Patent ID: 8556453

Claim:
A method of manufacturing a fluorescent luminaire, comprising: forming a luminaire housing; forming a lens frame by combining opposed side frame members with opposed end frame members into a substantially rectangular form; providing said end frame members each with a planar wall, each planar wall having a straight lower edge and an upper concave curvilinear edge having an arc length; providing said side frame members each with a seating shoulder; positioning said lens frame within said luminaire housing; positioning a flat lens having two sides and two ends in said lens frame, wherein said flat lens has an un-bent horizontal length between said two sides which is greater than a horizontal length between said seating shoulders of said side frame members; bending said flat lens into a curved convex configuration such that said two sides of said flat lens respectively engage said seating shoulders of said side frame members and such that said two ends of said flat lens respectively conform to said upper concave curvilinear edges of said end frame members, wherein said flat lens is retained by said lens frame in said curved configuration.