Patent ID: 7294823
Filing Date: 2007-11-13
Classification: G01D

Abstract:
1. A method for detecting a position, the method comprising the steps of: providing a compartment having a body defining an interior wherein the body has an interior surface and a length wherein the length is defined between a first end and a second end wherein the compartment has a first wall at the first end wherein the first wall abuts the body of the compartment; connecting a movable element to the compartment wherein the movable element is located at a first position with respect to the first wall; connecting a base to the interior surface of the compartment wherein the base has a first side and a second side opposite to the first side wherein the first side of the base faces the first end of the compartment and the second side of the base faces the second end of the compartment; emitting a light from the first side of the base; and detecting an intensity of emitted light within the interior from the second side of the base.