Microlenses Array For Beam Shaping And Homogenization

摘要

The present invention is an optical substrate; A microlens array composed of a plurality of microlenses distributed in random order on one surface of the optical substrate, wherein the plurality of microlenses are squares with a length of one side of a bottom surface of 20 μm to 70 μm, and a sag profile of the following equation (1) ( sag profile), and the microlens array is divided into a plurality of unit blocks of a rectangular shape having a side length of 190 μm to 280 μm, combined with a plurality of single lens cells. , To a microlens array for light shaping and homogenization characterized in that it is a rectangular template combined with a plurality of unit blocks. Equation (1) z: Height value (sag value) for the x,y position of a single lens c: Curvature by axis of a single lens (x-curvature, y-curvature κ: Aspheric coefficient of a single lens (conic constant) x ₁ and y ₁ are weight values in the x- and y-axis directions