The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 1994
Filed:
Nov. 12, 1992
Katsuyuki Kinoshita, Hamamatsu, JP;
Hamamatsu Photonics K.K., Shizuoka, JP;
Abstract
An electron detection apparatus detects information contained in electrons emitted from a sample. For the detection of electron, the apparatus uses a probe disposed in close proximity to the sample. The probe has a first side and a second side between which penetrates an aperture, wherein the first side of the probe confronts the sample. A voltage is applied between the probe and the sample. The voltage applied therebetween is set to a such a level that an electric field effect yields on the surface of the sample. Under the electric field effect yielding on the surface of the sample, light or heat is applied to the surface of the sample to emit the electrons from the sample. The electrons thus emitted is detected by entering electrons into the aperture at the first side, passing through the aperture and exiting from the aperture at the second side.