Abstract: A double-end laser rangefinder includes a ranging board, a control board, a key board which are integrated to form a mainboard. Two lens mounting bases are coaxially mounted at two ends of a main frame. First end and second end with lens-mounting bases are coaxially mounted in the main frame. Two lens groups are mounted on the two lens-mounting bases respectively. Each lens group includes a transmitting lens and a receiving lens. The receiving lenses on the first end and the second end are coaxial, the transmitting lenses on the first end and the second end are also coaxial. Coaxial arrangement of light paths of the two transmitting lenses and the two receiving lenses is realized through the main frame.

Abstract: The present disclosure relates to a method and a system for laser distance measurement. The method includes: obtaining, from a control circuit, a synchronization signal; generating, by at least one signal generator, a first periodic signal, a second periodic signal, and a third periodic signal based on the synchronization signal; emitting, by a laser emitting device, a laser beam toward a target, the laser beam being generated under a modulation of the first periodic signal; generating, by an optical detector, a measurement signal in response to a signal mixing of the second periodic signal and a reflected laser beam from the target; and determining a distance to the target based on the measurement signal and the third periodic signal.

Abstract: A multifunctional ranging telescope includes a main body, a wind direction and wind speed sensing device, a display device and a power source. The wind direction and wind speed sensing device is movably connected to the main body and includes a sensing element. When the wind direction and wind speed sensing device moves to a sensing position, the sensing element is located outside the main body. The display device is located on a surface of the main body and electrically connected to the wind direction and wind speed sensing device to display a wind direction and wind speed information. The power source is configured to supply power to the wind direction and wind speed sensing device and the display device.

Abstract: The present disclosure relates to a method and a system for laser distance measurement. The method includes: obtaining, from a control circuit, a synchronization signal; generating, by at least one signal generator, a first periodic signal, a second periodic signal, and a third periodic signal based on the synchronization signal; emitting, by a laser emitting device, a laser beam toward a target, the laser beam being generated under a modulation of the first periodic signal; generating, by an optical detector, a measurement signal in response to a signal mixing of the second periodic signal and a reflected laser beam from the target; and determining a distance to the target based on the measurement signal and the third periodic signal.