Patent attributes
System and method for an optical position sensor architecture for use in servo systems. A preferred embodiment comprises a light source configured to produce a light with an intensity dependent upon a control signal, a first light sensor and a second light sensor positioned adjacent to one another, each light sensor configured to produce a current based upon an amount of light incident upon each light sensor. The preferred embodiment also comprises a slotted device coupled to the load and positioned between the light source and the first light sensor and the second light sensor. The slotted device regulates an amount of light striking the first light sensor and the second light sensor based upon a position of the load. The slotted device features a slot that has a radius with a linearly increasing radius as a function of rotation angle so that the optical position sensor has linear behavior.
