Source: https://patents.google.com/patent/US7499145B2/en
Timestamp: 2020-05-30 19:03:46
Document Index: 379233978

Matched Legal Cases: ['Application No. 2002', 'art 103', 'art 104', 'art 103', 'art 104', 'art 103', 'art 104', 'art 104', 'art 104', 'art 301', 'art 104', 'art 301', 'art 104', 'art 301', 'art 301']

US7499145B2 - Illumination optical system and exposure apparatus having the same - Google Patents
US7499145B2
US7499145B2 US10/959,350 US95935004A US7499145B2 US 7499145 B2 US7499145 B2 US 7499145B2 US 95935004 A US95935004 A US 95935004A US 7499145 B2 US7499145 B2 US 7499145B2
US10/959,350
US20050094997A1 (en
2003-10-10 Priority to JP2003351980A priority Critical patent/JP3977311B2/en
2003-10-10 Priority to JP2003-351980 priority
2004-10-06 Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ORINO, KANJO
2005-05-05 Publication of US20050094997A1 publication Critical patent/US20050094997A1/en
2009-03-03 Publication of US7499145B2 publication Critical patent/US7499145B2/en
238000005286 illumination Methods 0 title claims abstract description 113
An illumination optical system for illuminating an object surface using light from a light source, the illumination optical system includes, a first optical system that includes a movable unit that is movable along an optical axis, said first optical system guiding the light to the object surface and varying an irradiation area on a certain plane, and a second optical system that can be located on and removed from an optical path of said first optical system, the second optical system varies, when located on the optical path of said first optical system, the irradiation area on the certain plane in cooperation with said first optical system, while maintaining a shape of a light intensity distribution on the certain plane, relative to the irradiation area irradiated only by said first optical system.
The present invention relates generally to an illumination optical system, and more particularly to an illumination optical system for illuminating a reticle (or a mask) which forms a pattern, in an exposure apparatus used in a photolithography process for fabricating semiconductor devices, liquid crystal display devices, image pick-up devices (CCD, and the like), thin-film magnetic heads, and the like.
The improved resolution of the exposure apparatus generally requires optimizations of both the numerical aperture (“NA”) of the projection optical system and the NA of the illumination optical system. Concretely, the illumination optical system optimizes the resolution and the contrast for a certain circuit pattern by adjusting a value of the coherence factor σ that corresponds to a ratio between the NA of the projection optical system and the NA of the illumination optical system. For example, an illumination optical system proposed in Japanese Laid-Open Patent Application No. 2002-217085 (corresponding to published U.S. Application Ser. No. 2002/109108) typically has a σ consecutively variable optical system that can continuously change a σ value.
The σ variable optical system 1000 can continuously change a size of an irradiated area (illumination area) L or a value of a by moving the concave lens 1210 in the second lens unit 1200 in the direction of arrow A along the optical axis, and by moving the convex lenses 1310 and 1320 as one member in the third lens unit 1300 in the direction of arrow B along the optical axis. FIG. 20A shows the minimum σ state that minimizes the irradiated area L, FIG. 20B shows the maximum σ state that maximizes the irradiated area L, and FIG. 20C shows the intermediate state in which the irradiated area L is between the minimum σ state and the maximum σ state.
Accordingly, it is an exemplary object of the present invention to provide an illumination optical system and an exposure apparatus having the same that prevent the reduced throughput due to the deteriorated light intensity, expand the zooming range, and provide the high-quality exposure.
FIG. 3 is an optical path that shows a minimum σ state, a intermediate a state and a maximum σ state in the σ variable optical system shown in FIG. 2.
A σ variable optical system of an illumination optical system of the present invention should meet three conditions on an exit side of the σ variable optical system, i.e., a zooming operation that changes an irradiated area, an immobility at the back focus position, and a telecentricity of the exit light, in order to provide an illumination optical system and an exposure apparatus having the same for preventing the lowered throughput due to the light intensity deterioration, and for expanding a zooming range to provide the high-quality exposure. In general, at least three movable units are needed to satisfy these three conditions.
