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11. 发明专利

AT179259T 未知
公开(公告)号：AT179259T
公开(公告)日：1999-05-15
申请号：AT92925047
申请日：1992-10-30
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM J , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/54 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137
摘要： A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains in the liquid crystal cell in an amount that stabilizes the focal conic and twisted planar textures in the absence of a field and permits the liquid crystal to change textures upon the application of a field. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the material is optically clear in a field-OFF condition and light scattering in a field-ON condition. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field.

12. 发明专利

AT178645T 未知
公开(公告)号：AT178645T
公开(公告)日：1999-04-15
申请号：AT92911438
申请日：1992-04-28
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM J , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/38 , C09K19/54 , C09K19/56 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137
摘要： A method of selectively adjusting the intensity of reflection to obtain stable grey scale reflectance of colored light from a light modulating chiral nematic liquid crystal material is disclosed. The method comprises subjecting the material to an electric field pulse of sufficient duration and voltage to cause a first proportion of the chiral nematic material to exhibit a first optical state and a second proportion of the chiral nematic material to exhibit a second optical state, whereby the material will continuously reflect a selected intensity between a maximum and minimum that is proportional to the amount of the material in the first optical state.

13. 发明专利

NO933845L 未知
公开(公告)号：NO933845L
公开(公告)日：1993-12-23
申请号：NO933845
申请日：1993-10-26
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM J , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/38 , C09K19/54 , C09K19/56 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137 , C09K
摘要： A method of selectively adjusting the intensity of reflection to obtain stable grey scale reflectance of colored light from a light modulating chiral nematic liquid crystal material is disclosed. The method comprises subjecting the material to an electric field pulse of sufficient duration and voltage to cause a first proportion of the chiral nematic material to exhibit a first optical state and a second proportion of the chiral nematic material to exhibit a second optical state, whereby the material will continuously reflect a selected intensity between a maximum and minimum that is proportional to the amount of the material in the first optical state.

14. 发明专利

DE102020126897A1 Gesteuerte Teilchenbewegung für die Laser-Speckle-Minderung 未知
公开(公告)号：DE102020126897A1
公开(公告)日：2021-05-06
申请号：DE102020126897
申请日：2020-10-13
申请人： GM GLOBAL TECH OPERATIONS LLC , UNIV KENT STATE OHIO
发明人： HARDEN JOHN , CHIEN LIANG-CHY , CHANG KAI-HAN
IPC分类号： G02B27/48 , G02B27/01 , G02B27/28 , G02F1/13 , G02F1/1337 , G02F1/1343
摘要： Eine optische Vorrichtung (z. B. eine Anzeigevorrichtung) enthält eine kohärente Lichtquelle, die einen kohärenten Lichtstrahl in einem sichtbaren, Ultraviolett- oder Infrarotbereich erzeugt. Der kohärente Lichtstrahl wird auf eine Flüssigkristallkomponente gelenkt. In einem Innenfach sind mehrere Flüssigkristalle und mehrere Mikroteilchen mit einem durchschnittlichen Durchmesser von ≥ etwa 450 nm bis ≤ etwa 20 Mikrometer (µm) angeordnet. Eine elektrische Quelle steht in elektrischer Verbindung mit der ersten und der zweiten Elektrode. Wenn keine Spannung oder kein Strom angelegt ist, zeigt ein gefilterter Lichtstrahl, der von der Flüssigkristallkomponente durchgelassen oder reflektiert wird, einen ersten Speckle-Kontrast ≥ etwa 0,6. Wenn eine Spannung oder ein Strom angelegt ist, wird veranlasst, dass sich die Mikroteilchen bewegen und weist der gefilterte Lichtstrahl einen Speckle-Kontrast auf, der ≤ etwa 0,6 ist. Außerdem wird ein Verfahren zum Mindern von Speckle in einer optischen Vorrichtung mit einer kohärenten Lichtquelle geschaffen.

15. 发明专利

HK1014022A1 Liquid crystalline light modulating device & material 未知
公开(公告)号：HK1014022A1
公开(公告)日：1999-09-17
申请号：HK98115408
申请日：1998-12-24
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM J , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/54 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137 , C09K , G02F
摘要： A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains in the liquid crystal cell in an amount that stabilizes the focal conic and twisted planar textures in the absence of a field and permits the liquid crystal to change textures upon the application of a field. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the material is optically clear in a field-OFF condition and light scattering in a field-ON condition. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field.

16. 发明专利

DE69228874T2 未知
公开(公告)号：DE69228874T2
公开(公告)日：1999-07-29
申请号：DE69228874
申请日：1992-04-28
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/38 , C09K19/54 , C09K19/56 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137
摘要： A method of selectively adjusting the intensity of reflection to obtain stable grey scale reflectance of colored light from a light modulating chiral nematic liquid crystal material is disclosed. The method comprises subjecting the material to an electric field pulse of sufficient duration and voltage to cause a first proportion of the chiral nematic material to exhibit a first optical state and a second proportion of the chiral nematic material to exhibit a second optical state, whereby the material will continuously reflect a selected intensity between a maximum and minimum that is proportional to the amount of the material in the first optical state.

17. 发明专利

DE69229003D1 未知
公开(公告)号：DE69229003D1
公开(公告)日：1999-05-27
申请号：DE69229003
申请日：1992-10-30
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/54 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137
摘要： A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains in the liquid crystal cell in an amount that stabilizes the focal conic and twisted planar textures in the absence of a field and permits the liquid crystal to change textures upon the application of a field. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the material is optically clear in a field-OFF condition and light scattering in a field-ON condition. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field.

18. 发明专利

HK1014023A1 Crystalline light modulating device and material 未知
公开(公告)号：HK1014023A1
公开(公告)日：1999-09-17
申请号：HK98115414
申请日：1998-12-24
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM J , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/38 , C09K19/54 , C09K19/56 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137 , C09K , G02F
摘要： A method of selectively adjusting the intensity of reflection to obtain stable grey scale reflectance of colored light from a light modulating chiral nematic liquid crystal material is disclosed. The method comprises subjecting the material to an electric field pulse of sufficient duration and voltage to cause a first proportion of the chiral nematic material to exhibit a first optical state and a second proportion of the chiral nematic material to exhibit a second optical state, whereby the material will continuously reflect a selected intensity between a maximum and minimum that is proportional to the amount of the material in the first optical state.

19. 发明专利

DE69228874D1 未知
公开(公告)号：DE69228874D1
公开(公告)日：1999-05-12
申请号：DE69228874
申请日：1992-04-28
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/38 , C09K19/54 , C09K19/56 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137
摘要： A method of selectively adjusting the intensity of reflection to obtain stable grey scale reflectance of colored light from a light modulating chiral nematic liquid crystal material is disclosed. The method comprises subjecting the material to an electric field pulse of sufficient duration and voltage to cause a first proportion of the chiral nematic material to exhibit a first optical state and a second proportion of the chiral nematic material to exhibit a second optical state, whereby the material will continuously reflect a selected intensity between a maximum and minimum that is proportional to the amount of the material in the first optical state.

20. 发明专利

NO933845A 未知
公开(公告)号：NO933845A
公开(公告)日：1993-12-23
申请号：NO933845
申请日：1993-10-26
申请人： UNIV KENT STATE OHIO
发明人： DOANE WILLIAM J , YANG DENG-KE , CHIEN LIANG-CHY
IPC分类号： C09K19/02 , C09K19/38 , C09K19/54 , C09K19/56 , C09K19/58 , G02F1/01 , G02F1/1333 , G02F1/1334 , G02F1/137 , C09K
CPC分类号： G02F1/13718 , C09K19/02 , C09K19/542 , C09K19/544 , C09K19/586 , G02F1/0131 , G02F2001/13345 , G02F2001/13347 , G02F2001/13775

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