-
1.发明授权Multiple element optical memory structures using fine grain ferroelectric ceramics 失效多晶元件采用精细微电子陶瓷的光学记忆结构
公开(公告)号：US3609002A
公开(公告)日：1971-09-28
申请号：US3609002D
申请日：1969-12-30
Applicant: BELL TELEPHONE LABOR INC
Inventor： FRASER DAVID B , MALDONADO JUAN R , MEITZLER ALLEN H
CPC classification number: G11C13/047 , G02F1/055
Abstract: An optical image storage and display device is obtained by using the electrical polarization property of a plate of fine grain polycrystalline electrooptic ferroelectric, such as lead zirconate-lead titanate. Under the influence of an applied electric field, the polarization of a selected portion of the plate of ferroelectric locally is switched through a predetermined angle of less than or equal to 90*, if and when a scanning light beam or an electron beam is incident upon a photoconductive film deposited on the plate. Readout of the resulting permanent polarization is accomplished by means of another scanning light beam traversing the ferroelectric plate, the plate being located between a polarizer and an analyzer. Thereafter, the polarization of the plate can be switched back through an appropriate angle to its initial state (''''erased''''), by means of another applied electric field.
-
Patent Agency Ranking2.发明授权Method of testing the internal friction of synthetic quartz crystal by the use of two different frequencies of infrared 失效通过使用两种不同频率的红外线测试合成石英晶体的内部摩擦的方法
公开(公告)号：US3351757A
公开(公告)日：1967-11-07
申请号：US43367665
申请日：1965-02-18
Applicant: BELL TELEPHONE LABOR INC , WESTERN ELECTRIC CO
Inventor： FRASER DAVID B , RUDD DAVID W
IPC: G01N21/35
CPC classification number: G01N21/3563
-
3.发明授权Temperature-stable sonic transmission elements comprising crystalline materials containing jahn-teller ions 失效温度稳定的声音传播元件包含含有杰出离子的结晶材料
公开(公告)号：US3296555A
公开(公告)日：1967-01-03
申请号：US40245364
申请日：1964-10-08
Applicant: BELL TELEPHONE LABOR INC
Inventor： FRASER DAVID B , GYORGY ERNST M , LE CRAW ROY C , SCHNETTLER FRANK J
-
4.发明授权Temperature stable ultrasonic delay line composed of sio2 and mgf2 and method of making same 失效由SIO2和MGF2组成的温度稳定的超声延迟线及其制造方法
公开(公告)号：US3536506A
公开(公告)日：1970-10-27
申请号：US3536506D
申请日：1968-08-14
Applicant: BELL TELEPHONE LABOR INC
Inventor： FRASER DAVID B
CPC classification number: C04B33/326 , C04B33/32 , H03H9/36
-
公开(公告)号：US3337439A
公开(公告)日：1967-08-22
申请号：US40968164
申请日：1964-11-09
Applicant: BELL TELEPHONE LABOR INC
Inventor： FRASER DAVID B
IPC: H01L41/22
CPC classification number: H01L41/253 , Y10S65/08
-
公开(公告)号：US3263103A
公开(公告)日：1966-07-26
申请号：US24956863
申请日：1963-01-03
Applicant: BELL TELEPHONE LABOR INC
Inventor： FRASER DAVID B , KING JAMES C
CPC classification number: H03H9/0509 , H03H9/02023
-
-
-
-
-
Search Results
6
records
(took 0.013 seconds)
