CN112904554A - Color laser scanning system and method using MEMS (micro-electromechanical systems) resonator mirror - Google Patents
Color laser scanning system and method using MEMS (micro-electromechanical systems) resonator mirror Download PDFInfo
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- CN112904554A CN112904554A CN202110088422.9A CN202110088422A CN112904554A CN 112904554 A CN112904554 A CN 112904554A CN 202110088422 A CN202110088422 A CN 202110088422A CN 112904554 A CN112904554 A CN 112904554A
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- laser scanning
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- imaging lens
- color laser
- mems
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003384 imaging method Methods 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims description 4
- 238000004590 computer program Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012634 optical imaging Methods 0.000 description 5
- 229910052711 selenium Inorganic materials 0.000 description 5
- 239000011669 selenium Substances 0.000 description 5
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000003748 selenium group Chemical group *[Se]* 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
Abstract
The invention provides a color laser scanning system using an MEMS (micro-electromechanical system) resonant mirror, which comprises a laser emitting unit, the MEMS resonant mirror, a first imaging lens and a second imaging lens, wherein the MEMS resonant mirror comprises a reflecting surface, the laser emitting unit is used for emitting four laser beams, the four laser beams are simultaneously incident on the reflecting surface at different incident angles, and the MEMS resonant mirror is used for rotating the reflecting surface to and fro at a preset frequency and a preset angle so that the four laser beams are sequentially incident on the first imaging lens and the second imaging lens at different angles. The invention can improve the scanning speed, reduce the quantity of imaging lenses and reflectors of the optical system and reduce the production cost. Correspondingly, the invention also provides a color laser scanning method using the MEMS resonance mirror.
Description
Technical Field
The invention relates to the technical field of laser scanning, in particular to a color laser scanning system and method using an MEMS (micro-electromechanical system) resonant mirror.
Background
The laser scanning technology is widely applied to the fields of laser printers, laser scanners, emerging laser cutting, laser welding and the like. Laser printers are more widely used.
In the prior art, most of laser printers adopt a traditional laser scanning mode. In the conventional laser scanning mode, a motor rotates a polyhedron, each reflecting surface of the polyhedron can only reflect and scan two laser beams at most, and a color laser printer needs 4 laser beams to scan simultaneously, so that the laser scanning speed is reduced due to the influence of the rotation speed of the polyhedron. In addition, since 4 laser beams are reflected by different reflecting surfaces of the polyhedron, each subsequent optical imaging system lens and reflector needs to be imaged, so that the number of the imaging lenses and reflectors of the optical system is increased. That is, the conventional laser scanning method is adopted in the existing color laser printer, and there are problems that the scanning speed is reduced due to the influence of the rotational speed of the polygon and the production cost is high.
Disclosure of Invention
Based on this, in order to solve the problems that the scanning speed of the existing color laser printer is reduced due to the influence of the rotational speed of a polyhedron and the generation cost is high because the existing color laser printer adopts the traditional laser scanning mode, the invention provides a color laser scanning system and a method using an MEMS (micro-electromechanical system) resonance mirror, and the specific technical scheme is as follows:
a color laser scanning system using a MEMS resonator mirror includes a laser emitting unit, a MEMS resonator mirror, a first imaging lens, and a second imaging lens;
the MEMS resonant mirror comprises a reflecting surface, the laser emitting unit is used for emitting four laser beams, and the four laser beams are simultaneously incident on the reflecting surface at different incidence angles;
the MEMS resonator mirror is used for rotating the reflecting surface in a reciprocating mode at a preset frequency and a preset angle so that four laser beams can be emitted into the first imaging lens and the second imaging lens in sequence at different angles.
Because the color laser scanning system adopts the MEMS resonant mirror to enable the reflecting surface to rotate back and forth at the preset frequency and the preset angle, and the four laser beams share one reflecting surface for scanning, the color laser scanning system can overcome the problem that the scanning speed of the existing color laser printer is reduced due to the influence of the rotational speed of a polyhedron because the traditional laser scanning mode is adopted, and can improve the scanning speed. Meanwhile, because the four laser beams share one reflecting surface, the subsequent optical imaging lens can adopt a combination mode (namely, a group of optical imaging lenses are adopted), so that the quantity of the imaging lenses and the reflecting mirrors of the optical system can be reduced, and the production cost is reduced.
Further, the laser emission unit includes four dual-beam laser diodes and four DOE lenses, and the four dual-beam laser diodes correspond to the four DOE lenses one to one.
Further, the MEMS resonant mirror also comprises a micro motor, and the reflecting surface is fixedly arranged on a rotating shaft of the micro motor.
Further, the incident angles of the four laser beams are sequentially different by 3 °.
Further, the first imaging lens and the second imaging lens are both laser scanning lenses.
