A variable range compensating device, including at least some of a housing having an optical cavity defined at least partially within the housing, wherein the optical cavity extends from an incoming image aperture to an outgoing image aperture; and two or more reflective optical elements, wherein each reflective optical element is adjustably positioned within at least a portion of the optical cavity, and wherein adjustment of at least one of the reflective optical elements adjusts the reflective optical elements such that a target image entering the incoming image aperture is reflected by the reflective optical elements, so as to exit the outgoing image aperture at a determined offset.

A method of evaluating camouflage for a specified area of responsibility, the method includes calculating an apparent spectrum of the camouflage at far field with respect to an observer; calculating an apparent spectrum of the specified area of responsibility at far field with respect to the observer; calculating a difference between the apparent spectrum of the camouflage with the apparent spectrum of the area of responsibility; and comparing the difference to a predetermined threshold, thereby determining suitability of the camouflage for the specified area of responsibility.

An electronic indicator on a see-through optical scope indicates whether an optical system is canted. The indicator may include illuminable visual indicators positioned on opposite sides of a field of view through the optical scope. The indicator may be visual, haptic, or aural. The visual indicator may include one or more LEDs positioned on the periphery of the field of view, and may be optically coupled to an appropriate position on the face of the reticle using a suitable waveguide. The LEDs are coupled to a microprocessor which is, in turn, coupled to a solid-state electronic inclinometer that is incorporated into the internal structure of the optical system. The microprocessor is configured to selectively illuminate one or more of the visual indicators based on the output of the inclinometer, thereby indicating how the reticle is canted, if at all.

An electronic indicator on a see-through optical scope indicates whether an optical system is canted. The indicator may include illuminable visual indicators positioned on opposite sides of a field of view through the optical scope. The indicator may be visual, haptic, or aural. The visual indicator may include one or more LEDs positioned on the periphery of the field of view, and may be optically coupled to an appropriate position on the face of the reticle using a suitable waveguide. The LEDs are coupled to a microprocessor which is, in turn, coupled to a solid-state electronic inclinometer that is incorporated into the internal structure of the optical system. The microprocessor is configured to selectively illuminate one or more of the visual indicators based on the output of the inclinometer, thereby indicating how the reticle is canted, if at all.

An illumination system for weapon optics includes a light source and one or more channels that direct light from the light source onto adjustment interfaces of a weapon optical device, such as windage and elevation turrets of a scope. An illumination system for weapon optics may also include an illuminated level device for positioning the weapon level in relation to the surface of the earth. An illumination system for weapon optics illuminates adjustment interfaces of a weapon optical device such that markings on the adjustment interfaces can be read in low-light and no-light conditions.

An illumination system for weapon optics includes a light source and one or more channels that direct light from the light source onto adjustment interfaces of a weapon optical device, such as windage and elevation turrets of a scope. An illumination system for weapon optics may also include an illuminated level device for positioning the weapon level in relation to the surface of the earth. An illumination system for weapon optics illuminates adjustment interfaces of a weapon optical device such that markings on the adjustment interfaces can be read in low-light and no-light conditions.

A front bow sight may include a housing, one or more primary pins having sighting tips within an opening through the housing, and a drop pin extending below the housing and providing a long range sighting tip below the housing.

A front bow sight may include a housing, one or more primary pins having sighting tips within an opening through the housing, and a drop pin extending below the housing and providing a long range sighting tip below the housing.

A sighting device is provided, configured to aim at a target, including a sight module, a rangefinder module, and a securing mechanism configured to detachably secure the rangefinder module to the sight module. The rangefinder module is configured to determine the distance between the rangefinder module and the target. The rangefinder module is disposed on a side of the sight module and has a digital numeric display, and the distance between the rangefinder module and the target is displayed on the digital numeric display.

A sighting device is provided, configured to aim at a target, including a sight module, a rangefinder module, and a securing mechanism configured to detachably secure the rangefinder module to the sight module. The rangefinder module is configured to determine the distance between the rangefinder module and the target. The rangefinder module is disposed on a side of the sight module and has a digital numeric display, and the distance between the rangefinder module and the target is displayed on the digital numeric display.