Light source mechanism for an imaging apparatus
AssigneeUmax Data Systems Inc.
InventorPo-Hua Fang
Life of this patent
Estimating the term…
Abstract
A light source mechanism for an imaging apparatus comprises at least a point light source and a light shield. The point light source located at one end of the light shield is used for providing illumination to the imaging apparatus during a scanning process. The light shield is a hollow pipe structure and further includes a long slot lying along an axial longitudinal direction thereof for allowing lights to leave the light shield. An inner surface of the light shield is made as a diffusion surface for evenly diffusing lights inside the light shield, by which a homogeneous line light source for the scanning process is formed at the long slot of the light shield.
Claims8
A light source mechanism for an imaging apparatus, comprising:
- at least a point light source, for providing illumination to the imaging apparatus during a scanning process;
- and
- a light shield including a hollow pipe structure and having a mounting element at one end for installing the point light source;
- wherein the light shield further includes a long slot lying along an axial longitudinal direction thereof for allowing lights to leave the light shield, an inner surface of the light shield being a diffusion surface for diffusing lights inside the light shield, and wherein a line light source is formed at the long slot of the light shield,
- wherein said diffusion surface of said light shield includes a plurality of ring protrusions.
A light source mechanism for an imaging apparatus, comprising:
- at least a point light source, for providing illumination to the imaging apparatus during a scanning process;
- and
- a light shield including a hollow pipe structure and having a mounting element at one end for installing the point light source;
- wherein the light shield further includes a long slot lying along an axial longitudinal direction thereof for allowing lights to leave the light shield, an inner surface of the light shield being a diffusion surface for diffusing lights inside the light shield, and wherein a line light source is formed at the long slot of the light shield, and
- wherein said light shield includes an upper half and a mating lower half, the upper half having said diffusion surface, and the lower half including said long slot and an interior high reflection layer.
A light source mechanism for an imaging apparatus, comprising:
- at least a point light source, for providing illumination to the imaging apparatus during a scanning process;
- and
- a light shield including a hollow pipe structure and having a mounting element at one end for installing the point light source;
- wherein the light shield further includes a long slot lying along an axial longitudinal direction thereof for allowing lights to leave the light shield, an inner surface of the light shield being a diffusion surface for diffusing lights inside the light shield, and wherein a line light source is formed at the long slot of the light shield, and
- wherein a diffusion ability of said diffusion surface of said light shield increases with an increase in the distance from said point light source.
Dependencies are inferred from the claim text.