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1. 发明专利

DE1900920A1 未知
公开(公告)号：DE1900920A1
公开(公告)日：1969-07-31
申请号：DE1900920
申请日：1969-01-09
申请人： IBM
发明人： FLEISHER HAROLD , JEROME HARRIS THOMAS
IPC分类号： G02F1/03 , G02F3/00 , G11C13/04 , G11C15/00 , G11C17/00 , H01J39/12
摘要： 1,199,530. Read-only stores. INTERNATIONAL BUSINESS MACHINES CORP. 3 Dec., 1968 [12 Jan., 1968], No. 57224/68. Heading G4A. [Also in Divisions G2, H1 and H4] An optical AND gate comprises an electrooptic crystal 16, such as KDP, and a transparent photocathode 14 having transparent conductive coatings 20 and 22 disposed as shown in Fig. 1 within a transparent glass envelope 12. In operation, with switch 48 closed, a light beam 42 which may contain an image, such as a photographic memory containing fields of binary bits represented by light and dark spots, is imaged on to photocathode 14, the emitted electrons from which are accelerated by the potential gradient to crystal 16 e.g. light on area 44 causes area 28 on crystal 16 to assume an electron charge thereby developing a potential across the crystal in that area. To read-out the stored electron image, switch 48 is opened, and a plane polarized light beam 26 from digital deflector 24 is scanned across the crystal 16 and directed via beam splitter 30 and analyser 32 to photo-multiplier tube 36 an output voltage being developed across resistor 38 whenever the beam 26 passes through a charged area of crystal 16 which causes the state of polarization of beam 26 to be changed. An electrical signal proportional to the intensity of beam 42 is thus obtained whenever light in area 44 coincides with light on area 28. The stored charge on crystal 16 is erased prior to the next imaging operation by using an electron flood gun 18. The read-out device may function to provide random accessing of information stored on a memory surface such as a photographic film, Fig. 2 (not shown).

2. 发明专利

DE1514016A1 未知
公开(公告)号：DE1514016A1
公开(公告)日：1969-04-24
申请号：DEJ0028293
申请日：1965-06-05
申请人： IBM
发明人： JEROME HARRIS THOMAS
IPC分类号： G02F1/31

3. 发明专利

DE1616220B1 未知
公开(公告)号：DE1616220B1
公开(公告)日：1972-05-31
申请号：DEI0035423
申请日：1968-01-05
申请人： IBM
发明人： JEROME HARRIS THOMAS
IPC分类号： G01J3/12 , G02B27/28 , G02F1/01 , G02F1/31 , G02F2/00 , G02F2/02 , H04J14/02 , H04B9/00

4. 发明专利

DE1547383A1 未知
公开(公告)号：DE1547383A1
公开(公告)日：1970-01-22
申请号：DE1547383
申请日：1966-12-24
申请人： IBM
发明人： JEROME HARRIS THOMAS
IPC分类号： A47G27/02 , G02F1/31 , H01S3/101 , G02F1/26
摘要： 1,111,058. Lasers. INTERNATIONAL BUSINESS MACHINES CORPORATION. 2 Nov., 1966 [29 Dec., 1965], No. 49049/66. Heading H1C. [Also in Division G2] An optical scanner providing a circular scan comprises a source 10 of linearly polarized light, Fig. 1, a polarization rotator 26, and an analyser 50 receiving the rotator output and passing only that filament 58 of the polarized light beam which is polarized in a given direction, the rotator being electrically controlled so as to produce a variable polarization rotation and thus enable different light filaments to become effective in turn along the scanning path. In the arrangement shown the linear polarization 62 of each light filament emitted by a laser light source is tangential to a circumference about the geometric axis, and the rotator comprises a quarter wave plate 28 and two vertically-spaced and independently energized electro-optic crystals 30, 32 with transparent electrodes 34, 36, 42, 44. The use of two electro-optic crystals is necessary to enable the analyser 50 to differentiate between diametrically-opposed light filaments which have parallel linear polarizations. The light source, Fig. 2, comprises a frusto-conical bi-refringent crystal having its optic axis 16 parallel to the geometric axis 18, the centre of the crystal being formed with two conical cavities 20, 24. This crystal totally reflects linearly polarized ordinary rays 58 of incident light 54 and disperses the extraordinary rays 56. The reflecting laser crystal and a partially transmitting mirror 52 together form the laser resonator. In an alternative arrangement, Fig. 4, a laser comprises a right circular cylindrical crystal rod 80 having its optic axis 84 inclined at 60 degrees to the geometric axis 82, the resonator being formed by separate mirrors 86, 88. As all the light emitted by the crystal is linearly polarized in the same direction, selection of a required light filament after rotation by a rotator 90 comprising an electro-optic crystal 92 and a quarter wave plate 102 is effected by an analyser formed of several analyser segments 106-118 radially oriented with respect to the geometric axis. The crystal 92 may be divided. In a modification laser action is not used, the crystal of Fig. 1, being illuminated from a narrow-band light source 72, Fig. 3, through a collimating lens 74 and a beam splitter 76. End illumination of the crystal 80 is used in the modified Fig. 4 arrangement, Fig. 5 (not shown). In both cases the resonator components are omitted.

