Sharp NP30ZL Sharp NP30ZL projection lens NP-PA500U NP-PA500U-R NP-PA500X NP-PA500X-R NP-PA521U NP-PA521U-R NP-PA550W NP-PA550W-R NP-PA571W NP-PA571W-R NP-PA600X NP-PA600X-R NP-PA621X NP-PA621X-R NP-PA622U NP-PA62