Patent ID: 7083902

Claim:
A method for fabricating supersphere solid immersion lens, which comprises the steps of: a) coating a positive photoresist layer on a substrate; b) applying a first mask on the positive photoresist layer, transferring a first pattern of the first mask on the positive photoresist layer, and forming a first photoresist pattern on the positive photoresist layer by a first exposure; c) applying a second mask on the positive photoresist layer, transferring a second pattern of the second mask on the positive photoresist layer, and forming a second photoresist pattern on the positive photoresist layer by a second exposure, the second pattern of the second mask is transferred to predetermined areas of the positive photoresist layer by aligning the second mask relative to the first photoresist pattern; d) forming a positive photoresist micro-structure by dissolving portions of the positive photoresist layer exposed by the first exposure and the second exposure by dipping the substrate and the positive photoresist layer in a developer; and e) forming a supersphere solid immersion lens (SSIL) structure by performingz a reflow process on the positive photoresist micro-structure.