Signify Holding B.v.

Koninklijke Philips Corporation N.v.

Philips Lighting Holding B.v.

Robert Van Asselt

Rifat Ata Mustafa Hikmet

Ties Van Bommel

Olexandr Valentynovych Vdovin

Dominique Maria Bruls

Hugo Johan Cornelissen

Floris Maria Hermansz Crompvoets

Martinus Petrus Joseph Peeters

Fetze Pijlman

Hendrik Jan Eggink

Peter Tjin Sjoe Kong Tsang

Maarten Van Lierop

Dirk Jan Broer

Reinhold Elferich

Bernd Ackermann

Christoph Gerard August Hoelen

Rene Theodorus Wegh

Hans Nikol

Joris Jan Vrehen

Georges Marie Calon

Mark Johannes Antonius Verhoeven

Thomas J&uuml;stel

Marcellus Jacobus Johannes Van Der Lubbe

Daniël Anton Benoy

Arno Vredenborg

Wilhelmus Johannes Hendricus Ansems

Huibert Wouters

Chris Van Den Eerenbeemd

Laurens Bax

Gerardus Franciscus Cornelis Maria Lijten

René Theodorus Weigh

Christoph Hoelen

The invention provides a light generating system () comprising a light generating device (), a luminescent material layer (), and optics (), wherein: (I) the light generating device () is configured to generate polarized laser radiation (); (II) the luminescent material layer () comprises a luminescent material () configured in a light-receiving relationship with the light generating device () and configured to convert at least part of the polarized laser radiation () into luminescent material radiation (); (III) the light generating system () is configured to generate in an operational mode system light () at least comprising the luminescent material radiation (); (IV) the optics () comprise first optics () and second optics (); wherein the first optics () are configured to change the polarization of the polarized laser radiation (), and wherein the second optics () have one or more of (i) a polarization dependent transmission and (ii) a polarization dependent reflection for the polarized laser radiation (); and (V) the light generating device () and the optics () are configured such that, relative to an optical path of the luminescent material radiation () emanating from the luminescent material (), the second optics () are configured downstream from the first optics () and the luminescent material ().

Eye safe laser lighting system using built in safety

Disclosed is a light generating system including a light source, a luminescent material, and a control system, the light source is configured in an operational mode to generate pulsed light source light having a pulse frequency and a duty cycle, the luminescent material is configured to convert part of the light source light into luminescent material light, wherein the luminescent material light has a luminescence decay time, the light generating system is configured in the operational mode to generate system light comprising light source light and the luminescent material light; the system light has a variable color point and the control system is configured in the operational mode to control the color point by controlling one or more of the pulse frequency and the duty cycle.

Color tunable laser based source

This invention relates to a safety measure taken against unsafe exposure of high-intensity laser light that is relevant for the reliable and safer operation of laser-based lighting devices. According to this invention, a lighting device comprises a first light-emitting semiconductor device and a light-conversion device. The first light-emitting semiconductor device is a laser device configured to generate a first light output and the 5light-conversion device is configured to receive the first light output and convert at least part of the first light output into a converted light output. The lighting device further comprises an optical element configured to receive the converted light output from the light-conversion device. The optical element is configured to transmit the converted light output and the first light output, and attenuate the first light output above a threshold value of the first light output.

Laser-based lighting device

The invention provides a light generating system () comprising a LED module (), a module support (), and a connector element (), wherein: the module support () comprises a first module support opening () for hosting at least part of a first connector element part (); the LED module () comprises a LED support () and a plurality of LEDs () functionally coupled to the LED support (), wherein the LED support () comprises a LED support opening () for hosting at least part of the first connector element part (); and wherein the plurality of LEDs () are configured to generate light source light (); the connector element () comprises the first connector element part (), and wherein the first connector element part () comprises a first spring part (); at least part of the first connector element part () penetrates through the first module support opening); and the LED support opening (), the first connector element part (), and the module support () are chosen such that in a functional coupling of the LED module () and the module support (), at least part of the first connector element part () penetrates through the LED support opening (), and the first spring part () exerts a force on the LED module () against the module support ().

