooting angle of dmd chip.
Description
Technical field
The present invention relates to 3D printing optical projection technical field, and in particular to a kind of based on 3D printing optical projection system
Imaging device.
Background technology
SLA/DLP 3D printing systems, DMD is used as optical processing elements.In theory, the incidence angle of DMD reflective micro-mirrors
For -24 °, micro mirror deflects+12 ° during DMD ON states, and such DMD emergent ray is vertical with chip surface for 0 °.Most of light
It is all to remove application, camera lens optical axis and DMD emergent ray optical axis coincidence, to DMD according to DMD Theoretical Design to learn projector equipment
Picture imaging on micro mirror, illuminate photosensitive resin, and then curing molding.
DMD Theoretical Design, the influence of micromechanics is received, the contrast for the picture that deflection angle obtains more greatly is higher, so
And current level is arrived, the rotation of DMD micro mirrors can only accomplish positive and negative 12 °.The smaller contrast for not only influenceing picture of angular deflection,
The installation of projection lens and reflective mirror can also be influenceed.Deflection angle is too small, and camera lens and reflective mirror are needed away from dmd chip, so meeting
Cause image-forming range long, in turn result in light intensity decline.
The content of the invention
For drawbacks described above of the prior art, the invention provides a kind of imaging based on 3D printing optical projection system
Device, the placement space of reflective mirror can be obtained, and then improve the contrast of picture in projection lens.
A kind of imaging device based on 3D printing optical projection system provided by the invention, including：Projection lens, DMD cores
Piece, reflective mirror, lens group and LED light source；
The optical axis coincidence of the optical axis of the projection lens and the emergent ray of the dmd chip；
The optical axis coincidence of the optical axis of the incident ray of the dmd chip and the mirror reflection light；
The optical axis of the reflective mirror incident ray and the optical axis coincidence of the lens group；
The optical axis coincidence of the optical axis of the lens group and the LED light source；
The light that the LED light source is sent passes through the lens group, then by the mirror reflection to the dmd chip
On rotational micromirror on, and the rotational micromirror is completely covered, after rotational micromirror reflection, injects the projection lens
Head；
The light of the mirror reflection is with more than on the theoretical incident angle of the dmd chip injection dmd chip
Rotational micromirror on, after rotational micromirror reflection, to inject the projection more than the theoretical shooting angle of the dmd chip
Camera lens.
Optionally, the LED light source uses LED ultraviolet sources.
Optionally, the reflective mirror uses plane mirror or has the concave mirror of diopter.
Optionally, the lens group is made up of at least one lens.
Optionally, the lens are using the one or more in biconvex lens, planoconvex spotlight, concave-convex lens.
From above technical scheme, the present invention provides a kind of imaging device based on 3D printing optical projection system, bag
Include：Projection lens, dmd chip, reflective mirror, lens group and LED light source；The optical axis of the projection lens and the dmd chip
The optical axis coincidence of emergent ray；The optical axis coincidence of the optical axis of the incident ray of the dmd chip and the mirror reflection light；
The optical axis of the reflective mirror incident ray and the optical axis coincidence of the lens group；The optical axis of the lens group and the LED light source
Optical axis coincidence；The light that the LED light source is sent passes through the lens group, then by the mirror reflection to the DMD
On rotational micromirror on chip, and the rotational micromirror is completely covered, after rotational micromirror reflection, injects the projection
Camera lens；Rotation of the light of the mirror reflection to be injected more than the theoretical incident angle of the dmd chip on the dmd chip
Turn on micro mirror, after rotational micromirror reflection, to inject the projection lens more than the theoretical shooting angle of the dmd chip
Head.
By the incidence angle for increasing dmd chip so that the angle increase between the incidence angle and the angle of emergence of dmd chip, no
But reflective mirror can be reasonably placed, increases reflective surface area, reduces and injects blocking for camera light, pair of picture can also be strengthened
Than degree, the interference of veiling glare is reduced.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art.In all of the figs, similar element
Or part is typically identified by similar reference.In accompanying drawing, each element or part might not be drawn according to the ratio of reality.
