Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1999-07-23
2000-11-07
Manuel, George
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
G02C 710
Patent
active
061426261
ABSTRACT:
The chromatic vision correction resin glasses with reduced concave reflection is manufactured according to the following steps. First, the resin eyeglass is dyed chemically to meet the requirements of 4 sorts (21 kinds) of chromatogram correction curves. Second, the convex of resin eyeglass is coated in a vacuum environment with a CF film, the thickness of which should be controlled to make the light permeability of the dyed resin eyeglass decrease about 10% to lower the reflection of its concave. Third, in order to reduce concave reflection further, it is practicable to coat the concave with permeance promotion film by evaporation. This technique can eliminate the visual disturbance of eyes imaging which occurs in the surrounding of intensive light. As a result, the effect of chromatic vision correction is improved. Meanwhile, it also can diminish the production cost, increase productivity, so that it not only achieves the aim of chromatic vision correction, but also has the effect of eyes' protection.
REFERENCES:
patent: 4268134 (1981-05-01), Gulati et al.
patent: 4878748 (1989-11-01), Johansen et al.
Lu Weidong
Lu Zhong
Manuel George
University of Science and Technology of China
LandOfFree
Chromatic vision correction resin glasses with reduced concave r does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chromatic vision correction resin glasses with reduced concave r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromatic vision correction resin glasses with reduced concave r will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1634577