发明名称 |
Variable scanning speed optical scanning device |
摘要 |
An optical scanning device which can prevent increase of the weight or capacity involved with distortion correction to sufficiently correct the distortion at low cost. A correction arrangement is provided to control the rotating angular velocity of a scanning rotary mirror in accordance with the scanning position of a scanning face. By controlling the rotating angular velocity of the scanning rotary mirror, the distortion aberration on the scanning face is corrected so that sufficiently accurate optical scanning can be performed without optically correcting the distortion aberration.
|
申请公布号 |
US5253085(A) |
申请公布日期 |
1993.10.12 |
申请号 |
US19910765521 |
申请日期 |
1991.09.25 |
申请人 |
HITACHI, LTD. |
发明人 |
MARUO, SEIZI;HORI, YASURO;SUZUKI, YASUAKI |
分类号 |
H04N1/113;G02B26/12;G02B27/00;H04N1/053;H04N1/12;(IPC1-7):G05B19/10 |
主分类号 |
H04N1/113 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|