Abstract: Device and related methods for improving the accuracy and precision of firearms fitted with optical sights. The device comprises a small alignment pattern for indexing against a small, central region of a target picture aimpoint or reticle. The alignment pattern is applied to an auxiliary lens fixed in position externally behind an ocular lens. The auxiliary lens is supported by a frame secured to the optical sight or the auxiliary lens is made to adhere to the outside surface of the ocular lens. Some embodiments refract or condition light to improve target pictures. Alternatively, an alignment pattern, without an auxiliary lens, is applied directly to or made integral with an ocular lens during the manufacture of an optical sight. In general, referencing the alignment pattern with the reticle, by adjusting eye placement until a desired alignment is observed, provides consistent shooter positioning and reduced parallax.

Abstract: Systems and methods for boresighting a weapon having a barrel and at least one component to be aligned with the barrel. In one example, a boresighting apparatus includes a housing configured to attach to the weapon so as to lock the boresighting apparatus in a stationary position relative to the barrel, and a holographic laser projector contained within the housing and configured to project an image, the image including at least one boresighting target, each boresighting target of the at least one boresighting target having a geometric shape selected according to a component of the at least one component so as to permit alignment of the component with the barrel.

Abstract: An adjustment tower for telescopic sights includes a first adjustment device and a second adjustment device, which are capable of rotating independently of one another relative to a base. The first adjustment device can be rotated in an adjustment position and has a secured position in which it is secured against rotation. The first adjustment device is also axially movable relative to the base to a limited extent such that in the adjustment position, the adjustment device projects further out of the second adjustment device than in the secured position. The tower further includes a stored-energy device that exerts an axial force on the first adjustment device from the secured position in the direction of the adjustment position.

Abstract: An optical plummet for use in geodesy includes an eyepiece, a target mark, and an objective. The target mark is positioned in the beam path between the eyepiece and the objective and the target mark and the eyepiece are supported by a first body and the objective is supported by a second body. Either the first body or second body has two annular recesses spaced apart from each other along the beam path and disposed coaxially with respect to the beam path. Each of the annular recesses accommodates a ring. The other body has at least sectionally a cylindrical outer surface extending coaxially through the two annular recesses and rings along the beam path and is guided by the ring such that the distance between the eyepiece and the objective is adjustable by moving the first body and the second body relative to one other along the beam path.

Abstract: An optical plummet for use in geodesy includes an eyepiece, a target mark, and an objective. The target mark is positioned in the beam path between the eyepiece and the objective and the target mark and the eyepiece are supported by a first body and the objective is supported by a second body. Either the first body or second body has two annular recesses spaced apart from each other along the beam path and disposed coaxially with respect to the beam path. Each of the annular recesses accommodates a ring. The other body has at least sectionally a cylindrical outer surface extending coaxially through the two annular recesses and rings along the beam path and is guided by the ring such that the distance between the eyepiece and the objective is adjustable by moving the first body and the second body relative to one other along the beam path.

Abstract: A system and method are provided for removing a reticle from visualization in a displayed view in a binocular wherein the reticle is visible during direct scene view. The system includes a filter positioned between a display element and an eyepiece wherein a visual characteristic of the filter matches a corresponding characteristic of the reticle. These matching characteristics thereby render the reticle substantially “invisible” to the user. Exemplary filters can include a monochromatic filter and a polarizer.

Abstract: An illuminated aiming device for an observation instrument comprises a reticle plate, an aiming mark provided at the reticle plate, and a light source directed onto the aiming mark via a light guide. The light guide is configured as a wave guide within the reticle plate.

Abstract: A binocular telescope with a photographing function comprises a pair of telescopic optical systems, a photographing optical system, and a pair of reticle elements, on which reticles are formed. The reticle elements are provided in the telescopic optical systems for focusing the telescopic optical systems. The distance between the optical axes of the telescopic optical systems can be adjusted, so that the reticle images are fused. The shapes of the fused reticle images are geometrically non-coordinate with each other.

Abstract: A reference plate is situated on an optical axis of an eyepiece. The reference plate includes a first glass plate and a second glass plate. One surface of the first glass plate and one surface of the second glass plate are bonded. Cross hairs are formed on the bonded surface of the first glass plate by using a chromium plating and so on. A radius of curvature of the bonded surface accords with the field curvature of the sagittal image surface of the eyepiece.

Abstract: A combined focus and reticle illumination system for a riflescope which uses a single, dual functioning turn knob mounted on the scope turret for focusing and activating and deactivating the illuminated reticle. During use, the turn knob is rotated to adjust the relative position of a sliding focusing cell assembly located inside the scope body in front of the erector tube. The reticle, attached to the proximal end of the erector tube, includes a side mounted LED. The turn knob has a push-pull movement and a battery located therein that disconnects and connects, respectively, the electric circuit. The sliding focusing cell includes a rigid outer housing that is resistant to bending and a rear sliding lens cell that is biased in a rearward direction to be self-centering during recoil. Wires extend from the turn knob to the LED along the scope sidewalls and are designed to preclude twisting.

Abstract: The invention relates to a combined telescope and telemeter device comprising a telescopic sight (1) having a housing (2), one end of which receives an objective lens (3) while the other end receives an eyepiece (4), said housing defining a beam path (5) between the objective lens and the eyepiece. The device also includes an opto-electronic telemeter (12) with emitter-receiver optics (14) for optical measuring beams (15) and evaluation electronics (24) for timing the interval between an emitted measuring beam and a received measuring beam and for determining the distance on the basis thereof.

Abstract: A method of achieving a focusing adjustment of an optical assembly, and of releasably locking this focusing adjustment, is described. A night vision weapon sight (10) which implements this method includes an objective lens assembly (14), an eyepiece lens (18), and an image intensifier tube (20) receiving light via the objective lens in order to provide an image via the eyepiece lens. The objective lens assembly includes a base portion (32) into which a lens housing (34) is threadably received. The threaded engagement of the base portion and lens housing is locked by a collet-like array of radially flexible fingers (42) each having a conical outer surface. A locking collar (44) having a conically tapering inner surface threadably engages the lens housing (34) and engages the collet fingers (42). Locking of the locking collar (44) is ensured by threaded engagement of a locking ring (54) with the locking collar (44) such that the prevailing torque tightens both of a pair of threaded engagements of opposite hand.

Abstract: An aiming post for an optical sighting device providing an illuminated aiming mark defined by surfaces forming a generally sharp peak or point and also a construction for providing ambient light illumination for the aiming mark in which the intensity is selectively variable by the operator.

Abstract: The sighting device may include a reticle and a strongly magnifying lens or lens segment positioned along the line of slight. The lens, or segment blocks out a part of the object field and focusses an image of the reticle on the user's retina. Alternatively, a holographic image of the reticle may be used in place of the reticle-lens combination. The device may also include a Galilean telescope with the magnifying lens segment positioned at the eyelens and the reticle adjacent to the objective.