Aiming device for a firearm

An aiming device for a firearm comprising:

• a housing adapted to be affixed to the firearm
• a package affixed in the housing and comprising three separate light emitters configured to emit light along an optical axis in alignment with a bore axis of a barrel of the firearm, wherein the first light emitter is configured to emit visible light, the second light emitter is configured to emit infrared light, and the third light emitter is configured to emit ultraviolet light;
• a collimator affixed in the housing and configured to collimate the visible light at a first distance from a point on the package, the infrared light at a second distance from the point, and the ultraviolet light at a third distance from the point;
• wherein the collimator causes the visible light to be collimated into a first laser at the first distance passing through the collimator, the collimator causes the infrared light to be collimated into a second laser at a second distance passing through the collimator, and the collimator causes the ultraviolet light to be collimated into a third laser at a third distance passing through the collimator;
• a positioner to position the collimator under operator control at any one of a first position, a second position and a third position, wherein the first position corresponds to the first distance, the second position corresponds to the second distance, and the third position corresponds to the third distance;
• wherein only one of the light emitters generates light at a time;
• and
• wherein the light emitters and the collimator are adapted such that:
• the first light emitter generates the visible light when the compound collimator is in the first position,
• the second light emitter generates the infrared light when the compound collimator is in the second position, and
• the third light emitter generates the ultraviolet light when the compound collimator is in the third position.