Lithographic apparatus and device manufacturing method
A uniformity controller is arranged to control a profile of a radiation intensity along the length of a target portion of a substrate so as to substantially compensate for irradiation-induced variation of the profile with respect to time. The uniformity controller includes a variable filter interpos...
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| creator | BOUMAN WILLEM JAN |
| description | A uniformity controller is arranged to control a profile of a radiation intensity along the length of a target portion of a substrate so as to substantially compensate for irradiation-induced variation of the profile with respect to time. The uniformity controller includes a variable filter interposed between the illumination system and the target portion and arranged to control the relative values of the intensity applied at a series of positions within the target portion of the substrate so as to substantially compensate for variation of the profile with respect to time. In this manner the radiation intensity is controlled at a series of positions within the target portion so as to compensate for variation of the intensity profile with time. |
| format | Patent |
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The uniformity controller includes a variable filter interposed between the illumination system and the target portion and arranged to control the relative values of the intensity applied at a series of positions within the target portion of the substrate so as to substantially compensate for variation of the profile with respect to time. 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| subjects | ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM APPARATUS SPECIALLY ADAPTED THEREFOR CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS |
| title | Lithographic apparatus and device manufacturing method |
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