Lamp or luminaire comprising a LED module

The invention provides a lighting device () comprising: —a first light source () configured to generate first light source light (), having a first light source light spectral power distribution, wherein the first light source () comprises a laser light source (), and wherein the first light source light () has an optical axis (); —a first converter material (), comprising a first luminescent material (), configured to convert at least part of the first light source light () into first luminescent material light () having a first luminescent material light spectral power distribution, wherein the first luminescent material light () has one or more wavelengths in the green and/or yellow wavelength range; —a second converter material (), comprising a second luminescent material (), configured to convert part of the first luminescent material light () into second luminescent material light () having a second luminescent material light spectral power distribution different from the first luminescent material light spectral power distribution, wherein the second luminescent material light () has one or more wavelengths in the orange and/or red wavelength range; wherein the first light source (), the first converter material (), and the second converter material () are configured such that first light source light () can only reach the second converter material () after scattering via the first converter material (); wherein the optical axis (O) is incident on the first converter material () and is not incident on the second converter material (); and —a first thermally conductive element () in thermal contact with at least part of the second luminescent material ().

High quality white laser-based light source by indirect pumping of red phosphor

The invention provides a light generating device () comprising (i) a plurality of n light sources (), and (ii) an optical component () comprising an array () of prismatic elements (), wherein: (a) the plurality of n light sources () comprise a first subset of one or more first light sources () configured to generate collimated first light source light () and a second subset of one or more second light sources () configured to generate collimated second light source light (), wherein n>2; (b) the array () of prismatic elements () is configured in a light receiving relationship with the n light sources (), wherein the array of prismatic elements () comprises k1 parallel arranged first prismatic faces () and k2 parallel arranged second prismatic faces (), wherein k1>2 and wherein k2>2, wherein the first prismatic faces () and the second prismatic faces () are not mutually parallel; (c) the first light sources () are configured to irradiate the first prismatic faces () and the second light sources () are configured to irradiate the second prismatic faces (); and (d) the prismatic elements () are configured to reflect or refract the collimated first light source light () and the collimated second light source light () as coincident beams of first light source light () and second light source light ().

Compact laser beam combiner with micro-prism reflector

The invention provides a light generating device () configured to generate device light (), wherein the light generating device () comprises a first light source (), a first luminescent material (), a second source () of second light (), and a third light source (), wherein: the first light source () is configured to generate blue first light source light () having a first peak wavelength &#x3bb;selected from the spectral wavelength range of 440-475 nm, wherein the first light source () is a first laser light source (); the first luminescent material () is configured to convert at least part of the first light source light () into first luminescent material light () having an emission band having wavelengths in one or more of (a) the green spectral wavelength range and (b) the yellow spectral wavelength range, wherein the first luminescent material () comprises a luminescent material of the type ABO:Ce, wherein A comprises one or more of Y, Gd, Tb and Lu, and wherein B comprises one or more of Al, Ga, and In, wherein A comprises at least Y, and wherein B comprises at least Al; the second source () of second light () is configured to provide the second light () having an emission band having a dominant wavelength or peak wavelength in the spectral wavelength range of 580-610 nm; the third light source () is configured to generate red third light source light () having a third peak wavelength &#x3bb;selected from the spectral wavelength range of 630-670 nm, wherein the third light source () is a third laser light source (); the light generating device () is configured to provide in a first operational mode white device light () comprising the first light source light (), the first luminescent material light (), the second light (), and the third light source light (), with a correlated color temperature selected from the range of 2000-5000 K and a color rendering index (CRI) of at least 80.

High intensity light source with high CRI

The invention provides a light generating device () configured to generate device light (), wherein the light generating device () comprises a first light source (), a first luminescent material (), a second light source () of second light source light (), and a second light source (), wherein: the first light source () is configured to generate blue first light source light () having a first peak wavelength &#x3bb;selected from the spectral wavelength range of 437-472 nm, wherein the first light source () is a first laser light source (); the first luminescent material () is configured to convert at least part of the first light source light () into first luminescent material light () having an emission band having wavelengths in one or more of (a) the green spectral wavelength range and (b) the yellow spectral wavelength range, wherein the first luminescent material () comprises a luminescent material of the type ABO:Ce, wherein A comprises one or more of Y, La, Gd, Tb and Lu, especially (at least) one or more of Y, Gd, Tb and Lu, and wherein B comprises one or more of Al, Ga, In and Sc; the second light source () of second light source light () is configured to provide the second light source light () having an emission band having a dominant wavelength or peak wavelength in the spectral wavelength range of 580-610 nm; the second light source () is configured to generate red second light source light () having a second peak wavelength &#x3bb;selected from the spectral wavelength range of 630-670 nm, wherein the second light source () is a second laser light source (); the light generating device () is configured to provide in a first operational mode white device light () comprising the first light source light (), the first luminescent material light (), the second light source light (), and the second light source light (), with a correlated color temperature selected from the range of 2000-3150 K and a color rendering index (CRI) of at least 80.

