Koninklijke Philips Corporation N.v.

Lumileds LLC

Lumileds Holding B.v.

Matthias Heidemann

Hans-Helmut Bechtel

Peter Josef Schmidt

Thomas Diederich

April Dawn Schricker

Jens Meyer

Christoph Martiny

Uwe Mackens

Kim Kevin Mai

Hans Helmut Bechtel

Joost Peter Andre Vogels

Daniel Bernardo Roitman

Mark Melvin Butterworth

Bernd Ackermann

Walter Mayr

Martinus Petrus Joseph Peeters

Detlef Uwe Wiechert

Joerg Meyer

Danielle Russell Chamberlin

Ulrich Hechtfischer

Erik Maria Roeling

Baby-Seriyati Schreinemacher

Marc Salsbury

Oliver Steigelmann

Niels Jeroen Van Der Veen

Rainald Gierth

Joerg Feldmann

Petra Huppertz

Patrick Henricus Johannes Van Stijn

Claudia Goldmann

Joan Liu

Jordy Bernard Margreth Schoenmaekers

Erik Roeling

Oliver Jens Steigelmann

Embodiments include a device having a micro-LED that includes at least two, individually addressable light emitting diodes on a same substrate; a phosphor converter layer disposed on the micro-LED, the phosphor converter layer including phosphor particles having a D50 of greater than 1 &#x3bc;m and less than 10 &#x3bc;m.

Phosphor layer for micro-LED applications

The invention describes a light conversion device having a light converter, which is adapted to convert primary light to converted light, so that a peak emission wavelength of the converted light is in a longer wavelength range than a peak emission wavelength of the primary light. The light conversion device also has a reflective structure coupled to at least a part of a coupling surface of the light converter, where the reflective structure is a narrowband reflector arranged to reflect at least some of the primary light impinging on the reflective structure and to transmit at least some of the converted light impinging on the reflective structure.

Reliable light conversion device for laser-based light sources

Embodiments include a device having a component with a component surface; a phosphor converter body with a phosphor converter body surface facing the component surface; a plurality of particles between and in contact with the component surface and the phosphor converter body surface; and an inorganic coating on and in contact with at least a portion of the particles, at least a portion of the component surface, and at least a portion of the phosphor converter body surface, and a method making such device.

Bonding of phosphor converter emitters

A light emitting device comprises an LED emitting ultraviolet or blue light and one or more phosphors excited by the ultraviolet or blue light and in response emitting longer wavelength light to provide a combined phosphor emission spectrum having an emission peak at wavelength &#x3bb;with a full width at half maximum of FWHM. With &#x3bb;and FWHM expressed in nm, 525 nm&#x2265;&#x3bb;&#x2265;0.039*FWHM+492.7 nm. The light emitting device may be used, for example, to signal the autonomous driving state of an automobile.

Cyan phosphor-converted LED module

A translucent body's first surface is coupled to a top surface of a light converter. The light converter's bottom surface is coupled to a reflective bottom layer. A light coupling structure includes a hole in the reflective bottom layer and at least a slot in the light converter for receiving a light guide, and a light coupling surface for receiving laser light with a laser peak emission wavelength via the light guide. The light coupling surface is arranged so at least 80% of the laser light passing the light coupling surface is received by the translucent body. The translucent body comprises a second surface which is opposite the first surface and is coupled to a reflective top layer for reflecting at least part of the laser light back to the light converter. A peak emission wavelength of the converted light has a longer wavelength than the laser peak emission wavelength.

Light converting device with translucent layer disposed on a light converting layer for converting and scattering laser light

The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18&#x2264;u'&#x2264;0.25 and 0.42&#x2264;v&#x2032;&#x2264;0.54, and wherein the ceramic material comprises a (Y,Gd,Lu, Ce)(Al,Ga)Oceramic material, with 0&#x2264;x&#x2264;0.6, 0&#x2264;y&#x2264;0.5, 0&#x2264;q&#x3c;1 and 0.001&#x2264;z&#x2264;0.06.

