| 摘要 |
<p>A method of improving sight image and a sight diaphragm filter specially adapted for the method. The method is to wear the sight diaphragm filter for human eyes, which excludes the rays apart from the optic axis and passes the paraxial rays, so as to avoid the spherical aberration and achieve the object of improving sight image. The sight diaphragm filter specially adapted for the method has two pieces of sight diaphragms, on each of which one or more sight diaphragm through holes are provided. The structure of the through holes may be a regular row and column lattice. Or, one through hole can be provided on an opaque and soft diaphragm, so that the diaphragm can be worn on the cornea as a piece of contact lenses.</p> |
