Abstract: A filter holder comprises: a plurality of filter frames disposed such that at least some thereof are adjacent to each other; and a folding member which supports filter frames, from among the plurality of filter frames, adjacent to each other so as to be rotatable with respect to each other. The folding member comprises: a folding part which has a predetermined thickness and is flexible so as to be foldable by means of rotation of the adjacent filter frames adjacent with respect to each other; and a plurality of edge parts which are connected to the respective sides of the folding part with the folding portion therebetween and rotate together with the adjacent filter frames, and wherein when viewed from a cross-section of the folding member, the edge parts may have a greater thickness than the folding part.

Abstract: An air filter comprises: a first filter frame in which a plurality of first chambers are formed; a second filter frame in which a plurality of second chambers are formed and which is arranged at the rear of the first filter frame; and a filter material which is accommodated in the plurality of first chambers and the plurality of second chambers to filter air, wherein the first filter frame and the second filter frame are arranged so that, when seen from the front, the center of each of the plurality of second chambers is out of line with the center of each of the plurality of first chambers, in the vertical direction.

Abstract: A mobile robot platooning system includes a plurality of mobile robots operated for transfer of objects in a factory, and a central server connected to the plurality of mobile robots through wireless communication, and configured to set a path of the plurality of mobile robots to control autonomous driving of the mobile robots, wherein the central server is configured to group a platoon of the mobile robots required for processing a work, dispose the platoon of the mobile robots into a predetermined platoon form, collect state information of the platoon of the mobile robots, and control the platoon of the mobile robots to move in a synchronized form based on the state information.

Abstract: Provided are a multi-wavelength optical transceiver module and a multiplexer/demultiplexer using a thin film filter. The multi-wavelength optical transceiver module includes: a PLC platform, on which a predetermined optical waveguide unit is formed and an optical transmitter is mounted; an optical fiber coupled to one side of the PLC platform to transmit a predetermined light; a plurality of thin film filters coupled to another side of the PLC platform to separate input optical wavelengths; and an optical receiver coupled to one side of the thin film filters to receive light that is input from the optical fiber and transmits the thin film filters, thereby enabling mass production of the optical transceiver module with low cost.

Abstract: A method for manufacturing a plurality of light sources is provided with a low cost to economically construct a passive optical subscriber network of a wavelength division multiplexing method using a wavelength division multiplexing and demultiplexing device. More specifically, disclosed is a method for manufacturing a plurality of light sources with a low cost applying a planar lightwave circuit (PLC) hybrid integrated technology to a PLC chip as a method for constructing a light source with a plurality of wavelengths constituting an optical transmitter of a base station to economically construct a passive optical subscriber network of a wavelength division multiplexing method.

Abstract: An optical waveguide platform and a method of manufacturing the same are disclosed. The optical waveguide platform comprises an optical waveguide having a lower clad layer, a patterned core layer and an upper clad layer which are laminated on one area of said substrate sequentially, a terrace formed by patterning said lower clad layer, on the other area of said substrate, a metal and a solder formed on said terrace and an optical device mounted on said terrace containing said metal and said solder. According to the present invention, the optical waveguide platform can be manufactured in a simple method without damaging the optical waveguide and the manufacturing cost thereof can be reduced.

Abstract: There is provided an optical module incorporating active elements such as light emitting devices or photo detective devices mounted on a single substrate. The optical module can suppress optical and electrical crosstalk by a blocking trench formed between the active elements for blocking optical and electromagnetic waves, and a metal barrier formed within the blocking trench for blocking the optical and electromagnetic waves. Further, the optical module can suppress the optical and the electrical crosstalk due to the optical and the electromagnetic waves directed upward the substrate by a housing body enclosing the substrate, a housing cover provided on the housing body, and a metal slit formed below the housing cover and above the metal barrier.

Abstract: There is provided an optical module incorporating active elements such as light emitting devices or photo detective devices mounted on a single substrate. The optical module can suppress optical and electrical crosstalk by a blocking trench formed between the active elements for blocking optical and electromagnetic waves, and a metal barrier formed within the blocking trench for blocking the optical and electromagnetic waves. Further, the optical module can suppress the optical and the electrical crosstalk due to the optical and the electromagnetic waves directed upward the substrate by a housing body enclosing the substrate, a housing cover provided on the housing body, and a metal slit formed below the housing cover and above the metal barrier.

Abstract: An optical waveguide platform and a method of manufacturing the same are disclosed. The optical waveguide platform comprises an optical waveguide having a lower clad layer, a patterned core layer and an upper clad layer which are laminated on one area of said substrate sequentially, a terrace formed by patterning said lower clad layer, on the other area of said substrate, a metal and a solder formed on said terrace and an optical device mounted on said terrace containing said metal and said solder. According to the present invention, the optical waveguide platform can be manufactured in a simple method without damaging the optical waveguide and the manufacturing cost thereof can be reduced.