Distance detection device
AssigneePixart Imaging Inc.
InventorsHun Kwang Lee, Sai Mun Lee, Lye Pin Chu
Life of this patent
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Abstract
A distance detection device includes a light source, a light guiding component, an image sensor and a processor. The light guiding component is disposed adjacent to the light source and includes a discontinuous surface. The light guiding component is adapted to project a beam emitted from the light source onto an object to form an illuminating pattern spotted by the discontinuous surface. The image sensor is adapted to capture an image about the object. The processor is electrically connected with the image sensor and utilized to analyze position variation of a spot formed by the discontinuous surface within the image for determining a distance of the object.
Claims18
A distance detection device, comprising:
- a light source;
- a light guiding component disposed adjacent to the light source and comprising a discontinuous surface, the discontinuous surface being formed on an outer surface of the light guiding component, the light guiding component being adapted to project a beam emitted from the light source onto an object to form an illuminating pattern spotted by the discontinuous surface;
- an image sensor adapted to capture an image about the object;
- and
- a processor electrically connected with the image sensor and utilized to analyze position variation of a spot formed by the discontinuous surface within the image for determining a distance of the object.
A distance detection device, comprising:
- a light source;
- a light guiding component disposed adjacent to the light source and comprising an illuminating surface, a beam emitted from the light source passing through the illuminating surface and being projected onto an object to form an illuminating pattern;
- an image sensor having a capturing region and adapted to capture an image about the object, the capturing region being an area about the object where the image sensor senses, dimensions of the illuminating pattern being smaller than dimensions of the capturing region;
- and
- a processor electrically connected with the image sensor and utilized to analyze position variation of the illuminating pattern within the image for determining a distance of the object.
A distance detection device, comprising:
- a light source;
- a light guiding component disposed adjacent to the light source and comprising an illuminating surface, a beam emitted from the light source passing through the illuminating surface and being projected onto an object to form an illuminating pattern;
- an image sensor having a capturing region and adapted to capture an image about the object, an overlapping scale of the illuminating pattern to the capturing region being varied according to a distance of the object;
- and
- a processor electrically connected with the image sensor and utilized to analyze the overlapping scale for determining the distance of the object;
- wherein the distance of the object is switched between a first threshold and a second threshold to adjust the overlapping scale.
Dependencies are inferred from the claim text.