Patent ID: 8671611

Claim:
An optical aiming device comprising; a base part comprising means for attaching said aiming device to an object; a mirror; a light source, said light source being arranged to project light on said mirror, wherein said mirror is arranged to reflect or redirect at least parts of said light in a first direction, said projected light forming a reticle having a first light intensity; an ambient light sensor arrangement, said ambient light sensor arrangement being arranged to cooperate with said light source to enable adjustment of the light intensity of said reticle to a second light intensity as a function of a sensed parameter of said light sensor arrangement; wherein that said light sensor arrangement comprises at least one lens having at least one convex surface and at least one detector comprising an effective detector area, wherein said detector is arranged at a distance from said lens and that said effective detector area of said detector is adapted so as to detect light from a predetermined area at a predetermined distance from said lens, said predetermined area is external to said light sensor arrangement.