Koninklijke Philips Corporation N.v.

Lumileds LLC

Joost Peter Andre Vogels

April Dawn Schricker

Uwe Mackens

Kim Kevin Mai

Hans-Helmut Bechtel

Grigoriy Basin

Aldegonda Lucia Weijers

Matthias Heidemann

Thomas Diederich

Karl Adriaan Zijtveld

Johan Lub

Rene Theodorus Wegh

Wilhelmus Peter Martinus Nijssen

A ceramic green wavelength conversion element () is coated with a red wavelength conversion material () and placed above a blue light emitting element () such that the ceramic element () is attached to the light emitting element (), thereby providing an efficient thermal coupling from the red and green converters () to the light emitting element () and its associated heat sink. To protect the red converter coating () from the effects of subsequent processes, a sacrificial clear coating () is created above the red converter element (). This clear coating () may be provided as a discrete layer of clear material, or it may be produced by allowing the red converters to settle to the bottom of its suspension material, thereby forming a converter-free upper layer that can be subjected to the subsequent fabrication processes.

LED with ceramic green phosphor and protected red phosphor layer

A method according to embodiments of the invention includes providing a plurality of LEDs attached to a mount. A filter is attached to at least one of the plurality of LEDs. A protective layer is formed over the filter. A reflective layer is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.

Light emitting device including a filter and a protective layer

A method according to embodiments of the invention includes providing a plurality of LEDs () attached to a mount (). A filter () is attached to at least one of the plurality of LEDs. A protective layer () is formed over the filter. A reflective layer () is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.

The invention pertains to an isosorbide derivative having at least one polymerizable group, characterized in that the isosorbide derivative further comprises at least one photo-convertible group for adjusting the helical twisting power of the isosorbide derivative. According to a preferred embodiment the isosorbide has the formula wherein

Isosorbide derivatives

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Leende, Netherlands

Joost Peter Andre Vogels