Patent ID: 8382472

Claim:
A light curing device ( 10 ), comprising a light source ( 20 ) which is accommodated in a stick-like compact handheld housing comprising a cylindrical portion ( 36 ) which terminates in a hemispherical end ( 14 ) and which has a light exit in the form of an arcuate window ( 44 ) of a substantially slit-like form through which light in the form of a light beam leaves the housing, the window ( 44 ) extending parallel to the longitudinal axis of the light curing device ( 10 ), and also laterally in relation to the latter, an adjustable position lens ( 30 ) and a variable position reflective surface ( 32 ) being mounted in the housing, and wherein the direction of the light beam is continuously variable by movement of the adjustable position lens ( 30 ) and/or the variable position reflective surface ( 32 ), whereby the light beam may exit through the window either straight forward or at right angles to the cylindrical portion, respectively, wherein the arcuate window ( 44 ) extends over an angle greater than 120°, the arcuate window ( 44 ) is asymmetrical and extends upwards to a top of the window at a 45° position and extends to a bottom of the window over the entire hemispherical end and a few millimeters beyond the hemispherical end towards the rear of the device so that light may exit upwardly as well as straight forward and at a right angle.