Dual focal plane reticles for optical sighting devices
A dual focal plane optical sighting device, such as a riflescope, having two focal planes, with a first reticle at the first focal plane, and a second reticle at the second focal plane. The reticle at the first focal plane is a glass etched reticle; the reticle at the second focal plane is a wire reticle. The two reticles have different patterns or markings providing the appearance of a single reticle or complementary markings when viewed through the optical sighting device.
1. An optical sighting device comprising:
a body with a first end and a second end and having a center axis;
an objective lens system disposed within the body;
an eyepiece lens disposed within the body;
an erector lens system disposed within the body; the objective lens system, eyepiece lens, and erector lens system forming an optical system having a first focal plane and a second focal plane;
a first reticle at the first focal plane having at least one subtension marking and no stadia lines;
a second reticle at the second focal plane having horizontal and vertical stadia lines; and
wherein the first reticle and the second reticle provide the appearance of a single reticle when viewed along the center axis.
2. The optical sighting device of claim 1 , wherein the first reticle is a glass etched reticle.
3. The optical sighting device of claim 2 wherein the first reticle includes mil dot markings.
4. The optical sighting device of claim 1 , wherein the first reticle includes at least one number.
5. The optical sighting device of claim 1 , wherein the first reticle has a pattern of markings.
6. The optical sighting device of claim 1 , wherein the first reticle includes at least one target dot.
7. The optical sighting device of claim 6 , wherein the at least one target dot is illuminated by an LED.
8. The optical sighting device of claim 1 , wherein the first reticle is an electronic reticle.
9. The optical sighting device of claim 1 , wherein the first reticle is a wire reticle.
10. The optical sighting device of claim 8 further comprising memory for storing multiple reticle patterns for display on the electronic reticle.
11. The optical sighting device of claim 1 , wherein the second reticle is a glass reticle.
12. The optical sighting device of claim 1 , wherein the second reticle is an electronic reticle.
13. The optical sighting device of claim 1 , wherein the second reticle is a wire reticle.