摘要:
A defect inspecting apparatus inspects defects of a sample having a pattern formed on the surface. The defect inspecting apparatus is provided with a stage which has a sample placed thereon and linearly moves and turns; a light source; an illuminating optical system, which selects a discretionary wavelength region from the light source and epi-illuminates the sample surface through a polarizer and an objective lens; a detecting optical system, which obtains a pupil image, by passing through reflection light applied by the illuminating optical system from the surface of the sample through the objective lens and an analyzer which satisfies the cross-nichols conditions with the polarizer; and a detecting section which detects defects of the sample by comparing the obtained pupil image with a previously stored pupil image. Conformity of the pattern on a substrate to be inspected can be judged in a short time.
摘要:
A defect inspection device and an inspection method which can decide the quality of a pattern shape of a sample surface in a short time are provided. A defect inspection device 20 that inspects a defect of a substrate (wafer 10) on which a repeated pattern is formed includes an illumination optical system 21 that has an objective lens 9 and radiates light from a light source 1 onto the repeated pattern formed on the wafer 10 via the objective lens 9, a detection optical system 22 that detects an image of a pupil plane of the objective lens 9 produced by diffracted light of a plurality of orders caused by the repeated pattern and a detection section 23 that detects a defect of the repeated pattern of the wafer 10 from the pupil image obtained.
摘要:
A defect inspecting apparatus inspects defects of a sample having a pattern formed on the surface. The defect inspecting apparatus is provided with a stage which has a sample placed thereon and linearly moves and turns; a light source; an illuminating optical system, which selects a discretionary wavelength region from the light source and epi-illuminates the sample surface through a polarizer and an objective lens; a detecting optical system, which obtains a pupil image, by passing through reflection light applied by the illuminating optical system from the surface of the sample through the objective lens and an analyzer which satisfies the cross-nichols conditions with the polarizer; and a detecting section which detects defects of the sample by comparing the obtained pupil image with a previously stored pupil image. Conformity of the pattern on a substrate to be inspected can be judged in a short time.
摘要:
A projection exposure apparatus on which are placed a reticle whose pattern is comprised of an area transmitting a radiation therethrough and an area not transmitting the radiation therethrough and a substrate includes a projection optical system for projecting the pattern formed on the reticle onto the substrate, the projection optical system being telecentric on the substrate side, a device producing a radiation beam for alignment of the reticle and the substrate, an alignment device for supplying the radiation beam onto the substrate through the reticle and the projection optical system and detecting the relative positional relation between the reticle and the substrate through the projection optical system, a device for imparting displacement to the projection optical system to the position of incidence of the radiation beam onto the projection optical system by the alignment device, a device for outputting a position signal conforming to the relative position of the optic axis of the projection optical system and the position of incidence, and a deflecting device responsive to the position signal to deflect the angle of the principal ray of the radiation beam entering the projection optical system so that the telecentricity of the projection optical system on the substrate side is maintained.
摘要:
An optical path length compensating device comprises a first objective having one focus coincident with a two-dimensional plane and provided for movement along the two-dimensional plane, a second objective having one focus coincident with a predetermined focal plane, first and second reflecting means provided in the optical path between the first objective and the second objective for movement along the optical path, the first reflecting means including at least one reflecting surface for turning the optical path from the first objective by a predetermined angle in a plane parallel to the two-dimensional plane, the second reflecting means including at least one pair of reflecting surfaces for directing the light from the first reflecting means to the second objective, means for moving the first objective and the first reflecting means in operative association with each other, and means for moving the second reflecting means so that the other focus of the first objective and the other focus of the second objective are coincident with each other.
摘要:
A defect inspection device and an inspection method which can decide the quality of a pattern shape of a sample surface in a short time are provided. A defect inspection device 20 that inspects a defect of a substrate (wafer 10) on which a repeated pattern is formed includes an illumination optical system 21 that has an objective lens 9 and radiates light from a light source 1 onto the repeated pattern formed on the wafer 10 via the objective lens 9, a detection optical system 22 that detects an image of a pupil plane of the objective lens 9 produced by diffracted light of a plurality of orders caused by the repeated pattern and a detection section 23 that detects a defect of the repeated pattern of the wafer 10 from the pupil image obtained.
摘要:
A method of manufacturing an optical member includes a crystal growing step and a carving step. The crystal growing step includes melting a mixture of fluoride powder and a scavenger at a melting temperature of a melting point for the fluoride and above, and then crystallizing the melted fluid and further cooling down an obtained fluoride crystal in a temperature range from 1000° C. to 900° C. by a temperature decreasing rate in a range from 0.1 to 5° C./hr. The carving step includes carving an optical member out of the fluoride crystal obtained in the crystal growing step such that the optical member is made of a fluoride crystal in which a maximum diameter dmax of scattering bodies existing internally and a quantity ns of the scattering bodies per 1 cm3 satisfy a condition represented by the following formula (1): 0
摘要:
A method of manufacturing an exposure apparatus includes a step of providing a projection optical system that projects a pattern image formed on a mask onto a photosensitive substrate. Additionally, a surface of a correction member having a predetermined thickness is locally tooled or processed in order to correct random aberration that remains in the projection optical system. The tooled correction member is arranged between the mask and the substrate, irrespective of the mask. Furthermore, when the projection optical system is provided, an aberration caused due to the predetermined thickness of the correction member is taken into account in advance.
摘要:
The present invention relates to an exposure apparatus using a projection optical system to realize a small size and the bitelecentricity as securing a wide exposure area and a large numerical aperture and to realize extremely good correction for aberrations, particularly for distortion. The projection optical system comprises a first lens group G.sub.1 with a positive refracting power, a second lens group G.sub.2 with a negative refracting power, a third lens group G.sub.3 with a positive refracting power, a fourth lens group G.sub.4 with a negative refracting power, a fifth lens group G.sub.5 with a positive refracting power, and a sixth lens group G.sub.6 with a positive refracting power in order from the side of the first object R, wherein the second lens group G.sub.2 comprises a front lens L.sub.2F with a negative refracting power, a rear lens L.sub.2R of a negative meniscus shape, and an intermediate lens group G.sub.2M disposed between the front lens and the rear lens, and wherein the intermediate lens group G.sub.2M has a first lens L.sub.M1 with a positive refracting power, a second lens L.sub.M2 with a negative refracting power, and a third lens L.sub.M3 with a negative refracting power in order from the side of the first object R. The system is arranged to satisfy within suitable ranges of focal lengths for the first to sixth lens groups G.sub.1 -G.sub.6, based on the above arrangement.
摘要:
An optical member of the invention is an optical member for photolithography used together with light having a wavelength of not more than 250 nm. The optical member is made of a fluoride crystal in which a maximum diameter dmax (cm) of scattering bodies existing internally and a quantity ns of the scattering bodies per 1 cm3 satisfy a condition represented by following formula (1): 0