High intensity light source with high CRI and R9

The invention provides an arrangement () comprising a device (), wherein the device () comprises a luminescent material comprising element () and a light transmissive element (), wherein: (a) the device () has a first device axis (A1); (b) the luminescent material comprising element () comprises a luminescent material () configured to emit luminescent material light () upon irradiation with first light (), wherein the luminescent material comprising element () has a first length (L1) and a characteristic first dimension (D1) perpendicular to the first length (L1), wherein D1/L1&#x3c;1; wherein the luminescent material comprising element () is configured at a non-zero first distance (r1) from the first device axis (A1), and wherein the luminescent material comprising element () at least partly surrounds the first device axis (A1); (c) the light transmissive element () is transmissive for the first light (), wherein the light transmissive element () comprises a element light entrance part (and an element light escape part (), wherein the element light escape part () and the luminescent material () are radiationally coupled; wherein one or more of the following applies: (i) the first device axis (A1) intersects the light transmissive element (), and (ii) the light transmissive element () at least partly surrounds the first device axis (A1); and (d) the luminescent material comprising element () is in thermal contact with one or more of (a) the light transmissive element () and (b) an optional thermally conductive element ().

Compact laser-based light generating device

This invention relates to the field of lighting modules employing light emitting diodes (LEDs), and more particularly to LED modules suitable for exposed lens plate luminaires. There is herein provided an LED module having a printed circuit board comprising at least two layers, wherein the interface between two layers at a side surface of the printed circuit board is covered by a protrusion of an optically transmissive cover plate. The same said optically transmissive cover plate is also adapted to cover at least one LED positioned in or on the printed circuit board.

LED module and method of sealing

A lighting unit comprising a tapering cavity surrounded by a circumferential reflective wall and extending between a light emission window and a light entrance surface where a light source is (to be) mounted. An optical plate having a light outcoupling structure is provided at the light emission window for redirecting and issuing light as a uniform lighting unit light beam. Said uniform lighting unit light beam has a first beam emission angle &#x3b2; in a first direction and optionally, for example for a rectangular shaped light emission window, a second beam emission angle &#x3b3; in a second direction transverse to the first direction. The tapering cavity having a first cut-off angle &#x3b1; in said first direction, wherein &#x3b2;=&#x3b1;+2*&#x3b4; with 0&#xb0;&#x3c;&#x3b4;&#x3c;=10&#xb0;, and optionally a second cut-off angles &#x3b5; in the second direction transverse to the first direction wherein &#x3b3;=&#x3b5;+&#x398; with 0&#xb0;&#x3c;=&#x398;&#x3c;=10&#xb0;.

Lighting unit, especially for road illumination

The invention provides a lighting unit () comprising (a) a lighting unit cavity (), (b) a light source unit (), for light source unit light (), wherein the light source unit () comprises a light source () and a collimator (), and (c) a light exit window (), configured to enclose at least part of the lighting unit cavity () and configured to allow transmission of at least part of the light source unit light () as a beam of light (), wherein the light exit window () comprises an upstream face () and a downstream face (), with the upstream face () directed to the lighting unit cavity (); wherein the upstream face () comprises light outcoupling structures (), configured to couple the light source unit light () via the light exit window () out of the lighting unit ().

The invention describes a liquid crystal color picture screen with an improved luminous efficacy and an improved viewing angle. The liquid crystal color picture screen comprises a photoluminescent layer ( ) which contains a dichroically absorbing color agent and an isotropically emitting color agent.

Growing community of inventors

Valkenswaard, Netherlands

Robert Van Asselt