Patent Number: 051736128
Section: claims

1. An X-ray window comprising an X-ray transparent film made from diamond, diamond reinforcing crosspieces formed on the X-ray transparent film and a supporting ring stuck to a peripheral part of the X-ray transparent film. 2. An X-ray window comprising an X-ray transparent film made from diamond, a ring substrate fitted to a peripheral part of the transparent film, diamond reinforcing crosspieces formed on the X-ray transparent film and a supporting ring stuck to a peripheral part of the substrate. 3. An X-ray window as claimed in claim 1 or 2, wherein the thickness of the X-ray transparent film is 0.05 to 10 .mu.m and the thickness of the diamond crosspieces is bigger than that of the diamond X-ray transparent film. 4. An X-ray window comprising an X-ray transparent film made from diamond, a ring substrate fitted to a peripheral part of the transparent film, diamond reinforcing crosspieces formed on the X-ray transparent film and a supporting ring stuck to a peripheral part of the X-ray transparent film. 5. An X-ray window as claimed in claim 4, wherein the ring substrate is made from silicon, germanium, gallium arsenide, molybdenum or tungsten. 6. An X-ray window comprising an X-ray transparent film made from diamond, diamond reinforcing crosspieces formed on the X-ray transparent film and a supporting ring stuck to a peripheral part of the diamond reinforcing crosspieces.