Fig. 1 shows that the embodiment of the present invention provides a kind of signal of the imaging device based on 3D printing optical projection system
Figure.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be intended only as example, and the protection of the present invention can not be limited with this
Scope.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
The invention provides a kind of imaging device based on 3D printing optical projection system.Below in conjunction with the accompanying drawings to the present invention
Embodiment illustrate.
Fig. 1 shows a kind of showing for imaging device based on 3D printing optical projection system that the embodiment of the present invention is provided
It is intended to.As shown in figure 1, a kind of imaging device based on 3D printing optical projection system provided in an embodiment of the present invention, including：Throw
Shadow camera lens, dmd chip, reflective mirror, lens group and LED light source；The emergent light of the optical axis of the projection lens and the dmd chip
The optical axis coincidence of line；The optical axis coincidence of the optical axis of the incident ray of the dmd chip and the mirror reflection light；It is described anti-
The optical axis of light microscopic incident ray and the optical axis coincidence of the lens group；The optical axis of the optical axis of the lens group and the LED light source
Overlap；The light that the LED light source is sent passes through the lens group, then by the mirror reflection to the dmd chip
Rotational micromirror on, and the rotational micromirror is completely covered, after rotational micromirror reflection, injects the projection lens；
The light of the mirror reflection is micro- with the rotation injected more than the theoretical incident angle of the dmd chip on the dmd chip
On mirror, after rotational micromirror reflection, to inject the projection lens more than the theoretical shooting angle of the dmd chip.
Wherein, the theoretical incident angle of dmd chip refers to the point of theory of the incident ray of dmd chip, is -24 °；DMD
When the theoretical shooting angle of chip refers to that dmd chip is in ON states, the shooting angle of the emergent ray of dmd chip, the theory
Shooting angle is 0 °；When dmd chip is in OFF state, the point of theory of the OFF state emergent ray of dmd chip is 24 °.
Therefore, when dmd chip is in ON states, the theoretical value of the angle between the emergent ray and incident ray of dmd chip
24°。
Wherein, when dmd chip switches to ON states from OFF state, the rotational micromirror on dmd chip can be to incident angle
Direction rotates 12 °, and therefore, when dmd chip is in ON states, the theoretical shooting angle of dmd chip is 0 °；At dmd chip
When OFF state, the point of theory of the OFF state emergent ray of dmd chip is 24 °.
When the light of mirror reflection is with more than on the theoretical incident angle of the dmd chip injection dmd chip
After rotational micromirror, when dmd chip is in ON states, the emergent ray of dmd chip will be more than theoretical 0 ° of shooting angle；And
The incident ray of dmd chip and the angle of the emergent ray under ON states also will be greater than 24 ° of theoretical value.Meanwhile at dmd chip
When OFF state, the OFF state emergent ray angle of dmd chip also will be greater than 24 ° of theoretical value.
For example, when the light of mirror reflection injects dmd chip with -30 ° of incidence angle, dmd chip is in ON states
The angle of emergent ray be 6 °, the angle that dmd chip be in the emergent ray of OFF state is 30 °, wherein, 6 ° be more than it is theoretical
0 ° of value；Meanwhile when dmd chip is in ON states, the incident ray of dmd chip and the angle of emergent ray are 36 °, more than reason
By 24 ° of value.
In the present invention, the relation between reflective mirror and dmd chip is：
When the light of mirror reflection injects dmd chip with-n ° of incidence angle, wherein, n>24 °, dmd chip is in ON
The angle of the emergent ray of state is (n-24) °, and dmd chip is in the incident ray of ON states and the angle of emergent ray is
(2n-24) °, the angle that dmd chip is in the emergent ray of OFF state are n °.
By the incidence angle for increasing dmd chip so that the angle increase between the incidence angle and the angle of emergence of dmd chip, no
But reflective mirror can be reasonably placed, increases reflective surface area, reduces and injects blocking for camera light, pair of picture can also be strengthened
Than degree, the interference of veiling glare is reduced.
In the present invention, the LED light source can use LED ultraviolet sources.By using LED ultraviolet sources, Neng Gougu
Chemical conversion type, form picture.
