The invention discloses a manufacturing method of a multi-channel light filtering
micro lens array. According to the manufacturing method of the multi-channel light filtering
micro lens array, due to the facts that a light filtering layer with the light filtering function is manufactured on a substrate by using
photoresist with different colors and combining a traditional photoetching method, and then the micro convex
lens array is directly manufactured on the light filtering layer through a hot melting method, the purpose that micro convex lenses have the integrated light filtering function can be achieved, additional
optical filter structures are not needed, and development of the compact multi-channel light filtering micro lenses is achieved; a plurality of optical channels are arranged, and each optical channel can independently obtain image information of the corresponding
wave band; due to the facts that the photoetching technology is adopted, and a first
mask plate is used in cooperation, alignment between optical filters and the
micro lens array is avoided; due to the fact that a
light barrier layer is additionally arranged between every two adjacent micro convex lenses on the substrate, influence caused by incident
stray light on the micro lenses can be reduced; the micro convex
lens array can be applied to a multispectral imaging
system, and
monochrome imaging and color reconstruction are achieved; meanwhile, the micro convex
lens array is compact in structure, and
miniaturization of the multispectral imaging
system is facilitated.