Abstract: Provided is an apparatus that measures a thickness of a coating by selecting a wavelength of a laser based on a color of the coating using a contactless method using a photoacoustic effect and an interferometer, the apparatus including a pulsed laser source to irradiate a pulsed laser beam toward the coating, a continuous wave (CW) laser source to irradiate a CW laser beam toward the coating, a detector to detect an optical interference signal corresponding to the CW laser beam, and a signal processor to process the optical interference signal to calculate a thickness of the coating.

Abstract: Provided is an image extraction method of optical phase extraction system. The image extraction method may include checking whether a phase error due to an environmental disturbance of optical fiber occurs by monitoring an output signal obtained by interfering reflection optical signals reflected through two paths. When a phase error occurs, an error is compensated using a phase compensation control method of closed loop type through one of the two paths and an image is extracted by capturing an image of object in a state that the image of object is shifted by the set phase value when a phase error is compensated. According to the inventive concept, a phase error occurring in an optical fiber type interferometer due to an environmental disturbance is minimized or compensated. Also, since an interference image accurately shifted by the phase value set among arbitrary various phase values is obtained through a camera, reliability of three-dimensional phase information being extracted is guaranteed.

Abstract: The optical transmitter module may include a thermal-electric cooler comprising at least one metal pattern formed on a side of a cooling plate temperature of which is controlled by thermo-electric cooling elements, a laser diode installed in one of the at least one metal pattern, and a monitor photo diode which is installed in another one of the at least one metal pattern and monitors change of light signals emitted from the laser diode. Therefore, since elements are located on the same side of the cooling plate, the optical transmitter module may have a simple structure and an advantage that light signals emitted from the laser diode can be directly coupled to the optical fiber without optical path conversions. Also, since the laser diode is installed with a small gap from thermal-electric elements, the temperature control characteristics of the thermal-electric cooler can be enhanced.

Abstract: Disclosed are an optical probe using a sensor and a method for controlling the same. The optical probe includes: an optical converter to change a light path of light generated from a light source; a vibrator to convert an electrical signal into a mechanical motion; a transmission member to transmit the motion of the vibrator to the optical converter; a position sensor to sense the position of the optical converter; and a controller to adjust the position of the optical converter by controlling the vibrator based on the position sensed by the position sensor.

Abstract: A sunlight coupler is provided, the sunlight coupler may include a beam integrator configured to concentrate beams of sunlight, which may be incident from a plurality of optical fibers, in the form of a single beam, a triplet lens focusing the concentrated beam on a specific position, and an optical fiber provided for transmission of the focused sunlight. The optical fiber may be a thermally-diffusion expand core fiber.

Abstract: Multi-channel optical modules are provided. The multi-channel optical module may include a plurality of optical devices receiving or transmitting optical signals, a housing for optically coupling the plurality of optical devices to an optical fiber, at least one optical filter separating or multiplexing the optical signals according to wavelengths of the optical signals between the optical fiber and the plurality of optical devices, and at least one filter holder protruding into an inside of the housing. The optical filter may be mounted on the filter holder to align optical paths between the optical fiber and the optical devices.

Abstract: Provided is a Petri dish, which improves or maximizes productivity. The Petri dish includes a dish including a bottom and a side wall, and accommodating a culture solution, and a cover covering an upper portion of the dish. The bottom of the dish includes a support region having a first thickness, and a measurement region having a second thickness smaller than the first thickness.

Abstract: Provided is an image extraction method of optical phase extraction system. The image extraction method may include checking whether a phase error due to an environmental disturbance of optical fiber occurs by monitoring an output signal obtained by interfering reflection optical signals reflected through two paths. When a phase error occurs, an error is compensated using a phase compensation control method of closed loop type through one of the two paths and an image is extracted by capturing an image of object in a state that the image of object is shifted by the set phase value when a phase error is compensated. According to the inventive concept, a phase error occurring in an optical fiber type interferometer due to an environmental disturbance is minimized or compensated. Also, since an interference image accurately shifted by the phase value set among arbitrary various phase values is obtained through a camera, reliability of three-dimensional phase information being extracted is guaranteed.

