CN2098056U - Multi-beam laser rotating mirror type optical scanning system - Google Patents
Multi-beam laser rotating mirror type optical scanning system Download PDFInfo
- Publication number
- CN2098056U CN2098056U CN 91217734 CN91217734U CN2098056U CN 2098056 U CN2098056 U CN 2098056U CN 91217734 CN91217734 CN 91217734 CN 91217734 U CN91217734 U CN 91217734U CN 2098056 U CN2098056 U CN 2098056U
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- China
- Prior art keywords
- laser
- modulator
- mirror
- scanning system
- optical scanning
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- 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.)
- Expired - Lifetime
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- 230000003287 optical effect Effects 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000007723 transport mechanism Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- XJUNRGGMKUAPAP-UHFFFAOYSA-N dioxido(dioxo)molybdenum;lead(2+) Chemical compound [Pb+2].[O-][Mo]([O-])(=O)=O XJUNRGGMKUAPAP-UHFFFAOYSA-N 0.000 claims description 2
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 1
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- Mechanical Optical Scanning Systems (AREA)
Abstract
A multi-beam laser rotating mirror type optical scanning system relates to an improvement of a laser optical scanning system for laser rotating mirror type phototypesetting. The device comprises a laser light source 1, a modulator 2, a rotating mirror 8, a rotating mirror motor 10, an F * objective lens 11, a film conveying mechanism 12 and the like. The modulator 2 is a multi-beam modulator composed of an acousto-optic device 3, an energy converter 4 and a multi-frequency signal source 5 and used for controlling a laser high-speed switch and laser light splitting conversion, and the rotating mirror 8 adopts a pentaprism or a pentaprism lens group. The utility model discloses to well-known commentaries on classics mirror formula optical scanning system improve slightly, can improve its scanning speed and work efficiency at double.
Description
The utility model relates to a kind of optical scanning system, particularly the improvement of the laser optical scanning system that uses about a kind of rotary mirror type film setter.
Laser photocomposing machine is the main output device of Computerized laser photo-composing system.At present, known laser photocomposing machine is divided three classes on scan mode substantially, i.e. rotary mirror type, mirror-vibrating and drum-type.The optical scanning system of laser rotary mirror type film setter is to be made of LASER Light Source, tilting mirror, rotation mirror motor, F θ object lens and film transport mechanism etc.Wherein tilting mirror adopts prismatic mirror of multiaspect or polygonal prism axicon lens more.This tilting mirror directly influences its scanning accuracy because each reflecting surface exists the processing angle error.So this system is all very harsh to the accuracy requirement of processing, dress school and the rotation mirror motor axle system of tilting mirror.U.S. ULTRE company proposes to replace prismatic mirror of multiaspect or polygonal prism axicon lens with an optics pentaprism, thereby greatly reduces the angle processing to tilting mirror, the dress school of tilting mirror and the accuracy requirement of motor shaft system.Sweep velocity is slow, the problem of inefficiency but brought thereupon.The laser rotary mirror type optical scanning system ［ Chinese patent application 91103317.3 ］ of Changchun Optical and Precise Machinery Inst., Chinese Academy of Science's invention adopts pentaprism mirror group as tilting mirror.Solved that sweep velocity is slow, the problem of inefficiency.
The purpose of this utility model is continue to improve to improve on the basis that is tilting mirror with pentaprism or pentaprism mirror group, proposes a kind of more simple and easyly and be easy to realization, can significantly improve the optical scanning system of its sweep velocity and work efficiency again.
The utility model as shown in the figure, constitute by LASER Light Source 1, modulator 2, tilting mirror 8, rotation mirror motor 10, F θ object lens 11 and film transport mechanism 12, the bundle that is sent by LASER Light Source 1 is injected F θ object lens 11 and is converged on the film on the film transport mechanism 12 through modulator 2, tilting mirror 8, and tilting mirror 8 is by rotation mirror motor 10 control rotations.Wherein modulator 2 adopts the multi beam modulator, and tilting mirror 8 adopts pentaprism or pentaprism mirror group.The beam splitting modulator is made up of acousto-optical device 3, transducer 4 and multiple-frequency signal source 5, in order to the device of control laser high-speed switch and laser beam split conversion.Send the ultrasonic modulation signal of multiple frequency by multiple-frequency signal source 5, act on the acousto-optical device 3 by transducer 4, a branch of light that LASER Light Source 1 is sent becomes adjoining multi-beam.
The utility model improves a little to known rotary mirror type optical scanning system, can significantly improve its sweep velocity and work efficiency.
Most preferred embodiment of the present utility model is made of helium-neon laser 1, beam splitting modulator 2, catoptron 6, beam expander 7, pentaprism mirror group 8, circle grating 9, rotation mirror motor 10, F θ object lens 11 and film transport mechanism 12 etc. as shown in the figure.The acousto-optical device 3 of beam splitting modulator 2 adopts lead molybdate single crystal, transducer 4 adopts the lithium niobate material, send the ultrasonic modulation signal of two kinds of frequencies by multiple-frequency signal source 5, act on acousto-optical device 3 by transducer 4, make He-Ne Lasers be divided into two bundle adjacent light, and control by the word lattice signal of computing machine, is electrical signal conversion light signal, by pentaprism mirror group 8 and F θ object lens 11, on film, get exposure ready, by scanning (spot scan and film movements) the formation literal of both direction.Catoptron 6 is long-pending in order to the reduction printer body.Pentaprism mirror group 8 is made up of two W II～90 ° (GB7660.2-87) pentaprism, and the plane of incidence of its two pentaprisms places on the same plane, and vertical with rotating shaft, and exit plane is parallel to each other and direction is opposite.Circle grating 9 is installed on the deflection axis, utilizes the signal of grating to control the positional precision of laser dotting.F θ object lens 11 converge in laser beam on the film, and form uniform luminous point spacing.Film transport mechanism 12 is transfer systems of film.
Accompanying drawing of the present utility model is the structural drawing of native system, and 1 is LASER Light Source among the figure, and 2 is the multi beam modulator, and 3 is acousto-optical device, and 4 is transducer, 5 is the multiple-frequency signal source, and 6 is catoptron, and 7 is beam expander, and 8 is tilting mirror, 9 are the circle grating, and 10 is rotation mirror motor, and 11 is F θ object lens, and 12 is film transport mechanism.
Claims (2)
1, laser rotary mirror type optical scanning system is by LASER Light Source, modulator, tilting mirror, rotation mirror motor, formations such as F θ object lens and film transport mechanism, the light beam that is sent by LASER Light Source is injected F θ object lens and is converged on the film on the film transport mechanism through modulator, tilting mirror, tilting mirror is by rotation mirror motor control rotation, it is characterized in that modulator adopts the multi beam modulator, tilting mirror adopts pentaprism or pentaprism mirror group, said multi beam modulator is made up of acousto-optical device, transducer and multiple-frequency signal source, in order to the device of control laser high-speed switch and laser beam split conversion.
2, optical scanning system according to claim 1 is characterized in that the acousto-optical device of multi beam modulator adopts lead molybdate single crystal, and transducer adopts the lithium niobate material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91217734 CN2098056U (en) | 1991-07-05 | 1991-07-05 | Multi-beam laser rotating mirror type optical scanning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91217734 CN2098056U (en) | 1991-07-05 | 1991-07-05 | Multi-beam laser rotating mirror type optical scanning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2098056U true CN2098056U (en) | 1992-03-04 |
Family
ID=4925353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91217734 Expired - Lifetime CN2098056U (en) | 1991-07-05 | 1991-07-05 | Multi-beam laser rotating mirror type optical scanning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2098056U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301857C (en) * | 2003-06-28 | 2007-02-28 | 项建龙 | Light splitting method for realizing Multipath output on laser phototypographic composing machine and its system |
| CN101620316B (en) * | 2009-01-19 | 2012-12-12 | 深圳大学 | Optical deflection accelerator |
| CN106225715A (en) * | 2016-08-02 | 2016-12-14 | 中国科学院长春光学精密机械与物理研究所 | A kind of pentaprism scanning detection method for non-spherical reflector |
| CN106842228A (en) * | 2017-01-19 | 2017-06-13 | 北京飞思迈尔光电科技有限公司 | A kind of optical scanner sensor |
| CN109532243A (en) * | 2018-09-27 | 2019-03-29 | 合肥兆通科技有限公司 | A kind of high speed light guide plate laser printer |
-
1991
- 1991-07-05 CN CN 91217734 patent/CN2098056U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301857C (en) * | 2003-06-28 | 2007-02-28 | 项建龙 | Light splitting method for realizing Multipath output on laser phototypographic composing machine and its system |
| CN101620316B (en) * | 2009-01-19 | 2012-12-12 | 深圳大学 | Optical deflection accelerator |
| CN106225715A (en) * | 2016-08-02 | 2016-12-14 | 中国科学院长春光学精密机械与物理研究所 | A kind of pentaprism scanning detection method for non-spherical reflector |
| CN106842228A (en) * | 2017-01-19 | 2017-06-13 | 北京飞思迈尔光电科技有限公司 | A kind of optical scanner sensor |
| CN106842228B (en) * | 2017-01-19 | 2023-08-29 | 北京飞思迈尔光电科技有限公司 | Optical scanning sensor |
| CN109532243A (en) * | 2018-09-27 | 2019-03-29 | 合肥兆通科技有限公司 | A kind of high speed light guide plate laser printer |
| CN109532243B (en) * | 2018-09-27 | 2020-07-24 | 合肥泰沃达智能装备有限公司 | High-speed light guide plate laser printer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |