Abstract: The present invention aims to provide a composite optical device which includes the day-time optical device, thermal imaging optical device, laser application device and displaying device while reducing the volume and weight, further comprising attenuator that can control the amount of light for easy display on the display. The present invention also aims to provide a composite optical device with enhanced efficiency of transmitting laser and easy operability by installing the attenuator at an appropriate location.

Abstract: The present invention aims to provide a composite optical device which includes the day-time optical device, thermal imaging optical device, laser application device and displaying device while reducing the volume and weight, further comprising attenuator that can control the amount of light for easy display on the display. The present invention also aims to provide a composite optical device with enhanced efficiency of transmitting laser and easy operability by installing the attenuator at an appropriate location.

Abstract: The present invention relates to a power supply device of a small arms fire control system or a similar small arms system. The device includes a first current limit part for limiting a low current when power is supplied from a battery, a second current limit part for limiting a high current when the power is supplied from the battery, a Zener diode and a step-up DC-DC boost converter connected to the first and second current limit parts, and adapted to primarily charge a supercapacitor to a battery voltage level and subsequently charge the supercapacitor up to a final voltage that will be supplied to a load, and a microprocessor for checking a power supply state of the system and a voltage of the supercapacitor in real-time and controlling ON/OFF of the first and second current limit parts used in the system. An instant high power is supplied to the load using a variable current limit and multi-step charging method.

Abstract: The present invention relates to a power supply device of a small arms fire control system or a similar small arms system. The device includes a first current limit part for limiting a low current when power is supplied from a battery, a second current limit part for limiting a high current when the power is supplied from the battery, a Zener diode and a step-up DC-DC boost converter connected to the first and second current limit parts, and adapted to primarily charge a supercapacitor to a battery voltage level and subsequently charge the supercapacitor up to a final voltage that will be supplied to a load, and a microprocessor for checking a power supply state of the system and a voltage of the supercapacitor in real-time and controlling ON/OFF of the first and second current limit parts used in the system. An instant high power is supplied to the load using a variable current limit and multi-step charging method.