Patent ID: 7379182
Filing Date: 2008-05-27
Classification: B60K,G01D,G01P

Abstract:
1. A pointer apparatus for gauges, comprising: a pointer needle comprising a substantially transparent material and rotatably mounted on a character plate, the pointer needle further comprising a reflective film attached to a first section of a surface thereof; a step motor mounted below the character plate and configured to rotate the pointer needle; a micro computer to control the driving of the step motor; at least one needle-illuminating light mounted below a rear end portion of the pointer needle; at least one character plate-illuminating light mounted below the character plate; and a polarizer film attached to a second section of the surface of the pointer needle and comprising selective permeability and non-permeability characteristics with respect to light depending on whether or not current is supplied thereto, wherein the micro computer is configured to selectively control whether current is applied to the polarizer film, depending on a rotational position of the pointer needle.