A non-lethal dazzling device includes a laser operable in the visible spectrum. The laser can be a relatively low-powered laser, such as a laser having a maximum output power of 2.5 mW, or it can be a higher-powered laser with a drive circuit that lowers the maximum output power to a safe level based on the range of the hostile target from the laser. In certain embodiments, the disclosed non-lethal dazzling device can be coupled to the bridge of a binocular device.

The present disclosure provides night vision binoculars with a replaceable objective lens. The night vision binoculars include: a main body, an objective lens and a locking member. The main body is provided with a mounting base; the objective lens is provided with a locking hole and detachably inserted into the mounting base. The objective lens rotates in the mounting base; and the locking member is slidingly disposed on the main body and provided with a locking position and an unlocking position. When the locking member is in the locking position, the locking member is inserted into the locking hole; and when the locking member is in the unlocking position. The objective lens can be removed from the mounting base. Through the above structure setting, the user is convenient to disassemble the objective lens; and the night vision binoculars are simple in structure and convenient to use.

The present disclosure provides night vision binoculars with a replaceable objective lens. The night vision binoculars include: a main body, an objective lens and a locking member. The main body is provided with a mounting base; the objective lens is provided with a locking hole and detachably inserted into the mounting base. The objective lens rotates in the mounting base; and the locking member is slidingly disposed on the main body and provided with a locking position and an unlocking position. When the locking member is in the locking position, the locking member is inserted into the locking hole; and when the locking member is in the unlocking position. The objective lens can be removed from the mounting base. Through the above structure setting, the user is convenient to disassemble the objective lens; and the night vision binoculars are simple in structure and convenient to use.

The invention relates to a long range optical device with at least a first visual optical path and a focusing device for focusing the at least first visual optical path. The long range optical device may also include a laser distance meter with a laser transmitter and a laser receiver, wherein a part of an optical path of the laser receiver extends in the at least first visual optical path to the objective lens. A region of the deflection of the optical path of the laser receiver out of the at least first visual optical path may be disposed on at least one optical component. The focusing device may be disposed between the at least one optical component for deflecting of the optical path of the laser receiver and the objective lens.

The invention relates to a long range optical device with at least a first visual optical path and a focusing device for focusing the at least first visual optical path. The long range optical device may also include a laser distance meter with a laser transmitter and a laser receiver, wherein a part of an optical path of the laser receiver extends in the at least first visual optical path to the objective lens. A region of the deflection of the optical path of the laser receiver out of the at least first visual optical path may be disposed on at least one optical component. The focusing device may be disposed between the at least one optical component for deflecting of the optical path of the laser receiver and the objective lens.

A stereoscopic optical system including: left and right channels; an electromagnetic actuator including a stator and rotor; wherein first optical components of the left channel are arranged in a left tube and second optical components of the right channel are arranged in a right tube; the stator is arranged outside the guide tubes; the rotor includes a left rotor, in which one or more of the first optical components is accommodated, and a right rotor, in which one or more of the second optical components is accommodated; the left and right rotors are mounted in one of the left and right tubes to be movable in a longitudinal axial direction; the left and right rotors include paramagnetic and/or ferromagnetic material and are movable by an electromagnetic field; the stator includes distal and proximal permanent magnets oppositely polarized; and the stator includes an electric coil for generating the electromagnet field.

An ergonomic digital imaging system obviates the need for, and replaces, the standard microscope with binoculars for viewing images, thereby freeing the user from using his or her hands to manipulate images seen through the binoculars of the microscope, whereby the user can use his or her hands for other tasks, such as dental or other surgery, from a position away from the exhaled breath of the patient being treated. The images are maintained focused, no matter how close or far the viewer is to the viewing display screen. The system is collapsible and portable, so that specialists can take the system from office to office, a plug and play work environment. The extended maneuverability of the camera head results in simple and fast patient positioning, and the camera and display module adjust for any comfortable sit or stand ergonomics of the practitioner.

An ergonomic digital imaging system obviates the need for, and replaces, the standard microscope with binoculars for viewing images, thereby freeing the user from using his or her hands to manipulate images seen through the binoculars of the microscope, whereby the user can use his or her hands for other tasks, such as dental or other surgery, from a position away from the exhaled breath of the patient being treated. The images are maintained focused, no matter how close or far the viewer is to the viewing display screen. The system is collapsible and portable, so that specialists can take the system from office to office, a plug and play work environment. The extended maneuverability of the camera head results in simple and fast patient positioning, and the camera and display module adjust for any comfortable sit or stand ergonomics of the practitioner.

An example head-mounted display device includes a light projector, an optical assembly arranged to direct light from a light projector to a user, and an actuator module. The optical assembly includes a variable focus lens assembly including a rigid refractive component, a shaper ring defining an aperture, and a flexible lens membrane between the shaper ring and the rigid refractive component and covering the aperture. The refractive component, the shaper ring, and the lens membrane are arranged along an axis. The refractive component and the lens membrane define a chamber containing a volume of fluid. The actuator module is configured to adjust an optical power of the variable focus lens by moving the shaper ring relative to the refractive component along the axis, such that a curvature of the lens membrane in the aperture is modified.

An example head-mounted display device includes a light projector, an optical assembly arranged to direct light from a light projector to a user, and an actuator module. The optical assembly includes a variable focus lens assembly including a rigid refractive component, a shaper ring defining an aperture, and a flexible lens membrane between the shaper ring and the rigid refractive component and covering the aperture. The refractive component, the shaper ring, and the lens membrane are arranged along an axis. The refractive component and the lens membrane define a chamber containing a volume of fluid. The actuator module is configured to adjust an optical power of the variable focus lens by moving the shaper ring relative to the refractive component along the axis, such that a curvature of the lens membrane in the aperture is modified.