| PHOENIX ELECTRIC CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110255290 | LIGHT EMITTING DEVICE - The light emitting device comprises: a bowl-shaped reflector; a point light source; and a combined lens provided on the light axis of the point light source. And the combined lens has: a convex lens part having a focal point coinciding with the point light source, refracting center light around the light axis into parallel light; and a concave lens part provided around the convex lens part, and refracting and diffusing light having an angle with the light axis larger than an angle between the center light and the light axis so as to increase the angle with the light axis. A virtual focal point of the light refracted and diffused with the concave lens part coincides with the focal point of the paraboloid of revolution. | 10-20-2011 |
| 20110080728 | LIGHT EMITTING DEVICE - A light emitting device | 04-07-2011 |
| 20110044025 | LIGHT EMITTING DEVICE - The light emitting device comprises a point light source, a solid and transparent light guide, a recess arranged on center of a light receiving surface of the light guide, a concave lens formed on a surface of the recess. A reflecting side surface is a revolving surface determined by revolving a parabola passing through one point of peripheral border of the light receiving surface and the other point of peripheral border of the light radiating surface, and having a focal point on the other point of peripheral border. The point light source is arranged apart from the light receiving surface so as to divide the light from the point light source into light entering into the light guide through the surface of the recess and light entering into the light guide through some part of the light receiving surface other than the recess. | 02-24-2011 |
| 20100171421 | HIGH-PRESSURE DISCHARGE LAMP - The high-pressure discharge lamp includes: an arc tube; sealing portions which respectively have preseal glasses embedded therein, and at least one of which has an inert gas enclosing space which is arranged so as to be in contact with an outer surface of a corresponding the one preseal glass; a pair of feeders including a pair of electrodes, external lead rods, and metal foils, respectively; an external conductor which is arranged on an outer surface of the one sealing portion so as to be corresponded to the inert gas enclosed space, and connected to the external lead rod from the other sealing portion; and an internal conductor which is arranged in the inert gas enclosing space in the one sealing portion, and which has an electric potential identical to that of one feeder corresponding to the one sealing portion around which the external conductor is arranged. | 07-08-2010 |
| 20100164349 | LIGHT EMITTING DEVICE - A light emitting device comprises: a concave mirror having one focal point; a plurality of main light sources each of which is arranged between the focal point and a light reflection surface of the concave mirror, and emits light toward the light reflection surface; and a plurality of main lenses each of which is arranged between a corresponding one of the main light sources and the light reflection surface, refracts the light emitted from the corresponding main light source toward the light reflection surface, and produces a virtual image of the main light source on the focal point situated at a backside of the main light source. | 07-01-2010 |
| 20100142208 | REFLECTOR FOR USE IN LIGHT EMITTING DEVICE AND LIGHT EMITTING DEVICE USING THE SAME - A concave reflecting surface of a reflector for use in a light emitting device has micro reflector segments protruded therefrom in multiple stages and in multiple radial columns, the micro reflector segments each having a convex curved surface which is defined by a locus of a circular arc moved in parallel in a radial direction of the concave reflecting surface, and a radius of the convex curved surface, in each of the reflection regions, is set to be smaller when the convex curved surface is positioned closer to a point on which light emitted from each of the directional light sources and traveling on the light axis is incident, and is set to be larger when the convex curved surface is positioned more distant from the point. | 06-10-2010 |
| 20100026726 | IMAGE PROJECTION SYSTEM BY MEANS OF DIRECT CURRENT TYPE HIGH VOLTAGE DISCHARGE - The image projection system is capable of freely adjusting a tone to suit user preferences. The system has a synchronization signal generating device that generates a synchronization signal composed of a plurality of on-off patterns in synchronism with rotation of a color filter and outputs each of predetermined power levels corresponding one-to-one with the on-off patterns to the high-pressure discharge lamp at fixed timing. | 02-04-2010 |
| 20090230888 | DISCHARGE LAMP OPERATION DEVICE - To improve the startability of a discharge lamp by achieving a smooth transition from a glow discharge to an arc discharge. A discharge lamp lighting device comprises: a direct-current power supply | 09-17-2009 |
