Patent Number: 
Section: claims

1. A method of adjusting an X-ray optical apparatus, said X-ray optical apparatus including:an X-ray source; anda reflective structure in whichat least three reflective substrates are arranged with an interval, andX-rays which are incident into a plurality of passages, both sides of each passage being put between the reflective substrates, are reflected and parallelized by the reflective substrate at both sides of each passage to be emitted from the passage,wherein when one edge of the reflective structure is an inlet of the X-ray and the other edge is an outlet of the X-ray, a pitch of the reflective substrates at the outlet side is larger than a pitch at the inlet side,the method comprising adjusting the relative positions of the X-ray source and the reflective structure so as to reduce a penumbra amount formed by the X-ray emitted from each passage. 2. The method of adjusting an X-ray optical apparatus according to claim 1, wherein the penumbra amount is a penumbra amount formed by an object when the X-ray emitted from the passage is irradiated onto the object. 3. The method of adjusting an X-ray optical apparatus according to claim 1, wherein the penumbra amount is a penumbra amount formed by a one-dimensional grating when the X-ray emitted from the passage is irradiated onto the one-dimensional grating. 4. The method of adjusting an X-ray optical apparatus according to claim 1, wherein when the X-ray emitted from the passage is irradiated onto a first one-dimensional grating and a second one-dimensional grating which are disposed in order from the outlet side of the reflective structure, the penumbra amount is estimated based on an interval of moiré stripes of the X-ray formed by the two one-dimensional gratings. 5. The method of adjusting an X-ray optical apparatus according to claim 1, wherein when the X-ray emitted from the passage is irradiated onto a solar slit, the penumbra amount is estimated based on an intensity of the X-ray which passes through the solar slit. 6. The method of adjusting an X-ray optical apparatus according to claim 1, wherein in a state where a one-dimensional grating that allows the X-ray to be incident into only a specific passage is disposed between the X-ray source and the reflective structure, the penumbra amount is estimated based on a size of the X-ray emitted from the specific passage. 7. An X-ray optical apparatus, comprising:an X-ray source; anda reflective structure in whichat least three reflective substrates are arranged with an interval, andX-rays which are incident into a plurality of passages, both sides of each passage being put between the reflective substrates, are reflected and parallelized by the reflective substrate at both sides of each passage to be emitted from the passage,wherein when one edge of the reflective structure is an inlet of the X-ray and the other edge is an outlet of the X-ray, a pitch of the reflective substrates at the outlet side is larger than a pitch at the inlet side,wherein the X-ray source and the reflective structure are disposed so as to reduce a penumbra amount formed by the X-ray emitted from each of the passages. 8. The X-ray optical apparatus according to claim 7, wherein the penumbra amount is a penumbra amount formed by an object when the X-ray emitted from the passage is irradiated onto the object. 9. The X-ray optical apparatus according to claim 7, wherein the penumbra amount is a penumbra amount formed by a one-dimensional grating when the X-ray emitted from the passage is irradiated onto the one-dimensional grating. 10. The X-ray optical apparatus according to claim 7, wherein when the X-ray emitted from the passage is irradiated onto a first one-dimensional grating and a second one-dimensional grating which are disposed in order from the outlet side of the reflective structure, the penumbra amount is a value estimated based on an interval of moiré stripes of the X-ray formed by the two one-dimensional gratings. 11. The X-ray optical apparatus according to claim 7, wherein the penumbra amount is a value estimated based on an intensity of the X-ray which passes through a solar slit when the X-ray emitted from the passage is irradiated onto the solar slit. 12. The X-ray optical apparatus according to claim 7, wherein in a state where a one-dimensional grating that allows the X-ray to be incident into only a specific passage is disposed between the X-ray source and the reflective structure, the penumbra amount is a value estimated based on a size of the X-ray emitted from the specific passage.