Mitsubishi Chemical Corporation

Konica Corporation

Mitsubishi Kasei Corporation

Akeo Kasakura

Toru Takeda

Yoshihito Satou

Naoto Kijima

Kazuhiko Kagawa

Hiroshi Tomiyasu

Kouta Yoshizawa

Shuuji Onaka

Yutaka Saito

Kiyoshi Goto

Nobumasa Sasa

Hiroaki Sakuta

Yoshihito Sato

Yoshimasa Sakai

Norihito Suzuki

Yasunori Matsushita

Tetsuya Taniguchi

Kimi Ojima

Kazuo Noguchi

Hiroyuki Ooshima

Shinji Takai

Takeshi Kaneda

A spot lighting apparatus includes a first reflection unit, a semiconductor light emitting device, a second reflection unit being provided on an optical axis of the semiconductor light emitting device, and a fixing unit fixing the second reflection unit to be separated from the semiconductor light emitting device, wherein the second reflection unit receives a part of a light released from the semiconductor light emitting device and reflects it toward the first reflection unit, the first reflection unit receives a part of a light released from the semiconductor light emitting device and all or a part of a light reflected on the second reflection unit and reflects them toward the opening part, and the light reflected on the first reflection unit and emitted from the opening part is 80% or more of total lights emitted from the opening part.

Spot lighting apparatus

LED lighting unit

The present invention provides a technology related to an improvement in the performance of releasing heat generated in a semiconductor light-emitting device. In a light-emitting module including a semiconductor light-emitting device provided with at least a semiconductor light-emitting element and a phosphor, and a circuit board, on the circuit board, at least a semiconductor light-emitting device including a plurality of semiconductor light-emitting elements each having a different path of a drive current to be supplied thereto, or a plurality of semiconductor light-emitting devices each having a different path of a drive current to be supplied to the semiconductor light-emitting elements is mounted. The circuit board is provided with a base material portion formed using a heat-conducting material, and a power supply conductor layer for supplying the drive currents of the semiconductor light-emitting elements to the semiconductor light-emitting device. The power supply conductor layer is planarly formed using a heat-conducting material, so as to cover a planar surface of the base material portion, and the planar region of the power supply conductor layer is planarly divided by an insulator for each drive current path.

Circuit board for supporting semiconductor light-emitting device mounted thereon, light-emitting module, lighting apparatus, and lighting system

LED bulb

An illuminating device comprising a plurality of semiconductor light-emitting devices differing in emission color and employing a semiconductor light-emitting element and a phosphor, wherein outputted light is stably combined, separation of light is inhibited, and color tone is variable, and which devices emit light outward on the basis of an emission from the semiconductor light-emitting element and from the phosphor which is excited by emission from the semiconductor light-emitting element to fluoresce or on the basis of emission from the phosphor which is so excited to fluoresce, the deviation duv of which from a blackbody radiation locus being within a range of &#x2212;0.02&#x2266;duv&#x2266;0.02, in the uv chromaticity diagram according to UCS (u,v) color system (CIE 1960), and outputted lights from the light-emitting part in which the plurality of kinds of the semiconductor light-emitting devices are integrated and arranged, are mixed together and emitted outward.

Illuminating device

The light-emitting apparatus includes: a first light-emitting source which emits light of a first chromaticity from a first light-emitting surface; a second light-emitting source which has a second light-emitting surface provided adjacently to the first light-emitting surface and which emits light of a second chromaticity different from the first chromaticity, from the second light-emitting surface; and a lens member having a light-entering surface which is arranged facing the first light-emitting surface and the second light-emitting surface and on which depressions and projections that mix light entering from the first light-emitting source and the second light-emitting source are formed, and a light-exiting surface which radiates light from the first light-emitting source and the second light-emitting source that has entered from the light-entering surface.

