Automatic scanning optics alignment
US4627721A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1985 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Nov 20, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is concerned with the automatic adjustment of the optical components in an optical scanning system after the tech rep has visually inspected sample copies with a test pattern and entered adjustment numbers at the control console. The control determines the optimum relative position of the optical components for a focus and various magnification ratios and stores these relationships as reference numbers in memory for reference at the selected magnification ratios. These reference numbers can be altered as future copies are inspected by the tech rep and appropriate evaluation numbers are entered into the control. In a specific embodiment, one sample copy is compared by the tech rep with the test pattern to adjust the magnification setting and a sequence of five set copies are produced to coarse adjust and fine adjust focus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.