Patent ID: 9211758
Filing Date: 2015-12-15
Classification: B43K

Abstract:
1. A pencil, comprising: a pencil casing formed of a sharpenable casing material, said pencil casing having a rear end, a forward end, and a central receiving bore formed therein extending in a longitudinal direction defined by said pencil casing; a core disposed in said central receiving bore of said pencil casing; at least one optical fiber at least partially surrounded by said casing material of said pencil casing and extending in the longitudinal direction, said at least one optical fiber being made of a sharpenable material and having a light entry surface disposed at said rear end of said pencil casing and a light exit surface at said forward end of said pencil casing; and a light source disposed at said rear end of said pencil casing and configured to inject light at said light entry surface, wherein light exits at said light exit surface of said optical fiber at said forward end of said pencil casing.