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Match Document Document Title
7636290 Optical element, optical objective element, and optical pickup apparatus having diffractive structure and optical difference giving structure  
An optical element comprises: a diffractive structure having a plurality of diffracting ring-shaped zones arranged around an optical axis on at least one optical surface; and an optical path...
7593305 Removing spherical aberrations for two photon recording  
A system and method is provided for adjusting a depth of focus in a refractive material without introducing spherical aberration as a result of the focal adjustment. The system and method provide a...
7586826 Compatible optical pickup  
An optical pickup which is compatible with at least one high density recording medium that uses a blue-violet beam and at least one lower density recording medium, the optical pickup including: an...
7551371 Optical pickup apparatus and optical disc apparatus  
There is provided an optical pickup apparatus which includes a light source that generates light irradiating an optical recording medium; and an objective lens that collects the light irradiated...
7542637 Coupling optical system, optical element and optical pickup apparatus  
The present invention relates to a coupling optical system, an optical element, and an optical pickup apparatus. A coupling optical system is provided for use in an optical pickup apparatus and is...
7483358 Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith  
A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a...
7463571 Optical element, optical pickup, and optical information recording/reproducing apparatus  
The hologram ( 20 ) for spherical aberration correction is formed in optical element ( 10 ). With respect to the first laser light which requires the largest effective diameter, the hologram does...
7463401 Integrated micro-optical systems  
An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers, at least one of the two optical...
7433290 Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server  
A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm...
7408866 Objective lens for optical pickup apparatus, optical pickup apparatus and optical information recording reproducing apparatus  
An objective lens, comprises a first diffractive structure having plural concentric ring-shaped zones. A n 1 -th order diffracted ray is converged on an information recording surface of first...
7372794 Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens  
A compatible optical pickup compatibly using a high density recording medium and at least one low density recording medium, includes an objective lens to form a light spot suitable for use on a...
7359294 Optical scanning device with tilt detection  
This invention relates to an optical scanning device for scanning an optical record carrier and detecting a tilt characteristic of the optical record carrier during scanning. The device includes a...
7315503 Optical pick-up device using micromirror array lens  
An optical pick-up device comprising at least one micromirror array lens. The micromirror array lens enables focusing, tracking, and/or tilt compensation in the optical pick-up device without...
7292517 Optical scanning device for use with multiple types of record carrier surfaces  
An optical scanning device for scanning of a first, second and third type of optical record carrier with radiation of a first wavelength λ 1 , a second wavelength λ 2 and a third wavelength λ 3...
7274646 Object lens for an infinite-type optical pickup, optical pickup and optical information processing device  
As an object lens for an optical pickup, applied is a single-lens and both-side-convex configuration is applied. Further, specific conditional formulas are created with respect to a particular...
7260048 Object lens for optical pickup and method for designing the same  
An optical pickup records data in or reproduces data from optical recording media respectively having recording faces at different heights, and includes a semiconductor laser diode array having...
7224662 Objective lens for optical pickup  
An objective lens for an optical pickup is configured such that, when a light beam having a wavelength corresponding to the optical disc requiring the higher NA is converged on the optical disc...
7126905 Information recording medium and information recording/reproducing apparatus to increase recording density  
An information recording medium 101 includes: a transparent substrate 109 having a first surface A and a second surface B opposite to the first surface A; reflectance reduction means 110 ...
7126904 Optical disk device  
A first light ray with a wavelength λ1 emanating from the first emission light source passes through the transparent substrate and is condensed by the objective lens on a signal surface of a first...
7102981 Optical scanning device  
An optical scanning device is used for scanning first and second information layers with first and second radiation beams. The device includes a radiation source and an objective lens assembly ( 31...
7099260 Objective lens for optical disk  
An objective lens for an optical disk including one lens and capable of satisfying an excellent focusing property on any of two kinds of optical disks each having a different thickness. The...
7085219 Optical lens and optical information recording and reproducing apparatus  
An optical lens for condensing a light emitted from a laser light source on an optical recording medium, the light having a wavelength λ 1 within a wavelength range from 400 nm to 440 nm,...
7082000 Aspherical lens with grating  
An aspherical lens ( 10, 10′ ) has an aspherical surface ( 101, 101′ ) and an opposite flat surface ( 102, 102′ ). A multiple-step grating is defined in the flat surface by a...
7054254 High NA objective lens for optical pick-up  
A single-element objective lens is employed in an optical pick-up. The objective lens directs an incident light beam to a data recording surface of an optical disc through a cover layer to form a...
7050379 Optical pickup-use object lens, optical pickup and optical disk unit  
The present invention is relative to an objective lens ( 15 ) for an optical pickup, having a numerical aperture not less than 0.8, and adapted for correcting the chromatic aberration at an image...
7031076 Objective lens, optical system and optical pickup apparatus  
An optical system for use in an optical pickup apparatus has a chromatic aberration correcting element having plural ring-shaped zones divided with a stepped section in such a way that one of the...
6999484 Parallel access data storage system using a combination of VCSEL arrays and an integrated solid immersion lens array  
A digital reading and/or writing system and method for reading and/or digital data recorded on a digital recording medium. The system includes a first array having a plurality of near-field solid...
