Patent US4777523A successfully refreshed from Google Patents.
US4777523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron microscope with television observation apparatus
Assignee: Hitachi Ltd
•
Filing: 1987-10-02
•
Granted: 1988-10-11
•
Expires: 2007-10-02
Abstract
Abstract An electron microscope with a television observation apparatus is equipped such that an observation image of the electron microscope on a television fluorescent screen and an image displayed on a cathode-ray tube through taking-in of the electron microscope observation image by a television camera are conformed to each other in up/down and right/left directions and composition. This can be realized by making the polarity of a deflection electrode of the television camera or a deflection electrode of the cathode-ray tube in a horizontal scanning direction reverse to a usual polarity, or by interposing an odd number of reflectors between the television fluorescent screen and the television camera.
Inventors
- 👤 Takashi Yokoto
- 👤 Toshiyuki Ohashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:55
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/22; H01J37/224
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
An electron microscope with a television observation apparatus including means for generating and accelerating an electron beam, means for irradiating a specimen with said electron beam, means for enlarging and focusing the electron beam transmitted through said specimen, and means for converting an image of the enlarged focused electron beam into a TEM image on a front surface thereof, said television observation apparatus comprising: a television camera for taking in an image of said TEM image from a rear surface of said converting means; means for displaying the image taken in by said television camera; and means for inverting the direction and composition of the image displayed by said displaying means to those of said TEM image on the front surface of said converting means.
Claim 2
Dependent Claim
125 words
An electron microscope with a television observation apparatus including means for generating and accelerating an electron beam, means for irradiating a specimen with said electron beam, means for enlarging and focusing the electron beam transmitted through said specimen, and means for converting an image of the enlarged focused electron beam into a TEM image on a front surface thereof, said television observation apparatus comprising: a television camera for taking in an image of said TEM image from a rear surface of said converting means; means for displaying the image taken in by said television camera; and means for inverting the direction and composition of the image displayed by said displaying means to those of said TEM image on the front surface of said converting means.
Claim 3
Dependent Claim
40 words
An electron microscope with a television observation apparatus according to claim 1, wherein said inverting means includes means for making the polarity of a deflection electrode of said television camera in a horizontal scanning direction reverse to a usual polarity.
Claim 4
Dependent Claim
20 words
An electron microscope with a television observation apparatus according to claim 1, wherein said displaying means includes a cathode-ray tube.
Claim 5
Dependent Claim
40 words
An electron microscope with a television observation apparatus according to claim 3, wherein said inverting means includes means for making the polarity of a deflection electrode of said cathode-ray tube in a horizontal scanning direction reverse to a usual polarity.
Claim 6
Dependent Claim
59 words
An electron microscope with a television observation apparatus according to claim 1, wherein said inverting means includes reflector means for mirror-reflecting an odd number of times said image taken from the rear surface of said converting means so that the odd number of times mirror-reflected image conforms to said TEM image and thereafter transferring it to said television camera.
Claim 7
Dependent Claim
43 words
An electron microscope with a television observation apparatus according to claim 1, wherein said image of said TEM image on the rear surface of said converting means is a mirror image of said TEM image on the front surface of said converting means.
Claim 8
Dependent Claim
67 words
An electron microscope with a television observation apparatus according to claim 6, wherein said inverting means inverts the direction and composition of the image displayed by said display means to a mirror image of said mirror image of said TEM image on the rear surface of said converting means so that the displayed image conforms to said TEM image on the front surface of said converting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |