Koninklijke Philips Corporation N.V.

Nicolas Gerardus Antonius Peeters

Martinus Petrus Joseph Peeters

Christoph Gerard August Hoelen

Ramon Pascal Van Gorkom

Rene Theodorus Wegh

Coen Theodorus Hubertus Fransiscus Liedenbaum

Karl-Wilhelm Vogt

Matthijs Hendrik Keuper

Martijn Henri Richard Lankhorst

Markus Pieper

Chantal Sweegers

René Jan Hendriks

Hendrikus Albertus Maria Van Dulmen

Jan Willem Frederik Dorleijn

The invention relates to a color-tunable illumination system (), to a lamp and to a luminaire. The color-tunable illumination system comprises a light source () emitting light of a first predefined color (B), and comprises a luminescent material () for converting light of the first predefined color into light of a second predefined color (A). The color-tunable illumination system further comprises shielding means () arranged for preventing at least part of the light emitted by the light source to impinge on the luminescent material. The light source, the luminescent material and/or the shielding means are changeable from a first situation to a second situation. In the first situation the color-tunable illumination system is arranged for shielding at least part of the luminescent material against impinging light of the first predefined color. In the second situation the color-tunable illumination system is arranged for shielding less of the luminescent material to the light of the first predefined color emitted by the light source compared to the first situation. The effect of the measures according to the invention is that the shielding means, luminescent material and/or the light source determine an amount of light of the second predefined color emitted by the color-tunable illumination system which determines a color of the color-tunable illumination system.

Color-tunable illumination system, lamp and luminaire

The invention relates to a lamp comprising a lamp bulb () and a lamp base (), which lamp base () comprises a projection () located in a substantially central position of the lamp base () and extending in a direction away from the lamp bulb (), at least one lock-engaging portion (), and a substantially flat base surface () opposed to the lamp bulb () and surrounding the projection (), characterized in that the at least one lock-engaging portion () is located on the edge of the base surface () surrounding the projection () remote from the central projection. The invention also relates to a lampholder () for cooperation with the lamp () according the invention, the lampholder () comprising an aperture () in a substantially central position of the lampholder (), at least one counter lock-engaging portion (), and a substantially flat holder surface () surrounding the aperture, characterized in that the at least one counter lock-engaging portion () is located on the edge of the holder surface () surrounding the aperture () remote from the central aperture ().

Lamp and lampholder with peripheral locking means

The electric discharge lamp comprises a shell ( ) having an axis ( ), which shell accommodates a starter ( ) and pin-shaped contacts ( ) extending in an axial direction. A cover ( ), which is coupled to a discharge vessel ( ), is attached to the shell ( ). Pairs ( ) of current conductors ( ) emanate from the discharge vessel ( ). The conductors ( ) of each pair ( ) are clamped, in a direction transverse to the axis ( ), by first and second ( ) forked contact elements, which are secured in the shell ( ) and are directed towards the cover ( ). The lamp is of a simple construction, which can be readily produced.

Electric discharge lamp with forked contacts

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Eindhoven, Netherlands

Nicolas Gerardus Antonius Peeters