The first optical system 210 of the instant embodiment for varying the σ value includes, in order from the exit side of the first plural-light-source forming part 103, an aperture stop 211, a parallel plate 212 that can be inserted into and removed from the optical path to change the light intensity distribution of the irradiated area, a first fixed unit 213 of a positive power, a first movable unit 214 of a negative power, a second movable unit 215 of a positive power, and a second fixed unit 216 of a positive power. The first fixed unit 213 includes a convex lens 213 a and 213 b. The first movable unit 214 includes a concave lens 214 a. The second movable unit 215 includes convex lenses 215 a and 215 b. The second fixed unit 216 includes a concave lens 216 a and a convex lens 216 b.
In an attempt to enlarge the irradiated area from a small σ side to a large σ side, the first movable unit 214 is moved toward the second plural-light-source forming part 104 (the object surface side) along an optical axis OP to exhibit the zooming operation, and the second movable unit 215 is moved toward the first plural-light-source forming part 103 (the light source side) along the optical axis OP. This configuration substantially maintains constant a back focus position of the σ variable optical system, when the first optical system 210 condenses, at the side of the second plural-light-source forming part 104, the exit light from the light source as an exit edge of the first plural-light-source forming part 103.
The telecentricity or the parallelism to the optical axis OP of a principal ray incident upon the second plural-light-source forming part 104 can be substantially maintained by arranging an a focal optical system that includes, in order from the incident side, the concave lens 216 a and the convex lens 216 b, as the second fixed unit 216.
The lens unit of a negative power on an incident side that includes the second fixed unit 216 preferably includes the concave lens 216 a that is curved more strongly on the incident-side surface than the exit-side surface and has a concave surface on the incident side, in order to maintain the uniformity of the irradiation light incident upon the second plural-light-source forming part 104, to restrain the distortion, especially to restrain the variable amount of the distortion in the zooming range of the large σ side.
TABLE 1 SPECIFICATION OF THE FIRST OPTICAL SYSTEM λ = 0.248 μm, APERTURE-STOP DIAMETER = 10 mm, INCIDENT NA = 0.1 r d n k 1: APERTURE 17.3 1 STOP 2: ∞ 59.8 1.508456 212 3: ∞ 20.3 1 4: ∞ 21.1 1.508456 213a 5: −51.67880 0.5 6: 67.93790 18.4 1.508456 213b 7: ∞ d 7: VARIABLE 1 8: −40.08378 4.5 1.508456 214a 9: 64.15514 d 9: VARIABLE 1 10: ∞ 27.0 1.508456 215a 11: −78.73668 0.5 1 12: 73.17649 19.3 1.508456 215b 13: 147.70793 d 13: VARIABLE 1 14: −59.72408 5.8 1.508456 216a 15: −703.48443 207.0 1 16: 187.48807 26.4 1.508456 216b 17: ∞ 67.0 1 EVALUATION PLANE: ∞ FOCAL LENGTH AND THE VARIABLE INTERVAL OF EACH STATE P1 P2 P3 F 1 12292.2 454.6 159.4 d 7 27.0 33.2 48.0 d 9 118.1 70.4 18.3 d 13 54.5 96.0 133.3 S 1 26.0 43.8 94.0 FOCAL LENGTHS BETWEEN UNITS f1 = +57.85 mm f2 = −47.90 mm f3 = +94.86 mm RE-CONDENSING POSITION (DISTANCE FROM THE NINTH PLANE) H 1 = 60.29 mm H 2 = 35.25 mm H 3 = 5.22 mm
FIG. 4 is an aberrational diagram of the first optical system 210 shown in FIG. 3 in the minimum a state P1. More specifically, FIG. 4A is a lateral aberration diagram in the meridional direction of the first optical system 210 in the minimum σ state P1. FIG. 4B is a lateral aberration diagram in the sagittal direction. FIG. 4C is a distortion diagram. FIG. 5 is an aberrational diagram of the first optical system 210 shown in FIG. 3 in the maximum σ state P3. More specifically, FIG. 5A is a lateral aberration diagram in the meridional direction of the first optical system 210 in the maximum σ state P3. FIG. 5B is a lateral aberration diagram in the sagittal direction. FIG. 5C is a distortion diagram. FIGS. 4 and 5 show the lateral aberration that has reduced to a permissible range and properly corrected distortion.
