Multifaceted reflecting mirror, illumination optical system based on use of the same, and semiconductor exposure apparatus
First Claim
1. A multifaceted reflecting mirror comprising:
- a plurality of reflecting mirror elements each of which is provided with a reflecting surface; and
a placement plate which is joined directly to the reflecting mirror elements with magnetic force, wherein;
the reflecting mirror elements are arranged adjacently on the placement plate which is common to the plurality of reflecting mirror elements, the reflecting mirror elements are individually joined to the placement plate so that each of the reflecting mirror elements can be individually removed from the placement plate, and at least some of the plurality of reflecting mirror elements abut against adjacent ones of the plurality of reflecting mirror elements.
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Accused Products
Abstract
A multifaceted reflecting mirror is provided with a plurality of reflecting mirror elements 10 and a base plate 13 for magnet, each of the plurality of reflecting mirror elements 10 comprising a reflecting surface 19 and a magnetic film 17 formed on a bottom surface. The respective reflecting mirror elements 10 can be positioned highly accurately on the base plate 13 by using a positioning guide 15. The maintenance operation is easily performed as well, because the respective reflecting mirror elements 10 are detachable. When the multifaceted reflecting mirror is used in combination with another multifaceted reflecting mirror for an illumination optical system of a reflection type exposure apparatus which uses, as an exposure light beam, a light beam having a short wavelength such as soft X-ray, it is possible to illuminate an exposure area on a substrate with the light beam having an extremely uniform illumination intensity.
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Citations
31 Claims
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1. A multifaceted reflecting mirror comprising:
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a plurality of reflecting mirror elements each of which is provided with a reflecting surface; and a placement plate which is joined directly to the reflecting mirror elements with magnetic force, wherein; the reflecting mirror elements are arranged adjacently on the placement plate which is common to the plurality of reflecting mirror elements, the reflecting mirror elements are individually joined to the placement plate so that each of the reflecting mirror elements can be individually removed from the placement plate, and at least some of the plurality of reflecting mirror elements abut against adjacent ones of the plurality of reflecting mirror elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 26, 27, 28, 29)
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11. An illumination optical system comprising:
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a first multifaceted reflecting mirror which comprises a plurality of reflecting mirror elements having reflecting surfaces, the plurality of reflecting mirror elements being disposed adjacently on a first placement plate; and a second multifaceted reflecting mirror which comprises a plurality of reflecting mirror elements having reflecting surfaces, the plurality of reflecting mirror elements being disposed adjacently on a second placement plate, wherein; the respective reflecting mirror elements of the first multifaceted reflecting mirror are fixed with magnetic force directly on the first placement plate which is common to the plurality of reflecting mirror elements of the first multifaceted reflecting mirror, and the reflecting mirror elements of the first multifaceted reflecting mirror are individually joined to the first placement plate so that each of the reflecting mirror elements can be individually removed from the first placement plate. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30, 31)
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Specification