JPS61109422U - - Google Patents
Info
- Publication number
- JPS61109422U JPS61109422U JP15952785U JP15952785U JPS61109422U JP S61109422 U JPS61109422 U JP S61109422U JP 15952785 U JP15952785 U JP 15952785U JP 15952785 U JP15952785 U JP 15952785U JP S61109422 U JPS61109422 U JP S61109422U
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- scanning
- focusing device
- focusing
- reflection
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Combination Of More Than One Step In Electrophotography (AREA)
- Facsimile Scanning Arrangements (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第1図a,bは各々この考案の第一の実施例を
示す平面図及び正面図である。図において、1は
光ビーム発生装置、2は第一の集束装置、4は第
二の集束装置、5は第三の集束装置、6は回転多
面鏡、7は拡大装置、8は走査面を各々表わす。
Figures 1a and 1b are a plan view and a front view, respectively, showing a first embodiment of this invention. In the figure, 1 is a light beam generator, 2 is a first focusing device, 4 is a second focusing device, 5 is a third focusing device, 6 is a rotating polygon mirror, 7 is a magnifying device, and 8 is a scanning plane. Each is represented.
Claims (1)
つて反射する光ビームを走査的に移動せしめる反
射装置と、上記光ビーム発生装置から入射する光
ビームを走査面で所望されるスポツトサイズに等
しいスポツトサイズに集束する第一の集束装置と
、入射する光ビームを上記反射装置の光ビーム走
査方向と垂直な方向に集束する一方向集束性を有
する第二の集束装置と、入射する光ビームを入射
角Θに対してK・Θ(Kは定数)の像高の位置に
、走査面で所望されるスポツトサイズの1/mに
等してスポツトサイズに集束するほぼテレセント
リツクな第三の集束装置と、入射する光ビームを
m倍に拡大して走査面上に集束する拡大装置とを
含み、上記第一の集束装置から上記拡大装置と上
記第二の集束装置と上記第三の集束装置を通過し
て入射する光ビームを上記反射装置の反射点上に
おいて上記反射装置の光ビーラ走査方向と水直な
方向には集束し上記反射装置の光ビーム走査方向
にはコリメートするように、上記第二の集束装置
と第三の集束装置とを配置し、上記反射装置で反
射された光ビームを前記の様に配置された第三の
集束装置と第二の集束装置とを通過せしめた後、
前記拡大装置で走査面上に集束することを特徴と
する光ビーム走査装置。 a light beam generator; a reflection device that receives an incident light beam and moves the reflected light beam in a scanning manner; a first focusing device that focuses the incident light beam in a direction perpendicular to the light beam scanning direction of the reflecting device; a third substantially telecentric focusing device that focuses the spot size equal to 1/m of the desired spot size in the scanning plane at an image height of K·Θ (K is a constant) with respect to Θ; , a magnifying device that magnifies an incident light beam by m times and focuses it on a scanning surface, the beam passing from the first focusing device through the magnifying device, the second focusing device, and the third focusing device. the second beam so as to focus the incident light beam on the reflection point of the reflection device in a direction perpendicular to the scanning direction of the optical beam of the reflection device and collimate it in the scanning direction of the light beam of the reflection device; After arranging a focusing device and a third focusing device, and causing the light beam reflected by the reflecting device to pass through the third focusing device and the second focusing device arranged as described above,
A light beam scanning device, characterized in that the light beam is focused onto a scanning surface by the magnifying device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15952785U JPS628016Y2 (en) | 1985-10-18 | 1985-10-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15952785U JPS628016Y2 (en) | 1985-10-18 | 1985-10-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61109422U true JPS61109422U (en) | 1986-07-11 |
JPS628016Y2 JPS628016Y2 (en) | 1987-02-25 |
Family
ID=30717482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15952785U Expired JPS628016Y2 (en) | 1985-10-18 | 1985-10-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS628016Y2 (en) |
-
1985
- 1985-10-18 JP JP15952785U patent/JPS628016Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS628016Y2 (en) | 1987-02-25 |
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