Koninklijke Philips Corporation N.v.

Chantal Sweegers

Christoph Gerard August Hoelen

Rene Theodorus Wegh

Martijn Henri Richard Lankhorst

Martinus Petrus Joseph Peeters

Ramon Pascal Van Gorkom

Coen Theodorus Hubertus Fransiscus Liedenbaum

Matthijs Hendrik Keuper

Johan Leopold Victorina Hendrix

Thomas G Steere

Rene Jan Hendriks

Martijn H R Lankhorst

René Jan Hendriks

Wilhelmus Johannes Jacobus Welters

Nicolas Gerardus Antonius Peeters

Godfried Cornelius Gerardus Maria Manders

Paulus Adrianus Hypolytus Jozef Huijbrechts

Gerardus Marinus Josephus Francis Luijks

Christoph G A Hoelen

René J Hendriks

A discharge lamp includes a body portion having inner and outer body walls and first and second ends. The inner body wall defines at least part of a cavity located between the first and second ends. First and second end parts have inner end-part and outer end-part walls and a hole extending between the inner end-part wall and the outer end-part wall. The first and second end parts are each located, at least in part, within the cavity and separate from each other so as to maintain a gas under pressure. First and second electrodes are included in the cavity. An antenna has first and second antenna ends and is formed on the outer body wall of the body portion and the outer end-part wall of at least one of the first and second end parts. The antenna is not directly connected to the first and second electrodes.

High-pressure sodium vapor discharge lamp with hybrid antenna

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 color-tunable illumination system () and a luminaire. The color-tunable illumination system comprises a first light source comprising a first set of light emitting diodes (), and a second light source comprising a second set of light emitting diodes (). Both the first and second light source emit light of substantially a first predefined color into a light mixing chamber (). The light mixing chamber further comprises a first luminescent material () converting light of the first predefined color into light of a second predefined color. The first light source is positioned with respect to the first luminescent material for illuminating the first luminescent material with a first flux of light being part of the light emitted by the first light source into the light mixing chamber. The second light source is positioned with respect to the first luminescent material for illuminating the first luminescent material with a second flux of light being part of the light emitted by the second light source into the light mixing chamber. The first flux is different from the second flux. The effect of the measures according to the invention is that a change in the intensity of the light emitted by the first light source relative to the intensity of the light emitted by the second light source results in a change of the color emitted by the color-tunable illumination system.

Color-tunable illumination system

Growing community of inventors

Eindhoven, Netherlands

Chantal Sweegers