Patent application number | Description | Published |
20080232216 | Focus Control Scheme with Jumping Focal Point - The present invention relates to a focus control apparatus and method of controlling focus of a radiation beam onto a first spatial level of a record carrier, wherein a focus control loop is locked onto a reflection signal obtained from a second spatial level located at a predetermined distance from said first spatial level, and is then opened to move an objective means towards the second spatial level by a predetermined amount related to the predetermined distance. This stepwise procedure enlarges the margin for mechanical overshoot and hence reduces the risk of bumping into the disc. Additionally, no ambiguous focus error signals are detected and robustness of initial focusing is improved if a thin transparent cover layer is present. | 09-25-2008 |
20080278727 | Device For Imaging an Interior of a Turbid Medium - The invention relates to a device for imaging an interior of a turbid medium. Said device ( | 11-13-2008 |
20080279064 | Optical Data Storage System and Method of Optical Recording and/or Reading - An optical data storage system for recording and/or reading, using a radiation beam having a wavelength X is described. The radiation beam is focused onto a data storage layer of an optical data storage medium. The medium has a cover layer that is transparent to the focused radiation beam. The cover layer has a thickness h smaller than 5 μm. A cover layer with thickness variation of substantially less than the focal depth, i.e. 50 nm, eliminates the need of dynamic focus control of the objective which is otherwise required in addition to the gap servo. Further a method of optical recording is described using such an optical data storage system by which a static focus control and spherical aberration correction to accommodate medium-to-medium variance is achieved. The static focus control can be realised by optimising the modulation depth of a known signal, e.g. from a lead-in track. | 11-13-2008 |
20080279070 | Optical Data Storage System and Method of Optical Recording and/or Reading - An optical data storage system for recording and/or reading, using a radiation beam, having a wavelength λ, focused onto a data storage layer of an optical data storage medium is described. The system comprises the medium having a cover layer that is transparent to the focused radiation beam, an optical head, including an objective having a numerical aperture NA, said objective including a solid immersion lens that is adapted for being present at a free working distance of smaller than λ/10 from an outermost surface of said medium. The optical head comprises a first adjustable optical element corresponding to the solid immersion lens, means for axially moving the first optical element and dynamically keeping constant the distance between cover layer and solid immersion tens, a second adjustable optical element, means for dynamically adjusting the second optical element for changing the focal position of the focal point of the focused radiation beam relative to an exit surface of the solid immersion lens. This achieves reliable read-out and writing during cover layer thickness variations. Further a method is described for controlling such a system. | 11-13-2008 |
20080285823 | Device for Imaging an Interior of a Turbid Medium - The invention relates to a device ( | 11-20-2008 |
20080290256 | Method and Device for Imaging an Interior of a Turbid Medium - The invention relates to a method and device ( | 11-27-2008 |
20080300472 | Method and Device for Optical Imaging of a Turbid Medium - Disclosed is a method and a device for optical imaging of a turbid medium. This method comprises a reference measurement of reference intensities of light emanating from the turbid medium at a reference blood oxygen saturation (SaO2) in the turbid medium and a reference imaging step for reconstructing a reference image of the turbid medium from the measured reference intensities. Furthermore the method comprises a contrast measurement of the contrast intensity of the light emanating from the turbid medium at a contrast blood oxygen saturation (SaO2) level in the turbid medium and a contrast imaging step for reconstructing a contrast image of the turbid medium from the measured contrast intensities. A comparison is made between the contrast image to the reference image of the turbid medium. | 12-04-2008 |
20080309940 | Method of, System For, and Medical Image Acquisition System For Imaging an Interior of a Turbid Medium Taking Into Account the Geometry of the Turbid Medium - The invention relates to a method of imaging an interior of a turbid medium ( | 12-18-2008 |
