To improve productivity and to reduce a manufacturing cost by eliminating necessity of forming a mask, removing the mask, cleaning or the like to reduce number of steps when manufactured and constituting an apparatus for realizing an efficient manufacturing method.

The method for manufacturing a microlens comprises the steps of first previously surface treating a substrate 20 (a surface treating step a), and then dropping a liquid droplet 22 made of an uncured resin from a discharge head 21 on a surface 20a of the substrate 20 (a liquid droplet adhering step b). Then, the droplet 22 having a surface protruding in a protruding curved surface state by wettability of the uncured resin or a surface tension of the resin to the surface 20a is adhered to the surface 20a. The droplets 22 arranged on the surface 20a are cured to form microlenses 23 (a resin curing step c).