A firearm sighting optic that can have the lenses easily and quickly replaced by the user is disclosed. This sighting optics allows the lens to be inserted from the bottom of a red dot sighting unit and then be secured by set screws. The firearm sighting optic includes a base and a hood. The lens is removably retained with the firearm sighting optic by user removable fasteners securing the hood to the base. The lens is housed in a hood that makes sliding the replacement lens into the unit much easier. The hood and base include an interconnecting protrusion and recess for reliable alignment of the lens within the hood and the base.

A support facility for a binocular has a base, the base including a tripod connection facility, a flexible strap having a first strap end connected to the base, and an opposed second strap end, a tensioner connected to the base and to the second strap end, the flexible strap, the base, and the tensioner defining an opening configured to receive a first barrel of the binocular, and the flexible strap including a length adjustment facility adjustable over a range of length adjustment positions. The length adjustment facility may be configured to provide a selected strap length based on the diameter of the first barrel. The tensioner may be configured to operate between a released position in which the length adjustment facility is removable from or movable along the flexible strap and an engaged position in which the support facility is engaged to the first barrel.

A support facility for a binocular has a base, the base including a tripod connection facility, a flexible strap having a first strap end connected to the base, and an opposed second strap end, a tensioner connected to the base and to the second strap end, the flexible strap, the base, and the tensioner defining an opening configured to receive a first barrel of the binocular, and the flexible strap including a length adjustment facility adjustable over a range of length adjustment positions. The length adjustment facility may be configured to provide a selected strap length based on the diameter of the first barrel. The tensioner may be configured to operate between a released position in which the length adjustment facility is removable from or movable along the flexible strap and an engaged position in which the support facility is engaged to the first barrel.

A system, method, and device for configuring an optical aiming device for ballistic drop compensation (BDC). The optical aiming device can include a housing with a reticle pane defining a reticle display field viewable by a user and indicating a zero point, the housing further including a plurality of axially spaced lenses and defining an optical path therethrough. In various embodiments the system includes a display device configured to project an image generated from a display, a processor, and a non-transitory computer readable storage medium. The computer readable data storage medium can include instructions executable by the processor to receive a first set of ballistics input data indicating a first type of ammunition, determine a BDC pattern including at least two holdover marks corresponding to at least two ranges for the first type of ammunition, and project the BDC pattern onto the reticle display field.

A kinematically engaged yoke system (KEYS) for multiple-order-diffraction engineered material may comprise a harness comprising a frame and a plurality of semi-kinematic keys disposed on the frame, wherein the semi-kinematic keys are configured based on a MOD-side mechanical profile of a plurality of segments of a multiple-order-diffraction engineered material, and wherein the MOD-side mechanical profile, when engaged with the semi-kinematic keys, functions as a fiducial that provides alignment between neighboring segments; and one or more shims disposed between one or more pairs of neighboring segments of the plurality of segments of the multiple-order-diffraction engineered material, wherein the one or more shims facilitate alignment of the one or more pairs of neighboring segments of the plurality of segments based on a translation across one or more surfaces of the one or more shims.

A kinematically engaged yoke system (KEYS) for multiple-order-diffraction engineered material may comprise a harness comprising a frame and a plurality of semi-kinematic keys disposed on the frame, wherein the semi-kinematic keys are configured based on a MOD-side mechanical profile of a plurality of segments of a multiple-order-diffraction engineered material, and wherein the MOD-side mechanical profile, when engaged with the semi-kinematic keys, functions as a fiducial that provides alignment between neighboring segments; and one or more shims disposed between one or more pairs of neighboring segments of the plurality of segments of the multiple-order-diffraction engineered material, wherein the one or more shims facilitate alignment of the one or more pairs of neighboring segments of the plurality of segments based on a translation across one or more surfaces of the one or more shims.

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.

Systems and methods for regulating the speed of movement of virtual objects presented by a wearable system are described. The wearable system may present three-dimensional (3D) virtual content that moves, e.g., laterally across the user's field of view and/or in perceived depth from the user. The speed of the movement may follow the profile of an S-curve, with a gradual increase to a maximum speed, and a subsequent gradual decrease in speed until an end point of the movement is reached. The decrease in speed may be more gradual than the increase in speed. This speed curve may be utilized in the movement of virtual objections for eye-tracking calibration. The wearable system may track the position of a virtual object (an eye-tracking target) which moves with a speed following the S-curve. This speed curve allows for rapid movement of the eye-tracking target, while providing a comfortable viewing experience and high accuracy in determining the initial and final positions of the eye as it tracks the target.

Systems and methods for regulating the speed of movement of virtual objects presented by a wearable system are described. The wearable system may present three-dimensional (3D) virtual content that moves, e.g., laterally across the user's field of view and/or in perceived depth from the user. The speed of the movement may follow the profile of an S-curve, with a gradual increase to a maximum speed, and a subsequent gradual decrease in speed until an end point of the movement is reached. The decrease in speed may be more gradual than the increase in speed. This speed curve may be utilized in the movement of virtual objections for eye-tracking calibration. The wearable system may track the position of a virtual object (an eye-tracking target) which moves with a speed following the S-curve. This speed curve allows for rapid movement of the eye-tracking target, while providing a comfortable viewing experience and high accuracy in determining the initial and final positions of the eye as it tracks the target.

A target adjustment apparatus may be provided. The target adjustment apparatus may include an optical targeting device having a first zero. The target adjustment apparatus may further include an optical adjustment lens removably disposed in a line of sight between a target and the optical targeting device. The optical adjustment lens may shift a target image before it reaches the optical targeting device, creating a second zero.