TABLE 2 SPECIFICATION OF THE FIRST OPTICAL SYSTEM AND THE SECOND OPTICAL SYSTEM λ = 0.248 μm, APERTURE-STOP DIAMETER = 10 mm, INCIDENT NA = 0.1 r d n k 1: APERTURE 12.0 1 STOP 2: −43.75328 9.5 1.508456 222 3: −24.27205 14.0 1 4: ∞ 32.0 1.508456 224 5: 236.4047 29.9 1 6: ∞ 21.1 1.508456 213a 7: −51.67880 0.5 1 8: 67.93790 19.1 1.508456 213b 9: ∞ d 9: VARIABLE 1 10: −40.08378 4.0 1.508456 214a 11: 64.15514 d 11: VARIABLE 1 12: ∞ 27.0 1.508456 215a 13: −78.73668 0.5 1 14: 73.17649 19.3 1.508456 215b 15: 147.70793 d 15: VARIABLE 1 16: −59.72408 5.8 1.508456 216a 17: −703.48443 207.0 1 18: 187.48807 26.4 1.508456 216b 19: ∞ 67.0 1 EVALUATION PLANE: ∞ FOCAL LENGTH AND THE VARIABLE INTERVAL OF EACH STATE P1 P2 P3 F 12 −281.8 2386.7 153.5 d 9 27.0 33.2 48.0 d 11 18.1 70.4 18.3 d 15 54.5 96.0 133.3 S 2 30.8 50.3 112.2 S 2/S 1 1.18 1.15 1.19 FOCAL LENGTHS BETWEEN UNITS f1 = +57.85 mm f2 = −47.90 mm f3 = +94.86 mm THE SECOND OPTICAL SYSTEM FOCAL LENGTH F 2 = +106.67 mm RE-CONDENSING POSITION (DISTANCE FROM THE NINTH PLANE): H = 21.1 mm (ALL POSITION)
In Table 2, P1, P2 and P3 are, as shown in FIG. 6, the a variable optical system 200 (or the synthetic optical system of the first and second optical systems 210 and 220) in the minimum σ state with the smallest irradiated area L, the σ variable optical system 200 in the intermediate σ state in which the irradiated area L is between the minimum σ state and the maximum σ state, and the σ variable optical system 200 in the maximum σ state with the largest irradiated area L. F2 is a focal length of the second optical system 220. F12 is a focal length in each of the states P1 to P3 in the synthetic optical system of the first and second optical systems 210 and 220. f1 is a focal length of the first fixation optical system 213 in the first optical system 210. f2 is a focal length of the first movable unit 214 in the first optical system 210. f3 is a focal length of the second movable unit 215 in the first optical system 210.
The first fixed unit 313 includes convex lenses 313 a and 313 b. The second fixed unit 314 includes convex lenses 314 a and 314 b. The first movable unit 315 includes a concave lens 315 a. The second movable unit 316 includes convex lenses 316 a and 316 b. The third fixed unit 317 includes a concave lens 317 a and a convex lens 317 b.
In an attempt to enlarge the irradiated area from a small σ side to a large σ side, the first movable unit 313 is moved toward the second plural-light-source forming part 104 along the optical axis OP and to exhibit the zooming function, and the second movable unit 316 is moved toward the first plural-light-source forming part 301 along the optical axis OP. This configuration substantially maintains a back focus position within a substantially permissible range, when the first optical system 210 condenses, at the side of the second plural-light-source forming part 104, the parallel light incident upon the aperture stop 311 that is located at the exit edge of the first plural-light-source forming part 301.
The telecentricity of the ray incident upon the second plural-light-source forming part 104 is maintained within a substantially permissible range by arranging an afocal optical system that includes, in order from the incident side, the concave lens 317 a and the convex lens 317 b, as the third fixed unit 317.
