Patent ID: 8576460
Filing Date: 2013-11-05
Classification: H04N

Abstract:
1. A surface reading device for reading an image on a target-surface, comprising: a light source adjacent an optical sensor; a separator structure bisecting a space between the light source and optical sensor to isolate the light source from the optical sensor, the separator structure having a first surface defining a first side, and having a second surface defining a second side, said second side being opposite said first side, the light source being on the first side and the optical sensor being on the second side; a first light guide on the first side of the separator structure, the first light guide having a first light-incident end facing the light source, a first light-emission end angled toward the target surface to emit light toward the target surface at an acute angle relative to the target surface, and a first light-channel to convey light from its first light-incident end to its first light-emission end; a first aperture facing the target surface and positioned to receive reflected light emitted from the first light-emission end of the first light guide and reflected from the target surface, the first aperture passing the reflected light from the first side of the separator structure to the second side of the separator structure; a second light guide on the second side of the separator structure, the second light guide having a second light-incident end facing the first aperture to receive the reflected light passed by the first aperture, a second light-emission end facing the optical sensor, and a second light-channel to convey light from its second light-incident end to its second light-emission end, wherein the second light guide provides the optical sensor an erect image of the image on the target-surface.