Lg Electronics Inc.

Goldstar, Co., Ltd.

Jong Uk Bu

Young Joo Yee

Keun Y Yang

Ki Chang Song

Cheol Soo Park

Sung Woo Noh

Hyouk Chon Kwon

Chil Keun Park

Kwang Gyun Jung

Young Cho Shim

Tae Yun Kim

Disclosed are an optical recording reproducing apparatus which can effectively remove contamination material attached thereto and an optical recording medium used in the optical recording reproducing apparatus. To this end, the apparatus comprises: a catalyst layer formed at a specific part thereof; and a light irradiation unit for irradiating light on the catalyst layer. An optical disc used in an optical recording reproducing apparatus includes a catalyst layer.

Optical recording reproducing apparatus and optical recording medium used therein

High density near field optical recording/reproducing device, including a light source for emitting a bean of light, a converging lens for converging the light emitted from the light source, and a near filed light generating part formed of a material of which light transmittance is varied with light temperature sectors, thereby overcoming a limit of resolution coming from diffraction, whereby increasing a recording density, significantly.

Near field optical recording/reproducing device

Etching method applicable to a semiconductor device fabrication and an MEMS(Micro-Electro-Mechanical System) process, including the steps of forming an etching mask on a substrate, forming a plurality of patterns in the etching mask corresponding to depths of the plurality of trenches; and etching the substrate using the etching mask having the plurality of patterns formed therein, whereby eliminating an alignment error in respective photolithography, that permits to form a precise structure, simplify a fabrication process, and reduce a production cost.

Etching method

Light source module with two wavelengths including a first and a second laser diodes each for emitting a laser beam with a wavelength different from each other, and a submount formed between the first and second laser diodes having a vertical mirror surface vertical to bonding surfaces of the first and second laser diodes for reflecting laser beams from the first and second laser diodes in a same direction.

Light source module with two wavelength

A different wavelength type of optical source module which generates light beams different in wavelength. In the optical source module, laser diodes are provided to be opposed to each of reflective films which is arranged to make a shape of a mountain. These respective laser diodes generates laser light beams different in wavelength. The light beams generated at the laser diodes are reflected by the reflective films at a right angle to progress along the same path.

Optical source module for generating beams with different wavelengths

An annular shutter mirror which can selectively shut off a part of light beams progressing toward a target in the progressing direction thereof. The annular shutter mirror utilizes a fixed reflection face to reflect an incident light beam at a constant angle in accordance with an incident angle of the incident light beam. Around the periphery of the fixed reflection face, at least one flexible reflection face is formed in a shape of annular band. This at least one flexible reflection face selectively reflects an incident light beam at an angle different from a reflective angle of the fixed reflection area in accordance with an application condition of an electrical field.

Annular shutter mirror

A microwave oven includes at least two sensors for detecting heat rays emitted from the food which is being heated, a signal processor for obtaining a precise surface temperature of food, irrespective of the deviation of distances between the sensors and food, using output signals from the sensors, and a controller for receiving the output signal of the signal processor to recognize the cooking status of the food and controlling the heating of the food in accordance with the recognized cooking status.

Microwave oven with multi-infrared sensors disposed at different

A method for calculating a PMV for an air conditioning system having a body sensor and a temperature sensor includes the steps of sensing a thermal change a human body senses due to room air circulation using the body sensor, and converting the sensed thermal change into a digital value, sensing a room temperature using the temperature sensor, and converting the sensed room temperature into a digital value, assigning parameters according to human bodily activities and amount of clothes a man wears classified by seasons and times, and calculating a PMV by computing the value of thermal change converted into a digital value, the value of room temperature converted into a digital value, and the parameters.

Method for calculating PMV of air conditioning system

This invention is related to a sensor for detecting food temperature, which can control cooking more precisely by detecting change of food temperature utilizing the heat absorption rate difference of black bodies and non-black bodies to permit cooking control when cooking below boiling point, such as thawing or warming up.

Microwave oven employing thermopile type sensor

A temperature comfort sensing device is disclosed which comprises a single diaphragm having a thin film heater and a temperature sensor. A plurality of thermocouples, a room temperature sensor and a black body are formed over the single diaphragm. The thin film heater corresponds to an internal heat exchanging mechanism of a human being, and the thermocouples serve to sense skin temperature condition.

Thermal comfort sensing device

This invention relates to a method for automatic control of a microwave oven which can make precise cooking control available by classifying the cooking control into cases when cooking is completed below the boiling point of water, such as thawing or warming up, and cases when cooking is completed above the boiling point of water. For types of cooking which are complete without water boiling, the invention sets the initial cooking time period by determining the time it takes for the output voltage of a temperature detection sensor to reach a rise starting point. For types of cooking which include water boiling, the invention sets the initial cooking time period by determining the time it takes for the output voltage of the temperature detection sensor to reach a maximum rise point. The invention then sets an additional time period equivalent to the initial time period multiplied by a cooking constant corresponding to the type of cooking that is desired.

Method for automatic control of a microwave oven

This invention relates to a sensor for detecting ultra-violet rays suitable for mass-production. The sensor for detecting ultra-violet rays includes one that is formed by junction of an upper layer with a lower layer so as to face each other across an air cavity, which lower layer includes a silicon substrate having a cavity, an insulation layer formed on all over the silicon substrate, a photoelectric pole part formed on the insulation layer and a protection layer formed on the photoelectric part, and which upper layer includes a glass substrate having a transmissive characteristic to ultra-violet rays, and an anode part formed on the glass substrate.

Sensor for detecting ultra-violet rays

A temperature comfort sensing device and a method for manufacturing the same, capable of achieving comfortable air conditioning by detecting an average temperature comfort sensitivity to a room environment and thus analogizing a correct predicted mean vote value. The temperature comfort sensing device comprises a lower diaphragm having a thin film heater and a temperature sensor, and an upper diaphragm having a plurality of thermocouples, a room temperature sensor and a black body. Alternatively, the temperature comfort sensing device comprises a single diaphragm having a thin film heater and a temperature sensor. Directly formed over the single diaphragm are a plurality of thermocouples, a room temperature sensor and a black body. The sensor is based on a model of the human body, with the thin film heater corresponding to an internal heat exchanging mechanism of a human being. The thermocouples serve to sense a skin temperature condition.

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Kyonggi-do, South Korea

Jong Uk Bu