Patent ID: 8950896
Filing Date: 2015-02-10
Classification: F21S,F21V,F21Y,G01N

Abstract:
1. An illumination apparatus comprising: a plurality of lenses; a first casing that has a radiation plane provided with a plurality of annularly arranged windows for attaching said plurality of lenses, respectively, independently, and that has an opening at a position opposite to said radiation plane; a first substrate associated with each of said plurality of lenses and accordingly disposed, said first substrate each having at least one light emitting device mounted thereon; and a second casing closing said opening of said first casing, wherein: said first casing includes a holding portion associated with each of said plurality of windows; and said holding portion each permits said lens to be attached to said first casing from a side thereof having said opening and also restrains said lens from moving through said first casing toward said radiation plane, and when said lens is attached to said first casing said lens has an optical axis in a direction having a predetermined angle relative to a center axis of said first casing.