Patent ID: 7310411

Claim:
A method of manufacturing at least a portion of a focused grid or focused collimator, having at least one layer comprising a plurality of walls defining openings therein, and being adaptable for use with an electromagnetic energy emitting device, the method comprising the steps of: placing a photoresist material onto a substrate base; covering the photoresist with a mask comprising a plurality of apertures therein; irradiating the mask and the photoresist material with rays of energy from a point source, wherein at least some of the rays of energy enter at least some of the plurality of apertures in the mask and strike portions of the photoresist material; removing the portions of the photoresist material that were not irradiated by the rays of energy to create openings in the photoresist material; and placing a wall material in the openings in the photoresist material to form walls of a focused grid or focused collimator.