5. 发明专利

DE1564156A1 未知
公开(公告)号：DE1564156A1
公开(公告)日：1970-03-05
申请号：DE1564156
申请日：1966-06-07
申请人： IBM
发明人： JEROME HARRIS THOMAS , FLEISHER HAROLD , SHAPIRO EUGENE
IPC分类号： G02F1/29 , H05H1/00 , G02F1/28
摘要： 1,142,957. Light deflectors. INTERNATIONAL BUSINESS MACHINES CORP. 2 June, 1966 [7 June, 1965], No. 24606/66. Heading H4F. A collimated beam of monochromatic preferably circularly polarized radiation 4, Fig. 1, is deflected by directing, e.g. by means of mirror M1, the beam along a path through an ionizable gas in a container, and by creating a magnetic field along the path having an intensity varying progressively across the plane perpendicular to the path by means of polepieces 12 and 14 of electromagnet 16, the gas being excited by means of a radio frequency electric field applied by means of conductive rings 6 and 8. Since the dispersion characteristic of the gas or plasma is a function of the magnetic field, variation in the strength of the magnetic field varies the refractive index of the gas and controlled angular deflection is accomplished. The ionizable gas may comprise Helium, Argon, Krypton or Xenon and is sealed under pressure in glass or quartz cylindrical container 2. The radiation beam may be emitted from a microwave, millimeter or optical maser. The polepieces of electromagnet 16 are shaped to provide a magnetic field with constant gradient between the upper and lower surfaces of container 2. It is arranged that the electrons gyrate in the ionized gas in the same sense as the beam is circularly polarized. If the incident beam is plane polarized its plane of polarization is rotated after passing through the gas. The actual deflection in the gas takes place due to the fact that each point on the wavefront travels at a different velocity. The deflection may be controlled by varying the magnetic field strength and/or the electron density. Solid bismuth which exhibits cyclotron frequency phenomena and is transparent to long wavelength radiation may be used to increase the electron densities.

6. 发明专利

DE1811154A1 未知
公开(公告)号：DE1811154A1
公开(公告)日：1969-08-07
申请号：DE1811154
申请日：1968-11-27
申请人： IBM
发明人： JEROME HARRIS THOMAS
IPC分类号： G06F3/038 , G06F3/042 , G06F3/147 , G09G3/00

7. 发明专利

DE1472142A1 未知
公开(公告)号：DE1472142A1
公开(公告)日：1969-01-09
申请号：DE1472142
申请日：1965-07-23
申请人： IBM
发明人： JEROME HARRIS THOMAS , WOLFGANG KULCKE WERNER , ERHARD MAX DR
IPC分类号： G02F1/31 , H03K17/78

8. 发明专利

DE1958466A1 未知
公开(公告)号：DE1958466A1
公开(公告)日：1970-06-11
申请号：DE1958466
申请日：1969-11-21
申请人： IBM
发明人： JEROME HARRIS THOMAS , MAX ERHARD
IPC分类号： G02F1/01 , G02F1/03 , G02F1/40