Table 3 shows the specification of the first optical system 310 of the instant embodiment. In Table 3, P1, P2 and P3 indicate, as shown in FIG. 10, the σ variable optical system 300 in the minimum σ state with the smallest irradiated area L, the σ variable optical system 300 in the intermediate σ state in which the irradiated area L is between the minimum σ state and the maximum σ state, and the σ variable optical system 300 in the maximum σ state with the largest irradiated area L. F1 is a focal length in each of the states P1 to P3 in the first optical system 310. f1 is a focal length of the first fixed unit 313 in the first optical system 310. f2 is a focal length of the second fixed unit 314 in the first optical system 310. f3 is a focal length of the first movable unit 315 in the first optical system 310. f4 is a focal length of the second movable unit 316 in the first optical system 310. Here, FIG. 10 is an optical-path diagram that shows the maximum σ state, the intermediate a state, and the maximum σ state of the σ variable optical system 300 shown in FIG. 9.
TABLE 3 SPECIFICATION OF THE FIRST OPTICAL SYSTEM λ = 0.193 μm, APERTURE-STOP DIAMETER = 12 mm, THE MAXIMUM ANGLE OF THE INCIDENT BEAM TO THE APERTURE STOP (HALF ANGLE) = 5.7° r d n k 1: APERTURE 15.1 1 STOP 2: 174.61808 22.0 1.504132 313a 3: −49.88733 0.5 1 4: 82.47264 14.0 1.501432 313b 5: −144.28045 106.9 1 6: 113.20000 36.0 1.501432 314a 7: −70.00000 1.0 1 8: 70.00000 30.0 1.501432 314b 9: −6789.50000 d 9: VARIABLE 1 10: −49.56023 4.5 1.501432 315a 11: 51.02448 d 11: VARIABLE 1 12: 146.36947 42.0 1.501432 316a 13: −115.11405 0.5 1 14: 76.07736 20.0 1.501432 316b 15: 114.68230 d 15: VARIABLE 1 16: −58.38708 6.0 1.501432 317a 17: −450.67883 207.0 1 18: 194.39885 30.7 1.501432 317b 19: ∞ 69.5 1 EVALUATION PLANE: ∞ FOCAL LENGTH AND THE VARIABLE INTERVAL OF EACH STATE P1 P2 P3 F 1 −169.2 −316.0 −542.7 d 9 28.0 34.4 41.8 d 11 106.5 57.0 30.0 d 15 54.2 97.3 116.9 S 1 33.0 58.2 84.6 FOCAL LENGTHS BETWEEN UNITS f1 = +47.62 mm f2 = +58.15 mm f3 = −49.40 mm f4 = +98.65 mm RE-CONDENSING POSITION (DISTANCE FROM THE ELEVENTH PLANE) H 1 = 41.0 mm H 2 = 23.2 mm H 3 = 9.6 mm
H1, H2 and H3 are distances between the re-condensing position ACP at which the illuminating light from the condensed light as a light source just behind the first plural-light-source forming part 301 enters the first optical system 310 and re-condenses, and an eleventh surface as an exit-side surface of the concave lens 315 a.
r is a radius of curvature (unit: mm) in each plane. d is a plane interval (unit: mm). n is a refractive index of a medium to the incidence light (with a wavelength of 0.248 μm). k corresponds to the lens number of the first optical system 310 shown in FIG. 9.
