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US20060067204 |
Objective lens and scanning device using such an objective lens
The invention relates to an objective lens and an optical device for scanning different information carriers having different cover layer thicknesses, with different numerical apertures. The... |
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US20090135712 |
SOLID IMMERSION LENS AND FOCUSING LENS, OPTICAL PICKUP DEVICE, AND DATA RECORDING/REPRODUCING APPARATUS USING THE SAME
A solid immersion lens (SIL) is provided. The SIL includes a spherical part, a cone-shaped part, a tip part, and an edge part between the cone-shaped part and the tip part. The edge part includes... |
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US20050249108 |
Record carrier with multiple coupling elements
The invention relates to a record carrier (1) like a CD-RW+ or a DVD supporting an improved handling and, in particular, an improved access control to information stored on the record carrier (1)... |
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US20060164967 |
Objective lens and optical pickup device
An objective lens is used for an optical pickup device that conducts reproducing of information by using a light flux with wavelength λ1 (370 nm≦λ1≦440) for the first optical disc having... |
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US20130114389 |
NEAR-FIELD OPTICAL HEAD AND METHOD FOR MANUFACTURING SAME
A near-field optical head which can be manufactured using a silicon process and illuminate and detect sufficient light from a very small aperture at all times in a state of stably proximate to a... |
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US20070140099 |
Read-only magnetic memory device mrom
A storage device has an information carrier part (10) and a read-out part (30). The information carrier part (10) is provided with a pattern of an electro-magnetic material constituting an array... |
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US20050243707 |
Optical recording and reading system, optical data storage medium and use of such medium
An optical recording and reading system for use with an optical data storage medium (5) is described. The system comprises the medium (5) having a recording stack (9), formed on a substrate (8).... |
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US20120092973 |
LIGHT SPOT FORMING ELEMENT, OPTICAL RECORDING HEAD, AND OPTICAL RECORDING DEVICE
Disclosed is a light spot forming element which is capable of forming a minute stabilized light spot efficiently and is easy to handle. For this purpose, there is provided a light spot forming... |
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US20120069721 |
RECORDING HEAD AND RECORDER
A recorder has a recording medium for information recording, a light source, an optical system, a slider, and an optical waveguide. To the optical system, light from the light source enters, and... |
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US20120147729 |
PORTABLE ELECTRONIC DEVICE WITH DISC DRIVE
A portable electronic device includes a first main body and a disc drive. The disc drive is received in the first main body. The disc drive includes a second main body, a driving element, and a... |