20080309941 | Method of, System for, and Medical Image Acquisition System for Imaging an Interior of a Turbid Medium Taking Into Account the Geometry of the Turbid Medium - The invention relates to a method of imaging an interior of a turbid medium ( | 12-18-2008 |
20090190461 | OPTICAL DATA STORAGE SYSTEM FOR RECORDING AND/OR READING AN OPTICAL DATA STORAGE MEDIUM FOR USE IN SUCH SYSTEM - Multi layer near-field optical recording using a moderate numerical aperture (NA) is superior to the high-NA (NA=2.0) first-surface single-layer technique. The use of very flat and thin spacer layers limits spherical aberration due to difference in layer depth. The thin spacer layers may have a high refractive index because their thickness allow for a relatively high absorption constant. This makes possible in principle an m-layer system, e.g. m=4, with NA=1.6 which may include a flat, protective cover layer. Further a medium for use in such a system is described. | 07-30-2009 |
20090231587 | DEVICE FOR IMAGING AN INTERIOR OF A TURBID MEDIUM - The invention relates to a device ( | 09-17-2009 |
20090259130 | OPTICAL TOMOGRAPHY MEASUREMENT USING AN ADAPTED BRIM FOR THE RECEIVING VOLUME - The invention relates to a device for imaging an interior of a turbid medium comprising: a) a receiving volume for receiving at least a part of the turbid medium, with the receiving volume being bound by a boundary having an opening bound by a brim, b) a light source for irradiating the turbid medium, and c) a photodetector unit for detecting light emanating from the volume as a result of irradiating the turbid medium. The device is adapted such that the brim is arranged for optically coupling the light source to the turbid medium and the turbid medium to the photodetector unit. One embodiment of the invention relates to a device for imaging an interior of a female breast comprising a cup-like receptacle ( | 10-15-2009 |
20090264772 | FASH FLUORESCENCE IMAGING DEVICE FOR DIFFUSE OPTICAL TOMOGRAPHY - A device for imaging an interior of a turbid medium arranged to couple excitation light from a light source ( | 10-22-2009 |
20100002233 | IMAGING OF TURBID MEDIUM - The invention relates to imaging of a turbid medium, for example in connection with optical mammography. A device for imaging a turbid medium ( | 01-07-2010 |
20100027018 | DEVICE AND METHOD FOR ACQUIRING IMAGE DATA FROM A TURBID MEDIUM - The invention relates to a method of acquiring image data from a turbid medium ( | 02-04-2010 |
20100030067 | SYSTEM, METHOD, COMPUTER-READABLE MEDIUM AND USE FOR IMAGING OF TISSUE IN AN ANATOMICAL STRUCTURE - A system for imaging of prostate cancer in a prostate in vivo is provided. The system utilizes Diffuse Optical Tomography (DOT) for creating a 3D image for the detection of suspicious prostate tissue. The DOT image may be used to guide the biopsy, thereby reducing the number of false negatives. A method, computer-readable medium and use are also provided. | 02-04-2010 |
20100030084 | DIFFUSE OPTICAL TOMOGRAPHY WITH MARKERS CONTAINING FLUORESCENT MATERIAL - The invention relates to a system, a medical image acquisition system, and a method for imaging an interior of a turbid medium ( | 02-04-2010 |
20100056916 | SYSTEM, DEVICE, METHOD, COMPUTER-READABLE MEDIUM, AND USE FOR IN VIVO IMAGING OF TISSUE IN AN ANATOMICAL STRUCTURE - A system is provided that may be used for locating and diagnosing lesions in the human body in vivo. In some embodiments, once the exact position of a lesion is found, a biopsy may be taken from the lesion using e.g. ultra sound techniques for guidance of the biopsy needle. Use of the system drastically reduces the negative biopsy samples compared to currently used “blind sampling” techniques. This reduces patient discomfort and minimizes infections as the number of biopsy samples is reduced. A method and computer-readable medium is also provided. | 03-04-2010 |
20100238441 | DEVICE FOR IMAGING THE INTERIOR OF AN OPTICALLY TURBID MEDIUM AND RECEPTACLE UNIT FOR SUCH A DEVICE | 09-23-2010 |
20100258741 | METHOD AND DEVICE FOR IMAGING AN INTERIOR OF AN OPTICALLY TURBID MEDIUM - The invention relates to a method and a device ( | 10-14-2010 |
20100262018 | METHOD OF CONTROLLING A DEVICE FOR IMAGING THE INTERIOR OF TURBID MEDIA, DEVICE FOR IMAGING THE INTERIOR OF TURBID MEDIA AND COMPUTER PROGRAM PRODUCT - A method of controlling a device for imaging the interior of turbid media is provided. The device comprises: a receiving portion ( | 10-14-2010 |
20110090499 | METHOD AND DEVICE FOR OPTICALLY EXAMINING THE INTERIOR OF TURBID MEDIA - A method for optically examining the interior of turbid media is provided. The method comprises the steps: providing broad-band light ( | 04-21-2011 |
20110270093 | OPTICAL EXAMINATION DEVICE ADAPTED TO BE AT LEAST PARTIALLY INSERTED INTO A TURBID MEDIUM - An optical examination device ( | 11-03-2011 |