Patent Number: 063317117
Section: claims

1. A method of imaging a pattern on a sensitive substrate using a lithographic apparatus, comprising the acts of: determining selected dimensional variations in patterning by the lithographic apparatus;  scanning the pattern onto the substrate using the lithographic apparatus at a predetermined addressing grid spacing;  additionally scanning the substrate at an addressing grid spacing greater than in the act of scanning, and at a lower intensity that in the act of scanning, thereby correcting for the determined dimensional variations. 2. The method of claim 1, wherein the act of scanning comprises vector or raster scanning a beam across the substrate. 3. The method of claim 2, wherein the beam is of light or charged particles. 4. The method of claim 2, wherein a diameter of the beam in the act of additionally scanning is greater than in the act of scanning. 5. The method of claim 1, wherein the act of additionally scanning precedes the act of scanning. 6. The method of claim 1, wherein the act of determining comprises the act of determining theoretically or by experimentation. 7. The method of claim 1, wherein the dimensional variations are a function of location on the substrate. 8. The method of claim 7, wherein the function is of a radial location on the substrate. 9. The method of claim 1, wherein the act of determining comprises the act of expressing the function as a polynomial, and wherein the act of additionally scanning comprises the act of scanning in accordance with the polynomial. 10. The method of claim 1, wherein the addressing grid spacing for the act of additionally scanning is at least twice that of the addressing grid spacing for the act of scanning. 11. The method of claim 1, wherein the act of additionally scanning comprises the act of modulating an intensity of the exposure.