# US 12,222,097 B2 · Lighting system

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- Number: US 12,222,097 B2
- Document ID: US12222097B2
- Status: Granted
- Kind: B2
- Application number: 18/691,230
- Filed: 2022-09-12
- Published: 2024-12-12
- Granted: 2025-02-11
- Earliest claimed: 2021-09-14
- Assignees: Signify Holding B.V.
- Applicants: Signify Holding B.V.
- Inventors: Ludovicus Johannes Lambertus Haenen; Olexandr Valentynovych Vdovin; Hugo Johan Cornelissen; Martinus Petrus Joseph Peeters
- Web page: https://patentgrep.com/patent/US12222097B2

## CPC

- F21V 5/007: {Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008)}
- G02B 19/0057: {in the form of a laser diode array, e.g. laser diode bar (semiconductor laser arrays with beam combining arrangement H01S5/4012)}
- G02B 3/0056: {arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085)}
- G02B 3/0068: {arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements (G02B5/1885, G02B17/002, G02B30/27 take precedence)}
- G02B 19/0066: {in the form of an LED array}
- G02B 27/0961: {Lens arrays (lens arrays per se G02B3/0006)}
- F21Y 2105/12: characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
- F21Y 2115/10: Light-emitting diodes [LED]
- F21Y 2115/30: Semiconductor lasers
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

The invention provides a lighting system (1000), wherein the lighting system (1000) comprises np system sections (100), wherein nF≥2, wherein each system section (100) comprises a light source array section (110), a collimator section (120), and a Koehler integrator section (130), wherein: for each of the system sections (100) applies: the light source array section (110) comprises a plurality of section light sources (10) configured to provide light source light (11); the Koehler integrator section (120) comprises a section entrance face (131) and a section exit face (136), wherein the section entrance face comprises a plurality of section entrance lenslets (132) shaped according to an section entrance surface pattern (31), and wherein the section exit face (136) comprises a plurality of section exit lenslets (137) shaped according to a section exit surface pattern (36), and wherein the section entrance face (131) is configured in a light receiving relationship with the plurality of section light sources (10) via the collimator section (120); each of the plurality of section light sources (10) have a light emitting surface (15), wherein the light emitting surface (15) has a first axis of elongation A1 and an aspect ratio RS, wherein RS>1; each first axis of elongation A1 has an angle αA1 to an averaged first direction of the axes of elongation A1, wherein α1≤5°; the section entrance surface pattern (31) comprises a section entrance tessellation (33) of an entrance lenslet shape, wherein the entrance lenslet shape has a rotational symmetry of order nA, wherein nA≥2, wherein the entrance lenslet shape has an entrance aspect ratio R1 and wherein R1≤RS; the section exit surface pattern (36) comprises a section exit tessellation (37) of an exit lenslet shape, wherein the exit lenslet shape approximates the light emitting surface (15), wherein the exit lenslet shape has an exit aspect ratio R2, wherein R2 is selected from the range of 0.8*RS−1.2*RS; and at least two system sections (100) of the system sections (100) are rotated relative to another for 360°/nA/k+(360/nA)*nI, wherein m is anon-negative integer, and wherein k is selected from the range of 2-12.

