Optical reflex sight with reinforced frame
Optical sights for mounting on a firearm are provided, each of the sights having a base defining a barrel end and a rear end; a frame extending upwardly from the base at the barrel end and defining an opening; an optical element received in the opening; and an illumination device operable to display an aiming point on the optical element to generate said aiming point.
1. An optical reflex sight for mounting on a firearm comprising:
a base defining a barrel end and a rear end;
a frame extending upwardly from the base at the barrel end and defining an opening;
an optical element received in the opening; and
an illumination device operable to display an aiming point on the optical element to generate said aiming point;
wherein the frame comprises upstanding side walls and a top wall comprising a crossbar and an upper surface, a lower surface that contacts the optical element, wherein the crossbar and the upper surface define a cavity therebetween within the top wall, and wherein a bore extends though the frame at a corner portion thereof at an intersection of the side wall and the top wall.
2. The optical sight of claim 1 , wherein the upper surface of the frame defines a curved, faceted or triangular configuration.
3. The optical sight of claim 1 , wherein the cavity defines a center height greater than the height of the side portions.
4. The optical sight of claim 1 , wherein the cavity is filled with rubber or urethane.
5. The optical sight of claim 1 , further comprising an iron sight comprising
a forward post sight mounted at the barrel end of the base; and
a rear sight defined by a channel recessed in an upper surface of the base at the rear end of the base and aligned with the forward post sight.
6. The optical sight of claim 5 , wherein the forward post sight is removable from the base.
7. The optical sight of claim 6 , wherein the forward post sight is secured to the base by screws.
8. The optical sight of claim 1 further comprising
a hood adapted to removably cover a rear-facing side of the optical element and the illumination device, the hood comprising a transparent panel for viewing the optical element therethrough.
9. The optical sight of claim 8 , the hood further comprising an iron sight.
10. The optical sight of claim 9 , wherein the iron sight is substantially aligned with a rear sight defined by a channel recessed in an upper surface of the base at the rear end of the base.
11. The optical sight of claim 10 , wherein the iron sight is disposed inside the transparent panel.
12. The optical sight of claim 10 , wherein the iron sight is disposed outside the transparent panel.
13. The optical sight of claim 8 , wherein the hood is removably attached to the frame by screws and the hood is removably attached to the base by cam locks.
14. The optical sight of claim 1 further comprising an ambient light sensor controlling the brightness of the illumination device and an optical fiber connected to the sensor and having an inlet at the barrel end of the base.
15. An optical reflex sight for mounting
on a firearm comprising:
a base defining a barrel end and a rear end;
a frame extending upwardly from the base at the barrel end and defining an opening;
an optical element received in the opening; and
an illumination device operable to display an aiming point on the optical element to generate said aiming point wherein the frame comprises upstanding side walls, and a crossbar extending between the side walls and defining a top surface of the frame and wherein a bore extends though the frame at a corner portion thereof at an intersection of the side wall and the top wall; and further comprising a frame hood for mounting over the top surface of the frame, the frame hood and the top surface defining a cavity therebetween.
16. The optical sight of claim 15 , wherein the frame hood further comprises an arched internal wall to distribute an impact load to the side walls.
17. The optical sight of claim 15 , wherein the outer surface of the frame hood defines a dome-shaped, convex, pyramidal, or blister shape.
18. An optical reflex sight for mounting
on a firearm comprising:
a base defining a barrel end and a rear end;
a frame extending upwardly from the base at the barrel end and defining an opening;
an optical element received in the opening; and
an illumination device operable to display an aiming point on the optical element to generate said aiming point wherein the frame comprises
a pair of side walls extending upward from the base comprising a forward wall portion having a first width and a rear wall portion having a second width, the second width smaller than the first width;
an upper wall extending between the side walls and defining a flat upper portion and a curved lower portion; and
wherein a bore extends though the frame at a corner portion thereof at an intersection of the side wall and the top wall.
19. The optical sight of claim 18 , wherein the upper wall extends towards the barrel end to define a hood adapted to partially shield the optical element.