Patent application number | Description | Published |
20130077072 | LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD - A lithographic apparatus includes a support constructed to support a patterning device, the patterning device being capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam; a substrate table constructed to hold a substrate; a projection system configured to project the patterned radiation beam onto a target portion of the substrate, and a measurement system with a measurement radiation system to provide a measurement beam of radiation, at least two reflectors to reflect a portion of the measurement beam between the reflectors; and a detector to detect a wavelength of at least a portion of the measurement beam transmitted through one of the reflectors. | 03-28-2013 |
20130162963 | Lithographic Apparatus With a Deformation Sensor - Disclosed is a lithographic apparatus comprising a member susceptible to deformation and a deformation sensor for measuring a deformation of said member. The deformation sensor comprises a first birefringence sensing element arranged to be subjected to stress in dependency of the deformation of said member and a light system configured to transmit polarized light through the first birefringence sensing element, wherein said polarized light has a first polarization state prior to being transmitted through the first birefringence sensing element. The deformation sensor further comprises a detector for detecting a second polarization state of the polarized light after being transmitted through the first birefringence sensing element and a calculation unit to determine the deformation of said member based on the first and second polarization state. | 06-27-2013 |
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