JPS6366528A - Parallel scanning beam generator - Google Patents
Parallel scanning beam generatorInfo
- Publication number
- JPS6366528A JPS6366528A JP61213190A JP21319086A JPS6366528A JP S6366528 A JPS6366528 A JP S6366528A JP 61213190 A JP61213190 A JP 61213190A JP 21319086 A JP21319086 A JP 21319086A JP S6366528 A JPS6366528 A JP S6366528A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- section
- light
- parallel scanning
- handed
- 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
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、平行走査光線発生装置（通常、スキャナーと
いう）に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a parallel scanning beam generating device (commonly referred to as a scanner).
スキャンされた光線（主としてレーザ光線）は長さ等を
測定する場合、あるいは図形等を描く場合に使用されて
いるが、従来、光線をスキャンさせる手段としては、振
動するミラーにレーザー光等の光を当てる振動ミラーに
よる手段と、多面体ミラーを回転させ該多面体ミラーに
光を当てるポリゴンミラーによる手段とがあった。Scanned light beams (mainly laser beams) are used to measure length, etc., or to draw figures, etc., but conventionally, as a means of scanning the light beam, a vibrating mirror is used to send light such as a laser beam to a vibrating mirror. There are two methods: one using a vibrating mirror that illuminates the light, and the other using a polygon mirror that rotates a polygon mirror and illuminates the polygon mirror.
ところが、上記振動ミラーによる手段あるいはポリゴン
ミラーによる手段においては、該ミラーから反射される
光線は角度を有して扇状のビームになるという問題点が
あった。However, in the means using a vibrating mirror or the means using a polygon mirror, there is a problem that the light beam reflected from the mirror has an angle and becomes a fan-shaped beam.
そこで、振動ミラーと凹面鏡又はレンズとを組合わした
平行光発生ミラーも一部に使用されているが、振動ミラ
ーと凹面鏡又はレンズを有しているので、壊れ易くメン
テナンスが難しいという問題点があった。Therefore, parallel light generating mirrors that combine a vibrating mirror and a concave mirror or lens are used in some cases, but since they have a vibrating mirror and a concave mirror or lens, they have the problem of being easily broken and difficult to maintain. Ta.
また、幅の広い平行走査光を得ようとする場合、上記凹
面鏡又はレンズを使用した手段では凹面鏡又はレンズが
大型になるので、製作が困難となるという問題点があっ
た。Furthermore, when attempting to obtain parallel scanning light with a wide width, the method using the concave mirror or lens described above has the problem that the concave mirror or lens becomes large and difficult to manufacture.
本発明はこのような事情に迄みてなされたもので、走査
光線が平行光線となって、しかもスキャンの幅の広い平
行走査光線発生装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a parallel scanning beam generating device in which scanning beams are parallel beams and the scan width is wide.
上記目的に沿う本発明に係る平行走査光線発生装置は、
モータによって回転駆動される円柱部と、該円柱部の周
面に螺旋状に立設されたミラー部と、該ミラー部に軸方
向から光を当てる投光部とを有して構成されている。A parallel scanning light beam generating device according to the present invention that achieves the above object is as follows:
It is composed of a cylindrical part that is rotationally driven by a motor, a mirror part that is spirally erected on the circumferential surface of the cylindrical part, and a light projection part that applies light to the mirror part from the axial direction. .
ここに、ミラー部は円柱部の軸方向に対して４５度の角
度で配設されているのが好ましい。Here, the mirror portion is preferably disposed at an angle of 45 degrees with respect to the axial direction of the cylindrical portion.
また、ミラー部は３６０度巻いた右巻ミラー部と左巻ミ
ラー部とに分割され、投光部も左投光部と右投光部から
なっているもの、更には、右巻ミラー部と左巻ミラー部
との軸方向の接続端部は所定角度ずれて、しかも右巻ミ
ラー部と左巻ミラー部とは光学的にみて一９５ｍ複して
いるものであっても本発明は適用されるものである。In addition, the mirror section is divided into a right-handed mirror section and a left-handed mirror section that are wound 360 degrees, and the light projecting section is also composed of a left projecting section and a right projecting section. The present invention is applicable even if the axial connection end with the left-handed mirror section is deviated by a predetermined angle, and the right-handed mirror section and the left-handed mirror section overlap by 195 m from an optical perspective. It is something that
更に、投光部とはレーザ光線発生部からなるものあるい
は通常の光線発生部からなるものであっても本発明は通
用されるものである。Furthermore, the present invention is applicable even if the light projecting section is a laser beam generating section or a normal light beam generating section.
