Edamitsu
Takashi Edamitsu, Kitasaku-Gun JP
Patent application number | Description | Published |
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20080205079 | Spread illuminating apparatus and display device incorporating same - A spread illuminating apparatus is provided which includes: a light conductor plate having a light inlet surface and two major surfaces; a light source unit disposed at the light inlet surface of the light conductor plate; and a light diffuser pattern disposed at the lower major surfaces of the two major surfaces of the light conductor plate, wherein the light source unit includes first and second white light sources which have respective different light emitting principles, are arranged in the width direction of the light conductor plate with their respective ends set close to one another, and which can be turned on and off independently of each other. | 08-28-2008 |
20120163024 | ILLUMINATOR ALLOWING A WIDE LUMINOUS INTENSITY DISTRIBUTION - An illuminator is provided including: a light source unit composed of a point light source; a light guide plate including an incidence surface into which light emitted from the light source unit is introduced, and an exit surface out which the light that has been introduced from the incidence surface exits; and a prism body where a plurality of prisms are arranged so as to refract the light that has exited out from the exit surface of the light guide plate, wherein the prism body is arranged at a specific area on the entire exit surface of the light guide plate so as to refract part of the light that has exited out from the exit surface of the light guide plate. | 06-28-2012 |
20120275185 | ILLUMINATOR - An illuminator includes a light source unit having an emitting surface for emitting light, and a light distribution control member having a prism surface including a plurality of prisms that have inclined surfaces and are arranged in a plane for two-dimensionally controlling light distribution of light emitted from the light source unit, wherein the prism surface has flat parts. With the light distribution control member, in the light distribution properties of the illumination light of the illuminator, the luminous intensity angular distribution is properly adjusted to have uniform illuminance distributions. | 11-01-2012 |
20130070478 | LIGHT DISTRIBUTION CONTROL MEMBER AND ILLUMINATING DEVICE USING THE SAME - There is provided a light distribution control member with a plurality of first prisms that have inclined surfaces of which each edge of a hexagon is a base edge, and a plurality of second prisms that have inclined surfaces of which each edge of a triangle is a base edge. The first prisms are arranged in a houndstooth pattern, and the second prisms are arranged in areas surrounded by three first prisms. | 03-21-2013 |
Takashi Edamitsu, Fukuroi-Shi JP
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20140104842 | REFLECTING PLATE FOR FRESNEL LENS AND ILLUMINATION DEVICE - There is provided a reflecting plate for a Fresnel lens arranged between the Fresnel lens and a light source, the reflecting plate including: a concave reflecting surface to reflect light emitted from the light source toward the Fresnel lens; a unit to position the light source, the unit being provided at a bottom of the concave reflecting surface; and a unit to position the Fresnel lens, the unit being provided at an open end on a side opposite to the bottom of the concave reflecting surface. | 04-17-2014 |
Toshiaki Edamitsu, Ibaraki JP
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20090185065 | Image pickup apparatus - An image pickup apparatus includes an image-pickup optical system, three color separation prisms separating incident light guided by the image-pickup optical system into three-primary-color light components and emitting the light components, and three image pickup elements respectively receiving the three light components from the prisms so as to produce respective image signals. Of the three prisms, a first prism that first receives the incident light has an edge extending parallel to an incidence plane. The image-pickup optical system has a plate-like fixed aperture stop disposed between the first prism and a final lens, disposed closest to the first prism, of multiple lenses included in the image-pickup optical system. The fixed aperture stop has an aperture that limits the incident light. An edge section of the aperture has projections and depressions arranged at least in parallel to the edge, as viewed from an optical-axis direction of the final lens. | 07-23-2009 |
20130335623 | LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel includes: a lens holding frame holding a lens; a mounting member to which the lens holding frame is mounted; an inclination regulating member regulating a position of the lens holding frame with respect to the mounting member, thereby regulating inclination of the lens holding frame with respect to an optical axis; and an eccentricity regulating member regulating the position of the lens holding frame with respect to said mounting member, thereby regulating eccentricity of the lens holding frame with respect to the optical axis, in which the eccentricity regulating member is supported by said inclination regulating member. | 12-19-2013 |
Toshiaki Edamitsu, Tokyo JP
Patent application number | Description | Published |
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20120182633 | LENS DRIVE MECHANISM, LENS BARREL, AND IMAGING APPARATUS - A lens drive mechanism includes: a lens holding frame that holds a lens and has a guided portion and a nut support; a nut member so supported by the nut support that the nut member pivotally moves around an optical axis of the lens; a lead screw that engages with the nut member and rotates around an axis of the lead screw to move the lens holding frame; and a guide unit that is inserted into the guided portion of the lens holding frame and guides the lens holding frame in the optical axis direction when the lead screw rotates and moves the lens holding frame. The guide unit, the lead screw, and the lens holding frame are accommodated in and attached to a lens barrel housing having an insertion opening, and the lens holding frame is inserted through the insertion opening and accommodated in the lens barrel housing. | 07-19-2012 |
20140293461 | DRIVE DEVICE, LENS BARREL AND IMAGING APPARATUS - A drive device includes a moving body having a driven portion with an engagement holding portion and an insertion portion, and an element holding portion holding an optical element; a piezoelectric driver having a piezoelectric element and a drive axis that moves the moving body while being inserted into the insertion portion; and a leaf spring being inserted into the insertion portion, being held by the moving body and urging the drive axis to the driven portion in a pressing direction. In a state in which the leaf spring is inserted into the insertion portion, the leaf spring is elastically deformed in the insertion portion by inserting the drive axis which is inserted into the insertion portion, and the drive axis is pressed against the driven portion by the leaf spring, while the leaf spring is engaged with the engagement holding portion and held by the moving body. | 10-02-2014 |