Door frame troffer

A lighting troffer, comprising:

• a back reflector;
• a door frame removably connected to the back reflector defining an opening having a length and a width;
• a plurality of light bars spanning, at least partially, at least one of the width and the length of the opening of the door frame, each of the plurality of light bars having a first end and a second end connected to the door frame to thereby support the plurality of light bars on the door frame, each of the plurality of light bars having a mount surface for supporting a plurality of light emitters;
• the plurality of light emitters on the mount surfaces of the plurality of light bars, the plurality of light emitters emitting light toward the hack reflector;
• at least one lens plate supported by the light bar and the door frame covering the opening
• wherein a region between the plurality of light emitters and the back reflector defines a mixing chamber for mixing the light emitted by the plurality of light emitters.

A lighting troffer, comprising:

• a back reflector;
• a door frame defining an opening having a length and a width, wherein the door frame is pivotably connected to the back reflector such that the door frame is movable between a first position where the door frame is spaced from the back reflector and a second position where the door frame defines a lower perimeter of the lighting troffer;
• at least one light bar comprising a mount surface for supporting a plurality of light emitting diodes, the at least one light bar having a first end and a second end, wherein the at least one light bar partially spanning at least one of the length and the width of the opening;
• wherein the first end and a second end are spaced from the door frame;
• the plurality of light emitters on the mount surface, the plurality of light emitters emitting light toward the back reflector;
• and
• at least one lens plate connected to and extending from the door frame, the at least one lens plate connected to and supporting the at least one light bar, wherein the at least one lens plate covers the opening of the door frame, wherein a region between the mount surface and the back reflector defines a mixing chamber for mixing the light emitted by the plurality of light emitters.