Patent ID: 7640691

Claim:
A weapon comprising: a firearm for firing bullets at a target; a sight comprising: a connector for mounting the sight to the firearm; a housing coupled to said connector, said housing having a first window and a second window generally opposing said first window at another end of said housing and a third window, said first and second windows adapted to provide a line-of-sight view of said target along a line-of-sight axis and said third window permitting a side view from said housing of said target along a side axis; and an optical element situated in the housing for receiving a beam in said first window and for splitting said beam into a plurality of optical paths so that said target can be viewed by the user along said line-of-sight axis through said second window or along said side axis through said third window, said second window providing a direct line of sight to said target, wherein said optical element comprises a penta prism beam splitter; wherein said connector is adapted to pivotably mount the housing to the weapon, other sight or pointing device such that after mounting, said third window pivots or moves along an arc about said line-of-sight axis to permit a position of said third window to be changed so that a user can view the target from a plurality of positions along said arc; said side axis being non-parallel to said line-of-sight axis and said third window having a lens or window surface that is open to atmosphere so that a user may look directly through said third window and view the target along said side axis.