Patent ID: 7394594
Filing Date: 2008-07-01
Classification: G02B

Abstract:
1. A method of optically processing a pulsed laser beam to create apertures in a layer on a back side of a substrate that includes a microlens array on a front side thereof, the method comprising: impinging the pulsed laser beam through the microlens array on the front side of the substrate and onto the layer on the back side of the substrate, wherein the substrate that includes the microlens array on the front side thereof and the layer on the back side thereof is configured for visible light applications and wherein the pulsed laser beam is a pulsed laser beam having longer wavelength than visible light; and wherein impinging the pulsed laser beam onto the layer on the back side of the substrate through the microlens array on the front side of the substrate comprises passing the pulsed laser beam through a layer on the microlens array that has different index of refraction than the microlens array, prior to entering the microlens array.