Patent ID: 7344278

Claim:
A luminaire having a lamp and a reflector that is rotational about an axis of rotation, comprising: a) a luminaire housing with two longitudinal ends; b) a lamp with a longitudinal axis and a first and second end; c) a reflector for a fluorescent lamp; the reflector being received in the luminaire and having two longitudinal ends; d) an interior of a longitudinal end of a luminaire housing and a longitudinal end of the reflector having first and second arrangements, respectively, or second and first arrangements, respectively; i) the first arrangement comprising: (1) a circular arc-shaped recess defined between a pair of spaced arc-shaped walls; the recess opening axially with respect to said longitudinal axis; and (2) a projection; ii) the second arrangement comprising: (1) first and second parts protruding axially with respect to said longitudinal axis; and (2) the first part being received in an associated recess of the first arrangement; and (3) the second part having a circular arced, toothed surface concentric with said associated recess; e) the recess being for guiding rotation of the reflector after receiving the first part; and the associated projection engaging a respective one of a plurality of cavities of the toothed surface to secure the reflector in a respective one of a plurality of rotational positions.