9. 发明专利

DE1499723A1 未知
公开(公告)号：DE1499723A1
公开(公告)日：1970-04-30
申请号：DE1499723
申请日：1966-10-11
申请人： IBM DEUTSCHLAND
发明人： JEROME HARRIS THOMAS , WOLFGANG KULCKE WERNER , MAX KOSANKE KURT , MAX ERHARD
IPC分类号： G11C13/04 , G11C17/00 , H03K17/78 , G11B11/10
摘要： 1,104,163. Optical information storage system. INTERNATIONAL BUSINESS MACHINES CORPORATION. 11 Oct., 1966 [14 Jan., 1966], No. 45364/66. Heading G4A. An optical information storage system includes scanning means responsive to binary address signals for illuminating a selected area of an optical information record by deflecting a light beam appropriately over the record, and monitoring means responsive to the parity of each address applied to the scanning means for subtracting the emanation from the selected area of the record from that from another similar area of the record to provide an information indicating output. High intensity light from a monochromatic light source 10 is passed through a collimating lens 12, through a linear polarizer and through an aperture in a plate to a first unit 14 of a light deflection unit 14 including a plurality of deflection stages. Each stage comprises a birefringent means (22, Fig. 2, not shown) preceded by an electro optic element which provides an output beam polarized either in a first direction or a second direction at 90 degrees to the first, the birefringent means allowing one beam to pass through normally but causing the second beam to be diffracted and to leave the means at a position spatially separated from the first beam. Deflection stages are arranged in increasing order of deflection by a factor of two, the unit 14 causing deflections in the x position being followed by a unit 16 causing deflections in the y direction. An optical memory is then read by the light beam. The light beam is directed to the appropriate spot in the optical memory by X position address and Y position address signals which are converted into X and Y switch addresses by exclusive OR circuits 24, 28, an address of 111 requiring a diffraction of 7 positions thus requiring a switch address of 001 since the operation of the first electro-optic element will leave the beam polarized such that all succeeding birefringent means will cause diffraction of the beam. Examination of the switch addresses shows that the parity of the signal indicates from which quadrant of the memory the light beam will emerge, e.g. if the y parity is odd the light beam emerges from quadrant 1 or 2, if even from 3 or 4. Parity check circuits 30, 32 emit signals X1, X2, Y1, Y2 (X1, Y1 for even parity) which are applied to AND gates 50, 52, 54, 56 which indicate which quadrant the light beam is in. The four quadrants are examined by photo-cells 36, 38, 40, 42, one to each quadrant with the outputs of 38, 40, examining quadrants 2, 3 being applied to one difference amplifier 44 and the outputs of the other photo-cells being applied to a difference amplifier 46. It is assumed that the quadrants 1, 4 have the same noise signal produced by extraneous light, and similarly for quadrants 2, 3 so that the difference amplifier acts to subtract the signal due to noise from the data output signal. The resulting signal is then applied via inverters I, if necessary, AND gates 58, 60, 62, 64 and OR gates to the output.

10. 发明专利

DE1547380A1 未知
公开(公告)号：DE1547380A1
公开(公告)日：1970-01-22
申请号：DE1547380
申请日：1966-12-22
申请人： IBM
发明人： JEROME HARRIS THOMAS
IPC分类号： G02B27/28 , G02F1/31 , G02F1/26
摘要： 1,124,139. Light deflectors. INTERNATIONAL BUSINESS MACHINES CORP. 1 Nov., 1966 [27 Dec., 1965], No. 48811/66. Heading H4F. [Also in Division G2] A light deflector comprises a birefringent element 43, 65 or 66 immersed in a medium 23 having a refractive index which matches the higher index of the birefringent element so that light polarized in a direction parallel to one axis of the element is transmitted while light polarized in a perpendicular direction is reflected; a reflected beam is aligned with the original direction of the light beam by means of an alignment plate 45, 67, or 68 which has a refractive index equal to or less than that of the lower index of the birefringent element. As shown, a series of birefringent elements and alignment plates is immersed in a fluid bath which may be oil or chlorinated diphenyl. The direction of polarization of light incident on each birefringent element is selected by means of a Kerr cell 31, 51, 53 arranged immediately before the associated birefringent element. A beam of light from a laser 13 is polarized and then passes through a window 25 in the chamber 21 containing the fluid bath 23 to the first Kerr cell. The emergent beam passes through a second window 29 in the chamber at a selected one of eight positions.

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