Abstract: An infrared detector includes thermocouples configured to generate electromotive force upon receiving thermal energy and an absorber configured to absorb infrared light and disposed on a surface of each of the thermocouples. The thermocouples are arranged radially and the absorber is provided at first ends of respective thermocouples, the first end configured to be a hot junction.

Abstract: A surface acoustic wave device includes: a piezoelectric substrate; an interdigital transducer disposed on the piezoelectric substrate, the interdigital transducer being configured to transduce a driving signal into a surface acoustic wave, and transduce a reflected surface acoustic wave into a response signal; a reflector arranged on the piezoelectric substrate and configured to reflect the surface acoustic wave input from the interdigital transducer; a first antenna disposed on the piezoelectric substrate, the first antenna extending radially from the interdigital transducer, and the first antenna being configured to receive the driving signal and transmit the response signal; and a second antenna disposed on the piezoelectric substrate, the second antenna extending radially from the interdigital transducer to be asymmetrical with respect to the first antenna, and the second antenna being configured to receive the driving signal and transmit the response signal.

Abstract: There is provided a current measurement sensor including: a rogowski coil having a winding coil disposed on an outer circumference part of a coaxial coil; a body case to which one end and the other end of the rogowski coil are coupled, so that the rogowski coil forms a loop; and a coupling member coupling the rogowski coil to the body case, wherein the coupling member includes: a coil coupling member having one side coupled to the rogowski coil and the other side coupled to the body case, and a case coupling member coupled to the body case and covering a coupling part between the coil coupling member and the body case.

Abstract: There is provided an apparatus for measuring an inner diameter, the apparatus including: an optical unit irradiating light to an object to be measured, and receiving the light therefrom; a measurement auxiliary member inserted into the object to improve measurement precision; and a calculating unit calculating an inner diameter of the object by interference between light reflected and received from an inner peripheral surface of the object and light reflected and received from an outer peripheral surface of the measurement auxiliary member.

Abstract: The present invention relates to a multi-channel luminous energy sensing unit, an apparatus for measuring light energy of an exposure device and a method for measuring light energy by channel. In accordance with one embodiment of the present invention, a multi-channel luminous energy sensing unit to sense an amount of light illuminated from a light source, which includes a board; and a plurality of light sensor modules arranged on the board for sensing at least two channel light with bandwidths different from each other among the light illuminated from the light source, is provided. And also, an apparatus for measuring light energy of an exposure device including the same and a method for measuring light energy by channel are provided.

Abstract: Disclosed herein is an apparatus for counting components, the apparatus including: a separating part separating a plurality of components into individual components; pipes moving the components separated by the separating part therethrough; a counting part positioned on the pipes to count the components passing through the pipes; and a vacuum sucking part positioned at distal ends of the pipes. Therefore, it is possible to accurately and rapidly count the number of micro electronic components. In addition, it is possible to track loss of electronic components generated between processes by accurately and rapidly counting the electronic components.