X-ray generating apparatus and control method thereof

An X-ray generating apparatus, comprising:

• an X-ray tube configured to generate an X-ray;
• and
• a controller configured to control driving of the X-ray tube;
• the X-ray tube comprising:
• an electron source configured to emit electrons due to application of a voltage;
• a transmission-type target configured to generate an X-ray due to collision of electrons emitted from the electron source;
• a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and the shield member being configured to block an X-ray that scatters toward the electron source;
• and
• a lens electrode disposed between the electron source and the shield member, and being applied by a first voltage that is less than the voltage applied to the electron source;
• the controller being configured to, when generating the X-ray, start application of a voltage to the transmission-type target after switching the voltage applied to the lens electrode from the first voltage to a second voltage that is a higher voltage than the voltage applied to the electron source, and
• when stopping generation of the X-ray, switch the voltage applied to the lens electrode from the second voltage to the first voltage after stopping application of the voltage to the transmission-type target.

A control method of an X-ray generating apparatus configured to control driving of an X-ray tube,

• the X-ray tube comprising:
• an electron source configured to emit electrons due to application of a voltage;
• a transmission-type target configured to generate an X-ray due to collision of electrons emitted from the electron source;
• and
• a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and the shield member being configured to block an X-ray that scatters towards the electron source;
• the control method comprising:
• when generating the X-ray, starting application of a voltage to the transmission-type target, and causing emission of electrons from the electron source after passage of a predetermined period indicating a time period from the start of voltage application until the transmission-type target reaches a predetermined voltage;
• and
• when stopping generation of the X-ray, stopping application of the voltage to the transmission-type target after stopping the emission of electrons from the electron source.

A control method of an X-ray generating apparatus configured to control driving of an X-ray tube,

• the X-ray tube comprising:
• an electron source configured to emit electrons due to application of a voltage;
• a transmission-type target configured to generate an X-ray due to collision of electrons emitted from the electron source;
• a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and the shield member being configured to block an X-ray that scatters toward the electron source;
• and
• a lens electrode disposed between the electron source and the shield member, and being applied by a first voltage that is less than the voltage applied to the electron source;
• the control method comprising:
• when generating the X-ray, starting application of a voltage to the transmission-type target after switching the voltage applied to the lens electrode from the first voltage to a second voltage that is a higher voltage than the voltage applied to the electron source;
• and
• when stopping generation of the X-ray, switching the voltage applied to the lens electrode from the second voltage to the first voltage after stopping application of the voltage to the transmission-type target.