Projection exposure apparatus and method, catadioptric optical system and manufacturing method of devices
First Claim
1. A catadioptric optical system forming a reduced image of a first surface onto a second surface comprising:
- a first imaging optical subsystem which is arranged in an optical path between the first surface and the second surface and includes a dioptric imaging optical system to form a first intermediate image of the first surface;
a first folding mirror which is arranged in the vicinity of a position of forming the first intermediate image to deflect a beam prior to or after the position where the first intermediate image is formed;
a second imaging optical subsystem which is arranged in an optical path between the first folding mirror and the second surface and which forms a second intermediate image with a magnification factor nearly equal to the first intermediate image in the vicinity of a position of forming the first intermediate image based on the beam from the first intermediate image, the second imaging optical subsystem includes a concave reflecting mirror and at least one negative lens;
a second folding mirror which is arranged in the vicinity of a position of forming the first intermediate image to deflect a beam prior to or after the position where the second intermediate image is formed; and
a third imaging optical subsystem which is arranged in an optical path between the second imaging optical subsystem and the second surface and includes a dioptric imaging optical system to form the reduced image onto the second surface based on the beam from the second intermediate image,wherein the catadioptric optical system is a telecentric optical system on both sides of the first surface and the second surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A projection exposure apparatus includes a projection optical system, which is arranged in an optical path between a first surface and a second surface, projects a pattern on a negative plate arranged on the first surface onto a workpiece arranged on the second surface and exposes the pattern thereon. The projection optical system includes a first imaging optical subsystem having a dioptric imaging optical system; a second imaging optical subsystem having a concave reflecting system; a third imaging optical subsystem having a dioptric imaging optical system; a first folding mirror arranged in an optical path between the first imaging optical subsystem and the second imaging optical subsystem; and a second folding mirror arranged in an optical path between the second imaging optical subsystem and the third imaging optical subsystem. The first imaging optical subsystem forms a first intermediate image and the second imaging optical subsystem forms a second intermediate image.
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Citations
108 Claims
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1. A catadioptric optical system forming a reduced image of a first surface onto a second surface comprising:
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a first imaging optical subsystem which is arranged in an optical path between the first surface and the second surface and includes a dioptric imaging optical system to form a first intermediate image of the first surface; a first folding mirror which is arranged in the vicinity of a position of forming the first intermediate image to deflect a beam prior to or after the position where the first intermediate image is formed; a second imaging optical subsystem which is arranged in an optical path between the first folding mirror and the second surface and which forms a second intermediate image with a magnification factor nearly equal to the first intermediate image in the vicinity of a position of forming the first intermediate image based on the beam from the first intermediate image, the second imaging optical subsystem includes a concave reflecting mirror and at least one negative lens; a second folding mirror which is arranged in the vicinity of a position of forming the first intermediate image to deflect a beam prior to or after the position where the second intermediate image is formed; and a third imaging optical subsystem which is arranged in an optical path between the second imaging optical subsystem and the second surface and includes a dioptric imaging optical system to form the reduced image onto the second surface based on the beam from the second intermediate image, wherein the catadioptric optical system is a telecentric optical system on both sides of the first surface and the second surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A catadioptric optical system forming a reduced image of a first surface onto a second surface comprising:
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a first imaging optical subsystem with a first optical axis, which is arranged in an optical path between the first surface and the second surface and includes a dioptric imaging optical system; a second imaging optical subsystem with a concave reflecting mirror and a second optical axis, which is arranged in an optical path between the first imaging optical subsystem and the second surface; and a third imaging optical subsystem with a third optical axis, which is arranged in an optical path between the second imaging optical subsystem and the second surface and includes a dioptric imaging optical system, wherein the first optical axis and the second optical axis intersect with each other and the second optical axis and the third optical axis intersect with each other, and wherein the catadioptric optical system is a telecentric optical system on both sides of the first surface and the second surface. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A catadioptric optical system forming a reduced image of a first surface onto a second surface comprising:
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a first imaging optical subsystem with a first optical axis, which is arranged in an optical path between the first surface and the second surface and includes a dioptric imaging optical system; a second imaging optical subsystem with a concave reflecting mirror and a second optical axis, which is arranged in an optical path between the first imaging optical subsystem and the second surface; and a third imaging optical subsystem with a third optical axis, which is arranged in an optical path between the second imaging optical subsystem and the second surface and includes a dioptric imaging optical system, wherein the first optical axis and the third optical axis are located on a common axis, and wherein the catadioptric optical system is a telecentric optical systemon both sides of the first surface and the second surface. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A projection exposure apparatus comprising:
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a projection optical system which is arranged in an optical path between a first surface and a second surface that projects and exposes a pattern located on the first surface onto a workpiece located on the second surface, and the projection optical system that comprises; a first imaging optical subsystem including a dioptric imaging optical system; a second imaging optical subsystem including a concave reflecting mirror; a third imaging optical subsystem including a dioptric imaging optical system; a first folding mirror arranged in an optical path between the first imaging optical subsystem and the second imaging optical subsystem; and a second folding mirror arranged in an optical path between the second imaging optical subsystem and the third imaging optical subsystem; wherein the first imaging optical subsystem forms a first intermediate image of the first surface into the optical path between the first imaging optical subsystem and the second imaging optical subsystem, the second imaging optical subsystem forms a second intermediate image of the first surface into the optical path between the second imaging optical subsystem, and wherein the projection optical system is a telecentric optical system on both sides of the first surface and the second surface. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. An exposure method for projecting a pattern onto a workpiece via a projection optical system, the method comprising:
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directing an illuminating light in the ultraviolet region to the pattern; directing the illuminating light to a first imaging optical subsystem including a dioptric imaging optical system via the pattern to form a first intermediate image of the pattern; directing the illuminating light from the first intermediate image to a second imaging optical subsystem including a concave reflecting mirror to form a second intermediate image; directing the illuminating a light from the second intermediate image to a third imaging optical subsystem including a dioptric imaging optical system; deflecting the illuminating light from the first imaging optical subsystem by a first folding mirror arranged in an optical path between the first imaging optical subsystem and the second imaging optical subsystem; and deflecting the illuminating light from the second imaging optical subsystem by a second folding mirror arranged in an optical path between the second imaging optical subsystem and the third imaging optical subsystem, wherein the projection optical system is a telecentric optical system on the pattern side and the workpiece side. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
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79. A catadioptric optical system forming a reduced image of a first surface onto a second surface comprising:
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a first imaging optical subsystem with a first optical axis, which is arranged in an optical path between the first surface and the second surface and includes a dioptric imaging optical system; a second imaging optical subsystem with a concave reflecting mirror and a second optical axis, which is arranged in an optical path between the first imaging optical subsystem and the second surface; a third imaging optical subsystem with a third optical axis, which is arranged in an optical path between the second imaging optical subsystem and the second surface and includes a dioptric imaging optical system; a first folding mirror which is arranged in an optical path between the first imaging optical subsystem and the second imaging optical subsystem; and a second folding mirror which is arranged in an optical path between the second imaging optical subsystem and the third imaging optical subsystem, wherein the first optical axis and the third optical axis are located on a common axis, wherein the first folding mirror and the second folding mirror are formed monolithically, and wherein the catadioptric optical system is a telecentric optical system on both sides of the first surface and the second surface. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88, 89)
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90. A catadioptric optical system forming an image of a first surface onto a second surface comprising:
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a first imaging optical subsystem with a first optical axis, which is arranged in an optical path between the first surface and the second surface and includes a dioptric imaging optical system; a second imaging optical subsystem with a concave reflecting mirror and a second optical axis, which is arranged in an optical path between the first imaging optical subsystem and the second surface; a third imaging optical subsystem with a third optical axis, which is arranged in an optical path between the second imaging optical subsystem and the second surface and includes a dioptric imaging optical system; a first folding mirror which is arranged in an optical path between the first imaging optical subsystem and the second imaging optical subsystem; and a second folding mirror which is arranged in an optical path between the second imaging optical subsystem and the third imaging optical subsystem, wherein the first optical axis and the third optical axis are located on a common axis, wherein an intersection line of an extension plane of a reflecting surface of the first folding mirror and an extension plane of a reflecting surface of the second folding mirror is on the common axis, and wherein the catadioptric optical system is a telecentric optical system on both sides of the first surface and the second surface. - View Dependent Claims (91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108)
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Specification