Abstract: An Anderson localized hyperspectral filter array is disclosed which includes a base layer and a plurality of optical layers deposited on the base layer selected from two or more materials, each material having a refractive index that is different from the other materials of the two or more materials, wherein no consecutively deposited optical layers have the same refractive index, each of the plurality of optical layers having a thickness chosen based on a random number within a predetermined range.

Abstract: A device for evaluating quality of welding spots of a panel is disclosed. The device includes a vibration transferring member, a first access member contacted with one surface of one end portion of the vibration transferring member and with the one surface of the panel, a second access member contacted with one surface of the other end portion of the vibration transferring member and with the one surface of the panel, an oscillator for supplying vibration to the one end portion of the vibration transferring member, a sensor disposed on the vibration transferring member to detect characteristic of vibration transferred along the vibration transferring member, and a computing device for analyzing characteristic of the welding spots using characteristic of vibration detected in the sensor.

Abstract: A device for evaluating quality of welding spots of a panel is disclosed. The device includes a vibration transferring member, a first access member contacted with one surface of one end portion of the vibration transferring member and with the one surface of the panel, a second access member contacted with one surface of the other end portion of the vibration transferring member and with the one surface of the panel, an oscillator for supplying vibration to the one end portion of the vibration transferring member, a sensor disposed on the vibration transferring member to detect characteristic of vibration transferred along the vibration transferring member, and a computing device for analyzing characteristic of the welding spots using characteristic of vibration detected in the sensor.

Abstract: A hole detection method of a vehicle and a system performing the same may include positioning an air injection nozzle at a predetermined position of a vehicle body and positioning a sound sensor at a position corresponding to the air injection nozzle, injecting an air jet from the air injection nozzle, detecting a sound wave from the sound sensor, and calculating a characteristic of a water leakage hole formed on the vehicle body by using the sound wave detected from the sound sensor.

Abstract: A hole detection method of a vehicle and a system performing the same may include positioning an air injection nozzle at a predetermined position of a vehicle body and positioning a sound sensor at a position corresponding to the air injection nozzle, injecting an air jet from the air injection nozzle, detecting a sound wave from the sound sensor, and calculating a characteristic of a water leakage hole formed on the vehicle body by using the sound wave detected from the sound sensor.