6952390 Optical pickup apparatus, condensing optical system, and optical element  
This invention is directed to an optical pickup apparatus, condensing optical system, and optical element which can at least reproduce and/or record information from/on a first optical information...
6947368 Duel-layer optical scanner with non-periodic phase structure element of birefringent material for different wavefront aberration compensation of orthogonally polarized radiation beams  
An optical scanning device for scanning a dual-layer optical record carrier with dual orthogonally polarized radiation beams. The device having a spherical aberration compensation optical subsystem...
6927923 Objective lens, converging optical system, optical pickup apparatus and recording and/or reproducing apparatus  
An objective lens for recording and/or reproducing information of an optical information recording medium, comprises a first lens group having a positive refractive power and a second lens group...
6882614 Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses  
A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical...
6807141 Planar integrated micro-optical pickup head including two planar cylindrical collimators  
A planar integrated micro-optical pickup head is used to perform reading and writing operations on a high-density disk. The planar integrated micro-optical pickup head includes a set of optical...
6801492 Solid immersion mirror type objective lens and optical pickup device adopting the same  
A solid immersion mirror (SIM) type objective lens and an optical pickup employing the same. The objective lens has a first curved surface which condenses incident light and a second curved surface...
6801491 Focus error detecting apparatus of optical pickup with a light separating and astigmatism generation optical element and detection method thereof  
A focus error detecting apparatus and a focus error detecting method of an optical pickup in which the system is not easily influenced by track transversal noises and an optical disc thickness...
6788473 Objective lens device for correcting chromatic aberration and optical pickup employing the same  
An objective lens device and an optical pickup employing the objective lens device. The objective lens device is formed of three lenses including a lens having a negative power and formed of...
6721259 Optical head and recording/reproducing device  
An optical head comprising an objective lens having a large numerical aperture of 0.8 or more. The head further comprises a light source and an aberration-correcting lens group. To correct...
6717906 Optical disk apparatus to perform either reproduction or reproduction/recording of each of at least two kinds of optical disks having different substrate thicknesses  
To permit reproduction of a CD-R and the reproduction of a DVD in a compatible manner, both the aberration introduced by a substrate of a DVD having a 0.6 mm thickness and the aberration introduced...
6687209 Optical pickup apparatus, objective lens, apparatus for reproducing and/or recording optical information recording medium  
An optical pickup apparatus for at least two kinds of optical information recording media, comprises a first light source; a second light source; an optical converging system; and a photo detector....
6639889 Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats  
A recording/reproducing apparatus including an optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least...
6625103 Aspherical objective lens for reading information from optical disks of different thickness and manufacturing method therefor  
An aspherical objective lens and its manufacturing method are disclosed which allows for forming an optical spot with fewer side lobes on optical discs having a continuous lens plane and substrates...
6570827 OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL PICK-UP DEVICE HAVING OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL REPRODUCING DEVICE HAVING OPTICAL PICK-UP DEVICE AND OPTICAL RECORDING AND REPRODUCING DEVICE  
This invention provides an optical element for correcting a chromatic aberration corresponding to a short wavelength of a light source and further provides an optical pick-up device having the...
6556534 Objective lens and optical device  
An objective lens used in the recording of a CD or a DVD, wherein a ringed step portion is provided in a first surface of an objective lens, the step portion is provided in a first surface of an...
6542314 Objective lens for optical recording media and optical pickup apparatus using the same  
One surface of an objective lens is provided with a zonal part which acts such that the quantity of light having a wavelength of λ 1 is apparently canceled in the outer peripheral portion of the...
6496465 Monolithic CD/DVD read/write head  
A read head optical system capable of reading either CD or DVD disks is provided. A monolithic molded hollow plastic block includes three lenses integrally molded into its exterior surfaces. A 780...
6487161 Objective lens and optical head for optical disc drive  
An optical head for an optical disc drive is provided with a first laser diode that emits a shorter wavelength laser beam, a second laser diode that emits a longer wavelength laser beam, and an...
6407967 Optical apparatus, tracking apparatus and optical disk apparatus  
An optical apparatus can eliminate offset resulting from assembling errors and also can correct offset even in the photodetector of any optical system. An optical disk apparatus for reading...
6400672 Method for recording/reproducing optical information recording medium, optical pickup apparatus, objective lens and design method of objective lens  
An optical pickup apparatus includes a light source for emitting a light flux; and a converging optical system having a first, second, and third divided surface, which are divided in the order...
6370103 Objective lens for correcting chromatic aberration for use in recording to or reproducing from optical information recording medium and optical pickup apparatus therewith  
An optical pickup apparatus for reproducing information from one of different kinds of optical information recording medium, each having a transparent substrate in different thickness, or for...
6363037 Optical pickup apparatus with objective lens having a phase shift section  
In an optical pickup apparatus for reproducing information from one of different kinds of optical information recording medium, provided with a first light source; a second light source; and an...
6333907 Disk processing apparatus for reproducing information from a plurality of optical disks having different recording densities  
An optical disk apparatus comprises an optical pick-up unit for reproducing information on an optical disk, a first reproducer for processing an information signal obtained by the pick-up unit by...
Matches 1 - 50 out of 127 1 2 3 >