JPH0477120U - - Google Patents
Info
- Publication number
- JPH0477120U JPH0477120U JP12156190U JP12156190U JPH0477120U JP H0477120 U JPH0477120 U JP H0477120U JP 12156190 U JP12156190 U JP 12156190U JP 12156190 U JP12156190 U JP 12156190U JP H0477120 U JPH0477120 U JP H0477120U
- Authority
- JP
- Japan
- Prior art keywords
- polygon mirror
- rotating
- aperture
- rotating polygon
- mirror device
- 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 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
Description
第１図は本考案に係る走査光学装置の一実施例
の平面図、第２図はその概略側面図、第３図は本
考案に係る薄型多面鏡の斜視図、第４図〜第６図
はそれぞれ多面鏡の厚さが大きい場合の光強度分
布図、第７図〜第９図はそれぞれ多面鏡の厚さが
所定の幅である場合の光強度分布図、第１０図は
光学系の略式図、第１１図はビーム径の深度カー
ブ図、第１２図は回転多面鏡装置の斜視図、第１
３図〜第１７図はそれぞれ多面鏡押え部材の説明
図、第１８図は多面鏡の位置ずれを抑止する固定
手段の説明図、第１９図はその多面鏡回転モータ
装置の斜視図である。
２……レーザダイオード、４……カツプリング
レンズ、６……第１のアパーチヤ、８……第１の
シリンドリカルレンズ、１０，３２……回転多面
鏡、１２……ｆθレンズ、１４……第２のシリン
ドリカルレンズ、１６……被走査面、２２，２７
，２８，３０……多面鏡押え部材、３４……移動
止め用穴、４４……移動止め用ピン。
FIG. 1 is a plan view of an embodiment of a scanning optical device according to the present invention, FIG. 2 is a schematic side view thereof, FIG. 3 is a perspective view of a thin polygon mirror according to the present invention, and FIGS. 4 to 6 are light intensity distribution diagrams when the thickness of the polygon mirror is large, Figures 7 to 9 are light intensity distribution diagrams when the thickness of the polygon mirror is a predetermined width, and Figure 10 is a diagram of the optical system. Schematic diagram, Fig. 11 is a depth curve diagram of beam diameter, Fig. 12 is a perspective view of the rotating polygon mirror device, Fig. 1
3 to 17 are explanatory views of a polygon holding member, FIG. 18 is an explanatory view of a fixing means for suppressing displacement of a polygon mirror, and FIG. 19 is a perspective view of the polygon rotation motor device. 2... Laser diode, 4... Coupling lens, 6... First aperture, 8... First cylindrical lens, 10, 32... Rotating polygon mirror, 12... fθ lens, 14... Second cylindrical lens, 16...Scanned surface, 22, 27
, 28, 30... Polygon mirror holding member, 34... Detent hole, 44... Detent pin.
Claims (1)
の一部を遮光する第１のアパーチヤと、前記第１
のアパチヤを通過した光束を偏向走査する回転多
面鏡装置と、該回転多面鏡装置によつて偏向され
た光束によつて操作される被走査面と、前記被走
査面上に光束を結像する結像光学系と、を有する
走査光学装置において、 前記回転多面鏡装置の多面鏡の回転軸方向の反
射面の厚さが前記第１のアパーチヤによる前記多
面鏡上での回折光の光強度分布の第１の極小の幅
とほぼ等しく設定されていることと、 前記回転多面鏡装置が薄型多面鏡と、該薄型多
面鏡を載置する載置台と、該載置台を回転する回
転モータとから構成されていることと、 回転による前記多面鏡の変形を抑える多面鏡抑
え手段と、回転による前記多面鏡の位置ずれを抑
える固定手段とを有していることを特徴とする走
査光学装置。[Claims for Utility Model Registration] A laser light source, a first aperture that blocks a part of the luminous flux emitted from the laser light source, and the first
a rotating polygon mirror device that deflects and scans the light beam that has passed through the aperture of the rotating polygon mirror device; a scanned surface that is operated by the light beam deflected by the rotating polygon mirror device; and an image of the light beam on the scanned surface. and an imaging optical system, wherein the thickness of the reflective surface in the rotation axis direction of the polygon mirror of the rotating polygon mirror device is the light intensity distribution of the diffracted light on the polygon mirror due to the first aperture. The rotating polygon mirror device includes a thin polygon mirror, a mounting table on which the thin polygon mirror is placed, and a rotating motor that rotates the mounting table. What is claimed is: 1. A scanning optical device comprising: a polygonal mirror suppressing means for suppressing deformation of the polygonal mirror due to rotation; and a fixing means for suppressing displacement of the polygonal mirror due to rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12156190U JPH0477120U (en) | 1990-11-19 | 1990-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12156190U JPH0477120U (en) | 1990-11-19 | 1990-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0477120U true JPH0477120U (en) | 1992-07-06 |
Family
ID=31869412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12156190U Pending JPH0477120U (en) | 1990-11-19 | 1990-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0477120U (en) |
-
1990
- 1990-11-19 JP JP12156190U patent/JPH0477120U/ja active Pending
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