In　fiber　coupling　system　of　diode　laser　bars,　directivity　deviation　of　emitters　deteriorates　the　beam　shaping　seriously,　thus　leading　to　the　degradation　of　fiber　coupling　efficiency.　In　order　to　solve　this　problem　properly,　in　this　paper,　a　wedge-shaped　lens　with　calibrated　angle　is　proposed　to　compensate　the　directivity　deviation　of　the　emitters　and　then　improve　the　directivity　of　the　laser　beam　and　shaping　effect.　Both　ZEMAX　simulation　and　experiments　are　conducted.　The　results　show　that　significant　improvements　of　the　beam　shaping　are　obtained　by　using　such　wedge-shaped　lens　with　calibrated　angle.　The　beam　parameter　products(BPPs)　calculated　in　the　fast　and　slow　axis　are　7.25　mm•mrad　and　5.05　mm•mrad　respectively,　and　the　focal　spot　dimension　is　148　μm×135　μm(with　90%　energy　enclosed).　After　coupled　the　laser　beams　into　a　standard　fiber　with　200　μm　core　diameter　and　0.2　numerical　aperture(NA),　the　output　power　is　measured　to　be　53　W　and　the　electrical-to-optical　conversion　efficiency　is　47%　at　the　inject　current　of　60　A.　Finally,　the　fiber　coupling　efficiency　of　87%　is　achieved,　increased　by　7%　compared　to　that　of　the　conventional　wedge-shaped　lens.　©　2021,　Science　Press.　All　right　reserved.