The present invention relates to photochromic materials that include certain indeno-fused naphthopyrans. The indeno-fused naphthopyrans have an amino group (e.g., a piperidino or morpholino group) bonded to the 6-position and hydrogen or a halo group (e.g., fluoro) bonded to the 11-position thereof. The photochromic materials of the present invention can have a closed-form electromagnetic radiation absorption spectrum that is shifted to longer wavelengths (e.g., wavelengths of greater than 390 nm), relative to comparable photochromic materials. The present invention also relates to optical elements, such as eyeglasses, that include the photochromic materials of the present invention.
本发明涉及包括某些
茚并
萘并
吡喃的光致变色材料。这些
茚并融合
萘并
吡喃的 6 位键上有一个
氨基(如
哌啶或吗啉基),11 位键上有氢或卤基(如
氟)。与同类光致变色材料相比,本发明的光致变色材料的封闭式电磁辐射吸收光谱可以偏移到更长的波长(例如波长大于 390 纳米)。本发明还涉及包括本发明光致变色材料的光学元件,如眼镜。