| Patent Number |
Title Of Patent |
Date Issued |
| 7420892 |
Optical head device, and optical recording/reproducing device |
September 2, 2008 |
| A compact and light flying head type magneto-optical head apparatus is provided. The magneto-optical head apparatus (1) of the present invention comprises a suspension (12) whose one end is fixed to a lower surface of an arm (11), a slider (13) fixed to a free end of the suspension (12), |
| 7403464 |
Lens and combination lens |
July 22, 2008 |
| A lens and combination lens able to suppress deviation of an optical axis of a lens occurring at the time of combination and able to be adjusted at a high precision, a method of producing the combination lens, and an optical pickup device and an optical disk drive mounting the combinatio |
| 7256950 |
Optical device, optical system, method of production of same, and mold for production of same |
August 14, 2007 |
| A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled i |
| 7064906 |
Optical pickup device with shielding to limit incident or emitted light |
June 20, 2006 |
| An optical pickup device and optical disc apparatus of the present invention include an optical element that prevents the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element include at least one substrate |
| 6992842 |
Optical device, optical system, method of production of same, and mold for production of same |
January 31, 2006 |
| A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled i |
| 6985310 |
Optical device, optical system, method of production of same, and mold for production of same |
January 10, 2006 |
| A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled i |
| 6972912 |
Optical device, optical system, method of production of same, and mold for production of same |
December 6, 2005 |
| A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled i |
| 6966707 |
Optical pickup |
November 22, 2005 |
| An optical pickup using an optical fiber module which includes optical fibers is provided, which can be small-sized and utilize a light beam from a light source at high efficiency.The optical pickup includes: an optical fiber module 20, in which an optical fiber 10 consists of: a first o |
| 6898027 |
Optical element and manufacturing method for same |
May 24, 2005 |
| An optical element and manufacturing method of the present invention prevent the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element is configured from at least one substrate having a plurality of lens su |
| 6896419 |
Optical pickup |
May 24, 2005 |
| An optical pickup using an optical fiber module which includes optical fibers is provided, which can be small-sized and utilize a light beam from a light source at high efficiency. The optical pickup includes: an optical fiber module 20, in which an optical fiber 10 consists of: a first |
| 6839188 |
Optical element and optical pickup |
January 4, 2005 |
| The system and methods of the present invention are directed to an optical pickup. The optical includes at least a light source, a lens for focusing and irradiating light from the light source on a recording medium, and an optical pickup element. The optical pickup element includes a len |
| 6827770 |
Metal chelated dyestuff for inkjet recording, aqueous inkjet recording liquid comprising same an |
December 7, 2004 |
| A metal chelated dyestuff for inkjet recording comprising a water soluble azo metal chelated compound formed by an azo-based compound represented by the following general formula (1) having one or more hydrophilic group per molecule and a metal element; an aqueous inkjet recording liquid |
| 6825995 |
Optical device, optical system, method of production of same, and mold for production of same |
November 30, 2004 |
| A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled i |
| 6755903 |
Metal chelated dyestuff for inkjet recording and aqueous inkjet recording liquid using the same |
June 29, 2004 |
| A metal chelated dyestuff for inkjet recording is described, which is a water soluble azo metal chelated compound formed from an azo compound represented by the following general formula (1) and a metal element and is good at the clearness of color tone, light resistance, indoor disc |
| 6717738 |
Optical element, metal mold for producing optical element and production method for optical elem |
April 6, 2004 |
| An approximately rectangular parallelopiped shaped optical element 100 has a substrate (base) 101, a lens 102, and an axially symmetric convex portion 103D formed in an upper surface 100U of the substrate 101. The radius of curvature of the surface of this convex portion 103D is appr |
| 6560391 |
Optical switch and optical disk drive |
May 6, 2003 |
| Disclosed herein is an optical switch including: a dielectric substrate having a pair of main surfaces opposed to each other; and a pair of electrodes formed on the main surfaces of the dielectric substrate; wherein a direction of emergence of a light beam propagating in the dielectr |
| 6473542 |
Optical switch and optical disk drive |
October 29, 2002 |
| Disclosed herein is an optical switch including: a dielectric substrate having a pair of main surfaces opposed to each other; and a pair of electrodes formed on the main surfaces of the dielectric substrate; wherein a direction of emergence of a light beam propagating in the dielectr |
| 6411420 |
Electro-optical element, and method of driving and method of manufacturing the same |
June 25, 2002 |
| Polarization inversion domains 2 are irregularly formed in a ferroelectric substrate 3 constituting an electro-optical element 1 at least in the propagation direction of a light beam A. An A.C. current signal is applied between electrodes 4 and 5. It is thereby arranged to disturb the ph |
| 5996790 |
Watertight equipment cover |
December 7, 1999 |
| A watertight equipment cover for outdoor or marine use that includes an interior and exterior surface, with the interior surface configured to fit substantially adjacent to and to completely enclose a piece of equipment such as photographic equipment or portable electronic equipment. The |
| 5993525 |
Recording liquid |
November 30, 1999 |
| A recording liquid is disclosed comprising an aqueous medium and at least one dye selected from the dyes of which free acid form is represented by the following formula (I): ##STR1## |
| 5894363 |
Electro-optical element |
April 13, 1999 |
| An electro-optical element such as a light deflection element which allows high speed random accessing and can provide a large deflection angle and wherein a plurality of of functions can be integrated stably with a high degree of accuracy in a single element. The electro-optical element |
| 5786926 |
Electro-optical device having inverted domains formed inside a ferro-electric substrate and elec |
July 28, 1998 |
| An electro-optical device such as an optical deflector comprising a ferro-electric substrate, electrodes provided on principal surfaces of this substrate and an inverted domain having a polygonal, e.g. triangular shape formed in the substrate, at least one of the domain walls of these |
| 5609673 |
Recording liquid |
March 11, 1997 |
| A recording liquid comprising an aqueous medium and at least one dye selected from dyes, the free acid forms of which are represented by formula (I): ##STR1## All the symbols in formula (I) are defined in the description. |
| 5588732 |
Video lighting apparatus and electrode apparatus therefor |
December 31, 1996 |
| A lighting apparatus is comprised of an illumination unit arranged so as to project from a light apparatus body by a predetermined distance, a spring for spring-biasing the illumination unit in the direction in which the illumination unit is projected from the light apparatus body, a pow |
| 5526173 |
Method of local domain control on nonlinear optical materials |
June 11, 1996 |
| A plurality of first electrodes are disposed on one of opposite surfaces of a nonlinear optical material substrate which is divided into single domains. Each of the first electrodes is made of an electric conductor having a width which is equal to or smaller than half the width of a |
| 5480478 |
Recording liquid |
January 2, 1996 |
| A recording liquid comprising an aqueous medium and at least one dye selected from dyes, a free acid form of which is represented by formula (I), (II), (III) or (VI), the symbols in the formulae being defined in the specification: ##STR1## |
| 5249250 |
Optical device having domain structure and method for manufacturing the same |
September 28, 1993 |
| An optical device having a periodic inverted domain construction is used for second harmonic generating devices or the like. The optical device comprises a ferroelectric crystal substrate which is provided in this surface with a periodic inverted domain structure consisting of a plur |
