Optical scanning lens and optical scanning apparatus
US6069724A · kind A · utility
80Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1998 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Feb 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical scanning apparatus includes an optical scanning lens composed of a single lens which is arranged and adapted to correct for placement errors of optical elements. The shapes of both surfaces of the optical scanning lens are non-arc in a deflective surface and at least one surface thereof has a special toric surface. The scanning lens is meniscus having a concave shape in a sub-scanning direction and is biconvex in a main scanning direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.