angle compensating film therebetween in such a manner that optical axes of the polarizing plates cross an aligning treatment direction of the homogeneous liquid crystal cell at 45°, whereby incident light can be transmitted through the homogeneous liquid crystal cell in an elliptically polarized state...
Digital control is provided by a computer system 154 having a microprocessor 156. An analog to digital converter (ADC) 158 and a nonvolatile memory (NVM) which may be an electrically erasable programmable read only memory (EEPROM) 160 are associated with the microprocessor 156. The microprocessor...
One of the objects of the present invention is to provide a system of this type so organized as to be particularly adaptable to the entrance-exit type of manipulation as well as adaptable to automatic control by train presence, and to have as much of the apparatus as possible common to bot...
polarized before propagating through the electrically induced half-wave plate device. These beams may be generated by use of a linearly polarized laser. When the half-wave plate 28 is not activated (no field applied) the emerging beam is P polarized, as indicated by the solid incident beam ...