摘要:
According to one exemplary embodiment, a projection lens having an object plane and an image plane is provided and includes the following lens groups listed objectwise to imagewise: (1) a first lens group having negative refractive power; and (2) at least three other lens groups having a positive refractive power and at least one other lens group having a negative refractive power. In one embodiment, the projections lens includes a second lens group having a positive refractive power; a third lens group having a negative refractive power; and fourth, fifth and sixth lens groups having overall positive refractive power. The projection lens having a numerical aperture of at least about 0.85 and is of a 1½ waist construction, with the ½ waist defined in the first lens group and a primary waist is defined in the third lens group.
摘要:
A projection optical system includes a plurality of positive lens groups having a positive refractive power, and at least one negative lens group having a negative refractive power, wherein, when L is a conjugate distance of the projection optical system and φ0 is the sum of powers of the or each negative lens group, a relation |L×φ0|>17 is satisfied, wherein, when h is a height of an axial marginal light ray and hb is a height of a most abaxial chief ray, at least two aspherical surfaces are formed on surfaces which satisfy a relation |hb/h|>0.35, wherein, when ΔASPH is an aspherical amount of each aspherical surface, a relation |ΔASPH/L|>1.0×10−6 is satisfied, and wherein the at least two aspherical surfaces include regions in which, from a central portion toward a peripheral portion of the surface, their local curvature powers change with mutually opposite signs.
摘要翻译:投影光学系统包括具有正折光力的多个正透镜组和具有负屈光力的至少一个负透镜组,其中,当L是投影光学系统的共轭距离时,phi0是功率之和 或负的每个负透镜组,满足关系| Lxphi0 | 17,其中,当h是轴向边缘光线的高度,hb是最下面的主光线的高度时,形成至少两个非球面 在满足关系| hb / h |> 0.35的表面上,其中,当DeltaASPH是每个非球面的非球面量时,满足关系|ΔASPH/ L |> 1.0×10 -6,并且其中,所述至少两个 非球面包括从表面的中心部分朝向周边部分的局部曲率功率以相反的符号变化的区域。
摘要:
A projection optical system according to the present invention whose image side numerical aperture is greater than or equal to 0.75, and which forms an image of a first object upon a second object using light of a predetermined wavelength less than or equal to 300 nm, comprises: a first lens group G1 of positive refractive power; a second lens group G2 of negative refractive power; a third lens group G3 of positive refractive power; and a fourth lens group G4 of positive refractive power, and: the first lens group G1, the second lens group G2, the third lens group G3 and the fourth lens group G4 are arranged in order from a side of the first object; and a distance D in mm along an optical axis between an optical surface of the fourth lens group G4 closest to the second object, and the second object, satisfies a condition of 0.1
摘要:
A projection optical system according to the present invention whose image side numerical aperture is greater than or equal to 0.75, and which forms an image of a first object upon a second object using light of a predetermined wavelength less than or equal to 300 nm, comprises: a first lens group G1 of positive refractive power; a second lens group G2 of negative refractive power; a third lens group G3 of positive refractive power; and a fourth lens group G4 of positive refractive power, and: the first lens group G1, the second lens group G2, the third lens group G3 and the fourth lens group G4 are arranged in order from a side of the first object; and a distance D in mm along an optical axis between an optical surface of the fourth lens group G4 closest to the second object, and the second object, satisfies a condition of 0.1
摘要:
A high performance objective having very small central obscuration, an external pupil for apertureing and Fourier filtering, loose manufacturing tolerances, large numerical aperture, long working distance, and a large field of view is presented. The objective is preferably telecentric. The design is ideally suited for both broad-band bright-field and laser dark field imaging and inspection at wavelengths in the UV to VUV spectral range.
摘要:
A polarization rotator and crystalline quartz plate for use with an optical imaging system. The system has several imaging optical components (L1-L16) sequentially arranged along an optical axis (16), a means for creating radially polarized light arranged at a given location in that region extending up to the last of said imaging optical components, and a crystalline-quartz plate employable in such a system. A polarization rotator (14) for rotating the planes of polarization of radially polarized light and transforming same into tangentially polarized light, particularly in the form of a crystalline-quartz plate as noted above, is provided at a given location within a region commencing where those imaging optical components that follow said means for creating radially polarized light in the optical train are arranged. The optical imaging system is particularly advantageous when embodied as a microlithographic projection exposure system.
摘要:
An objective (1), in particular for a microlithography projection apparatus, has lenses or lens parts falling into at least two groups. The first group (3) is made of a first crystalline material and the second group (5) is made of a second crystalline material. In the first group (3), an outermost aperture ray (15) is subject to a first optical path difference between two mutually orthogonal states of linear polarization; and the same outermost aperture ray is subject to a second optical path difference in the second group (5). The two different crystalline materials are selected so that the first and second optical path difference approximately compensate each other. A suitable selection consists of calcium fluoride for the first and barium fluoride for the second crystalline material.
摘要:
An optical imaging system having several imaging optical components (L1-L16) sequentially arranged along an optical axis (16), a means for creating radially polarized light arranged at a given location in that region extending up to the last of said imaging optical components, and a crystalline-quartz plate employable in such a system. A polarization rotator (14) for rotating the planes of polarization of radially polarized light and transforming same into tangentially polarized light, particularly in the form of a crystalline-quartz plate as noted above, is provided at a given location within a region commencing where those imaging optical components that follow said means for creating radially polarized light in the optical train are arranged. The optical imaging system is particularly advantageous when embodied as a microlithographic projection exposure system.
摘要:
In a projection optical system which forms an image of a first plane on a second plane, using extreme ultraviolet illumination light, an object of the invention is to form an image on the first plane on the second plane under suitable conditions. This projection optical system comprises a first diffractive optical element arranged in an optical path between the first plane and the second plane; a second diffractive optical element arranged in the optical path on the side of the second plane from the first diffractive optical element; and an optical system having a negative power, arranged in the optical path between the first diffractive optical element and the second diffractive optical element.
摘要:
A projection optical system transferring a mask image on a mask onto a substrate and correcting chromatic aberration. A projection exposure system includes at least two refractive optical members collectively containing at least a first fluoride substance and a second fluoride substance, and satisfying the design condition 0.4