Patent Number: 
Section: claims

1. An optical axis adjusting mechanism for an X-ray lens to be implemented in an X-ray analytical instrument, comprising:an exit side adjusting mechanism for adjusting an exit side focal point of the X-ray lens to focus on an X-ray detector; andan entrance side adjusting mechanism for adjusting an entrance side focal point of the X-ray lens to focus on an analytical point of a sample,wherein the entrance side adjusting mechanism is disposed at a greater distance from the X-ray lens than a distance between the exit side adjusting mechanism and the X-ray lens. 2. The optical axis adjusting mechanism for an X-ray lens according to claim 1, whereinthe exit side adjusting mechanism includes a mechanism capable of translating the X-ray lens in parallel with two directions perpendicular to the optical axis of the X-ray lens. 3. The optical axis adjusting mechanism for an X-ray lens according to claim 2, whereinthe exit side adjusting mechanism includes a detachable section configured to allow at least a portion operated by an operator to be detached. 4. The optical axis adjusting mechanism for an X-ray lens according to claim 1, whereinthe exit side adjusting mechanism includes a mechanism capable of rotationally moving the X-ray lens around two axes passing through the entrance side focal point of the X-ray lens and perpendicular to the optical axis of the X-ray lens. 5. The optical axis adjusting mechanism for an X-ray lens according to claim 3, whereinthe exit side adjusting mechanism includes a detachable section configured to allow at least a portion operated by an operator to be detached. 6. The optical axis adjusting mechanism for an X-ray lens according to claim 1, whereinthe X-ray lens includes a holding mechanism for keeping the X-ray lens in a position adjusted by the exit side adjusting mechanism. 7. The optical axis adjusting mechanism for an X-ray lens according to claim 1, whereinthe X-ray detector is a superconducting X-ray detector mounted on a refrigerator,the entrance side adjusting mechanism is disposed adjacent to the refrigerator, andthe exit side adjusting mechanism is movable integrally with the refrigerator. 8. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism includes a mechanism capable of translating the refrigerator in parallel with two directions traversing the optical axis of the X-ray lens. 9. The optical axis adjusting mechanism for an X-ray lens according to claim 8, whereinthe two directions are substantially perpendicular to the optical axis of the X-ray lens. 10. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism includes a mechanism capable of translating the refrigerator in parallel with a horizontal direction perpendicular to the optical axis of the X-ray lens. 11. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism includes a mechanism capable of rotationally moving the refrigerator around each of two axes positioned differently from the optical axis of the X-ray lens and passing through one of the refrigerator and an area adjacent to the refrigerator. 12. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism includes:a mechanism capable of rotationally moving the refrigerator around a rotational axis positioned differently from the optical axis of the X-ray lens and passing through one of the refrigerator and an area adjacent to the refrigerator; andthe rotational axis of the mechanism rotationally moving the refrigerator is substantially perpendicular to the ground. 13. The optical axis adjusting mechanism for an X-ray lens according to claim 12, whereinthe entrance side adjusting mechanism moves the entrance side focal point of the X-ray lens approximately parallel to a direction substantially perpendicular to the optical axis of the X-ray lens by the rotational movement around the rotational axis. 14. The optical axis adjusting mechanism for an X-ray lens according to claim 12, whereinthe entrance side adjusting mechanism includes a mechanism capable of moving the entrance side focal point of the X-ray lens integrally with the refrigerator in a horizontal direction. 15. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism includes:a mechanism capable of translating the entrance side focal point of the X-ray lens integrally with the refrigerator in parallel with a direction traversing the optical axis of the X-ray lens; anda mechanism capable of rotationally moving the entrance side focal point of the X-ray lens integrally with the refrigerator around an axis positioned differently from the optical axis of the X-ray lens. 16. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism is capable of adjusting the entrance side focal point of the X-ray lens, while firmly connecting a stage mounting the entrance side adjusting mechanism thereon with an analytical vessel containing the sample, an excitation source and a detector, and then inserting the X-ray lens in the analytical vessel. 17. The optical axis adjusting mechanism for an X-ray lens according to claim 7, whereinthe entrance side adjusting mechanism is capable of adjusting the entrance side focal point of the X-ray lens, while connecting the refrigerator with a scanning electron microscope via a bellows, and firmly connecting a stage mounting the entrance side adjusting mechanism thereon to the scanning electron microscope, and then inserting the X-ray lens in a vacuum vessel of the scanning electron microscope. 18. An X-ray analytical instrument comprising the optical axis adjusting mechanism according to claim 1. 19. A method of adjusting an optical axis of an X-ray lens to be implemented in an X-ray analytical instrument, comprising:disposing an entrance side adjusting mechanism for adjusting an entrance side focal point of the X-ray lens to focus on an analytical point of a sample at a greater distance from the X-ray lens than a distance between an exit side adjusting mechanism for adjusting an exit side focal point of the X-ray lens to focus on an X-ray detector and the X-ray lens;adjusting the exit side focal point of the X-ray lens to focus on the X-ray detector by the exit side adjusting mechanism; andadjusting the entrance side focal point of the X-ray lens to focus on the analytical point of the sample by the entrance side adjusting mechanism.