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US 12,108,005 B2Granted
Reading device, output device, and image forming device
AssigneeFUJIFILM Business Innovation Corp.
InventorsYoji Nishida, Hiroshi Watanabe
Life of this patent
Estimating the term…
Abstract
Provided is a reading device including: a first emitting unit configured to emit light; an optical path unit having a reflection surface configured to reflect a part of light emitted from the first emitting unit, and an optical path configured to guide the part of light from the reflection surface to an original; and an image sensor that generates an image from specular reflection of the part of light guided by the optical path from the original.
Claims12
A reading device comprising:
- a first emitting unit configured to emit light;
- an optical path unit having
- a reflection surface configured to reflect a part of light emitted from the first emitting unit, and
- an optical path configured to guide the part of light from the reflection surface to an original;
- and
- an image sensor that generates an image from specular reflection of the part of light guided by the optical path from the original,
- the first emitting unit includes
- an emission surface which is a plane, and
- an optical axis which is an optical path of light emitted in a normal direction of the emission surface through the center of the emission surface,
- wherein the reflection surface is disposed to reflect light around the optical axis at which an amount of the light emitted by the first emitting unit is the largest.
7 more elements
A reading device comprising:
- a diffusion optical system that diffusely reflects a determined luminous flux emitted by a first light source on a reading region of an original and guides the light to a light receiving element;
- and
- a specular reflection optical system that specularly reflects the luminous flux emitted by a second light source on the reading region and guides the light to the light receiving element, in which luminous flux reaching the reading region is smaller than the luminous flux in the diffusion optical system, wherein
- a dimension in a transverse direction of a reflection surface of a reflector for the specular reflection optical system is shorter than a dimension in a transverse direction of a reflection surface of a reflector for the diffusion optical system.
1 more element
A reading device comprising:
- an image sensor that generates an image from either light diffusely reflected or light specularly reflected by a reading region;
- a diffuse reflection radiation unit that uses a main scanning direction as a longitudinal direction and radiates the diffusely reflected light toward the reading region;
- and
- a specular reflection radiation unit that uses the main scanning direction as a longitudinal direction and radiates the specularly reflected light toward the reading region, which radiates light having a width in a transverse direction orthogonal to the longitudinal direction smaller than the width of the diffuse reflection radiation unit.
1 more element
Dependencies are inferred from the claim text.