a method of manufacturing a lens array includes the steps of feeding a first curable resin between a first array mold and a plate member and curing the first resin ; separating the plate member from the first array mold ; feeding a second curable resin between the first array mold and a second array mold while leaving the cured first resin on the first array mold , and curing the second resin ; and removing the first array mold and the second array mold .