Erecting equal-magnification lens array plate, optical scanning unit, image reading device, and image writing device
US8817378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2012 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jun 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An erecting equal-magnification lens array plate includes: a first lens array plate provided with a plurality of first lenses systematically arranged on a first surface and a plurality of second lenses systematically arranged on a second surface opposite to the first surface; and a second lens array plate provided with a plurality of third lenses systematically arranged on a third surface and a plurality of fourth lenses systematically arranged on a fourth surface opposite to the third surface. The first lens array plate and the second lens array plate form a stack such that the second surface and the third surface face each other to ensure that a combination of the lenses aligned with each other form a coaxial lens system. A plurality of V grooves are formed in an area between adjacent second lenses on the second surface in the erecting equal-magnification lens array plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.