Transmission electron microscope
First Claim
1. A transmission electron microscope comprising:
- an electron gun producing an electron beam;
a condenser lens system which focuses the electron beam onto a specimen;
an imaging lens system consisting of an objective lens, an intermediate lens, and a projector lens;
a display means upon which an image created by the electrons emitted from the specimen is displayed;
a voltage-applying means for applying a negative voltage to the specimen placed between the magnetic pole pieces of the objective lens; and
means for irradiating the specimen with exciting rays to induce photoelectrons from the lower surface of the specimen, whereby the photoelectrons emitted from the specimen are imaged by the imaging lens system.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmission electron microscope capable of operating in photoelectron emission microscopy mode as well as in transmission electron microscopy mode. A negative voltage is applied to a specimen placed between the magnetic pole pieces of the objective lens. In the photoelectron emission microscopy mode, the specimen is irradiated with exciting rays to induce photoelectrons from the rear surface of the specimen. The exciting rays can be soft x-rays or ultraviolet rays produced from a high-pressure mercury lamp. The soft x-rays can be produced by directing the electron beam emitted from the electron gun of the microscope either onto the specimen or onto one or more targets placed over the specimen.
8 Citations
12 Claims
-
1. A transmission electron microscope comprising:
-
an electron gun producing an electron beam; a condenser lens system which focuses the electron beam onto a specimen; an imaging lens system consisting of an objective lens, an intermediate lens, and a projector lens; a display means upon which an image created by the electrons emitted from the specimen is displayed; a voltage-applying means for applying a negative voltage to the specimen placed between the magnetic pole pieces of the objective lens; and means for irradiating the specimen with exciting rays to induce photoelectrons from the lower surface of the specimen, whereby the photoelectrons emitted from the specimen are imaged by the imaging lens system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification