Abstract: A sighting device includes a body, a lighting unit, a touch unit, and a controller, wherein the lighting unit, the touch unit, and the controller are disposed on the body, and the controller is electrically connected to the touch unit and the lighting unit. The body has an accommodating space for accommodating a lens or at least one lens assembly. A reticle or an optical beam splitter is disposed in the accommodating space, and a light generated by the lighting unit is projected onto a scale or hairline of the reticle or the optical beam splitter. The touch unit senses an external touch and generates a touch signal in correspondence to the external touch, and the controller adjusts the brightness level and/or the color of the light generated by the lighting unit based on the touch signal.

Abstract: A binocular eyepiece assembly for telescope, the assembly includes a casing, an optical lenses assembly, a beam splitter, a first reflecting mirror unit and a second reflecting mirror unit. The casing has a left ocular portion, a right ocular portion and a light receiving portion. The optical lenses assembly, the beam splitter, the first reflecting mirror unit and the second reflecting mirror unit are disposed inside the casing, and furthermore, the beam splitter is disposed on the light axis of the light axis. The beam splitter has a first reflecting surface, a second reflecting surface and an included angle. The included angle is disposed between the first reflecting surface and the second reflecting surface. The included angle is a right angle. A light beam is received via the light receiving portion, and the light beam will be transmitted to the optical lenses assembly and a beam splitter.

Abstract: An adjustable optical apparatus adapter is disclosed to include a camera platform provided with a mounting screw and a wing nut for securing a camera to the camera platform, a telescope holder for holding a telescope, a holding down frame controlled by a lock screw to hold down a telescope in the telescope holder, and a camera platform lock mounted in the a horizontal sliding slot in camera platform and a vertical sliding slot in telescope holder for locking the camera platform to the telescope holder after position adjustment of the camera platform horizontally and vertically relative to the telescope holder to have the loaded telescope at the telescope holder in axial alignment with the loaded camera at the camera platform.

Abstract: A gun tube cailibrator comprises a calibration lens, a sliding seat connected to the of the calibration lens, one side thereof is formed with a teeth track, and the center portion thereof is disposed with a vertical sliding groove for being locked horizontally by screws. The block is a rectangular body. and a side of the block near the sliding seat is formed with a respective teeth track engaged with the teeth track of the sliding seat, while the center thereof is installed with an axial hole. The lower end thereof is locked vertically by a fixing screw; An elastomer is installed between the teeth track of the block and the track of the sliding seat. A straight pin is inserted into a through hole in the center of the block and a fixing screw serves to the fixed the lower end thereof. Thus, the telescopic gun sight lens of different sizes can be suited.