Patent application number | Description | Published |
20100171137 | LIGHT EMITTING DEVICE AND LAYERED LIGHT EMITTING DEVICE - A light emitting device includes a support part, a first cladding layer formed above the support part, an active layer formed above the first cladding layer, a second cladding layer formed above the active layer, and a reflective part formed above the support part and separated from the active layer. At least a portion of the active layer constitutes a plurality of gain regions. Each of the plurality of gain regions is provided at an angle with respect to a line normal to a first lateral surface of the active layer, from the first lateral surface to a second lateral surface of the active layer that is parallel to the first lateral surface. The plurality of gain regions forms at least one gain region pair. A first gain region that is one of the gain region pair is provided in one direction. A second gain region that is the other of the gain region pair is provided in another direction different from the one direction. At least a portion of an end surface of the first gain region, the end surface being located on the side of the second lateral surface, and at least a portion of an end surface of the second gain region, the end surface being located on the side of the second lateral surface, overlap with each other. Light emitted from the end surface of the first gain region, the end surface being located on the side of the first lateral surface, is reflected by the reflective part, and propagates in the same direction or in the focusing direction with light emitted from the end surface of the second gain region, the end surface being located on the side of the first lateral surface. | 07-08-2010 |
20100187966 | LIGHT EMITTING DEVICE - A light emitting device includes a first cladding layer, an active layer formed above the first cladding layer, and a second cladding layer formed above the active layer. At least a portion of the active layer constitutes a gain region. The gain region is continuous from a first end surface provided to a first side surface of the active layer to a second end surface provided to the first side surface. The gain region has a first reflective surface and a second reflective surface for reflecting light generated by the gain region. The first reflective surface and second reflective surface extend from the first end surface to the second end surface. The gain region includes a first portion extending from the first end surface to the first reflective surface in a direction tilted with respect to a normal to the first side surface as viewed two-dimensionally; a second portion extending from the second end surface to the second reflective surface in a direction tilted with respect to a normal to the first side surface as viewed two-dimensionally; and a third portion extending from the first reflective surface to the second reflective surface in a direction tilted with respect to a normal to the first reflective surface as viewed two-dimensionally. A distributed Bragg reflector or a photonic crystal region is provided to at least one of a side of the first reflective surface and a side of the second reflective surface. At least a portion of the light generated by the gain region that passes through the first reflective surface or the second reflective surface is returned to the gain region by the distributed Bragg reflector or photonic crystal region. The light generated by the gain region is emitted from the first end surface and the second end surface. | 07-29-2010 |
20100189150 | LIGHT EMITTING AND RECEIVING DEVICE - A device includes a semiconductor layer including first and second cladding layers sandwiching an active layer, a groove electrically separates receiving and emitting areas, an active layer part forms a continuous region between first and second end surfaces on a first side of the active layer, the gain region has a reflection surface between the first and second end surfaces reflecting gain region generated light, a first gain region portion extending from the first end surface and a second gain region portion extending from the second end surface are tilted, some light from the first portion is reflected to be emitted from the second end surface, some light from the second portion is reflected to be emitted from the first end surface, and some light transmits through a mirror portion of the reflection surface and is received in the receiving area. | 07-29-2010 |
20100232467 | LIGHT EMITTING DEVICE - A light emitting device includes first and second cladding layers and an active layer therebetween including first and second side surfaces and first and second gain regions, a second side reflectance is higher than a first side reflectance, a first end surface part of the first gain region overlaps a second end surface part of the second gain region in an overlapping plane, the first gain region obliquely extends from the first end surface to a third end surface, the second gain region obliquely extends from the second end surface to a fourth end surface, a first center line connecting the centers of the first and third end surfaces and a second center line connecting the centers of the second and fourth end surfaces intersect, and the overlapping plane is shifted from the intersection point toward the first side surface. | 09-16-2010 |
