Abstract
An analytical expression for spot moving speed on the former vibrating mirror of the polygonal mirror scanning system objective is derived from geometrical optical principle. The structural characteristics of the system are the origin for creating scanning nonlinearity and asymmetry, and they will cause image distortion. The numerical calculation results for the designed polygonal mirror system with 40 planes, a radius of 40 mm and rotating speed of 23437.5 r/min show that the maximum speed difference in line scanning is about 6 m/s and the time symmetric center is changed from 32 μs to about 30.7477 μs. These results can be used as reference for image distortion correction.
| Original language | English |
|---|---|
| Pages (from-to) | 26-28+32 |
| Journal | Guangdian Gongcheng/Opto-Electronic Engineering |
| Volume | 31 |
| Issue number | 3 |
| State | Published - Mar 2004 |
| Externally published | Yes |
Keywords
- Asymmetric scanning
- Light spots
- Nonlinear scanning
- Polygonal mirror scanning