Abstract: The invention relates to a laboratory climatic cabinet, in particular a gassed incubator, having an interior enclosed by a housing and the steam generator arranged outside the interior, which is connected to the interior via a steam feed line. The steam generator is designed as an essentially unpressurized container having a base area and a steam region located above it, the base area being designed to accommodate a water reservoir and being provided with a heating device for heating the water reservoir, the steam feed line leaving the steam generator in the area of the steam region and an air feed line opening into the steam generator, in order to feed ambient air to the steam generator and to introduce air enriched with water steam via the steam feed line in essentially unpressurized form into the interior of the incubator.

Abstract: The problem addressed by the present invention consists in providing an LED luminaire which corresponds to the known shapes for incandescent bulbs both in terms of contour and size and which enables illumination similar to that of an incandescent bulb by means of the light-emitting means both in terms of the emission response and the luminous intensity of said luminaire. The heat sink which is required for technical reasons and which bears the light-emitting means itself predetermines the shape of the incandescent bulb and the emission of the LEDs for this purpose. The heat sink can in this case be in the form of one body or can comprise a plurality of separate heat sinks, which are arranged about a central axis so as to be associated with the respective light-emitting means.

Abstract: An illumination source for a camera includes one or more LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LEDs, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for driving the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed, the control circuit changing a pulse characteristic to adjust a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output. Some embodiments provide an illumination source including a housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.

Abstract: An LED light source assembly for signage illumination includes one or more planar LED arrays located with respect to a light spreading system for uniformly distributing light onto a viewing surface. The light spreading system includes a plurality of reflectors in combination with a transverse deflector disposed directly above and in the light emanating path of a planar LED array. The transverse deflector is oriented angularly and projects at least a portion of light onto a lateral reflector of the light spreading system. In one embodiment, a heat dissipation fixture is supported external to a housing assembly for improved heat management. The LED arrays and the plurality of reflectors and transverse deflectors are affixed directly to the heat dissipation fixture.

Abstract: A lamp cover containing phosphor for providing white light emission is disclosed. The lamp cover is comprised of a light-partial-reflective cap structure providing the outer surface of the lamp cover, wherein the light-partial-reflective cap structure is composed of a plurality of light transparent layers and a plurality of vacuum layers that are stacked in an alternating manner from outside to inside, a supporting transparent cap structure providing the inner surface of the lamp cover, and a phosphor mixed structure mechanically supported by the outer surface of the supporting transparent cap structure, wherein the outer surface of the phosphor mixed structure is adjacent to the most inner vacuum layer of the light-partial-reflective cap structure. Once the lamp cover is combined with a phosphor exciting light source, the light-partial-reflective cap structure partially prevents phosphor exciting light from escaping from the lamp cover by using Fresnel reflection.

Abstract: An optical semiconductor based illuminating apparatus including a housing having an opening portion, a lighting unit disposed adjacent to the housing that includes at least one optical semiconductor, a power supply mounted within the housing that supplies power to the lighting unit, and a gate unit connected to the opening part that opens and shuts the inner housing.

Abstract: A light source control device according to the present invention includes an image capturing unit for capturing an image by using light emitted from a light source and reflected or scattered on a subject; a user interface for receiving information regarding optical characteristics of the light source; a control unit for generating a light source control signal for setting a lighting state of the light source by using the received information regarding optical characteristics; and a wireless communication module for transmitting the generated light source control signal to the light source.

Abstract: An optical semiconductor-based tube type lighting apparatus capable of enlarging light distribution to have improved assembly characteristics. The lighting apparatus includes an elongated light-transmitting tube, and a plurality of optical semiconductor modules arranged along a circumference of the light-transmitting tube and separated from each other in a cross-sectional view of the light-transmitting tube. Each of the optical semiconductor modules is placed on a point, which is not on a central axis line of light emitted from other optical semiconductor modules, so as not to face another optical semiconductor module at an opposite side thereof.

Abstract: A dimming controlling apparatus including: a lighting driving unit for driving a lighting appliance; a power supply unit for supplying power required to drive the lighting appliance; a storage unit for storing a plurality of dimming profiles including time zones for driving the lighting appliance and dimming levels in accordance to the time zones; and a controller for controlling the lighting driving unit and the power supply unit by using the dimming profiles. An operating time of the lighting appliance is divided into a plurality of time zones, and dimming profiles are generated to include an intensity of illumination for driving the lighting appliance in each of the plurality of time zones and each of the time zones.

Abstract: An LED lighting system is provided for connection to a variable power source providing input power, the LED lighting system having at least one power analyzing and processing circuitry connecting to the variable power source, and being configured to identify one or more characteristics of the input power, where the characteristics are selected from amplitude, frequency and pulse width of the input power, compare one or more of the characteristics of the input power to preset control criteria either in hardware or software or both to yield a comparison result, and then control the current control circuitry according to the comparison result.