In the present invention, the reflective mirror can use one in plane mirror, the concave mirror for having diopter etc.
Kind.
Reflective mirror in the present invention can use different types of reflective mirror, it is possible to increase use range of the invention.
In the present invention, the lens group can be made up of at least one lens.As shown in figure 1, lens group is flat by three
Convex lens group into.
Wherein, the lens can use the one or more in biconvex lens, planoconvex spotlight, concave-convex lens etc., different
Lens can be combined into different lens groups, and application is wider.
More than, it is a kind of embodiment of the imaging device based on 3D printing optical projection system provided in an embodiment of the present invention
Explanation.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.
Claims (5)
- A kind of 1. imaging device based on 3D printing optical projection system, it is characterised in that including：Projection lens, dmd chip, Reflective mirror, lens group and LED light source；The optical axis coincidence of the optical axis of the projection lens and the emergent ray of the dmd chip；The optical axis coincidence of the optical axis of the incident ray of the dmd chip and the mirror reflection light；The optical axis of the reflective mirror incident ray and the optical axis coincidence of the lens group；The optical axis coincidence of the optical axis of the lens group and the LED light source；The light that the LED light source is sent passes through the lens group, then by the mirror reflection to the dmd chip On rotational micromirror, and the rotational micromirror is completely covered, after rotational micromirror reflection, injects the projection lens；Rotation of the light of the mirror reflection to be injected more than the theoretical incident angle of the dmd chip on the dmd chip Turn on micro mirror, after rotational micromirror reflection, to inject the projection lens more than the theoretical shooting angle of the dmd chip Head.
- 2. the imaging device according to claim 1 based on 3D printing optical projection system, it is characterised in that the LED Light source uses LED ultraviolet sources.
- 3. the imaging device according to claim 1 based on 3D printing optical projection system, it is characterised in that described reflective Mirror uses plane mirror or has the concave mirror of diopter.
- 4. the imaging device according to claim 1 based on 3D printing optical projection system, it is characterised in that the lens Group is made up of at least one lens.
- 5. the imaging device according to claim 1 based on 3D printing optical projection system, it is characterised in that the lens Using the one or more in biconvex lens, planoconvex spotlight, concave-convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907959.7A CN107577106A (en) | 2017-09-29 | 2017-09-29 | A kind of imaging device based on 3D printing optical projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907959.7A CN107577106A (en) | 2017-09-29 | 2017-09-29 | A kind of imaging device based on 3D printing optical projection system |
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| Publication Number | Publication Date |
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| CN107577106A true CN107577106A (en) | 2018-01-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710907959.7A Pending CN107577106A (en) | 2017-09-29 | 2017-09-29 | A kind of imaging device based on 3D printing optical projection system |
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| CN106363908A (en) * | 2016-09-05 | 2017-02-01 | 深圳市鹏安视科技有限公司 | Optical imaging system of photocuring 3D printer |
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| CN206394016U (en) * | 2016-12-26 | 2017-08-11 | 内蒙古机电职业技术学院 | A kind of photosensitive 3D printer of DLP projections |
| CN207216245U (en) * | 2017-09-29 | 2018-04-10 | 深圳晗竣雅科技有限公司 | A kind of imaging device based on 3D printing optical projection system |
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536391A (en) * | 2003-04-07 | 2004-10-13 | ���ǵ�����ʽ���� | Optical lighting system and image projection system containing it |
| CN1790096A (en) * | 2004-12-14 | 2006-06-21 | 斯曼特微显示科技（深圳）有限公司 | Projection system with total reflection prism |
| CN1940638A (en) * | 2005-09-29 | 2007-04-04 | 明基电通股份有限公司 | Projection system |
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| CN103676426A (en) * | 2012-09-13 | 2014-03-26 | 扬明光学股份有限公司 | Projecting device and method for reducing stray light |
| CN204740418U (en) * | 2015-07-14 | 2015-11-04 | 中国科学院重庆绿色智能技术研究院 | Blue light fluorescence excitation powder formula laser car light based on DMD |
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Application publication date: 20180112 |