US4912737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray image observing device
Assignee: Hamamatsu Photonics KK
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Filing: 1988-10-27
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Granted: 1990-03-27
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Expires: 2008-10-27
Abstract
Abstract The X-ray image microscope according to this invention comprises an X-ray absorption imaging unit having a glazing incidence mirror, and an electron imaging unit having an electron lens connected to the X-ray absorption imaging unit. A thin support film is provided on the boundary between the X-ray absorption imaging unit and the electron imaging unit. On the support film is formed a photocathode screen which emits photoelectrons in response to an incident X-ray. The X-ray absorption image of an X-ray which has penetrated a specimen, e.g. a living cell, is magnified by the X-ray imaging unit, and the electron image corresponding to the X-ray image is magnified by an electron lens. The magnified electron image is converted into a light image by a phosphor screen, and the light image is caught by a TV camera. In this way biological materials can be observed, magnified in their living states.
Inventors
- 👤 Shinji Ohsuka
- 👤 Masaru Sugiyama
- 👤 Tsuyoshi Hayakawa
- 👤 Katsuyuki Kinoshita
- 👤 Akira Ohba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:05
CPC Classifications
G; G21; G21K; G21K7/00
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
107 words
An X-ray image observing device comprising: a vacuum chamber; X-ray imaging means disposed in said vacuum chamber for magnifying an X-ray image to form a magnified X-ray image at a first position of said vacuum chamber; X-ray converting means disposed at said first position for converting incident X-rays into electrons and emitting the converted electrons from a side opposed to the X-ray incident side thereof; and electron image formation means for guiding the electrons emitted from said X-ray converting means to a second position of said vacuum chamber to form an electron image corresponding to said magnified X-ray image at said second position of said vacuum chamber.
Claim 2
Dependent Claim
107 words
An X-ray image observing device comprising: a vacuum chamber; X-ray imaging means disposed in said vacuum chamber for magnifying an X-ray image to form a magnified X-ray image at a first position of said vacuum chamber; X-ray converting means disposed at said first position for converting incident X-rays into electrons and emitting the converted electrons from a side opposed to the X-ray incident side thereof; and electron image formation means for guiding the electrons emitted from said X-ray converting means to a second position of said vacuum chamber to form an electron image corresponding to said magnified X-ray image at said second position of said vacuum chamber.
Claim 3
Dependent Claim
29 words
An X-ray image observing device according to claim 1, wherein said electron image formed by said electron image formation means is magnified with respect to said magnified X-ray image.
Claim 4
Dependent Claim
84 words
An X-ray image observing device according to claim 1, further comprising: an X-ray source located outside of said vacuum chamber and said X-ray source having a radiation surface; an object mounting means disposed between said radiation surface of said X-ray source and said vacuum chamber for positioning an object to be observed, and wherein X-rays radiated from said X-ray source is projected from said X-ray source to said object and directed into said vacuum chamber through an input window provided on said vacuum chamber.
Claim 5
Dependent Claim
93 words
An X-ray image observing device according to claim 3, wherein, on a side of said vacuum chamber nearest to said input window, there is provided an object compartment which is in communication with said vacuum chamber through an openable and closable gate valve, said vacuum chamber being adapted to draw a vacuum, said object mounting means being positioned in said object compartment, and said X-ray image observing device further including opening means for opening said gate valve and said object mounting means including positioning means for positioning said object adjacent said input window.
Claim 6
Dependent Claim
60 words
An X-ray image observing device according to claim 1, wherein said X-ray converting means comprises a support film having an X-ray incident side and an opposite side, said X-ray converting means further comprising a photocathode screen formed on the opposite side of said support film, and said support film being held by a support member fixed to said vacuum chamber.
Claim 7
Dependent Claim
33 words
An X-ray image observing device according to claim 5, wherein said support film is made of an X-ray penetrating material and has a thickness which essentially does not hinder the penetration of X-rays.
Claim 8
Dependent Claim
19 words
An X-ray image observing device according to claim 5, wherein said support member has at least one through hole.
Claim 9
Dependent Claim
33 words
An X-ray image observing device according to claim 7, wherein said support member is a cylindrical body projecting in an electron emitting direction and said support film is provided at said first position.
Claim 10
Dependent Claim
44 words
An X-ray image observing device according to claim 1, wherein at said second position there is provided a display screen which scintillates in response to an incident electron, and said display screen is formed on a light transmitting inside surface of said vacuum chamber.
Claim 11
Dependent Claim
30 words
An X-ray image observing device according to claim 9, wherein a microchannel plate for multiplying an electron incident thereinto is arranged between said display screen and said X-ray converting means.
Claim 12
Dependent Claim
28 words
An X-ray image observing device according to claim 1, further comprising imaging means for taking a picture of said electron image formed by said electron image formation means.
Claim 13
Dependent Claim
38 words
An X-ray image observing device according to claim 11, wherein said imaging means comprises electron conversion means for converting said electron image into a light image, and optical imaging means for taking a picture of said light image.
Claim 14
Dependent Claim
30 words
An X-ray image observing device according to claim 11, wherein said imaging means has storing means for storing the data obtained from said picture for a certain period of time.
Claim 15
Dependent Claim
123 words
An X-ray image observing device comprising: a vacuum chamber; an X-ray source disposed in said vacuum chamber; X-ray imaging means disposed in said vacuum chamber for magnifying an X-ray image formed by the radiation of said X-ray source to form a magnified X-ray image at a first position of said vacuum chamber; X-ray converting means disposed at said first position for converting incident X-rays into electrons and emitting the converted electrons from a side opposed to the X-ray incident side thereof; and electron image formation means for guiding the electrons emitted from said X-ray converting means to a second position of said vacuum chamber to form an electron image corresponding to said magnified X-ray image at said second position of said vacuum chamber.
Claim 16
Dependent Claim
123 words
An X-ray image observing device comprising: a vacuum chamber; an X-ray source disposed in said vacuum chamber; X-ray imaging means disposed in said vacuum chamber for magnifying an X-ray image formed by the radiation of said X-ray source to form a magnified X-ray image at a first position of said vacuum chamber; X-ray converting means disposed at said first position for converting incident X-rays into electrons and emitting the converted electrons from a side opposed to the X-ray incident side thereof; and electron image formation means for guiding the electrons emitted from said X-ray converting means to a second position of said vacuum chamber to form an electron image corresponding to said magnified X-ray image at said second position of said vacuum chamber.
Claim 17
Dependent Claim
29 words
An X-ray image observing device according to claim 14, wherein said electron image formed by said electron image formation means is magnified with respect to said magnified X-ray image.
Claim 18
Dependent Claim
52 words
An X-ray image observing device according to claim 14, wherein said X-ray source comprises a cathode for emitting electrons, and said X-ray source further comprises a partitioning film and an X-ray target formed on said partitioning film, said X-ray target emitting said X-rays in response to incident electrons originating from said cathode.
Claim 19
Dependent Claim
97 words
An X-ray image observing device according to claim 16, wherein on the side of said vacuum chamber nearest said X-ray target there is provided an object compartment which is in communication with said vacuum chamber through an openable and closable gate valve and said vacuum chamber being adapted to draw a vacuum; object mounting means for setting an object to be observed is provided in said object compartment, said image observing means further including opening means for opening said gate valve and said object mounting means including positioning means for positioning said object adjacent said X-ray target.
Claim 20
Dependent Claim
60 words
An X-ray image observing device according to claim 14, wherein said X-ray converting means comprises a support film having an X-ray incident side and an opposite side, said X-ray converting means further comprising a photocathode screen formed on the opposite side of said support film, and said support film being held by a support member fixed to said vacuum chamber.
Claim 21
Dependent Claim
34 words
An X-ray image observing device according to claim 18, wherein said support film is made of an X-ray penetrating material and has a thickness which essentially does not hinder the penetration of the X-rays.
Claim 22
Dependent Claim
19 words
An X-ray image observing device according to claim 19, wherein said support member has at least one through hole.
Claim 23
Dependent Claim
33 words
An X-ray image observing device according to claim 18, wherein said support member is a cylindrical body projecting in an electron emitting direction and said support film is provided at said first position.
Claim 24
Dependent Claim
44 words
An X-ray image observing device according to claim 14, wherein at said second position there is provided a display screen which scintillates in response to an incident electron, and said display screen is formed on a light transmitting inside surface of said vacuum chamber.
Claim 25
Dependent Claim
30 words
An X-ray image observing device according to claim 22, wherein a microchannel plate for multiplying an electron incident thereinto is arranged between said display screen and said X-ray converting means.
Claim 26
Dependent Claim
28 words
An X-ray image observing device according to claim 14, further comprising imaging means for taking a picture of said electron image formed by said electron image formation means.
Claim 27
Dependent Claim
38 words
An X-ray image observing device according to claim 14, wherein said imaging means comprises electron conversion means for converting said electron image into a light image, and optical imaging means for taking a picture of said light image.
Claim 28
Dependent Claim
30 words
An X-ray image observing device according to claim 24, wherein said imaging means has storing means for storing the data obtained from said picture for a certain period of time.
Claim 29
Dependent Claim
30 words
An X-ray image observing device according to claim 24, wherein said imaging means has storing means for storing the data obtained from said picture for a certain period of time.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |