Polarizer device

A liquid crystal device for producing polarized light comprising:

• a) light source means for producing a light path of natural light;
• b) liquid crystal means having a cholesteric liquid crystal layer in a spherical form, the liquid crystal layer having a Grandjean structure and a cholesteric helix pitch with a defined value, the liquid crystal layer being disposed concentrically about the light source means so that a portion of the light path having a wavelength which is about equal to the defined value of the cholesteric helix pitch is transmitted through the liquid crystal means and another portion of the light path having a wavelength which is about opposite in value to the defined value of the cholesteric helix pitch is rotated and reflected by the liquid crystal means as circular polarized light and
• c) mirror means having a spherical mirror concentrically disposed, substantially about the light source means and between the liquid crystal means and the light source means in a path of the circular polarized light used for reversing a direction of rotation of the circular polarized light so that the polarized light with a reversed direction is transmitted through the liquid crystal means.

An analyzer with selective permeability for light in a certain state of polarization, comprising a spherical cholesteric liquid crystal layer with Grandjean structure disposed in the path of the light.