本発明に係る平行走査光線発生装置は、モータによって
回転駆動される円柱部と、該円柱部の周面に螺旋状に立
設されたミラー部と、該ミラー部に軸方向から光を当て
る投光部とを有して構成されているので、投光部から光
を螺旋状に立設されたミラー部に当てると、ミラー部の
投光部分が円柱部の回転に伴って軸方向に移動し、反射
光も軸方向に移動することになるが、ミラー部の終端部
で反射光は切れるが、円柱部の回転に伴いミラー部の始
端部に移動するので、連続的にスキャンされた平行走査
光線が発生することになる。A parallel scanning light beam generating device according to the present invention includes a cylindrical part that is rotationally driven by a motor, a mirror part that is spirally erected on the circumferential surface of the cylindrical part, and a projection that illuminates the mirror part from an axial direction. When light is directed from the light projecting part onto the spirally erected mirror part, the light projecting part of the mirror part moves in the axial direction as the cylindrical part rotates. However, the reflected light also moves in the axial direction, and although the reflected light is cut off at the end of the mirror section, it moves to the starting end of the mirror section as the cylindrical section rotates, so it is continuously scanned in parallel. A scanning beam will be generated.
続いて、添付した図面を参照しつつ本発明を具体化した
一実施例につき説明し、本発明の理解に供する。Next, an embodiment embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.
ここに、第１図は本発明の第１の実施例に係る平行走査
光線発生装置の概略構成を示す（１１１面図、第２図は
本発明の第２の実施例に係る平行走査光線発生装置の１
既略構成を示す斜視図、第３図は＝Ｌ記第２の実施例に
係る平行走査光線発生装置の説明する為の展開図、第４
図は本発明の第３の実施例に係る平行走査光線発生装置
を説明する為の展開図である。Here, FIG. 1 shows a schematic configuration of a parallel scanning beam generating device according to a first embodiment of the present invention (111 side view, and FIG. 2 shows a schematic configuration of a parallel scanning beam generating device according to a second embodiment of the present invention). equipment 1
A perspective view showing the existing configuration; FIG. 3 is a developed view for explaining the parallel scanning beam generator according to the second embodiment;
The figure is a developed view for explaining a parallel scanning beam generator according to a third embodiment of the present invention.
第１図に示すように、本発明の第１の実施例に係る平行
走査光線発生装置１０１；′、、、回転自由に（み置き
され戸：円柱部１１と、該円柱部１１を駆動するモータ
１２と、上記円柱部１１に螺旋状に立設されたミラー部
１３と、該ミラー部１３に軸方向からレーザ光を当てる
投光部の一例であるレーザ光発生部１４とを有して構成
されている。以下、これらについて詳しく説明する。As shown in FIG. 1, a parallel scanning beam generator 101 according to a first embodiment of the present invention; It has a motor 12, a mirror section 13 spirally erected on the cylindrical section 11, and a laser beam generating section 14, which is an example of a light projecting section that applies a laser beam to the mirror section 13 from the axial direction. These are explained below in detail.
上記円柱部１１は両端を軸受１５．１６によって回転自
由に支持され、その一端にはモータ１２が取付られてい
る。そして、上記円柱部１１の周面にはａ旋状にミラー
部１３が立設されている。The cylindrical portion 11 is rotatably supported at both ends by bearings 15, 16, and a motor 12 is attached to one end thereof. A mirror portion 13 is erected on the circumferential surface of the cylindrical portion 11 in an a-circular shape.
このミラー部１３はピッチ角４５度で、しかも円柱の表
面に対して垂直に立てられて、第１図に示すように横方
向から入射したレーザ光が直角に反射して下方に向けら
れるようになっている。This mirror section 13 has a pitch angle of 45 degrees and is erected perpendicularly to the surface of the cylinder so that laser light incident from the side is reflected at right angles and directed downward, as shown in FIG. It has become.
また、上記ミラー部１３の螺旋回転角度は３６０度とな
って、反射部がミラー部１３の終端１７から始線１８に
直ちに移行するようになっている上記円柱部１１の一方
の周端ｔ＋３には、レーザ光発生部１４が配設され、上
記ミラー部１３に向けて軸方向にレーザ光を発生するよ
うになっているこの平行走査光線発生装置１０の作用に
つき説明すると、レーザ光発生部１４から放射されてレ
ーザ光は、ミラー部１３によって反射されるが、該ミラ
ー部１３のピッチ角が４５度となっているので、レーザ
光は直角方向に反射され、しかも円柱部１１はモータ１
２によって回転駆動されているので、反射部の位置が第
１図に見て右方向に移動し、この為反射するレーザ光も
直線状を移動して平行走査光線が発生することになる。Further, the helical rotation angle of the mirror portion 13 is 360 degrees, and the reflecting portion immediately moves from the terminal end 17 of the mirror portion 13 to the starting line 18 at one peripheral end t+3 of the cylindrical portion 11. To explain the operation of this parallel scanning beam generator 10, which is provided with a laser beam generator 14 and is configured to generate laser beams in the axial direction toward the mirror section 13, the laser beam generator 14 The laser beam emitted from the motor 1 is reflected by the mirror section 13, but since the pitch angle of the mirror section 13 is 45 degrees, the laser beam is reflected in the right angle direction.
