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US 6,786,626 B2Granted
Linear light source device for image reading
AssigneePixon Technologies Corp.
InventorsRong Yaw Wu, Ming Jen Pang
Life of this patent
Estimating the term…
Abstract
A linear light source device is provided having a main body that includes at least a light-guided bar and a light source assembly. The light-guided bar is a polygonal column with one striped surface forming, a reflective plane. The plane the opposite to reflective plane is a light-exiting plane having a convex profile, with the remaining planes being reflective planes. At least one of the ends of the polygonal column is an incident plane for a light beam to enter. The light beam is uniformly transmitted through the convex-shaped light-exiting plane.
Claims15
A linear light source device comprising:
- a light source assembly comprising a non-closed mounting plane, at least a reflective end plane;
- at least a positioning plane, and at least a light-emitting diode (LED) mounted on the reflective end plane;
- and
- a light-guided bar including a polygonal column, at least a light-exiting plane, a reflective plane, and a plurality of reflective layers and further including at least a tail end plane of said light-guided bar being an incident plane for light beam to enter, wherein at least two planes in opposite locations of said light-guided bar being the reflective plane with surface stripes and a corresponding light-exiting plane, and the other planes being reflective layers with reflecting function so that the light beam transmitting into the incident plane and through the transmission of the polygonal main body as well as the multiple reflection of the reflective planes can transmit out of the light-exiting plane with relatively uniform light beam.
1 more element
Dependencies are inferred from the claim text.