White phosphor converted LED with stable flux output versus temperature

The invention provides a lighting device configured to provide red lighting device light, the lighting device comprising: (i) a first light source configured to provide first light source light having a peak wavelength (&#x3bb;ls); (ii) a first red luminescent material configured to absorb at least part of the first light source light and to convert into first red luminescent material light having a first red emission peak wavelength (&#x3bb;m1), the first red luminescent material having an excitation maximum (&#x3bb;x1); (iii) a second red luminescent material configured to absorb at least part of the first light source light and to convert into second red luminescent material light having a second red emission peak wavelength (&#x3bb;m2), the second red luminescent material having a second excitation maximum (&#x3bb;x2); and wherein the first luminescent material and the second luminescent material are Eu2+ based, and wherein &#x3bb;m1&#x3c;&#x3bb;m2, &#x3bb;x1&#x3c;&#x3bb;ls and &#x3bb;x2&#x3e;&#x3bb;ls.

Phosphor converted LED with temperature stable flux and saturated red color point

The invention relates to an illumination system having a light scattering and conversion plate comprising a non-converting but scattering layer and a thinner converting layer. By separating scattering and conversion, the characteristics of the illumination system can greatly be increased.

Light scattering and conversion plate for LEDs

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 light emission device comprising a light emitting element, a wavelength conversion (e.g. phosphor) element, and a filter that reduces Color over Angle (CoA) effects by at least partially reflecting light from the light emitting element that strike the filter at near-normal angles of incidence. In some embodiments, a combined phosphor and filter layer is formed over the LED die. The filter may comprise a dispersion of self-aligning moieties, such as dielectric platelets in a film that is vacuum laminated to the LED structure. Xirallic&#xae; Galaxy Blue pigment, comprising an aluminum oxide core coated on both sides with thin films of SnO, and TiO, and Ronastar&#xae; Blue, comprising Calcium Aluminum Borosilicate and TiOmay provide the dielectric platelets.

Controlling LED emission pattern using optically active materials

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.

A phosphor converted Light Emitting Diode (LED), a lamp and a luminaire are provided. The phosphor converted LEDcomprises a LED, a first luminescent material, a second luminescent materialand a third luminescent material. The LEDemits a first spectral distribution having a first peak wavelength in the blue spectral range. The first luminescent materialabsorbs a portion of the light of the first spectral distribution and converts at least a portion of the absorbed light towards light of a second spectral distribution. The second spectral distribution has a second peak wavelength in the green spectral range. The second luminescent materialabsorbs absorbing a portion of the light of the first spectral distribution and/or a portion of the second spectral distribution. The second luminescent materialconverts at least a portion of the absorbed light towards lights of a third spectral distribution. The third spectral distribution has a third spectral width and has a third peak wavelength. The third luminescent materialabsorbs a portion of the light of at least one of the first spectral distribution, second spectral distribution, and the third spectral distribution. The third luminescent materialconverts at least a portion of the absorbed light towards light of a fourth spectral distribution. The fourth spectral distribution has a fourth spectral width and has a fourth peak wavelength. The third peak wavelength and the fourth peak wavelength are in the orange/red spectral range. The third peak wavelength is smaller than the fourth peak wavelength and the third spectral width is larger than the fourth spectral width.

Phosphor converted light emitting diode, a lamp and a luminaire

The invention relates to a LED assembly comprising a light scattering layer provided between the phosphor layer of the LED and a filter layer.

LED assembly comprising a light scattering layer

The invention relates to a photo-detector comprising a light sensitive element () and a wavelength converter () arranged in front of the light sensitive element, the wavelength converter being configured to convert light of a first wavelength into light of a second wavelength and to direct the light of the second wavelength to the light sensitive element. The advantage is that a stable reading across the entire visible spectrum may be provided.

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Aachen, Germany

Matthias Heidemann