OPTICAL SYSTEM FOR IMPROVING VISUAL PERFORMANCE AT LOW ILLUMINATION LEVELS

摘要

The invention relates to an optical system which allows to improve visual performances in conditions of low lighting level, particularly at night, for ALL SUBJECTS, whether they are emmetropes or ametropes, and regardless of their visual acuity. The system is comprised of two optical glasses which either are mounted on spectacles or on an additional mounting. These two glasses have a correcting power of 0.25 negative dioptry; they are tinted in yellow (S+/-550 nm) [the coloration may also be degraded downwards of the glass]; they are treated for multilayer antireflections on both sides. Due to a prismatic effect which is practically negligeable, the system may be proposed with a standard interpupillary deviation.