Patent Number: 
Section: claims

1. An illumination system comprising: a reflection type integrator having cylindrical surfaces, for reflecting light from a light source; and  a condensing optical system for reflecting the light reflected by said cylindrical surfaces, and for illuminating an object, with the light, in an oblique direction with respect to a surface of the object. 2. An illuminating system comprising: a reflection type integrator having plural cylindrical surfaces, each cylindrical surface having a function for transforming light from a light source into light having a section of an arcuate shape; and  a condensing optical system for superposing lights having arcuate sectional shapes, from said reflection type integrator, one upon another on an object. 3. An X-ray exposure apparatus comprising: an X-ray illumination optical system having (i) a reflection type integrator, with cylindrical surfaces, for reflecting an X-ray beam and (ii) a concave mirror arranged so as to reflect the X-ray beam reflected by said cylindrical surfaces and to illuminate a reflection type mask with the X-ray beam in an oblique direction with respect to a surface of the reflection type mask; and  an X-ray projection optical system arranged so as to project a pattern of the reflection type mask with an X-ray beam reflected obliquely by the reflection type mask, onto a surface of a piece onto which the pattern is to be transferred. 4. An apparatus according to  claim 3 , further comprising a scanning mechanism for relatively and scanningly moving the mask and the piece relative to said X-ray projection optical system. claim 3 5. An apparatus according to  claim 3 , further comprising another concave mirror for projecting a parallel X-ray beam onto said integrator. claim 3 6. An apparatus according to  claim 3 , wherein said reflection type integrator provides a secondary light source of X-rays, and said concave mirror has a focal point disposed at the position of said secondary light source. claim 3 7. An apparatus according to  claim 3 , further comprising a stage for holding the reflection type mask thereon, wherein said stage, said reflection type integrator, and said concave mirror are arranged so that the X-ray beam is projected to the reflection type mask held by said stage, via said reflection type integrator and said concave mirror such that an illumination region of the X-ray beam defined on the reflection type mask has a rectangular shape. claim 3 8. An apparatus according to  claim 3 , wherein said reflection type integrator has a reflection surface having a multilayered film formed thereon. claim 3 9. An apparatus according to  claim 3 , further comprising a laser plasma X-ray source for emitting an X-ray beam. claim 3 10. An X-ray illumination apparatus, comprising: a reflection type integrator, having cylindrical surfaces, for reflecting an X-ray beam; and  a concave mirror arranged so as to reflect the X-ray beam reflected by said cylindrical surfaces and to illuminate an object with the X-ray beam in an oblique direction with respect to a surface of the object. 11. An apparatus according to  claim 10 , further comprising another concave mirror for projecting a parallel X-ray beam onto said integrator. claim 10 12. An apparatus according to  claim 10 , wherein said reflection type integrator provides a secondary light source of X-rays, and said concave mirror has a focal point disposed at the position of said secondary light source. claim 10 13. An apparatus according to  claim 10 , wherein said reflection type integrator has a reflection surface having a multilayered film formed thereon. claim 10 14. An apparatus according to  claim 10 , further comprising a laser plasma X-ray source for emitting an X-ray beam. claim 10 15. A device manufacturing method, comprising the steps of: setting a reflection type mask having a pattern and a piece with respect to an X-ray exposure apparatus, wherein the X-ray exposure apparatus includes (1) an X-ray illumination optical system having (i) a reflection type integrator with cylindrical surfaces, for reflecting an X-ray beam and (ii) a concave mirror arranged so as to reflect the X-ray beam reflected by the cylindrical surfaces and to illuminate a reflection type mask with the X-ray beam in an oblique direction with respect to a surface of the reflection type mask, and (2) an X-ray projection optical system arranged so as to project the pattern of the reflection type mask with an X-ray beam reflected obliquely by the reflection type mask, onto a surface of the piece; and  projecting the pattern onto the piece via the projection optical system, such that a circuit pattern is defined on the piece. 16. An illumination system comprising: a reflection type integrator having plural cylindrical surfaces, each cylindrical surface having a function for transforming an X-ray beam from an X-ray source into an X-ray beam having a section of an arcuate shape; and  a concave mirror for superposing X-ray beams having arcuate sectional shapes from said reflecting type integrator, one upon another on an object. 17. An illumination system according to  claim 16 , wherein the object is a reflection type mask, and the mask is illuminated obliquely. claim 16 18. An illumination system according to  claim 16 , wherein a plane of incidence for incidence of the X-ray beam from the X-ray source upon said reflection type integrator is parallel to a generating line of each cylindrical surface. claim 16 19. An illumination system according to  claim 16 , wherein said concave mirror comprises a rotational parabolic surface mirror. claim 16 20. An illumination system according to  claim 16 , further comprising another concave mirror for projecting a parallel X-ray beam onto said integrator. claim 16 21. An illumination system according to  claim 16 , wherein said reflection type integrator provides a secondary light source of X-rays, and said concave mirror has a focal point disposed at the position of said secondary light source. claim 16 22. An illumination system according to  claim 16 , wherein said reflection type integrator has a reflection surface having a multilayered film formed thereon. claim 16 23. An illumination system according to  claim 16 , wherein the X-ray source comprises a laser plasma X-ray source. claim 16 24. An illumination system according to  claim 16 , wherein the X-ray beam is a soft X-ray beam. claim 16 25. An X-ray exposure apparatus comprising: an illumination system including (i) a reflection type integrator having plural cylindrical surfaces, each cylindrical surface having a function for transforming an X-ray beam from an X-ray source into an X-ray beam having a section of an arcuate shape, and (ii) a concave mirror for superposing X-ray beams having arcuate sectional shapes, from said reflection type integrator, one upon another on a reflection type mask; and  a projection optical system for projecting a pattern of the reflection type mask onto a wafer, by use of X-rays reflected, by the reflection type mask, obliquely with respect to the surface of the refection type mask. 26. An apparatus according to  claim 25 , further comprising a scanning mechanism for relatively and scanningly moving the mask and an object relative to said projection optical system. claim 25 27. An apparatus according to  claim 25 , further comprising another concave mirror for projecting a parallel X-ray beam onto said integrator. claim 25 28. An apparatus according to  claim 25 , wherein said reflection type integrator provides a secondary light source of X-rays, and said concave mirror has a focal point disposed at the position of said secondary light source. claim 25 29. An illumination system according to  claim 25 , wherein said reflection type integrator has a reflection surface having a multilayered film formed thereon. claim 25 30. An illumination system according to  claim 25 , wherein the X-ray source comprises a laser plasma X-ray source. claim 25 31. A device manufacturing method, comprising the steps of: exposing a wafer with a pattern of a reflection type mask, by use of an exposure apparatus which includes (i) an illumination system having (a) a reflection type integrator having plural cylindrical surfaces, each cylindrical surface having a function for transforming an X-ray beam from an X-ray source into an X-ray beam having a section of an arcuate shape, and (b) a concave mirror for superposing X-ray beams having arcuate sectional shapes, from the reflection type integrator, one upon another on the reflection type mask, and (ii) a projection optical system for projecting the pattern of the reflection type mask onto the wafer, by use of X-rays reflected, by the reflection type mask, obliquely with respect to the surface of the reflection type mask; and  developing the exposed wafer.