Further, the scanning range of the color laser scanning system is ± 30 °.
Further, the color laser scanning system further comprises a toner cartridge.
Accordingly, the present invention also provides a color laser scanning method using the MEMS resonator mirror, which includes the steps of:
emitting four beams of laser;
the four laser beams are simultaneously incident on the reflecting surface at different incidence angles;
and rotating the reflecting surface in a reciprocating manner at a preset frequency and a preset angle to enable the four beams of laser to be sequentially emitted into the first imaging lens and the second imaging lens at different angles.
Further, the reflecting surface is fixedly arranged on a rotating shaft of the micro motor.
Accordingly, the present invention also provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements a color laser scanning method using a MEMS resonator mirror as described above.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
FIG. 1 is a schematic diagram showing an overall structure of a color laser scanning system using MEMS resonator mirrors in an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of a color laser scanning system using MEMS resonator mirrors in an embodiment of the present invention;
fig. 3 is a schematic diagram showing the overall structure of a color laser scanning system using a MEMS resonator mirror according to an embodiment of the present invention.
Description of reference numerals:
1. a laser emitting unit; 2. a MEMS resonator mirror; 3. a first imaging lens; 4. a second imaging lens; 5. y scanning the light; 6. c, scanning the light; 7. m scanning the light; 8. k scanning the light; 9. an image plane; 10. a dual beam laser diode; 11. a DOE lens; 12. and a selenium drum.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
As shown in fig. 1, 2 and 3, a color laser scanning System using a MEMS (Micro Electro Mechanical System) resonator mirror in an embodiment of the present invention includes a laser emitting unit 1, a MEMS resonator mirror 2, a first imaging lens 3 and a second imaging lens 4;
the MEMS resonator mirror 2 comprises a reflecting surface, and the laser emitting unit 1 is used for emitting four laser beams which are simultaneously incident on the reflecting surface at different incidence angles;
the MEMS resonator mirror 2 is configured to rotate the reflection surface back and forth at a preset frequency and at a preset angle, so that four laser beams sequentially enter the first imaging lens 3 and the second imaging lens 4 at different angles.
Specifically, after the four laser beams sequentially enter the first imaging lens 3 and the second imaging lens 4 at different angles, four scanning laser beams are formed on the system image plane of the color laser scanning system. As shown in fig. 1, 2 and 3, the four scanning laser beams are a Y scanning laser beam 5, a C scanning laser beam 6, an M scanning laser beam 7 and a K scanning laser beam 8.
Because the color laser scanning system adopts the MEMS resonant mirror 2 to make the reflecting surface rotate back and forth at the preset frequency and the preset angle, and the four laser beams share one reflecting surface for scanning, the color laser scanning system can overcome the problem that the scanning speed of the existing color laser printer is reduced due to the influence of the rotational speed of a polyhedron because the traditional laser scanning mode is adopted, and can improve the scanning speed. Meanwhile, because the four laser beams share one reflecting surface, the subsequent optical imaging lens can adopt a combination mode (namely, a group of optical imaging lenses are adopted), so that the quantity of the imaging lenses and the reflecting mirrors of the optical system can be reduced, and the production cost is reduced.
In one embodiment, as shown in fig. 1, 2 and 3, the laser emitting unit 1 includes four dual-beam laser diodes 10 and four DOE (Diffractive Optical Elements) lenses 11, and the four dual-beam laser diodes 10 correspond to the four DOE lenses 11 one by one. The use of the dual beam laser diode 10 can improve the printing speed of the color laser printer.
In one embodiment, the MEMS resonator mirror 2 further comprises a micro-motor, and the reflective surface is fixedly mounted on a rotating shaft of the micro-motor.
In one embodiment, the incident angles of the four laser beams are sequentially different by 3 °.
In one embodiment, the first imaging lens 3 and the second imaging lens 4 are both laser scanning lenses. Specifically, the spherical radius of curvature of the first imaging lens 3 is smaller than that of the second imaging lens 4.
In one embodiment, as shown in FIG. 2, the distance between the image plane 9 and the center of the MEMS resonator mirror 2 is 70 mm.
In one embodiment, the scanning range of the color laser scanning system is ± 30 °.
In one embodiment, the color laser scanning system further comprises a cartridge 12 for imaging. The number of the selenium drums 12 is four, and the four scanning laser beams are respectively imaged on the four selenium drums 12.
In one embodiment, the four selenium drums 12 are distributed at equal intervals, and the distance between the axes of two adjacent selenium drums 12 is 65 mm.
