Abstract: A luminaire includes a body, with first and second surfaces that define an elongate interior cavity between the first and second surfaces, the elongate interior cavity being sized to receive one or more elongate light sources; an elongate lens that is removably securable to the body to at least partially cover the elongate interior cavity; and at least one lens retainer disposed at a first end of the elongate interior cavity, where the lens retainer includes a frame including a first frame end and a second frame end, at least a first spring lever disposed between the first and second frame ends, where the at least first spring lever is biased towards a second end of the elongate interior cavity that is opposite the first end of the elongate interior cavity; where the elongate lens is snugly retainable on the body using the bias provided by the spring lever.

Abstract: A luminaire (100) and a lens retainer (160) are disclosed. Such a luminaire may include: a body (110), with first and second surfaces (115, 120) that define an elongate interior cavity (125) between the first and second surfaces, the elongate interior cavity being sized to receive one or more elongate light sources(130i-n); an elongate lens (135) that is removably securable to the body to at least partially cover the elongate interior cavity; and at least one lens retainer (160) disposed at a first end (127) of the elongate interior cavity, where the lens retainer includes: a frame (165) including a first frame end (167) and a second frame end (169), at least a first spring lever (170) disposed between the first and second frame ends, where the at least first spring lever is biased towards a second end of the elongate interior cavity that is opposite the first end of the elongate interior cavity; where the elongate lens is snugly retainable on the body using the bias provided by the spring lever.

Abstract: The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).

Abstract: The invention provides a troffer-based lighting arrangement (100) comprising a troffer, a lighting window (140), and a lighting window retainer (150) configured to retain said lighting window (140) attached to said troffer, wherein the lighting window retainer (150) comprises a part (151) configured to host part of said lighting window (140), and wherein the lighting window retainer comprises a retainer opening (152), wherein the troffer comprises a troffer opening (132), and wherein the retainer opening (152) and the troffer opening (132) are configured in gaseous communication with each other.

Abstract: The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.