Abstract: Embodiments of the invention provide an optical semiconductor-based tube type lighting apparatus capable of enlarging light distribution to have improved assembly characteristics. The lighting apparatus includes an elongated light-transmitting tube; a linear slit formed on the light-transmitting tube in a longitudinal direction thereof; and at least one bar-shaped optical semiconductor module secured to the light-transmitting tube, with edges of the slit fitted into side surfaces of the bar-shaped optical semiconductor module. Here, the optical semiconductor module includes a heat sink, a PCB attached to the heat sink, and an array of semiconductor optical devices arranged on the PCB. The heat sink is partially exposed from the light-transmitting tube through the slit.

Abstract: An LED display with a reduced thickness is described. In one embodiment, the LED display includes a second support plate between a front support plate and a back support plate. The second support plate enables the front support plate to be thinner than if the second support plate was not included. The second support plate increases the distance between an LED chip and a light exit surface thereby allowing the front support plate thickness to be reduced by about the thickness of the second support plate. In one embodiment, the second support plate allows the thickness of an LED display to be thinner. The second support plate adds structural integrity to a back support plate. Therefore, the back support plate can be thinner, and thickness of the LED display can be reduced.

Abstract: An omnidirectional semiconductor light emitting device lamp has a light distribution characteristic having a large range similar to that of a general incandescent lamp. The semiconductor light emitting device lamp includes a light emitting device for emitting light in all directions and reflection plates arranged at a front surface and a lateral surface of the light emitting device. The light emitted from the light emitting device is reflected from the reflection plate located at the front side and the reflection plate located at the lateral side and emitted to a rear side of the light emitting device. A reflection film is formed on all exposed portions of a surface of the substrate on which the light emitting device is mounted.

Abstract: A light emitting module with improved optical functionality and reduced thermal resistance is described, which comprises a light emitting device (LED), a wavelength converting (WC) element and an inorganic optically-transmissive thermally-conductive (OTTC) element. The WC element is capable of absorbing light generated from the LED at a specific wavelength and re-emitting light having a different wavelength. The re-emitted light and any unabsorbed light exits through at least one surface of the module. The OTTC is in physical contact with the WC element and at least partially located in the optical path of the light. The OTTC comprises one or more layers of inorganic material having a thermal conductivity greater than that of the WC element. As such, a compact unitary integrated module is provided with excellent thermal characteristics, which may be further enhanced when the OTTC provides a thermal barrier for vertical heat propagation through the module but not lateral propagation.

Abstract: A light emitting module comprises a light emitting device (LED) mounted on a high thermal dissipation sub-mount, which performs the traditionally function of heat spread and the first part of the heat sinking. The sub-mount is a grown metal that is formed by an electroplating, electroforming, electrodeposition or electroless plating process, thereby minimizing thermal resistance at this stage. An electrically insulating and thermally conducting layer is at least partially disposed across the interface between the grown semiconductor layers of the light emitting device and the formed metal layers of the sub-mount to further improve the electrical isolation of the light emitting device from the grown sub-mount. The top surface of the LED is protected from electroplating or electroforming by a wax or polymer or other removable material on a temporary substrate, mold or mandrel, which can be removed after plating, thereby releasing the LED module for subsequent processing.

Abstract: A light engine for a high intensity light that may be compliant with FAA or ICAO standards is disclosed. The light engine includes a first light emitting module having a light emitting diode mounted in a horizontal plane. A reflector has a reflective surface in perpendicular relation to the light emitting diode. The reflective surface is defined by combining the integrals of a required beam emission specification with the integrals of the light emitting diode. The resulting reflective curve is modified with focal length and curve based on horizontal plane position variables relative to the light emitting diode around an azimuth angle.

Abstract: Embodiments of the invention provide optical semiconductor-based tube type lighting apparatuses. The optical semiconductor-based tube type lighting apparatus includes an elongated light-transmitting tube, and a plurality of optical semiconductor modules arranged along a circumference of the light-transmitting tube and separated from each other in a cross-sectional view of the light-transmitting tube. Here, each of the optical semiconductor modules is placed so as not to face another optical semiconductor module at an opposite side thereof.

Abstract: A white light emitting device including: a blue light emitting diode chip having a dominant wavelength of 443 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue light emitting diode chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, and the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.5030) based on the CIE 1931 color chromaticity diagram.

Abstract: A semiconductor light emitting device includes: a light emitting diode unit including a light-transmissive substrate having a face sloped upwardly at a lower edge thereof. A rear reflective lamination body is formed on the lower face and the surrounding sloped face of the light-transmissive substrate. The rear reflective lamination body includes an optical auxiliary layer and a metal reflective film formed on a lower face of the optical auxiliary layer. A junction lamination body is provided to a lower face of the rear reflective lamination body. The junction lamination body including a junction metal layer made of a eutectic metal material and a diffusion barrier film.

Abstract: A programmable LED constant current driver circuit for driving LEDs at constant current and dimming the LEDs using standard, off-the-shelf dimmers is provided. The current driver circuit of the present disclosure includes a temperature compensation feature which controls the on time for the LEDs based on a measured temperature of the current driver and associated circuits. In another embodiment, the current driver circuit is designed to receive a 24 VAC input and drive one or more LEDs in a transformer-based system dimming system.