TABLE 4 SPECIFICATION OF THE FIRST OPTICAL SYSTEM AND THE SECOND OPTICAL SYSTEM λ = 0.193 μm, APERTURE-STOP DIAMETER = 12 mm, THE MAXIMUM ANGLE OF THE INCIDENT BEAM TO THE APERTURE STOP (HALF ANGLE) = 5.7° r d n k 1: APERTURE 15.1 1 STOP 2: 174.61808 22.0 1.504132 313a 3: −49.88733 0.5 1 4: 82.47264 14.0 1.501432 313b 5: −144.28045 12.9 1 6: −70.00000 5.0 1.501432 322 7: ∞ 31.0 1 8: ∞ 24.0 1.501432 324 9: −35.00000 34.0 1 10: 113.20000 36.0 1.501432 314a 11: −70.00000 1.0 1 12: 70.00000 30.0 1.501432 314b 13: −6789.50000 d 13: VARIABLE 1 14: −49.56023 4.5 1.501432 315a 15: 51.02448 d 15: VARIABLE 1 16: 146.36947 42.0 1.501432 316a 17: −115.11405 0.5 1 18: 76.07736 20.0 1.501432 316b 19: 114.68230 d 19: VARIABLE 1 20: −58.38708 6.0 1.501432 317a 21: −450.67883 207.0 1 22: 194.39885 30.7 1.501432 317b 23: ∞ 69.5 1 EVALUATION PLANE: ∞ FOCAL LENGTH AND THE VARIABLE INTERVAL OF EACH STATE P1 P2 P3 F 12 −290.7 −630.7 −1616.1 d 13 28.0 34.4 41.8 d 15 106.5 57.0 30.0 d 19 54.2 97.3 116.9 S 2 59.4 104.6 157.4 S 2/S 1 1.80 1.80 1.86 FOCAL LENGTHS BETWEEN UNITS f1 = +47.62 mm f2 = +58.15 mm f3 = −49.40 mm f4 = +98.65 mm THE SECOND OPTICAL SYSTEM FOCAL LENGTH F 2 = +81.12 mm RE-CONDENSING POSITION (DISTANCE FROM THE THIRTEENTH PLANE): H = 13.9 mm (ALL POSITION)
H1, H2 and H3 show distances between the re-condensing position ACP at which the illuminating light from the condensed light as a light source just behind the first plural-light-source forming part 301 enters the synthetic optical system of the first and second optical systems 310 and 320 and re-condenses, and a thirteenth surface as an exit-side surface of the convex lens 314 b. The re-condensing position ACP is located in a space between the second fixed unit 314 and the first movable unit 315 beyond the first movable unit 315 by arranging the second optical system 320 in each of the states P1 to P3 This can move closer the two movable units, i.e., the first movable unit 315 and the second movable unit 316, and the increase the zooming ratio by increasing the moving amount of the movable unit.
The exposure apparatus 900 is a projection exposure apparatus that exposes onto the plate 940 a circuit pattern created on the reticle 920, e.g., in a step-and-repeat or a step-and-scan manner. Such an exposure apparatus is suitable for a sub-micron or quarter-micron lithography process. This embodiment exemplarily describes a step-and-scan exposure apparatus (which is also called “a scanner”).
The reticle 920 forms a circuit pattern (or an image) to be transferred, and is supported and driven by a reticle stage (not shown). Diffracted light emitted from the reticle 920 passes through the projection optical system 930 and is then projected onto the plate 940. The plate 940, such as a wafer and a LCD, is an exemplary object to be exposed. A photoresist is applied onto the plate 940. The reticle 920 and the plate 940 are located in an optically conjugate relationship. Since the exposure apparatus 900 is a scanner, the reticle 920 and the plate 940 are scanned at the speed ratio of the reduction ratio of the projection optical system 930, thus transferring the pattern from the reticle 920 to the plate 940. If it is a step-and-repeat exposure apparatus (referred to as a “stepper”), the reticle 920 and the plate 940 remains still when exposing the reticle pattern.
This application claims a foreign priority benefit based on Japanese Patent Applications No. 2003-351980, filed on Oct. 10, 2003, which is hereby incorporated by reference herein in its entirety as if fully set forth herein.
1. An illumination optical system for illuminating an object surface by condensing light from a light source and forming a light-condensing point, said illumination optical system comprising, in order from a side of the light source:
wherein power of said second switching optical system is larger than power of said first switching optical system, and
wherein the light-condensing point is formed at a side of the object surface relative to said movable optical system when said first switching optical system is inserted in the optical path, and the light-condensing point is formed at the side of the light source relative to said movable optical system when said second switching optical system is inserted in the optical path,
wherein said first switching optical system includes a parallel plate, and
wherein said second switching optical system includes a convex lens and a concave lens in order from the side of the light source.
