Patent ID: 7988334

Claim:
An illuminating device with an adjustable illumination range, comprising: a housing; a light source module positioned in the housing for emitting light having an initial illumination range; and a plurality of replaceable optical elements for respectively converting the initial illumination range into different outputting illumination ranges, each of the optical elements being selectively detachably mountable to the housing for achieving a desired illumination range, wherein the optical elements include a lens array comprising a plurality lens elements arranged in an array, each of the lens elements comprising: a main body which has a light incident surface and an opposite light emitting surface; a light diverging portion formed on one of the light incident surface and the light emitting surface for diverging the light from the light source module along a first direction; and a light converging portion formed on another one of the light incident surface and the light emitting surface for converging the light from the light source module along a second direction, an angle defined between the first direction and the second direction being an acute angle or a right angle.