CONTROLLING LIGHT ATTRIBUTES THROUGH SHIFTS AND ROTATIONS

Devices for controlling attributes of light comprise first arrangements (1) with axes (11), second arrangements (2) shiftable in directions of the axes (11) and rotatable in planes (12) substantially perpendicular to the axes (11), and controllers (3) for in response to the shifts (21) and rotations (22) controlling first and second attributes of the light. The first and second attributes may be attributes of already activated light, such as intensities and colors. The second arrangements (2) may at least partly surround cross sections of the first arrangements (1). The first or second arrangements (1, 2) may comprise terminals (41-48). A current path (34) between at least some of the terminals (41-48) may comprise first and second sections situated at the first and second arrangements (1, 2). One or more of the first and second arrangements (1, 2) may comprise resistive material (31). The controllers (3) may control at least one of the first and second attributes in response to determinations of values of resistances of the current path (34).