exposing an object using an exposure apparatus according to claim 2; and
4. An illumination optical system for illuminating an object surface by condensing light from a light source and forming a light-condensing point, said illumination optical system comprising, in order from the side of the light source:
a first switching optical system and a second switching optical system switchably inserted into an optical path of said illumination optical system;
a movable optical system movable in a direction of an optical axis of said illumination optical system and moving along the optical axis to vary an irradiated area on an incident surface of means for forming a secondary light source;
said first switching optical system and said second switching optical system;
a first fixed optical system having a positive power;
a first movable optical system that functions as said movable optical system;
a second movable optical system having a positive power and movable in the direction of the optical axis of said illumination optical system; and
a second fixed optical system having a positive power,
wherein power of said first switching optical system is zero, said second switching optical system has a positive power, and said first movable optical system has a negative power.
5. An illumination optical system according to claim 4, wherein the light-condensing point is formed between said first movable optical system and said second movable optical system when said first switching optical system is inserted in the optical path, and the light-condensing point is formed between said second fixed optical system and said first movable optical system when said second switching optical system is inserted in the optical path.
6. An illumination optical system according to claim 4, wherein said second fixed optical system includes a concave lens and a convex lens in order from the side of the light source, and
wherein a curvature of a surface of the concave lens at the side of the light source is larger than a curvature of a surface of the concave lens at the side of the object surface, and the surface of the concave lens at the side of the light source is concave.
7. An illumination optical system according to claim 4, wherein said second movable optical system moves along the optical axis toward the side of the object surface when said first movable optical system moves along the optical axis toward the side of the light source, and said second movable optical system moves along the optical axis toward the side of the light source when said first movable optical system moves along the optical axis toward the side of the object surface.
8. An illumination optical system for illuminating an object surface by condensing light from a light source and forming a light-condensing point, said illumination optical system comprising, in order from a side of the light source:
wherein said insertable/removable optical system has a positive power, and
wherein the light-condensing point is formed at a side of the object surface relative to said movable optical system when said insertable/removable optical system is removed from the optical path, and the light-condensing point is formed at the side of the light source relative to said movable optical system when said insertable/removable optical system is inserted in the optical path,
wherein said insertable/removable optical system includes a concave lens and a convex lens in order from the side of the light source.
10. A device fabrication method comprising the steps of:
exposing an object using an exposure apparatus according to claim 9; and
11. An illumination optical system for illuminating an object surface by condensing light from a light source and forming a light-condensing point, said illumination optical system comprising, in order from the side of the light source:
an insertable/removable optical system that can be inserted into and removed from an optical path of said illumination optical system;
said insertable/removable optical system;
a second fixed optical system having a positive power;
a third fixed optical system having a positive power,
wherein said insertable/removable optical system has a positive power and said first movable optical system has a negative power.
12. An illumination optical system according to claim 11, wherein the light-condensing point is formed between said first movable optical system and said second movable optical system when said insertable/removable optical system is removed from the optical path, and the light-condensing point is formed between said second fixed optical system and said first movable optical system when said insertable/removable optical system is inserted in the optical path.
13. An illumination optical system according to claim 11, wherein said third fixed optical system includes a concave lens and a convex lens in order from the side of the light source, and
14. An illumination optical system according to claim 11, wherein said second movable optical system moves along the optical axis toward the side of the object surface when said first movable optical system moves along the optical axis toward the side of the light source, and said second movable optical system moves along the optical axis toward the side of the light source when said first movable optical system moves along the optical axis toward the side of the object surface.