2, the position of the reflecting section moves to the right as seen in FIG. 1, and therefore the reflected laser beam also moves in a straight line, generating a parallel scanning beam.
なお、上記実施例においてはミラー部１３のピッチ角を
４５度としたが、これ以下にすることも可能であり、こ
れによって円柱部の径は小さくなるが、反射光線の方向
が９０度でなくなることになる。In the above embodiment, the pitch angle of the mirror section 13 was set to 45 degrees, but it can also be set to less than this, which reduces the diameter of the cylindrical section, but the direction of the reflected light ray is no longer 90 degrees. It turns out.
次に、第２図、第３図に示す本発明の第２の実施例に係
る平行走査光線発生装置１９について説明すると、本実
施例においては、円柱部１１ａに立設されているミラー
部が３６０度巻いた右巻ミラー部２０と左巻ミラー部２
１とからなり、投光部も左右に配設されているレーザ光
発光部２２．２３とからなっている。Next, the parallel scanning beam generator 19 according to the second embodiment of the present invention shown in FIGS. 2 and 3 will be explained. A right-handed mirror section 20 and a left-handed mirror section 2 that are wound 360 degrees
1, and the light projecting section also consists of laser light emitting sections 22 and 23 arranged on the left and right sides.
上記右巻ミラー部２０及び左巻ミラー部２１は第３図に
示すようにピッチ角が４５度となってその頂部において
は連接している。なお、このように形成することによっ
て、円柱の長さｌとした場合、円柱の直径を１／２π（
＝０．１６ Ｊ）程度とすることができて、円柱の直径
をスキャン長に対して著しく短くすることができる。As shown in FIG. 3, the right-handed mirror section 20 and the left-handed mirror section 21 have a pitch angle of 45 degrees and are connected at the top. Note that by forming the cylinder in this way, when the length of the cylinder is l, the diameter of the cylinder is 1/2π (
= 0.16 J), and the diameter of the cylinder can be made significantly shorter than the scan length.
このようにすることによって、レーザ光は両側部からス
キャンされることになる。By doing this, the laser beam will be scanned from both sides.
続いて、第４図に示す本発明の第３の実施例に係る平行
走査光線発生装置を構成する円柱部２５の展開状態につ
いて説明すると、円柱部２５に立設されている右巻ミラ
ー部２６が左巻ミラー部２７に対してその取付位置の位
相がずれており、しかも右巻ミラー部２６の内側端部と
左巻ミラー部２７との内側端部とはラップ（ラップ距ｊ
Ｊｔｔ＞シている。Next, the unfolded state of the cylindrical part 25 constituting the parallel scanning beam generator according to the third embodiment of the present invention shown in FIG. 4 will be explained. is out of phase with respect to the left-handed mirror section 27, and the inner end of the right-handed mirror section 26 and the inner end of the left-handed mirror section 27 overlap (wrap distance j
Jtt>Shiru.
このように形成することによって、第３図に示すように
左巻ミラー部２１と右巻ミラー部２０とのミラー部の接
合部が切れ、無光部が存在するという危惧が無くなり、
レーザ光発光部２８．２９から照射されたレーザ光を全
幅に渡って安定したスキャンさせることが可能となる。By forming it in this way, there is no fear that the joint between the left-handed mirror section 21 and the right-handed mirror section 20 will break and a non-light area will exist, as shown in FIG.
It becomes possible to stably scan the laser light emitted from the laser light emitting parts 28 and 29 over the entire width.
本発明に係る平行走査光線発生装置は以上の説明からも
明らかなように、円柱部に螺旋状にミラー部を配設して
いるので、構造が極めて簡単であり、しかも振動あるい
は往復する部分が無いので、寿命が長くメンテナンスも
簡単となる。As is clear from the above description, the parallel scanning beam generator according to the present invention has an extremely simple structure because the mirror portion is spirally arranged around the cylindrical portion, and there is no vibrating or reciprocating portion. Since there is no such thing, the lifespan is long and maintenance is easy.
また、ミラー部は円柱部に螺旋状に配設されているので
、円柱部を回転させることによって平行走査光線を容易
に発生させることができ、しかも円筒部の径を大きくす
ることによって、スパンの長い平行走査光線を容易に得
ることが可能となるIn addition, since the mirror section is arranged in a spiral shape around the cylindrical section, parallel scanning beams can be easily generated by rotating the cylindrical section, and by increasing the diameter of the cylindrical section, the span can be increased. It becomes possible to easily obtain long parallel scanning beams.
第１図は本発明の第１の実施例に係る平行走査光線発生
装置の概略構成を示す（メリ面図、第２図は本発明の第
２の実施例に係る平行走査光線発生装置の概略構成を示
す斜視図、第３図は上記第２の実施例に係る平行走査光
線発生装置の説明する為の展開図、第４図は本発明の第
３の実施例に係る平行走査光線発生装置を説明する為の
展開図である。
〔符号の説明〕
１０．１９・・・−・−・平行走査光線発生装置、１１
．１１ａ、２５−・・・・−円柱部、１２−・・曲モー
ク、１３−−−−−・ベラ一部、１４．２２．２３．２
８．２９−。FIG. 1 shows a schematic configuration of a parallel scanning beam generating device according to a first embodiment of the present invention (a meridian view), and FIG. 2 shows a schematic configuration of a parallel scanning beam generating device according to a second embodiment of the present invention. A perspective view showing the configuration, FIG. 3 is a developed view for explaining the parallel scanning beam generator according to the second embodiment, and FIG. 4 is a parallel scanning beam generator according to the third embodiment of the present invention. It is a developed view for explaining. [Explanation of symbols] 10.19...--Parallel scanning beam generator, 11
．． 11a, 25--Cylinder part, 12--Curved mork, 13-----Bella part, 14.22.23.2
8.29-.
Claims (5)
部の周面に螺旋状に立設されたミラー部と、該ミラー部
に軸方向から光を当てる投光部とを有してなることを特
徴とする平行走査光線発生装置。(1) It has a cylindrical part that is rotationally driven by a motor, a mirror part that is spirally erected on the circumferential surface of the cylindrical part, and a light projection part that applies light to the mirror part from the axial direction. A parallel scanning beam generator characterized by:
で配設されている特許請求の範囲第１項記載の平行走査
光線発生装置。(2) The parallel scanning beam generating device according to claim 1, wherein the mirror portion is disposed at an angle of 45 degrees with respect to the axial direction of the cylindrical portion.
部と左巻ミラー部に分割され、投光部も左投光部と右投
光部からなっている特許請求の範囲第１項記載の平行走
査光線発生装置。(3) The mirror section is divided into a right-handed mirror section and a left-handed mirror section, each of which is a cylindrical section wound 360 degrees, and the light projecting section also consists of a left projecting section and a right projecting section. Parallel scanning beam generating device as described in 2.
部は所定角度ずれて、しかも右巻ミラー部と左巻ミラー
部とは光学的にみて一部重複していることを特徴とする
特許請求の範囲第３項記載の平行走査光線発生装置。(4) The axial connection ends of the right-handed mirror section and the left-handed mirror section are shifted by a predetermined angle, and furthermore, the right-handed mirror section and the left-handed mirror section partially overlap from an optical perspective. A parallel scanning light beam generating device according to claim 3, characterized in that:
囲第１項、第２項、第３項または第４項記載の平行走査
光線発生装置。(5) The parallel scanning beam generating device according to claim 1, 2, 3, or 4, wherein the light projecting section comprises a laser beam generating section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61213190A JPS6366528A (en) | 1986-09-09 | 1986-09-09 | Parallel scanning beam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61213190A JPS6366528A (en) | 1986-09-09 | 1986-09-09 | Parallel scanning beam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6366528A true JPS6366528A (en) | 1988-03-25 |
Family
ID=16635028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61213190A Pending JPS6366528A (en) | 1986-09-09 | 1986-09-09 | Parallel scanning beam generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6366528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01136918U (en) * | 1988-03-12 | 1989-09-19 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639519A (en) * | 1979-09-08 | 1981-04-15 | Usac Electronics Ind Co Ltd | Optical scanning mechanism in optical printer |
| JPS5797512A (en) * | 1980-12-10 | 1982-06-17 | Hitachi Ltd | Photoscanner |
-
1986
- 1986-09-09 JP JP61213190A patent/JPS6366528A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639519A (en) * | 1979-09-08 | 1981-04-15 | Usac Electronics Ind Co Ltd | Optical scanning mechanism in optical printer |
| JPS5797512A (en) * | 1980-12-10 | 1982-06-17 | Hitachi Ltd | Photoscanner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01136918U (en) * | 1988-03-12 | 1989-09-19 | ||
| JPH0635211Y2 (en) * | 1988-03-12 | 1994-09-14 | 富士通株式会社 | Projector of parallel slit light |
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