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41.Electron beam injector and focusing means suitable for electron microscope 失效
Title translation: 电子束注射器和聚焦装置适用于电子显微镜公开(公告)号:US3614520A
公开(公告)日:1971-10-19
申请号:US3614520D
申请日:1968-09-12
Applicant: FORGFLO CORP
Inventor: COLEMAN JOHN W
IPC: H01J3/02 , H01J37/063 , H01J37/07 , H01J29/58
CPC classification number: H01J37/07 , H01J3/029 , H01J37/063
Abstract: An electron beam focusing means including a grid cap and accelerating lenses is provided. To permit a small change of voltage on the grid cap to overcome the defocusing effect of a great change in voltage on the accelerating electrodes, a short focal length accelerating lens is positioned in the front focal length of the long focal length lens constituted by the high voltage accelerating electrodes.
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公开(公告)号:US3392300A
公开(公告)日:1968-07-09
申请号:US50606365
申请日:1965-11-02
Applicant: THOMSON HOUSTON COMP FRANCAISE
Inventor: ARNAUD MICHEL M , PIERRE YVON
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43.Device for producing a high-intensity beam of charge carriers of small aperture 失效
Title translation: 用于生产小光圈的高强度电荷载流子的装置公开(公告)号:US3225248A
公开(公告)日:1965-12-21
申请号:US19680262
申请日:1962-05-22
Applicant: UNITED AIRCRAFT CORP
Inventor: WILHELM SCHEFFELS
IPC: H01J3/02
CPC classification number: H01J3/029
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44.Electron gun structure for producing an electron beam free of radial velocity components wherein the length of the first non-magnetic cylinder is approximately equal to an integral number of wave lengths of the scallop frequency 失效
Title translation: 用于产生没有径向速度分量的电子束的电子枪结构,其中第一非磁性圆柱体的长度近似等于扇贝频率的波长的整数个数公开(公告)号:US3215890A
公开(公告)日:1965-11-02
申请号:US11183161
申请日:1961-05-22
Applicant: ZENITH RADIO CORP
Inventor: BLUM ASHER S
IPC: H01J3/02
CPC classification number: H01J3/029
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公开(公告)号:US3205392A
公开(公告)日:1965-09-07
申请号:US1939760
申请日:1960-04-01
Applicant: GEN ELECTRIC
Inventor: WEBSTER HAROLD F
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46.
公开(公告)号:US3202864A
公开(公告)日:1965-08-24
申请号:US11294961
申请日:1961-05-26
Applicant: BELL TELEPHONE LABOR INC
Inventor: CROWELL MERTON H
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公开(公告)号:US2921215A
公开(公告)日:1960-01-12
申请号:US41014354
申请日:1954-02-15
Applicant: HUGHES AIRCRAFT CO
Inventor: BIRDSALL CHARLES K
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公开(公告)号:US2864965A
公开(公告)日:1958-12-16
申请号:US57638856
申请日:1956-04-05
Applicant: SPERRY RAND CORP
Inventor: WANG CHAO C
IPC: H01J3/02
CPC classification number: H01J3/029
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公开(公告)号:US2811667A
公开(公告)日:1957-10-29
申请号:US47407854
申请日:1954-12-09
Applicant: HUGHES AIRCRAFT CO
Inventor: BREWER GEORGE R
IPC: H01J3/02
CPC classification number: H01J3/029
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公开(公告)号:US2760101A
公开(公告)日:1956-08-21
申请号:US25833451
申请日:1951-11-27
Applicant: CSF
Inventor: DANIEL REVERDIN
IPC: H01J3/02 , H01J23/075 , H01J25/34
CPC classification number: H01J25/34 , H01J3/029 , H01J23/075
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