X-ray or gamma ray systems or devices – Source
Reexamination Certificate
2006-11-14
2006-11-14
Glick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Source
C378S138000
Reexamination Certificate
active
07136455
ABSTRACT:
An electron emitter assembly and a method for adjusting a size of electron beams are provided. The electron emitter assembly includes a laser configured to emit a first light beam. The electron emitter assembly further includes a lens assembly configured to receive the first light beam. The lens assembly is configured to adjust a size of the first light beam between a first predetermined size and a second predetermined size larger than the first predetermined size. The lens assembly emits the first light beam toward a photo-cathode. The photo-cathode is configured to emit a first electron beam having a third predetermined size when the first light beam having the first predetermined size contacts the photo-cathode. The photo-cathode is further configured to emit a second electron beam having a fourth predetermined size when the first light beam having the second predetermined size contacts the photo-cathode. The electron emitter assembly further includes an anode configured to receive the first and second electrons beams from the photo-cathode.
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Dunham Bruce Matthew
Price John Scott
Wilson Colin R.
Cantor & Colburn LLP
General Electric Company
Glick Edward J.
Kao Chih-Cheng Glen
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