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 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 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.

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.

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.

The invention discloses a selectable offset image wedge assembly and various methods for making and for use with any optical system having a circular lens and an objective, comprising a housing with a rear-facing end that mounts onto the objective and a forward-facing end with a circular wedge lens mounted therein that is coaxially aligned with the circular lens of the optical system, wherein, the wedge is adjustable to any predetermined clocking position after detachment from the optical system, allowing quick and repeated reattachment to the optical system to an approximately exact vertical orientation of a first image produced by the wedge lens and a second image produced by the circular lens of the optical system.

Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.

Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.

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 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.