In one embodiment, the color laser scanning system further includes a feedback module, a control module, and a driving module, where the feedback module is configured to detect a rotation angle of the reflection surface in real time and feed the rotation angle back to the control module, the control module is configured to receive the rotation angle and send a signal instruction to the driving module according to the rotation angle, a preset frequency, and a preset angle, and the driving module is configured to drive the rotation shaft to rotate back and forth according to the signal instruction, so that four laser beams sequentially enter the first imaging lens 3 and the second imaging lens 4 at different angles. Through setting up feedback module, control module and drive module, can detect the turned angle of plane of reflection in real time to better realize the scanning function of colored laser scanning system. Wherein the feedback module is an angle sensor.
In one embodiment, the color laser scanning system further includes a preset module, and the preset module is configured to input and store the preset frequency and the preset angle. Through the preset module, a user can conveniently input and/or adjust the preset frequency and the preset angle according to actual needs.
In the above embodiments, the total optical path length of the color laser scanning system using the MEMS resonator mirror may be set according to actual situations, and therefore, the detailed description is omitted here.
In one embodiment, the present invention also provides a color laser scanning method using a MEMS resonator mirror, comprising the steps of:
emitting four laser beams;
the four laser beams are simultaneously incident on the reflecting surface at different incidence angles;
and rotating the reflecting surface back and forth at a preset frequency and a preset angle to enable the four laser beams to sequentially enter the first imaging lens 3 and the second imaging lens 4 at different angles.
In one embodiment, the reflective surface is fixedly mounted on a rotating shaft of the micro-machine.
In one embodiment, the present invention also provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements a color laser scanning method using a MEMS resonator mirror as described above.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A color laser scanning system using a MEMS resonator mirror, the color laser scanning system comprising: the MEMS laser imaging device comprises a laser emitting unit, an MEMS resonant mirror, a first imaging lens and a second imaging lens;
the MEMS resonant mirror comprises a reflecting surface, the laser emitting unit is used for emitting four laser beams, and the four laser beams are simultaneously incident on the reflecting surface at different incidence angles;
the MEMS resonator mirror is used for rotating the reflecting surface in a reciprocating mode at a preset frequency and a preset angle so that four laser beams can be emitted into the first imaging lens and the second imaging lens in sequence at different angles.
2. The color laser scanning system using the MEMS resonator mirror according to claim 1, wherein the laser emitting unit includes four dual-beam laser diodes and four DOE lenses, and four dual-beam laser diodes correspond to four DOE lenses one to one.
3. A color laser scanning system using a MEMS resonator mirror according to claim 2, wherein the MEMS resonator mirror further comprises a micro-motor, and the reflective surface is fixedly mounted on a rotation shaft of the micro-motor.
4. A color laser scanning system using MEMS resonator mirrors according to claim 3, wherein the incident angles of the four laser beams are sequentially different by 3 °.
5. The color laser scanning system using MEMS resonator mirrors as claimed in claim 4, wherein said first imaging lens and said second imaging lens are laser scanning lenses.
6. The color laser scanning system using the MEMS resonator mirror according to claim 5, wherein the scanning range of the color laser scanning system is ± 30 °.
7. The color laser scanning system using the MEMS resonator mirror according to claim 6, wherein the color laser scanning system further comprises a toner cartridge.
8. A method of color laser scanning using MEMS resonator mirrors, comprising the steps of:
emitting four laser beams;
the four laser beams are simultaneously incident on the reflecting surface at different incidence angles;
and the reflecting surface is rotated in a reciprocating manner at a preset frequency and a preset angle, so that the four laser beams are sequentially emitted into the first imaging lens and the second imaging lens at different angles.
9. The color laser scanning method using the MEMS resonator mirror according to claim 8, wherein the reflecting surface is fixedly installed on a rotating shaft of a micro-motor.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements a method of color laser scanning using a MEMS resonator mirror as claimed in claim 8 or 9 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088422.9A CN112904554A (en) | 2021-01-22 | 2021-01-22 | Color laser scanning system and method using MEMS (micro-electromechanical systems) resonator mirror |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088422.9A CN112904554A (en) | 2021-01-22 | 2021-01-22 | Color laser scanning system and method using MEMS (micro-electromechanical systems) resonator mirror |
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| CN112904554A true CN112904554A (en) | 2021-06-04 |
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| CN202110088422.9A Pending CN112904554A (en) | 2021-01-22 | 2021-01-22 | Color laser scanning system and method using MEMS (micro-electromechanical systems) resonator mirror |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311770A (en) * | 2007-05-21 | 2008-11-26 | 一品光学工业股份有限公司 | Micro electro mechanical swing laser scanning device and its assembling method |
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2021
- 2021-01-22 CN CN202110088422.9A patent/CN112904554A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311770A (en) * | 2007-05-21 | 2008-11-26 | 一品光学工业股份有限公司 | Micro electro mechanical swing laser scanning device and its assembling method |
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Application publication date: 20210604 |
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