Abstract: A night-vision optical device is provided, including a main body, a lens module, and a display module. The lens module includes an aperture element, a lens element, an electromagnetic driving assembly, an image sensor, and a digital signal processor. In response to an ambient light level around the night-vision optical device satisfying a predetermined condition, the digital signal processor (DSP) controls the night-vision optical device to enter a first mode, and controls the electromagnetic driving assembly to drive a first portion of a filter member to a first position to align an optical axis of the lens element. In response to the ambient light level not satisfying a predetermined condition, the DSP controls the night-vision optical device to enter a second mode, and controls the electromagnetic driving assembly to drive the second portion of the filter member to the first position.

Abstract: A sighting device is provided, configured to aim at a target, including a main body, a lens module, a display module, an infrared light assembly, and a filter member. The main body includes a first side and a second side. The lens module is disposed on the first side and has a lens element and an image sensor. The display module is disposed on the second side, connected to the lens module and configured to display an image. The infrared light assembly is disposed on the first side and can be switched between an open state and a closed state. The filter member is disposed between the lens element and the image sensor, and an infrared cutting region thereof is overlapping them or not according to the infrared light assembly in the closed state or the open state.

Abstract: An optical binocular is provided, including a main body, a lens module, a display module, a first light source assembly and a second light source assembly. The lens module is disposed on one side of the main body. The display module is disposed in the main body and electrically connected to the lens module, and is configured to display an image. The first light source assembly includes a first light source and a first lens, and emits a first light. The second light source assembly includes a second light source and a second lens, and emits a second light. The first light source emits a long-range light through the first lens, and the second light source emits a close-range light through the second lens, wherein the focal length of the first lens is greater than the focal length of the second lens.