摘要:
Embodiments of the present invention are directed to methods and systems for micromachining a conical surface. In one embodiment, such a system may include a rotating platform for receiving a long line of laser illumination, a mask having a predetermined pattern comprising a sector of a planar ring, the mask being positioned on the rotating platform, a workpiece stage having a rotational axis for rotating a removably-affixed workpiece comprising a conical surface, wherein the sector comprises the planar image of the conical surface, an excimer laser for producing a laser beam, a homogenizer for homogenizing the laser beam in at least a single direction, at least one condenser lens, a turning mirror and at least one projection lens.
摘要:
Apparatus and method for producing optically variable devices, optically variable media, dot matrix holograms or embossing substrates. The system includes: a laser beam generator, a laser beam shaper, a spatial light modulator, imaging optics and an image positioner. The laser beam generator generates a laser beam, which is shaped by the laser beam shaper to modify the laser beam to an optimized beam profile. The shaped laser beam is modulated by the spatial light modulator, which generates, at a place removed from the substrate surface, an optical pattern. The imaging optics causes the optical pattern to be imaged on the substrate surface. An image positioner allows for the optical pattern to be positioned to different areas of the substrate surface. The system can produce adapted optically variable devices, optically variable media, dot matrix holograms or embossing substrates
摘要:
Embodiments of the present invention are directed to an illuminating optical device for forming a field of illumination. The optical device includes a first one-dimensional homogenizer positioned to homogenize a first dimension/axis of the field of illumination and a second one-dimensional homogenizer positioned to homogenize a second dimension/axis of the field of illumination.
摘要:
Embodiments of the present invention are directed to methods and systems for laser micro-machining, which may include dividing a long line illumination field into a plurality of individual fields, wherein each of the plurality of fields includes an aspect ratio of about 4:1 or greater, directing the plurality of individual fields onto at least one mask, wherein each individual field illuminates a corresponding area on the mask and translating the mask and/or workpiece relative to one another along a scan axis.
摘要:
One exemplary embodiment can be a process for treating a tail gas stream from a sulfur recovery zone. Generally, the process includes passing the tail gas stream through, in sequence, a hydrogenation zone, a quench zone, and an acid gas removal zone using a solvent. The solvent can include at least one of a dimethyl ether of polyethylene glycol, a N-methyl pyrrolidone, a N-formyl morpholine, a N-acetyl morpholine, a tetrahydro-1,4-oxazine, and a mixture comprising diisopropanolamine and tetrahydrothiophene-1,1-dioxide.
摘要:
In some embodiments, a method of allowing navigation of a plurality of data elements residing within a category-tree database includes providing, on a single primary “web” page, a distinct data element symbol for each data element and a distinct parent category symbol for each parent category in the category paths of the data elements. For each illustrated parent category, a distinct first level web page is provided that includes (i) a first level subcategory symbol for each first level subcategory in the category paths of the data element(s) associated with that parent category and (ii) the data element symbol for each such data element shown associated with its respective first level subcategory symbol.
摘要:
A system for correcting eccentricity and rotational error of a substantially circular workpiece, in which the workpiece is moved to a workstation, using a translating device. The rotational position and position of the workpiece center is determined. There is a rotatable member at the workstation, having a home position and a center. The rotatable member is pre-rotated from its home position an amount sufficient to correct workpiece rotational error. The translating device is caused to place the workpiece on the rotatable member such that the workpiece center is at a known position relative to the center of the rotatable member, to correct eccentricity. The rotatable member is then rotated back to its home position, to correct rotational error.
摘要:
In some embodiments, a computer-implemented method for indicating a status change associated with at least one data element among a plurality of data elements represented on at least one web page, the plurality of data elements resulting from a search of at least one database, includes displaying a separate image for each data element and displaying the plurality of images in distinct groups based upon the commonality of at least one characteristic of each data element included in each respective group. After the occurrence of a change of status of at least one among a data element and the image corresponding to said data element, at least one among at least one visible and at least one audible signal is provided to indicate said change of status has occurred.
摘要:
In one aspect, the present invention provides an imager, preferably portable, that includes a source of electromagnetic radiation capable of generating radiation with one or more frequencies in a range of about 1 GHz to about 2000 GHz. An optical system that is optically coupled to the source focuses radiation received therefrom onto an object plane, and directs at least a portion of the focused radiation propagating back from the object plane onto an image plane. The imager further includes a scan mechanism coupled to the optical system for controlling thereof so as to move the focused radiation over the object plane. A detector optically coupled to the lens at the image plane detects at least a portion of the radiation propagating back from a plurality of scanned locations in the object plane, thereby generating a detection signal. A processor that is in communication with the detector generates an image of at least a portion of the object plane based on the detection signal.
摘要:
In some embodiments, a method for providing a graphical user interface for displaying search results includes displaying a graphical representation of search results and parent categories for such search results, wherein individually graphically displayed search results appear within their respective parent categories, each search result representing an item of merchandise and each parent category relating to the type of merchandise included within such parent category.