This invention solves the technical problem of compensating for the
angular dependence of the contrast in optical devices comprising liquid
crystal displays (LC optical light shutters, which operate on the
principle of electrically controlled optical birefringence), with the aid
of a compensation layer exhibiting optically negative birefringence,
which enables the angular compensation of the LC layer birefringence in
the state in which the LC molecules are homeotropically aligned (typical
optically positive birefringence). The process for the manufacture of the
optically negatively birefringent compensation layer is devised on the
controlled spontaneous deformation of the polymer molecules during the
polymerization procedure. The manufacturing process is feasible by the
employment of known and well-controllable technical procedures, and
enables the mass production of compensation layers. The invention solves
the problem of manufacturing a compensation layer exhibiting the required
optically negative birefringence, as well as the
construction/manufacturing of the optical light shutter, which utilizes
such a compensation film.