Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.9, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, L7TR is an overall outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in a same unit of measurement.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system; and a spacer disposed between the sixth and seventh lenses, wherein the optical imaging system satisfies 0.5<S6d/f<1.4, where S6d is an inner diameter of the spacer, f is an overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.

Abstract: A home appliance is provided. The home appliance includes a main body having an opening, a door disposed on one side of the main body, the door being configured to open or close the opening, and a damping assembly configured to be operated by the door. The damping assembly includes a first lever installed in the main body, the first lever being configured to be movable when the door is pressed, a second lever connected to the first lever, and a cylinder connected to the second lever, the cylinder being configured to be movable in a direction that is parallel to a movement path of the first lever.

Abstract: A home appliance is provided. The home appliance includes a main body having an opening, a door disposed on one side of the main body, the door being configured to open or close the opening, and a damping assembly configured to be operated by the door. The damping assembly includes a first lever installed in the main body, the first lever being configured to be movable when the door is pressed, a second lever connected to the first lever, and a cylinder connected to the second lever, the cylinder being configured to be movable in a direction that is parallel to a movement path of the first lever.

Abstract: There is provided a cooker including: a cooking room; a steam generator configured to generate steam, and to supply the steam to the cooking room; a water level sensor configured to sense a water level of a cleaning solution stored in the inside of the steam generator; a supply apparatus including a storage unit configured to accommodate the cleaning solution, a supply pump configured to supply the cleaning solution accommodated in the storage unit to the steam generator, and a drain pump configured to supply the cleaning solution remaining in the steam generator to the storage unit; and a controller configured to control operations of the supply pump and the drain pump, wherein the controller operates the supply pump in a washing mode, operates the drain pump when the cleaning solution is fully filled in the steam generator, and again operates the supply pump when the cleaning solution is removed from the steam generator.

Abstract: A home appliance is provided. The home appliance includes a main body having an opening, a door disposed on one side of the main body, the door being configured to open or close the opening, and a damping assembly configured to be operated by the door. The damping assembly includes a first lever installed in the main body, the first lever being configured to be movable when the door is pressed, a second lever connected to the first lever, and a cylinder connected to the second lever, the cylinder being configured to be movable in a direction that is parallel to a movement path of the first lever.

Abstract: A negative active material for a rechargeable lithium battery, including crystalline carbon-based material particles, for which a maximum volume % in a graph of a particle size distribution on a volume basis is about 20 volume % or more.

Abstract: A negative active material for a rechargeable lithium battery, including crystalline carbon-based material particles, for which a maximum volume % in a graph of a particle size distribution on a volume basis is about 20 volume % or more.

Abstract: Disclosed herein are a steam generator capable of preventing water inflow into a cooking compartment and easily discharging water therefrom and a cooking apparatus having the steam generator. The steam generator includes a first part to store water therein, a second part extending from the first part and having a smaller width than the first part, a heater disposed in the first part to heat water in the first part, and a temperature sensor mounted to an outer surface of the first part to detect a temperature of the heater. Whether the steam generator lacks water is determined by detecting a temperature of the heater using the temperature sensor.

Abstract: Disclosed herein are a steam generator capable of preventing water inflow into a cooking compartment and easily discharging water therefrom and a cooking apparatus having the steam generator. The steam generator includes a first part to store water therein, a second part extending from the first part and having a smaller width than the first part, a heater disposed in the first part to heat water in the first part, and a temperature sensor mounted to an outer surface of the first part to detect a temperature of the heater. Whether the steam generator lacks water is determined by detecting a temperature of the heater using the temperature sensor.