Image reading device
AssigneeFuji Photo Film Co., Ltd.
InventorTatsuya Konagaya
Life of this patent
Estimating the term…
Abstract
A CCD scanner is provided with a halogen lamp for irradiating illumination light for reading a frame image on a photographic film, and a halogen lamp for irradiating infrared light via an infrared light filter for detecting scratches and the like on the film surface, and the optical axes of the respective light sources are coincided by a half mirror. A diffusion plate turret is also provided for selectively placing each of a plurality of diffusion plates for diffusing the illumination light near the photographic film. As a result, it is possible to perform both an image reading that doubles as an erasure of scratching on the film surface using visible light having different degrees of diffusion and a detection of scratches and the like using infrared light.
Claims24
An image reading device for reading an image recorded on an original in predetermined different color wavelengths, comprising:
- a light source for visible light for irradiating light of visible light regions onto a surface of the original in accordance with the color wavelengths so as to read image information of the original;
- a light source for non-visible light for irradiating light of non-visible light regions onto a surface of the original in order to detect scratching on the original or dust on the optical path;
- an adjustable diffusion member that is provided on an optical path of the light source for visible light and the light source for non-visible light and which makes the amount of light irradiated onto the surface of the original substantially uniform;
- and an image processing section for correcting the image information based on image defect portion detection information obtained by an image reading using light from the light source for non-visible light.
An image reading device for reading an image recorded on an original in predetermined different color wavelengths, comprising:
- a light source for visible light for irradiating light of visible light regions onto a surface of the original in accordance with the color wavelengths so as to read image information of the original;
- a light source for non-visible light for irradiating light of non-visible light regions onto a surface of the original in order to detect scratching on the original or dust on the optical path;
- a reflecting member for adjusting at least one of an optical path of the light source for visible light and an optical path of the light source for non-visible light such that the optical path of the light source for visible light and an optical path of the light source for non-visible light coincide and are irradiated onto the surface of the original;
- an adjustable diffusion member that is provided on an optical path between the reflecting means and the original and which makes the amount of light irradiated onto the surface of the original substantially uniform;
- and an image processing section for correcting the image information based on image defect portion detection information obtained by an image reading using light from the light source for non-visible light.
An image reading device for reading an image recorded on an original in predetermined different color wavelengths, comprising:
- a light source for visible light for irradiating light of visible light regions onto a surface of the original in accordance with the color wavelengths so as to read image information of the original;
- a light source for non-visible light for irradiating light of non-visible light regions onto a surface of the original in order to detect scratching on the original or dust on the optical path;
- a diffusion member that is provided adjacent to the light source for visible light on an optical path between the light source for visible light and the original, and which makes the amount of light irradiated onto the surface of the original substantially uniform, the diffusion member not being provided on an optical path between the light source for non-visible light and the original;
- and an image processing section for correcting the image information based on image defect portion detection information obtained by an image reading using light from the light source for non-visible light.
An image reading device for reading an image recorded on an original in predetermined different color wavelengths comprising:
- a light generation source that includes a light source for visible light for irradiating light of visible light regions onto a surface of the original in accordance with the color wavelengths so as to read image information of the original, and a light source for non-visible light for irradiating light of non-visible light regions onto a surface of the original in order to detect scratching on the original or dust on the optical path;
- an adjusting member that is positioned on the optical path between the light generation source and the original and performs adjustments such that the light from the light generation source is only one of either the visible light or the non-visible light;
- a diffusion member for diffusing light that is constructed so as to move onto the optical path between the adjusting member and the original when visible light is being irradiated, and to be able to be withdrawn from the optical path when non-visible light is being irradiated;
- and an image processing section for correcting the image information based on image defect portion detection information obtained by an image reading using light from the light source for non-visible light.
Dependencies are inferred from the claim text.