US10/959,350 2003-10-10 2004-10-06 Illumination optical system and exposure apparatus having the same Active 2027-08-04 US7499145B2 (en)
JP2003351980A JP3977311B2 (en) 2003-10-10 2003-10-10 Illumination device and exposure apparatus having the illumination device
JP2003-351980 2003-10-10
US12/330,910 US8154707B2 (en) 2003-10-10 2008-12-09 Illumination optical system and exposure apparatus having the same
US12/330,910 Continuation US8154707B2 (en) 2003-10-10 2008-12-09 Illumination optical system and exposure apparatus having the same
US20050094997A1 US20050094997A1 (en) 2005-05-05
US7499145B2 true US7499145B2 (en) 2009-03-03
ID=34309282
US10/959,350 Active 2027-08-04 US7499145B2 (en) 2003-10-10 2004-10-06 Illumination optical system and exposure apparatus having the same
US12/330,910 Expired - Fee Related US8154707B2 (en) 2003-10-10 2008-12-09 Illumination optical system and exposure apparatus having the same
US (2) US7499145B2 (en)
EP (1) EP1522896B1 (en)
JP (1) JP3977311B2 (en)
KR (1) KR100582816B1 (en)
DE (1) DE602004021887D1 (en)
TW (1) TWI247189B (en)
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JP5268428B2 (en) * 2008-05-28 2013-08-21 キヤノン株式会社 Illumination optical system and image projection apparatus
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JP2002055279A (en) 2000-08-09 2002-02-20 Nikon Corp Zoom optical system, exposure device equipped therewith and exposure method
JP2002217085A (en) 2001-01-15 2002-08-02 Canon Inc Illumination system and projection aligner using it
EP1237043A2 (en) 2001-02-23 2002-09-04 Nikon Corporation Projection optical system, projection exposure apparatus, and projection exposure method
JP2003017896A (en) 2001-06-28 2003-01-17 Mitsumi Electric Co Ltd Small-sized chip mounter
US20030021579A1 (en) 2001-05-11 2003-01-30 Kenichiro Shinoda Illumination apparatus, exposure apparatus using the same and device fabrication method
DE10144246A1 (en) 2001-09-05 2003-03-20 Zeiss Carl Zoom-lens system esp. for micro-lithography projection equipment illumination device e.g. for semiconductor components manufacture, has prescribed ratio between max. and min. size of surface illuminated in image plane
JP2003100622A (en) 2001-05-11 2003-04-04 Canon Inc Lighting apparatus, aligner using the same, and device manufacturing method
JP2003178952A (en) 2001-12-12 2003-06-27 Nikon Corp Illuminating optical device, exposure system and exposure method
JP3316937B2 (en) * 1992-11-24 2002-08-19 株式会社ニコン Illumination optical device, exposure device, and transfer method using the exposure device
JP4474121B2 (en) * 2003-06-06 2010-06-02 キヤノン株式会社 Exposure equipment
2003-10-10 JP JP2003351980A patent/JP3977311B2/en not_active Expired - Fee Related
2004-09-23 TW TW93128893A patent/TWI247189B/en not_active IP Right Cessation
2004-10-05 DE DE200460021887 patent/DE602004021887D1/en active Active
2004-10-05 EP EP20040256153 patent/EP1522896B1/en not_active Expired - Fee Related
2004-10-06 US US10/959,350 patent/US7499145B2/en active Active
2004-10-08 KR KR20040080174A patent/KR100582816B1/en not_active IP Right Cessation
2008-12-09 US US12/330,910 patent/US8154707B2/en not_active Expired - Fee Related
US20020109108A1 (en) 2001-01-15 2002-08-15 Satoru Mizouchi Illumination apparatus and projection exposure apparatus using the same
A Communication from the European Patent Office issued on Feb. 9, 2006 for Appl. No. 04256153.0-2222.
A Communication from the European Patent Office issued on Nov. 25, 2005 for Appl. No. 04256153.0-2222.
English Translation of JP 2003-017896, which corresponds to German Patent DE 101 44 246 A1.
DE602004021887D1 (en) 2009-08-20
TWI247189B (en) 2006-01-11
EP1522896A2 (en) 2005-04-13
TW200528910A (en) 2005-09-01
JP3977311B2 (en) 2007-09-19
KR100582816B1 (en) 2006-05-23
EP1522896A3 (en) 2006-03-29
JP2005115222A (en) 2005-04-28
KR20050035090A (en) 2005-04-15
US20050094997A1 (en) 2005-05-05
US20090091735A1 (en) 2009-04-09
EP1522896B1 (en) 2009-07-08
US8154707B2 (en) 2012-04-10
JP5106099B2 (en) 2012-12-26 Projection objective lens, projection exposure apparatus for microlithography, and reflection reticle
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ORINO, KANJO;REEL/FRAME:015877/0043