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 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).’
    • ‘Tourists, inspired by the Picturesque movement, started coming in the 18th century, peering at sublime mountain scenery through their Claude glasses.’
    • ‘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.’


Named after the French painter Claude Lorrain.


Claude glass