Light-emitting apparatus, lighting apparatus and lens

An LED illumination system comprises a light control apparatus, and an LED illumination instrument including first and second LEDs. The light control apparatus includes: a first control unit determining a total amount of average currents to be supplied to the first and the second LEDs at every predetermined cycle depending on an operation amount of a first operation unit; a second control unit determining a ratio between the average currents to be supplied to the first and second LEDs respectively at the every predetermined cycle depending on an operation amount of a second operation unit; and a supply unit generating currents having the total amount of the average currents and the ratio between the average currents determined by the first and second control units at the every predetermined cycle by using a DC power source and supplying the currents to the LED illumination instrument.

Illumination light control apparatus and LED illumination system

An illuminating device comprises one or more luminescent devices (). The luminescent device comprises a semiconductor light emitting element () emitting a excitation light having an peak within a wavelength range from 350 nm to 430 nm, and a luminescent part () comprising a sealing member () and a phosphor () absorbing the light from the semiconductor light emitting element () and emitting a light with different emission spectrum. For the luminescent device (), an excitation light contribution degree &#x394;E, an index quantitatively representing what extent of a visible component of the excitation light is involved in color mixing of a combined light of the luminescent device (), is 0.005 or less, and a mean color rendering index Ra is 70 or more.

A light control apparatus for a LED light-emitting device comprises a driving current supply unit supplying an AC current as a driving current via a pair of terminals to the LED light-emitting device including a set of LED elements having mutually different light emission wavelength regions connected in parallel while providing opposite polarities and the pair of terminals provided to supply the driving current to the set of LED elements; an individual amount defining unit defining a positive driving current amount and a negative driving current amount respectively to be supplied to the LED light-emitting device in a positive half cycle and a negative half cycle included in one cycle of the AC current respectively.

Light control apparatus for light emitting device and illumination system

An illuminating device comprising semiconductor light-emitting devices employing a semiconductor light-emitting element, wherein outputted light is stably combined, separation of light is inhibited, and color tone is variable. Control for operating the light-emitting devices is as simple as possible. It is an illuminating device comprising a light-emitting part comprising a plurality of kinds of semiconductor light-emitting devices which differ in emission color are integrated and arranged, the semiconductor light-emitting devices comprising a semiconductor light-emitting element and a phosphor, and wherein the semiconductor light-emitting devices emit light outward on the basis of an emission from the semiconductor light-emitting element and an emission from the phosphor which is excited by said emission from the semiconductor light-emitting element to fluoresce or on the basis of an emission from the phosphor which is excited by an emission from the semiconductor light-emitting element to fluoresce, wherein the semiconductor light-emitting devices each have an emission color, the deviation duv of which from a blackbody radiation locus being within a range of &#x2212;0.02&#x2266;duv&#x2266;0.02, in the uv chromaticity diagram according to UCS (u,v) color system (CIE 1960), and outputted lights from the light-emitting part in which the plurality of kinds of the semiconductor light-emitting devices are integrated and arranged, are mixed together and emitted outward.

An illuminating device has a solid light-emitting element module and a phosphor module joined to the solid light-emitting element module. The solid light-emitting element module has a plurality of the solid light-emitting elements. The phosphor module has a plurality of phosphor-containing parts corresponding to the individual solid light-emitting elements. Thus, a light-emitting part is provided, which has more than one kind of luminescence sources having the solid light-emitting element and the phosphor-containing part. An illumination intensity of a composite light is 150 lux or more at a distance of 30 cm perpendicularly from the light-emitting surface of the light-emitting part.

Process for disposing of developer for pigment-containing

Disclosed is a light-sensitive litho printing plate requiring no dampening water having a primer layer, a light-sensitive layer and a silicone rubber layer in this order on a support, characterized in that the above primer layer contains (1) an ethylenic unsaturated compound having a polymerizable unsaturated group and (2) a photopolymerization initiator, and has a tensile strength of 10 Kg/cm.sup.2 or more and a Vickers hardness of 70 or less.

Growing community of inventors

Tokyo, Japan

Akeo Kasakura