As　the　entrance　to　the　metaverse,　the　near-eye　display　(NED)　technology　based　on　naked　eye　three-dimensional　(3D)　display　can　transform　how　people　interact　with　digital　information　as　a　possible　next-generation　display.　Depth　of　field　(DoF)　is　an　essential　indicator　for　viewers　to　explore　3D　display　scenarios,　but　traditional　devices　for　improving　the　DoF　of　integral　imaging　(II)　naked　eye　3D　display　cannot　be　well　incorporated　with　a　high-　integrated　NED.　To　improve　II＇s　DoF　for　NED,　we　propose　triple-focal-length　microlens　array　(TFL-MLA)　with　a　honeycomb　layout.　The　TFL-MLA　is　fabricated　utilizing　multilayer　photolithography　and　thermal　reflow.　Microlenses　with　varying　focal　lengths　are　achieved　on　a　single　glass　wafer　using　three　photomasks　with　alignment　marks.　The　results　indicate　that　multi-layer　microlenses　can　be　precisely　positioned　with　alignment　marks.　Furthermore,　altering　the　thickness　of　the　photoresist　enables　height　control　in　the　TFL-MLA.　The　prepared　TFL-MLA　has　good　morphology,　with　a　diameter　of　approximately　208.3　f　2.6　mu　m　and　three　heights　of　28.8　f　0.7　mu　m,　23.1　f　0.6　mu　m,　and　13.7　f　0.3　mu　m.　The　TFL-MLA　provides　excellent　focusing　and　imaging　in　three　focal　planes　(focal　lengths　of　368.8　mu　m,　441.1　mu　m,　and　701.6　mu　m).　As　a　proof-of-concept,　a　DoF-enhanced　NED　system　based　on　II　utilizing　the　TFL-MLA　is　implemented,　allowing　a　clear　presentation　of　3D　objects　in　various　center　depth　planes.　The　proposed　NED＇s　DoF　has　increased　from　154　mm　to　541.8　mm.　This　TFL-MLA　is　anticipated　to　promote　the　evolution　of　NED　with　diverse　DoF,　boosting　the　development　of　the　metaverse.