## Claims

### Claim 1

A lighting system configured for providing a beam of light having a predefined shape, wherein the lighting system comprises nF system sections, wherein nF≥2, wherein each system section comprises a light source array section, a collimator section, and a Koehler integrator section, wherein:
for each of the system sections applies:
the light source array section comprises a plurality of section light sources configured to provide light source light;
the Koehler integrator section comprises a section entrance face and a section exit face, wherein the section entrance face comprises a plurality of section entrance lenslets shaped according to an section entrance surface pattern, and wherein the section exit face comprises a plurality of section exit lenslets shaped according to a section exit surface pattern, and wherein the section entrance face is configured in a light receiving relationship with the plurality of section light sources via the collimator section;
each of the plurality of section light sources have a light emitting surface, wherein the light emitting surface has a first axis of elongation A1 and an aspect ratio RS, wherein RS>1;
each first axis of elongation A1 has an angle αA1 to an averaged first direction of the axes of elongation A1, wherein αA1≤5°;
the section entrance surface pattern comprises a section entrance tessellation of an entrance lenslet shape, wherein the entrance lenslet shape has a rotational symmetry of order nA, wherein nA≥2, wherein the entrance lenslet shape has an entrance aspect ratio R1, and wherein R1≤RS;
the section exit surface pattern comprises a section exit tessellation of an exit lenslet shape, wherein the exit lenslet shape approximates the light emitting surface by being superimposable such that an intersection between the exit lenslet shape and the light emitting surface covers at least 90% of the exit lenslet shape and at least 90% of the light emitting surface, wherein the exit lenslet shape has an exit aspect ratio R2, wherein R2 is selected from the range of 0.8*RS-1.2*RS; and
at least two system sections of the system sections are rotated relative to another for (360°/nA)k+(360/*nA)*nI for improving the roundedness of the beam of light, wherein nI is a non-negative integer, and wherein k is selected from the range of 2-12, and
wherein the aspect ratio RS of a shape is defined as the ratio of the longest side to the smallest side of the smallest rectangle realization encompassing the shape.

### Claim 2 (depends on 1)

The lighting system according to claim 1, wherein the entrance lenslet shape is selected from the group comprising a hexagon and a rectangle.

### Claim 3 (depends on 1)

The lighting system according to claim 1, wherein the section entrance tessellation comprises a translation tessellation of the entrance lenslet shape.

### Claim 4 (depends on 1)

The lighting system according to claim 1, wherein nA≥4.

### Claim 5 (depends on 1)

The lighting system according to claim 1, wherein the light emitting surface 15 is a rectangle, and wherein the exit lenslet shape is a rectangle, wherein the exit lenslet shape has a second axis of elongation A2, wherein each second axis of elongation A2 of exit lenslet shapes in the section exit tessellation has an angle αA2 to the averaged first direction of the axes of elongation A1, wherein αA2≤5°.

### Claim 6 (depends on 1)

The lighting system according to claim 1, wherein the section exit tessellation comprises a translation tessellation of the exit lenslet shape.

### Claim 7 (depends on 1)

The lighting system according to claim 1, wherein αA1≤1°, wherein RS≥1.3, and wherein R1≤1.2.

### Claim 8 (depends on 1)

The lighting system according to claim 1, wherein nF≥3, and wherein each system section is rotated relative to two other system sections for (360°/nA)/nF+(360°/nA)*nI.

### Claim 9 (depends on 1)

The lighting system according to claim 1, wherein nF=2, wherein the system sections are rotated relative to one another for (360°/nA)/nF.

### Claim 10 (depends on 1)

The lighting system according to claim 1, wherein the light source array section comprises a plurality of second section light sources configured to provide second light source light, wherein the light source light and the second light source light have different spectral distributions, and wherein the second section light sources have a second light emitting surface, wherein the second light emitting surface has aspect ratio RS2, wherein RS2≥1.

### Claim 11 (depends on 10)

The lighting system according to claim 10, wherein the section light sources comprise phosphor converted laser emitters, and wherein:
the second section light sources comprise light emitting diodes; or
the second section light sources comprise laser sources functionally coupled with diffusers.

### Claim 12 (depends on 10)

The lighting system according to claim 10, wherein the section light sources are configured to provide white light source light, and wherein the second section light sources are configured to provide second light source light having a wavelength in the range of 620-750 nm.

### Claim 13 (depends on 1)

The lighting system according to claim 1, wherein:
the light source array sections of the system sections form a light source array;
the collimator sections of the system sections form a collimator; and
the Koehler integrator sections of the system sections form a Koehler integrator.

### Claim 14 (depends on 1)

The lighting system according to claim 1, wherein the lighting system comprises one or more of an entertainment lighting fixture and an architectural lighting fixture.

### Claim 15 (depends on 1)

A light generating device selected from the group of a lamp (1), a luminaire (2), a projector device (3), a disinfection device, a stage lighting device, a chemical reaction stimulation device, and an optical wireless communication device, comprising the lighting system according to claim 1.