Patent application number | Description | Published |
20090067152 | ROTATING LAMP - The inventive rotating lamp comprises a substrate, a translucent globe mounted on the substrate, a shaft portion set in the substrate, a rotatable member rotatably supported by the shaft portion, a main reflecting mirror, arranged on the upper surface of the rotatable member, having a light reflecting surface constituted of a paraboloid, a light-emitting diode and a drive portion rotating/driving the rotatable member, and the optical axis of the light-emitting diode and the reflecting surface of the main reflecting mirror intersect with each other. Thus, a rotating lamp employing a light-emitting diode capable of delivering light emitted from the rotating lamp to a distance place by improving reflection efficiency can be obtained. | 03-12-2009 |
20090091914 | ROTATING LAMP - A rotating lamp comprises a translucent globe, a shaft portion, arranged in the globe, made of a material containing metal, an LED device provided on the shaft portion, a rotatable support member rotatably set along the outer peripheral direction of the shaft portion, a reflecting mirror supported by the rotatable support member for reflecting light received from the LED device, a driving portion rotating/driving the rotatable support member and a heat radiating portion provided on the shaft portion. Thus, heat generated in LED devices can be discharged and a problem resulting from heat can be solved. | 04-09-2009 |
Patent application number | Description | Published |
20090148114 | THREE-DIMENSIONAL PHOTONIC CRYSTAL AND MANUFACTURING METHOD THEREOF - A three-dimensional photonic crystal includes a structure that includes first, second, third, and fourth layers in this order. The structure of each layer includes a flat surface as one end surface, and first, second, and third structural portions. The first structural portion has a first width along the flat surface and a first height from the flat surface. The second structural portion has a second width larger than the first width and a second height larger than the first height. The third structural portion has a width and a height that continuously or stepwise change in the extending direction of the structure. The flat surface at the structural portion of one of two adjacent layers in the first layer to the fourth layer contacts a surface opposite to the flat surface at the second structural portion of the other of the two adjacent layers. | 06-11-2009 |
20090201960 | THREE-DIMENSIONAL PHOTONIC CRYSTAL LIGHT EMITTING DEVICE - The three-dimensional photonic crystal light emitting device includes a three-dimensional photonic crystal, and a defect forming a resonator in the three-dimensional photonic crystal. In the three-dimensional photonic crystal, an N-cladding layer formed of an N-type semiconductor, an active layer disposed inside the resonator, a P-cladding layer formed of a P-type semiconductor, a tunnel junction layer, and a first N-conductive layer formed of a first N-type conductor are arranged in this order. Electric conductivity of the first N-type conductor is higher than that of the P-type semiconductor. The light emitting device achieves high carrier injection efficiency and a high optical confinement effect. | 08-13-2009 |
Patent application number | Description | Published |
20120069565 | LIGHT-EMITTING DEVICE AND IMAGE DISPLAY APPARATUS USING THE SAME - A light-emitting device includes a light-emitting layer and a fine structure layer that opposes the light-emitting layer, and light generated in the light-emitting layer passes through the fine structure layer. In the light-emitting device, the fine structure layer includes a plurality of first medium portions and a second medium that has a different refractive index from a refractive index of the first medium, and the plurality of first medium portions are each surrounded by the second medium in an in-plane direction of the fine structure layer. In the light-emitting device, each first medium portion is formed to have a rotated ellipsoidal shape, which has a major axis extending in a direction perpendicular to a surface opposite the light-emitting layer, and is defined by a path of an ellipse rotated about the major axis as a rotation axis. | 03-22-2012 |
20120182371 | OPTICAL WRITING HEAD AND IMAGE FORMING APPARATUS - An optical writing head allows the formation of a light collective spot with a small diameter and the acquisition of a deep focal depth to go together. An optical writing head includes a light emitting element array in which a plurality of light emitting elements is arranged, and a lens system including a lens array configured to concentrate luminous flux radiated from the light emitting element to a predetermined image plane, in which the lens system is telecentric on the image side and satisfies the following conditional expression, where a wavelength at which luminous flux radiated from the light emitting element has a peak light intensity is λ | 07-19-2012 |
20120224018 | Optical Writing Head and Image Forming Apparatus - There are provided an image forming apparatus and an optical writing head having a simple configuration can be assembled at low cost, unlike the prior art, without requiring any accurate alignment of the light emitting device array and the rod lens array thereof. The optical writing head includes a light emitting device array formed by arranging a plurality of light emitting devices in a main scanning direction and an optical unit arranged between the light emitting device array and an image plane to form an image by rays of light emitted from the light emitting devices on the image plane; the light emitting devices operating as light source portion for emitting parallel rays of light, the optical unit being formed by a two-dimensional grating. | 09-06-2012 |
20120326182 | IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY APPARATUS MANUFACTURING METHOD - Provided is an image display apparatus in which color breakup of a reflection image formed from reflected ambient light may be reduced to suppress the influence of an ambient environment. The image display apparatus includes multiple pixels. Each of the pixels includes a light-emitting layer and a structure layer having a refractive index distribution in an in-plane direction parallel to a screen of the image display apparatus, for extracting light generated from the light-emitting layer. The structure layer includes multiple structures formed of a first medium and a layer formed of a second medium having a refractive index different from a refractive index of the first medium. The multiple structures are non-periodically arranged in the layer. Reflected ambient light is reflected by the multiple structures formed of the first medium to have an overlap range to reduce color breakup of a reflection image formed from the reflected ambient light. | 12-27-2012 |
20140063234 | DISTANCE CALCULATING APPARATUS, IMAGE PICK-UP APPARATUS USING THE SAME, DISTANCE CALCULATING METHOD, PROGRAM FOR REALIZING DISTANCE CALCULATION, AND STORAGE MEDIUM HAVING THE PROGRAM STORED THEREON - The distance calculating apparatus detects an object distance to an object based on a first object image signal formed by a luminous flux passing through a first pupil region of an imaging optical system and a second object image signal formed by a luminous flux passing through a second pupil region of the imaging optical system, which are generated by using an imaging device including multiple pixels. The imaging device includes a first and a second photoelectric conversion sections. The first and the second photoelectric conversion sections generate the first and the second object image signals, respectively. The first and the second pupil regions have asymmetric pupil region shapes in an exit pupil of the imaging optical system. An object distance calculation unit detects the object distance by a DFD method based on a difference in bokeh of the first and the second object image signals. | 03-06-2014 |
20140306095 | SOLID-STATE IMAGING DEVICE AND IMAGING APPARATUS - A solid-state imaging device includes a plurality of pixels, wherein one or more of the plurality of pixels have a pupil dividing portion and a light receiving portion, the light receiving portion includes a plurality of photoelectric conversion regions, an element isolation region is provided between adjacent ones of the plurality of photoelectric conversion regions, and wherein a scatterer is provided within the pupil dividing portion and above the element isolation region, and the scatterer is formed from a material of a refractive index smaller than a refractive index of a material of the pupil dividing portion peripheral to the scatterer. | 10-16-2014 |