Optical element, optical scanner and image forming apparatus
US7038822B2 · kind B2 · utility
22Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Aug 13, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/473
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An optical element can effectively correct misalignment of focused positions of optical spots and an optical spot pitch deviation with respect to image heights due to a refractive index distribution therein. The optical element includes a lens, which serves as an optical system in an optical scanner, is shaped in such a profile that misalignment of a focused position of the optical spot due to the refractive index distribution is corrected for image heights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.