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1. 发明公开

EP0911619A3 Methods and apparatus for detecting liquid crystal display parameters using stokes parameters 审中-公开
标题翻译：使用斯托克斯参数确定液晶显示的参数的方法和装置
公开(公告)号：EP0911619A3
公开(公告)日：2000-04-26
申请号：EP98307361.0
申请日：1998-09-11
申请人： Meiryo Tekunika Kabushiki Kaisha , Sato, Susumu
发明人： Sato, Susumu , Zhou, Ying , He, Zhan , Togashi, Yoshihiro
IPC分类号： G01J1/00
CPC分类号： G01J4/04 , G02F1/1309
摘要： A polarizing plate 4 is disposed to polarize light parallel to the X axis of liquid crystal display 3, which may be optionally rotated to a position where the intensity of a light that transmits the liquid crystal display 3 takes an extreme value (maximum or minimum) and an output Ix using a photodetector 6 is measured. The polarizing plate 4 is then disposed to polarize light parallel to the Y axis to thereby measure an output Iy using the photodetector 6. The polarizing plate 4 is then disposed to polarize the light in the direction inclined by 45 degrees between the X and Y axes to thereby measure an output I45 using the photodetector 6. A quarter wavelength plate 5 optionally may be disposed between the polarizing plate 4 and the liquid crystal display 3 such that its axial direction is inclined by 45 degrees from the polarizing direction of the polarizing plate 4 while disposing the polarizing plate 4 so as to polarize light at 45 degrees from both the X and Y axes. In this position, an output Iq45 is measured by the photodetector. Stokes parameters are calculated according to each of the measured values Ix, Iy, I45 and Iq45, and according to the calculated Stokes parameters, the thickness of the liquid crystal layer and/or the twist angle of liquid crystal molecules of the liquid crystal display 3 can be determined. Optionally, the light intensities may be measured by a two-dimensional photodetector and Stokes parameters for a plurality of points on the liquid crystal display may be simultaneously or substantially simultaneously determined.

2. 发明公开

EP0911619A2 Methods and apparatus for detecting liquid crystal display parameters using stokes parameters 审中-公开
标题翻译：使用斯托克斯参数确定液晶显示的参数的方法和装置
公开(公告)号：EP0911619A2
公开(公告)日：1999-04-28
申请号：EP98307361.0
申请日：1998-09-11
申请人： Meiryo Tekunika Kabushiki Kaisha , Sato, Susumu
发明人： Sato, Susumu , Zhou, Ying , He, Zhan , Togashi, Yoshihiro
IPC分类号： G01J1/00
CPC分类号： G01J4/04 , G02F1/1309
摘要： A polarizing plate 4 is disposed to polarize light parallel to the X axis of liquid crystal display 3, which may be optionally rotated to a position where the intensity of a light that transmits the liquid crystal display 3 takes an extreme value (maximum or minimum) and an output Ix using a photodetector 6 is measured. The polarizing plate 4 is then disposed to polarize light parallel to the Y axis to thereby measure an output Iy using the photodetector 6. The polarizing plate 4 is then disposed to polarize the light in the direction inclined by 45 degrees between the X and Y axes to thereby measure an output I45 using the photodetector 6. A quarter wavelength plate 5 optionally may be disposed between the polarizing plate 4 and the liquid crystal display 3 such that its axial direction is inclined by 45 degrees from the polarizing direction of the polarizing plate 4 while disposing the polarizing plate 4 so as to polarize light at 45 degrees from both the X and Y axes. In this position, an output Iq45 is measured by the photodetector. Stokes parameters are calculated according to each of the measured values Ix, Iy, I45 and Iq45, and according to the calculated Stokes parameters, the thickness of the liquid crystal layer and/or the twist angle of liquid crystal molecules of the liquid crystal display 3 can be determined. Optionally, the light intensities may be measured by a two-dimensional photodetector and Stokes parameters for a plurality of points on the liquid crystal display may be simultaneously or substantially simultaneously determined.
摘要翻译：偏振板4被设置为将光平行偏振到液晶显示器3，其可以任选地转动到的位置处光的强度做了X轴传送液晶显示器3呈现极值（最大值或最小值）和使用光检测器6的输出IX是测定。然后，将偏振片4被设置为将光平行偏振于Y轴，从而利用所述光电检测器6的偏振板4随后设置为极化的光在由X轴和Y轴之间的倾斜45度的方向输出IY的量度从而使用光检测器6的输出I45的量度的1/4波长板5可任选地在偏振板4和液晶显示器3的搜索没有其轴向方向45度从偏振片4的偏振方向倾斜之间被布置而偏振板4设置成以45度从两个X和Y轴使光偏振。在该位置，以输出Iq45由光检测器测定。斯托克斯参数计算雅丁到每个测量值IX，IY，I45和Iq45，和雅丁于所计算的斯托克斯参数，液晶层和/或液晶显示器3的液晶分子的扭曲角的厚度的可以是确定性的开采。可选地，光强度可以通过二维光检测器和斯托克斯参数为点的液晶显示器上的多个被测定可以是同时或基本同时确定性开采。

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