Patent ID: 7438438

Claim:
A motion-activated decorative lighting fixture, comprising: a motion detector housing disposed to form an integral part of the lighting fixture, said housing including a vertically extending exterior wall around said housing, and said wall having an array of elongate vertically extending slots therethrough horizontally spaced apart from one another and extending along at least a portion of said wall; one or more PIR sensors disposed within said housing; a segmented Fresnel lens array disposed within said housing to direct infra-red energy from a monitored field of view to said one or more sensors, said lens array including a plurality of columns of lenslets wherein said plurality of columns includes at least two sets of columns, the columns of a first set alternating with the columns of a second set, and at least a portion of the columns of each set comprise at least two lenslets disposed one above the other; said lens array and said wall being mounted for relative rotary movement with respect to one another between at least a first position and a second position; and wherein said columns and said slots are disposed such that in said first position each column of said first set is aligned with a corresponding slot from said array of slots and the columns of said second set are substantially blocked by said wall, and in said second position each column of said second set is aligned with a corresponding slot from said array of slots and the columns of said first set are substantially blocked by said wall; whereby the lenslets of the columns of said first and second sets define alternative fields of view.