Matches 1 - 10 out of 10


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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...
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...
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)...
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...
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...
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...
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)....
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...
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...
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...

Matches 1 - 10 out of 10