Abstract: The inventive concept provides a substrate treating method. The substrate treating method includes pre-treating a substrate by cleaning the substrate; etching the substrate by supplying an etchant and heating a substrate supplied with the etchant; and post-treating the substrate after the etching the substrate, and wherein the pre-treating the substrate, the etching the substrate, and the post-treating the substrate are each performed in different chambers, a substrate on which the pre-treating the substrate is completed is transferred in a dry state to a chamber at which the etching the substrate is performed, and a substrate on which the etching the substrate is completed is transferred in a wetted state with a liquid to a chamber at which the post-treating the substrate is performed.

Abstract: A light emitting module is configured to provide substantially uniform lighting using a plurality of lighting sources. The light emitting module includes a diffusion plate disposed at a set distance from the light emitting module. A light source substrate has a substantially quadrilateral outer perimeter with at least one gap formed therein, and a plurality of light sources are disposed on the light source substrate according to a repeated quadrilateral pattern. A distance between adjacent light sources in the repeated quadrilateral pattern is selected based on the set distance h from the diffusion plate to the light emitting module, and on a greater of two diagonal distances x, y of the quadrilateral pattern. The diffusion plate diffuses light emitted by the light sources to provide substantially uniform light. Various other aspects of the light emitting module are additionally described.

Abstract: There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.

Abstract: A method of manufacturing a lighting device includes filling a plurality of concave portions formed in a mold by applying a liquid-phase resin to the mold. A light transmitting sheet is attached to cover the liquid-phase resin. A plurality of lenses is formed by curing the liquid-phase resin. The light transmitting sheet on which the plurality of lenses are formed is separated from the mold. The light transmitting sheet is cut. A light emitting module is prepared including a body portion containing a plurality of light emitting devices and a groove portion spaced apart from the plurality of light emitting devices, and slidably coupling the cut light transmitting sheet to the groove portion so as to allow positions of the plurality of light emitting devices to be aligned with positions of the plurality of lenses.

Abstract: A lens is provided in an asymmetric shape including at least two curved surfaces with different light distribution angles. Therefore, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased while reducing dazzle. When a lighting apparatus including the lens is used as a street light, light directly incident to a driver is minimized, thereby reducing dazzle to the driver. During a night drive, brightness at a far forward position of the driver may be increased. In addition, light emitted toward a street may be increased while reducing light emitted toward a sidewalk. As a result, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased. Also, light pollution may be reduced.

Abstract: There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.

Abstract: A lighting device includes a light emitting module and a diffusion plate. The light emitting module includes a light source substrate including a spine part and at least one branch part, and a plurality of light sources disposed on the light source substrate and arranged in a repeated diamond shape pattern. The diffusion plate is disposed in a path of light emitted by the light sources. A length ratio of two intersecting diagonals of each diamond in the diamond shape pattern is at least 1:1 and no more than 1:1.5. A distance h between the light sources and the diffusion plate satisfies the expression 0.8??0.0592MH4+0.4979MH3?1.5269MH2+1.9902MH?0.0888, where MH is a ratio of the distance h to the greater of two diagonal lengths of diamonds in the diamond shape pattern.

Abstract: A light emitting module is configured to provide substantially uniform lighting using a plurality of lighting sources. The light emitting module includes a diffusion plate disposed at a set distance from the light emitting module. A light source substrate has a substantially quadrilateral outer perimeter with at least one gap formed therein, and a plurality of light sources are disposed on the light source substrate according to a repeated quadrilateral pattern. A distance between adjacent light sources in the repeated quadrilateral pattern is selected based on the set distance h from the diffusion plate to the light emitting module, and on a greater of two diagonal distances x, y of the quadrilateral pattern. The diffusion plate diffuses light emitted by the light sources to provide substantially uniform light. Various other aspects of the light emitting module are additionally described.

Abstract: A lighting fixture includes a frame having a short protrusion disposed in an outer surface of the frame, the short protrusion having a step structure. At least one light source is disposed inside the frame, and a cover is coupled to the frame to cover the at least one light source. A pair of cap parts each include a coupling groove and supply power to the light source and are each disposed at a respective end of the frame. A terminal part has one end fastened to the coupling groove of one of the pair of cap parts, and has the other end protruding to the outside.

Abstract: There are provided an optical lens and a light source module, and a street lamp having the same. The optical lens includes a concave dome shaped inner surface formed to have a similarly-oval shaped lower surface, and formed to include a plurality of light incident surfaces formed to be stepped along the inner surface thereof and stepped surfaces connecting the plurality of light incident surfaces to one another; and an outer surface formed to surround the inner surface.

Abstract: An optical lens includes: a lens body having an outer surface extending in a longitudinal direction (a first direction) and formed to be symmetrical in a lateral direction (a second direction); and a cavity formed at a lower portion of the lens body and having inner side faces asymmetrical in the longitudinal direction.

Abstract: A lens is provided in an asymmetric shape including at least two curved surfaces with different light distribution angles. Therefore, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased while reducing dazzle. When a lighting apparatus including the lens is used as a street light, light directly incident to a driver is minimized, thereby reducing dazzle to the driver. During a night drive, brightness at a far forward position of the driver may be increased. In addition, light emitted toward a street may be increased while reducing light emitted toward a sidewalk. As a result, uniformity ratio of illuminance and coefficient of utilization (CU) may be increased. Also, light pollution may be reduced.

Abstract: A light emitting apparatus is provided. The light emitting apparatus includes a support unit configured to protrude to a front side to which light is emitted, and a heat emitting unit configured to emit heat generated by the light emission in multiple directions. According to the structure, the heat may be emitted quickly. Therefore, quality of the light emitting apparatus may be increased.

Abstract: There are provided an optical lens and a light source module, and a street lamp having the same. The optical lens includes a concave dome shaped inner surface formed to have a similarly-oval shaped lower surface, and formed to include a plurality of light incident surfaces formed to be stepped along the inner surface thereof and stepped surfaces connecting the plurality of light incident surfaces to one another; and an outer surface formed to surround the inner surface.

Abstract: An optical lens includes: a lens body having an outer surface extending in a longitudinal direction (a first direction) and formed to be symmetrical in a lateral direction (a second direction); and a cavity formed at a lower portion of the lens body and having inner side faces asymmetrical in the longitudinal direction.

Abstract: Disclosed are a portable multimedia player detachably coupled in a microphone case and a microphone-type video-song accompaniment apparatus. The apparatus includes a microphone case and a portable moving picture multimedia player. The microphone case has a head part in which an external microphone is installed, a grip part having a coupling groove, and a microphone connection terminal, an audio line terminal and a video line terminal formed in the coupling groove. The portable moving picture multimedia player has connection terminals formed on an outer circumference thereof to electrically contact the microphone connection terminal, the audio line terminal and the video line terminal, switches the external microphone and an internal microphone in response to coupling or decoupling thereof, operates in a video-song accompaniment mode when coupled, and operates in a portable multimedia player mode when decoupled.