摘要:
An exposure apparatus which includes a projection optical system that projects a pattern image of a reticle onto an object to be exposed, and an interferometer configured to measure an optical characteristic of the projection optical system. The interferometer includes a mask placed on an object plane side of the projection optical system, the mask shaping a wavefront of light from a light source into an ideal wavefront, a detector configured to detect the light passing through the projection optical system; and an optical element placed between the mask and the projection optical system or between the projection optical system and the detector. The detector detects interference fringes (an interferogram) formed by interference between a reflected component of the light reflected by the optical element and a transmitted component of the light passing through the optical element.
摘要:
An exposure apparatus which includes a projection optical system that projects a pattern image of a reticle onto an object to be exposed, and an interferometer configured to measure an optical characteristic of the projection optical system. The interferometer includes a mask placed on an object plane side of the projection optical system, the mask shaping a wavefront of light from a light source into an ideal wavefront, a detector configured to detect the light passing through the projection optical system; and an optical element placed between the mask and the projection optical system or between the projection optical system and the detector. The detector detects interference fringes (an interferogram) formed by interference between a reflected component of the light reflected by the optical element and a transmitted component of the light passing through the optical element.
摘要:
There is provided an interferometer for measuring a surface shape of an optical element using interference, including a reference wave-front deformation system for deforming a wave front of reference light.
摘要:
An exposure apparatus includes an illumination optical system for illuminating the reticle using the ultraviolet light from the light source, and a polarization measuring unit measuring the polarization state of the ultraviolet light, the polarization measuring unit including an optical unit for providing at least three different phase differences to the ultraviolet light that has passed at least part of the illumination optical system, a polarization element for providing a different transmittance in accordance with a polarization state of the ultraviolet light that has passed the optical unit, and an image pickup device for detecting a light intensity of the ultraviolet light that has passed the polarization element, the polarization measuring unit measuring the polarization state of the ultraviolet light that has passed the at least part of the illumination optical system based on a detection result of the image pickup device.
摘要:
An exposure apparatus includes an illumination optical system for illuminating the reticle using the ultraviolet light from the light source, and a polarization measuring unit measuring the polarization state of the ultraviolet light, the polarization measuring unit including an optical unit for providing at least three different phase differences to the ultraviolet light that has passed at least part of the illumination optical system, a polarization element for providing a different transmittance in accordance with a polarization state of the ultraviolet light that has passed the optical unit, and an image pickup device for detecting a light intensity of the ultraviolet light that has passed the polarization element, the polarization measuring unit measuring the polarization state of the ultraviolet light that has passed the at least part of the illumination optical system based on a detection result of the image pickup device.
摘要:
A phase measuring apparatus for measuring phase characteristics of a film applied onto an object to be measured includes a shearing interference system for providing incident light onto the object or light reflected on the object with shearing interference, a detector for detecting shearing interference information, and a computing unit for calculating the phase characteristics of the film based on the shearing interference information.
摘要:
A phase measuring apparatus for measuring phase characteristics of a film applied onto an object to be measured includes a shearing interference system for providing incident light onto the object or light reflected on the object with shearing interference, a detector for detecting shearing interference information, and a computing unit for calculating the phase characteristics of the film based on the shearing interference information.
摘要:
A phase measuring apparatus for measuring phase characteristics of a film applied onto an object to be measured includes a shearing interference system for providing incident light onto the object or light reflected on the object with shearing interference, a detector for detecting shearing interference information, and a computing unit for calculating the phase characteristics of the film based on the shearing interference information.
摘要:
An exposure apparatus that exposes a pattern of an original onto a substrate includes a condenser optical system configured to split light from a light source into plural rays, to condense the plural rays at different positions on the original, and to make a central part of each of the plural rays that illuminate the original darker than a periphery at the Fourier transform plane with respect to the original, and a projection optical system configured to project the pattern of the original onto the substrate.
摘要:
An illumination optical system for illuminating an illuminated surface using light from a light source includes a first diffraction optical element upon which the light from the light source is incident, and a second diffraction optical element upon which the light from the light source is incident, wherein the light from the first diffraction optical element forms a first part of an illumination distribution on a predetermined surface that substantially has a Fourier transform relationship with the illuminated surface, and the light from the second diffraction optical element forms a second part of the illumination distribution.