Optical switch devices

A security device comprising:

• an array of lenses;
• and
• a plurality of first and second segments disposed under the array of lenses, the first segments corresponding to portions of a first icon and a first background, and the second segments corresponding to portions of a second icon and a second background,
• wherein at a first viewing angle, the array of lenses presents for viewing the first icon and the first background without presenting the second icon for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second icon and the second background without presenting the first icon for viewing,
• wherein the second background at the second viewing angle appears the same in outer shape, size, and brightness as the first background at the first viewing angle,
• wherein individual ones of the first and second segments comprise specular reflecting features, transmissive features, or diffusing features,
• wherein for the first and second segments,
• the specular reflecting or the transmissive features define the first and second icons, and the diffusing features define the first and second backgrounds, or
• the diffusing features define the first and second icons, and the specular reflecting or transmissive features define the first and second backgrounds.