20110051096 | PROJECTOR - A projector includes: at least one light emitting device having a light emitting element adapted to emit a first outgoing light and a second outgoing light proceeding in a direction different from a direction of the first outgoing light; a first light modulation device adapted to modulate the first outgoing light in accordance with image information; a second light modulation device adapted to modulate the second outgoing light in accordance with image information; and a projection device adapted to project the light modulated by the first light modulation device and the light modulated by the second light modulation device, wherein the light emitting element is a super luminescent diode provided with a stacked structure having an active layer sandwiched between a first cladding layer and a second cladding layer, and the active layer has a first emission surface adapted to emit the first outgoing light and a second emission surface adapted to emit the second outgoing light. | 03-03-2011 |
20120001210 | LIGHT-EMITTING DEVICE AND PROJECTOR - A light-emitting device includes a first layer, a second layer, and a semiconductor body interposed between the first and second layers, wherein the semiconductor body has a first fine-wall-shape member, a second fine-wall-shape member, and a semiconductor member interposed between the first and second fine-wall-shape members, the first and second fine-wall-shape members have a third layer, a fourth layer, and a fifth layer interposed between the third and fourth layers, the fifth layer is a layer that generates light and guides the light, the third and fourth layers are layers that guide the light generated in the fifth layer, the first and second layers are layers that suppress leakage of the light generated in the fifth layer, and the propagating direction of the light generated in the fifth layer intersects with the first and second fine-wall-shape members. | 01-05-2012 |
20120229773 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes a first layer that generates light by injection of a current and forms a waveguide of the light, and an electrode that injects the current into the first layer, wherein the waveguide of the light has a belt-like first region and a belt-like second region, the first region has a first part with curvature, the second region has a second part with curvature, the first region and the second region are connected in a reflection part provided on a side surface of the first layer, and a first light output from the first region on a side surface of the first layer as an output surface opposed to the side surface on which the reflection part is provided and a second light output from the second region on the output surface are output in the same direction. | 09-13-2012 |
20120229774 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes a first layer that generates light by injection current and forms a waveguide for the light, and an electrode that injects the current into the first layer, wherein the waveguide has a first region, a second region, and a third region, the first region and the second region connect at a first reflection part, the first region and the third region connect at a second reflection part, the second region and the third region extend to an output surface, a longitudinal direction of the first region is parallel to the output surface, and a first light output from the second region at the output surface and a second light output from the third region at the output surface are output in parallel to one another. | 09-13-2012 |
20120235196 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes a first layer that generates light by injection current and forms a waveguide for the light, and an electrode that injects the current into the first layer, wherein the waveguide of the light has a first region, a second region, a third region, and a fourth region, the first region and the second region are connected at a first reflection part, the first region and the third region are connected at a second reflection part, the second region and the third region are tilted at the same angle and connected to an output surface, a distance between the fourth region and at least one of the first region, the second region, and the third region is a distance that produces evanescent coupling, and the fourth region forms a resonator. | 09-20-2012 |
20120257170 | LIGHT-EMITTING DEVICE AND PROJECTOR - A light-emitting device includes a first layer that forms a waveguide of light and second and third layers that hold the first layer therebetween. The waveguide of the light includes a first region, a second region, and a third region. The first region includes a first portion having a curvature. The second region includes a second portion having a curvature. The first and second regions are connected in a reflecting section on a side surface of the first layer. The third region forms a resonator. A distance between the third region and at least one of the first and second regions is a distance at which evanescent coupling occurs. First light emitted from a light emitting area of the first region and second light emitted from a light emitting area of the second region are emitted in the same direction. | 10-11-2012 |
