A diopter adjustment device for an optical device such as a riflescope includes a first tubular member having overlapping left-handed and right-handed external threads, a second tubular member has internal threads mated with either the left-handed or right-handed external threads of the first tubular member, and a stop nut threaded onto the first tubular member via internal threads that are of opposite handedness as the internal threads of the second tubular member. A diopter lens is mounted in one of the first and second tubular members and movable therewith relative to the other of the first and second tubular members to adjust a diopter setting or focus of the optical device. Because the internal threads of the nut and the second tubular member have opposite handedness, the nut provides greater resistance to inward movement of the diopter lens than conventional locking diopter adjustments.

An optical sight and system. The optical sight includes a housing including a base. A first support and a and a second support extend from the base. A top support extends between the first support and the second support. The top support extends over an optical element and includes a surface adjacent to the optical element. The top support of the housing defines at least one opening extending above a portion of the optical element. The optical element is supported by the housing between the base, the first support, and the second support.

An optical sight and system. The optical sight includes a housing including a base. A first support and a and a second support extend from the base. A top support extends between the first support and the second support. The top support extends over an optical element and includes a surface adjacent to the optical element. The top support of the housing defines at least one opening extending above a portion of the optical element. The optical element is supported by the housing between the base, the first support, and the second support.

An intensity adapting optical aiming system that automatically adjusts the intensity of the reticle to adapt to the light condition of the external light. The aiming system may be mounted to a weapon and the external light may be a weapon mounted light. The aiming system may include an illuminateable reticle and a light connector for transmitting light from the external light to the reticle.

An intensity adapting optical aiming system that automatically adjusts the intensity of the reticle to adapt to the light condition of the external light. The aiming system may be mounted to a weapon and the external light may be a weapon mounted light. The aiming system may include an illuminateable reticle and a light connector for transmitting light from the external light to the reticle.

There is provided a handgun for aiming at a target. The handgun comprises a handgun body, a slide arranged to move with respect to the handgun body, a lens removably mounted on the slide, and a light source associated with the slide and positioned at the focal point of the lens, such that when a user aims the handgun at the target, light from the light source reflects from the lens to the user's eye, providing an infinity image of an illuminated dot over the target. The lens is removable from both of the slide and the light source.

There is provided a handgun for aiming at a target. The handgun comprises a handgun body, a slide arranged to move with respect to the handgun body, a lens removably mounted on the slide, and a light source associated with the slide and positioned at the focal point of the lens, such that when a user aims the handgun at the target, light from the light source reflects from the lens to the user's eye, providing an infinity image of an illuminated dot over the target. The lens is removable from both of the slide and the light source.

There is provided a dot sight device including a housing being configured to have an open front and an open rear, and a light path connecting a user with a target along a central axis of the light path disposed therein. A dot reticle generating unit generates a plurality of light rays for forming a dot reticle. A reflective mirror reflects the light rays provided from the dot reticle generating unit toward the user to form an image on a target side. A compensating plate is disposed along the light path of the housing together with the reflective mirror and passes through the light rays coming from the target to be directed toward the user. The compensating plate is configured to suppress or minimize one or more movements of the image of the target caused by one or more movements of the dot sight device.

There is provided a dot sight device including a housing being configured to have an open front and an open rear, and a light path connecting a user with a target along a central axis of the light path disposed therein. A dot reticle generating unit generates a plurality of light rays for forming a dot reticle. A reflective mirror reflects the light rays provided from the dot reticle generating unit toward the user to form an image on a target side. A compensating plate is disposed along the light path of the housing together with the reflective mirror and passes through the light rays coming from the target to be directed toward the user. The compensating plate is configured to suppress or minimize one or more movements of the image of the target caused by one or more movements of the dot sight device.

A diopter adjustment device for an optical device such as a riflescope includes a first tubular member having overlapping left-handed and right-handed external threads, a second tubular member has internal threads mated with either the left-handed or right-handed external threads of the first tubular member, and a stop nut threaded onto the first tubular member via internal threads that are of opposite handedness as the internal threads of the second tubular member. A diopter lens is mounted in one of the first and second tubular members and movable therewith relative to the other of the first and second tubular members to adjust a diopter setting or focus of the optical device. Because the internal threads of the nut and the second tubular member have opposite handedness, the nut provides greater resistance to inward movement of the diopter lens than conventional locking diopter adjustments.