Abstract: Disclosed are an optical probe using a sensor and a method for controlling the same. The optical probe includes: an optical converter to change a light path of light generated from a light source; a vibrator to convert an electrical signal into a mechanical motion; a transmission member to transmit the motion of the vibrator to the optical converter; a position sensor to sense the position of the optical converter; and a controller to adjust the position of the optical converter by controlling the vibrator based on the position sensed by the position sensor.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a cooking cavity, a door, an input selection device provided on an exterior of the door, and a control panel provided in the door and operably coupled to the input selection device. The input selection device may include buttons which are illuminated by a light source provided with the control panel. A guide may be positioned between the control panel and the input selection device to guide the light generated by the light source to the input selection device and concentrate light on the buttons to illuminate the buttons. In this manner, the cooking apparatus may include a selection device on its door including buttons that are effectively illuminated.

Abstract: A display device includes a panel assembly for forming an image, a printed circuit board (PCB) connected with the panel assembly and having a connector; a support member for supporting the panel assembly and having the PCB installed on a rear surface thereof, and a cover member combined with the support member, covering the PCB, and having an opening exposing the connector. A fixing part formed at the opening of the cover member fixes the connector to the PCB.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a cooking cavity, a door, an input selection device provided on an exterior of the door, and a control panel provided in the door and operably coupled to the input selection device. The input selection device may include buttons which are illuminated by a light source provided with the control panel. A guide may be positioned between the control panel and the input selection device to guide the light generated by the light source to the input selection device and concentrate light on the buttons to illuminate the buttons. In this manner, the cooking apparatus may include a selection device on its door including buttons that are effectively illuminated.

Abstract: A display device includes a panel assembly for forming an image, a printed circuit board (PCB) connected with the panel assembly and having a connector; a support member for supporting the panel assembly and having the PCB installed on a rear surface thereof, and a cover member combined with the support member, covering the PCB, and having an opening exposing the connector. A fixing part formed at the opening of the cover member fixes the connector to the PCB.

Abstract: A display device includes a panel assembly for forming an image, a printed circuit board (PCB) connected with the panel assembly and having a connector; a support member for supporting the panel assembly and having the PCB installed on a rear surface thereof, and a cover member combined with the support member, covering the PCB, and having an opening exposing the connector. A fixing part formed at the opening of the cover member fixes the connector to the PCB.

Abstract: Provided is a method and apparatus for enhancing a data transfer rate by adding a new data transfer channel using a differential signal to a conventional MMC. The method includes steps of determining whether a host controller is a host controller for a high-speed multimedia card; determining whether a multimedia card is a high-speed multimedia card; transferring data using a VDAT channel if the host controller is a host controller for a high-speed multimedia card and the multimedia card is a high-speed multimedia card; and transferring the data using a DAT channel in the other cases. A host controller for controlling a multimedia card configures a VDAT channel capable of transferring a differential signal using a reserved terminal of a conventional multimedia card and a newly added terminal, and includes a data channel selection unit for using the configured channel.

Abstract: A display device includes a panel assembly for forming an image, a printed circuit board (PCB) connected with the panel assembly and having a connector; a support member for supporting the panel assembly and having the PCB installed on a rear surface thereof, and a cover member combined with the support member, covering the PCB, and having an opening exposing the connector. A fixing part formed at the opening of the cover member fixes the connector to the PCB.

Abstract: Provided is a method and apparatus for enhancing a data transfer rate by adding a new data transfer channel using a differential signal to a conventional MMC. The method includes steps of determining whether a host controller is a host controller for a high-speed multimedia card; determining whether a multimedia card is a high-speed multimedia card; transferring data using a VDAT channel if the host controller is a host controller for a high-speed multimedia card and the multimedia card is a high-speed multimedia card; and transferring the data using a DAT channel in the other cases. A host controller for controlling a multimedia card configures a VDAT channel capable of transferring a differential signal using a reserved terminal of a conventional multimedia card and a newly added terminal, and includes a data channel selection unit for using the configured channel.

Abstract: A card type USB (Universal Serial Bus) connector, and a USB gender changer and a USB memory card using the card type USB connector. The connector includes a card type plug having a plug body and a plurality of pins on a top of the plug body and a card type receptacle having a receptacle body receiving the card type plug therein. A plurality of pins inside the receptacle body are disposed in correspondence to the plurality of pins of the card type plug so as to be electrically connected. Accordingly, the plurality of pins of the card type plug and the plurality of pins of the card type receptacle are electrically turned on or off according to contact of the plug body to the receptacle body or detachment of the plug body from the receptacle body.