Definition of Claude glass in English:

Claude glass

(also Claude Lorrain glass)


  • A convex dark or coloured glass that reflects a small image in subdued colours, used by landscape painters to show the tonal values of a scene.

    • ‘The purpose of the Claude glass, which Corot used, was to help artists distinguish brightness contrast in the object depicted to the exclusion of other aspects of visual experience.’
    • ‘Tourists, inspired by the Picturesque movement, started coming in the 18th century, peering at sublime mountain scenery through their Claude glasses.’
    • ‘The more portable cameras were undoubtedly used, along with Claude glasses, by the amateur.’
    • ‘The must-have for 18th-century tourists and amateur artists was a tiny tinted convex mirror called a Claude glass (named after 17th-century landscape painter Claude Lorrain).’


Named after the French painter Claude Lorrain.


Claude glass