Riflescope with feedback display and related methods
A riflescope having a display that provides information to a user of the riflescope, along with related methods, is provided herein. In one embodiment, a riflescope includes an objective system and an ocular system, wherein a focal plane is defined between the objective system and the ocular system. A display system, comprising a display and a mirror, is positioned at a location between the focal plane and the ocular system. In one embodiment, the distance between the focal plane and the ocular system is equal to a sum of a distance between the display and the mirror and a distance between the mirror and the ocular system.
1. A riflescope, comprising:
a main tube;
an objective lens coupled to a first end of the main tube;
ocular lenses coupled to a second end of the main tube, the objective lens and the ocular lenses defining a first focal plane and a second focal plane; and
a display system disposed between the ocular lenses and the second focal plane, the display system comprising a display and a reflective element, the display system configured to project an image to the ocular lenses, wherein:
the ocular lenses are positioned closer to the second focal plane than the first focal plane;
the ocular lenses comprise a first ocular lens and a second ocular lens, the second ocular lens being positioned farther away from the second focal plane than the first ocular lens;
the second focal plane is positioned a first distance from the first ocular lens;
the display is positioned an effective distance from the first ocular lens, the effective distance defining a folded optical path configured to render the image perceivable to a user of the riflescope, and the effective distance being substantially equivalent to the first distance; and
the display and the reflective element are disposed on a common side of an optical axis extending from the objective lens through the ocular lenses.
2. The riflescope of claim 1 , wherein the display is configured to emit light in a direction that is substantially perpendicular to an optical axis of the riflescope.
3. The riflescope of claim 1 , wherein the reflective element is oriented at an angle of approximately 45° relative to the display.
4. The riflescope of claim 1 , wherein the reflective element is a prism, a beam splitter, or a mirror.
5. The riflescope of claim 1 , wherein the folded optical path extends from the display to the reflective element and from the reflective element to the ocular lenses.
6. The riflescope of claim 1 , wherein the image includes information for the user, the information including a distance to a target, an atmospheric condition, or an environmental condition.
7. A riflescope comprising:
a main tube;
an objective lens coupled to a first end of the main tube;
one or more ocular lenses coupled to a second end of the main tube, the objective lens and the one or more ocular lenses defining a first focal plane and a second focal plane; and
a display system disposed between the one or more ocular lenses and the second focal plane, the display system comprising a display and a reflective element; wherein:
the one or more ocular lenses are positioned closer to the second focal plane than the first focal plane;
the second focal plane is positioned a first distance from the one or more ocular lenses;
the display is positioned a second distance from the reflective element; the display being positioned along a bottom interior surface of the main tube;
the reflective element is positioned a third distance from the one or more ocular lenses, the reflective element being positioned above an optical axis extending longitudinally through a center of the main tube, the reflective element being positioned adjacent to a top interior surface of the main tube opposite the bottom interior; and
a sum of the second distance and the third distance is approximately equal to the first distance.
8. The riflescope of claim 7 , wherein:
the one or more ocular lenses comprise a first ocular lens and a second ocular lens, the second ocular lens being positioned farther away from the second focal plane than the first ocular lens; and
the third distance extends from the reflective element to the first ocular lens.
9. The riflescope of claim 7 , wherein the reflective element is a prism, a beam splitter, or a mirror.
10. The riflescope of claim 7 , further comprising a reticle disposed within the first focal plane.
11. The riflescope of claim 7 , wherein the display comprises an organic light-emitting diode (OLED), a liquid crystal (LC), an e-ink, a plasma, a light emitting diode (LED), or quantum dots.
12. A riflescope comprising:
a main tube;
an objective lens coupled to a first end of the main tube;
one or more ocular lenses coupled to a second end of the main tube, the objective lens and the one or more ocular lenses defining a first focal plane and a second focal plane; and
a display system disposed between the one or more ocular lenses and the second focal plane, the display system comprising a display and a reflective element, the display system configured to project an image to the one or more ocular lenses, wherein:
the one or more ocular lenses are positioned closer to the second focal plane than the first focal plane;
the second focal plane is positioned a first distance from the one or more ocular lenses;
the display and the reflective element are disposed on either a common side or opposing sides of an optical axis extending from the objective lens through the one or more ocular lenses;
the display is positioned an effective distance from the one or more ocular lenses, the effective distance defining a folded optical path configured to render the image perceivable to a user of the riflescope; and
the effective distance is substantially equivalent to the first distance.
13. A riflescope comprising:
a main tube;
an objective lens coupled to a first end of the main tube;
one or more ocular lenses coupled to a second end of the main tube, the objective lens and the one or more ocular lenses defining a first focal plane and a second focal plane; and
a display system disposed between the one or more ocular lenses and the second focal plane, the display system comprising a display and a reflective element; wherein:
the one or more ocular lenses are positioned closer to the second focal plane than the first focal plane;
the display and the reflective element are disposed on either a common side or opposing sides of an optical axis extending from the objective lens through the one or more ocular lenses;
the second focal plane is positioned a first distance from the one or more ocular lenses;
the display is positioned a second distance from the reflective element;
the reflective element is positioned a third distance from the one or more ocular lenses; and
a sum of the second distance and the third distance is approximately equal to the first distance.