20120261706 | LIGHT EMITTING DEVICE - A light emitting device includes first and second cladding layers and an active layer therebetween including first and second side surfaces and first and second gain regions, a second side reflectance is higher than a first side reflectance, a first end surface part of the first gain region overlaps a second end surface part of the second gain region in an overlapping plane, the first gain region obliquely extends from the first end surface to a third end surface, the second gain region obliquely extends from the second end surface to a fourth end surface, a first center line connecting the centers of the first and third end surfaces and a second center line connecting the centers of the second and fourth end surfaces intersect, and the overlapping plane is shifted from the intersection point toward the first side surface. | 10-18-2012 |
20130301012 | LIGHT EMITTING DEVICE, SUPER-LUMINESCENT DIODE, AND PROJECTOR - A light emitting device includes a substrate, a laminated body formed by stacking a first cladding layer, a first active layer, a second cladding layer, a third cladding layer, a second active layer, and a fourth cladding layer on the substrate in this order, a first electrode connected to the first cladding layer, a second electrode connected to the second cladding layer and the third cladding layer, and a third electrode connected to the fourth cladding layer, the first active layer generates first light using the first electrode and the second electrode, the second active layer generates second light using the second electrode and the third electrode, and a side surface of the first active layer is provided with an emitting section for emitting the first light, and a side surface of the second active layer is provided with an emitting section for emitting the second light. | 11-14-2013 |
20140204352 | LIGHT EMITTING DEVICE, SUPER LUMINESCENT DIODE, AND PROJECTOR - A light emitting device includes: an active layer; and a first cladding layer and a second cladding layer that sandwich the active layer, wherein the active layer forms an optical waveguide that guides light, a traveling direction of the light guided in the optical waveguide changes at a first reflection part provided on a first side surface of the active layer, and the first reflection part is located outside of a region in which the first cladding layer and the second cladding layer are provided in a plan view. | 07-24-2014 |
20140240678 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes a first layer that generates light by injection current and forms a waveguide for the light, and an electrode that injects the current into the first layer, wherein the waveguide has a first region, a second region, and a third region, the first region and the second region connect at a first reflection part, the first region and the third region connect at a second reflection part, the second region and the third region extend to an output surface, a longitudinal direction of the first region is parallel to the output surface, and a first light output from the second region at the output surface and a second light output from the third region at the output surface are output in parallel to one another. | 08-28-2014 |
20140375960 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes a first layer that generates light by injection of a current and forms a waveguide of the light, and an electrode that injects the current into the first layer, wherein the waveguide of the light has a belt-like first region and a belt-like second region, the first region has a first part with curvature, the second region has a second part with curvature, the first region and the second region are connected in a reflection part provided on a side surface of the first layer, and a first light output from the first region on a side surface of the first layer as an output surface opposed to the side surface on which the reflection part is provided and a second light output from the second region on the output surface are output in the same direction. | 12-25-2014 |
20150062541 | LIGHT EMITTING DEVICE AND PROJECTOR - A light emitting device includes: an active layer; and a first lens, a second lens, a third lens, and a fourth lens on which light generated by the active layer becomes incident. The active layer forms a first optical waveguide and a second optical waveguide. The first optical waveguide has a first bouncing section and a second bouncing section. The second optical waveguide has a third bouncing section and a fourth bouncing section. The first lens is provided at a position overlapping with the first bouncing section. The second lens is provided at a position overlapping with the second bouncing section and the second optical waveguide. The third lens is provided at a position overlapping with the third bouncing section and the first optical waveguide. The fourth lens is provided at a position overlapping with the fourth bouncing section. | 03-05-2015 |
20150070899 | LIGHT EMITTING DEVICE AND SUPER-LUMINESCENT DIODE HAVING LAYER WITH FIRST, SECOND AND THIRD WAVEGUIDES - A light emitting device includes a first layer that generates light by an injection current, the first layer is provided with a first optical waveguide extending from a first light emitting section disposed on a first side surface to a first light reflecting section disposed on a second side surface, a second optical waveguide extending from the first light reflecting section to a second light reflecting section disposed on a third side surface, and a third optical waveguide extending from the second light reflecting section to a second light emitting section disposed on the first side surface, and an element of the group II or the group XII is diffused in the first light reflecting section and the second light reflecting section. | 03-12-2015 |