首页>
外国专利>
Click-on spectacles having bifocal lenses
Click-on spectacles having bifocal lenses
展开▼
机译:具有双焦点镜片的点击式眼镜
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to a click-up clip-on spectacles comprising a means for clipping the clip-on spectacles to a spectacle frame and bifocal lenses mounted in the clip-on spectacles. The bifocal lenses consist of two parts mounted one above the other and over the entire width of the spectacle glass, the upper part has a dioptre value of 0 and the lower part has a dioptre value of 1 or more. The upper part of each bifocal spectacle lens has a height of about two thirds of the overall height of the lens and the lower part of each bifocal spectacle lens has a height of roughly one third of the overall height of the spectacle lens. The bifocal lenses may be white or coloured.
展开▼