Scanning optical system having a fall-down correcting function
US4379612A · kind A · utility
30Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1980 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Aug 28, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A scanning optical system provided with a light source portion, a first imaging optical system for linearly imaging the light beam emitted from the light source portion, a deflector having its deflecting-reflecting surface near the linear image formed by said first imaging optical system, a scanned medium scanned by the light beam deflected by the deflector, and a second imaging optical system disposed between the scanned medium and the deflector and comprising, in succession from the deflector side, a spherical single lens and a single lens having a toric surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.