Comprise the Ophthalmoligic instrument of the photochromic material of the Pi-conjugated systems with expansion

Comprise the Ophthalmoligic instrument of the photochromic material of the Pi-conjugated systems with expansion

  • CN 101,203,582 B
  • Filed: 04/03/2006
  • Issued: 08/19/2015
  • Est. Priority Date: 04/08/2005
  • Status: Active Grant
First Claim
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1. what comprise at least one photochromic material is selected from SCL, hard contact eyeglass, ophthalmic lens, cover type eyeglass, the Ophthalmoligic instrument be positioned on eyes or eyes of ocular inserts and optical inserts, described photochromic material comprises indeno-fused naphthopyran, wherein said indeno-fused naphthopyran is included in the group of the Pi-conjugated systems of the expansion indeno-fused naphthopyran of its 11-position bonding, condition be if the 11-position bonding of indeno-fused naphthopyran group with together form condensed group at the group of the 10-position of indeno-fused naphthopyran or 12-position bonding, so described condensed group is not benzo-fused group, wherein the 13-position of indeno-fused naphthopyran is not substituted, by monosubstituted or two replacements, condition is that so substituting group can not form norcamphyl together if the 13-position of indeno-fused naphthopyran is by two replacements.

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