| 发明名称 | Phase modulator containing a liquid crystal having a helical structure | ||
| 摘要 | An unpolarized light beam phase modulator emitting in a given wavelength range comprises at least one cell containing a liquid crystal having a helical structure and means for applying a voltage to said cell, said liquid crystal having a torsion elastic constant greater than its twisting elastic constant so as to ensure continuous stable behavior voltage-wise, said liquid crystal having a sufficient number of turns and in which the axis of the turns is in the light-propagation direction, making it possible to obtain an optical effect generated by the liquid crystal on the electrical field that is identical regardless of the direction of this electrical field, said cell being transparent in said wavelength range. | ||
| 申请公布号 | US8797497(B2) | 申请公布日期 | 2014.08.05 |
| 申请号 | US201113581461 | 申请日期 | 2011.03.07 |
| 申请人 | Commissariat a l'Energie Atomique et aux Energies | 发明人 | Rossini Umberto;Mourey Bruno |
| 分类号 | C09K19/02;G02F1/13 | 主分类号 | C09K19/02 |
| 代理机构 | Baker Hostetler LLP | 代理人 | Baker Hostetler LLP |
| 主权项 | 1. An unpolarized light beam phase modulator emitting in a given wavelength range, comprising: at least one cell containing a liquid crystal having a helical structure and means for applying a voltage to said cell, said liquid crystal having a torsion elastic constant greater than a twisting elastic constant so as to ensure continuous stable behavior voltage-wise, said liquid crystal having a sufficient number of turns and in which the axis of the turns is in the light-propagation direction, making it possible to obtain an optical effect generated by the liquid crystal on the electrical field that is identical regardless of the direction of this electrical field, said cell being transparent in said wavelength range. | ||
| 地址 | Paris FR | ||