Spectacle lenses to reduce discomfort from aphakia and...

Details Spectacle lenses to reduce discomfort from aphakia and... Spectacle lenses to reduce discomfort from aphakia and...

G - Physics

02

C

88/38, 49/88

G02C 7/10 (2006.01) C03C 4/06 (2006.01)

Patent

CA 1145169

Abstract of the Disclosure This invention is concerned with producing glasses suitable for use as spectacle lenses for aphakics or for persons subject to photoretinitis or retinitis pigmentosa. The glasses exhibit near-zero transmittance of radiations having wavelengths shorter than a selected cutoff wavelength ranging between about 440-550 nm and the transmittance of the reminder of the visible spectrum is adjusted through the glass demonstrating photochromic behavior. The inventive method contemplates exposing photochromic glass within a narrowly-defined composition range to a strongly-reducing atmosphere at temperatures between about 350°-520°C for a period of time of at least 12 hours to develop an integral colored surface layer on the glass.

374858

Affiliated with

Also associated with

Rating

Spectacle lenses to reduce discomfort from aphakia and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spectacle lenses to reduce discomfort from aphakia and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectacle lenses to reduce discomfort from aphakia and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-995862