Abstract:
A lens for controlling an illuminance distribution to realize high luminous flux efficiency by maintaining a required beam angle and uniformity on an illumination surface having a particular shape, such as a square shape, and a light-emitting diode (LED) package including the lens are provided. The lens includes an incidence surface onto which light emitted from a light-emitting device is incident, and an emission surface through which the light incident onto the incidence surface is emitted. An illuminance controller, which includes at least two optical devices, is disposed on the emission surface to control an illuminance distribution of the emission surface.
Abstract:
A robot cleaner is provided that includes a driver configured to move the robot cleaner, and a suction unit configured to suck foreign objects from a surface below the robot cleaner. The robot cleaner also includes a detector configured to capture images of regions disposed in front of the robot cleaner. The robot cleaner further includes a controller configured to control the detector to capture a first image of a region before cleaning, control the detector to capture a second image of the region after cleaning, and generate cleaning result information using the first and second images.
Abstract:
A management server is provided. The management server includes a communication interface unit configured to receive user environment information from a plurality of wearable apparatuses located in a preset space, an analyzer configured to analyze an environment state of the preset space based on a plurality of pieces of the received user environment information regarding the plurality of wearable apparatuses and determines an operation state of a common device located in the preset space according to the analyzed environment state, and a controller configured to control the communication interface unit so as to operate the common device according to the determined operation state.
Abstract:
A robot cleaner is provided that includes a driver configured to move the robot cleaner, and a suction unit configured to suck foreign objects from a surface below the robot cleaner. The robot cleaner also includes a detector configured to capture images of regions disposed in front of the robot cleaner. The robot cleaner further includes a controller configured to control the detector to capture a first image of a region before cleaning, control the detector to capture a second image of the region after cleaning, and generate cleaning result information using the first and second images.
Abstract:
A management server is provided. The management server includes a communication interface unit configured to receive user environment information from a plurality of wearable apparatuses located in a preset space, an analyzer configured to analyze an environment state of the preset space based on a plurality of pieces of the received user environment information regarding the plurality of wearable apparatuses and determines an operation state of a common device located in the preset space according to the analyzed environment state, and a controller configured to control the communication interface unit so as to operate the common device according to the determined operation state.