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US 2004/0105246 A1Published application
Control element
OwnerHeiko Glienicke, Thomas Ofenhitzerinventors
Life of this patent
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Abstract
It is proposed to divide a preferably stationary optical light guide into two regions by an annular slot into which an operating panel projects. The inner region is to be visible to a user and represents a corona, which has an illuminated night design. The outer region is covered by the panel and illuminates the scale that includes various symbols and surrounds the rotary knob.
Claims15
A control element having a combined scale and corona illumination, wherein the scale is a part of a panel that is designed to work together with the control element, the control element comprising:
- an optical light guide that includes two parts, which are partially separated by an annular slot, such that parts of the panel can engage or project into the slot;
- a light rotor that extends towards the optical light guide to a height necessary for light transport;
- and
- a light source located below the light rotor.
1 more element
A control element comprising:
- a rotary knob;
- a corona substantially circumscribing the rotary knob, the corona being adapted to emit light therefrom;
- a scale substantially circumscribing the corona and the rotary knob, the scale being adapted to emit light therefrom;
- an optical light guide having an annular slot provided therein, the annular slot being formed to receive a projection extending from the scale;
- the optical light guide directing light towards the scale and the corona;
- and
- a light rotor that directs light from a light source towards the optical light guide.
4 more elements
Dependencies are inferred from the claim text.