Photographic film image reading apparatus with film density detection
US7022960B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2003 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Oct 31, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is described an image reading apparatus that reads image information from a document, such as a negative film, a photographic prints, etc., on which image information is recorded. The image-apparatus includes a plurality of light sources for emitting lights, wavelengths of which are different relative to each other; an image-reading section to read the image by detecting either transmitted lights or reflected lights, which are obtained by irradiating the lights emitted from the plurality of light sources onto the image recorded on a document; and a light-amount adjusting section to independently adjust each amount of the lights emitted by the plurality of light sources, when the image-reading section reads the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.