# US 12,181,144 B2 · Removable lens system for a luminaire

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- Number: US 12,181,144 B2
- Document ID: US12181144B2
- Status: Granted
- Kind: B2
- Application number: 18/427,256
- Filed: 2024-01-30
- Published: 2024-05-23
- Granted: 2024-12-31
- Earliest claimed: 2024-01-30
- Assignees: Robe Lighting s.r.o.
- Applicants: ROBE lighting s.r.o.
- Inventors: Pavel Jurik; Marek Vaclavek; Josef Valchar
- Web page: https://patentgrep.com/patent/US12181144B2

## 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)}
- F21V 14/06: by movement of refractors {(in vehicle head lamps F21S41/635)}
- F21L 14/00: Electric lighting devices without a self-contained power source, e.g. for mains connection
- F21V 5/048: {the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses}
- F21V 17/002: {with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function (F21V17/10 takes precedence)}
- F21V 17/02: with provision for adjustment (F21V17/04 - F21V17/08 take precedence)
- F21V 17/06: the fastening being onto or by the lampholder
- F21V 21/145: {for portable lighting devices}
- F21V 21/30: Pivoted housings or frames
- F21V 23/008: {the casing being outside the housing of the lighting device}
- F21V 29/85: characterised by the material (liquid coolants F21V29/56)
- F21W 2131/406: for theatres, stages or film studios
- F21Y 2105/14: characterised by the overall shape of the two-dimensional [2D] array
- F21Y 2105/18: annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
- F21Y 2115/10: Light-emitting diodes [LED]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21L: LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- 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

A luminaire and optical system are provided. The luminaire includes a head and power circuits configured to provide electrical power to electrical circuits of the head. The head includes an optical system with a light source support plate, a support structure movably coupled to the light source support plate, and a lens support assembly removably coupled to the support structure. The light source support plate includes LED light sources, each configured to emit a light beam. The support structure includes a plurality of apertures, configured to pass the light beam from the LED light sources without modifying the light beam. The lens support assembly includes lenses, each aligned with an optical axis of one of the LED light sources when the lens support assembly is coupled to the support structure. The lens support assembly is removable from the head without removing the support structure from the head.

## Claims

### Claim 1

An optical system comprising:
a light source support plate comprising a plurality of LED light sources, wherein each light source is configured to emit a light beam;
a support structure, movably coupled to the light source support plate, wherein the support structure comprises a plurality of apertures, each aperture configured to pass the light beam from a corresponding one of the LED light sources without modifying the light beam; and
a lens support assembly, removably coupled to the support structure, wherein:
the lens support assembly comprises a plurality of lenses, each lens aligned with an optical axis of a corresponding one of the LED light sources when the lens support assembly is coupled to the support structure,
the lens support assembly comprises a front plate removably coupled to a rear plate, the front plate and the rear plate configured, when coupled together, to clamp the lenses of the plurality of lenses into position, and
the lens support assembly is removable from the support structure without removing the support structure from the light source support plate.

### Claim 2 (depends on 1)

The optical system of claim 1, wherein the lens support assembly is removably coupled to the support structure by a quick release fastener.

### Claim 3 (depends on 1)

The optical system of claim 1, wherein the front plate is removably coupled to the rear plate by a quick release fastener.

### Claim 4 (depends on 1)

The optical system of claim 1, wherein the front plate and the rear plate comprise materials selected to allow the front plate, the rear plate, and the plurality of lenses to be cleaned in a single process.

### Claim 5 (depends on 4)

The optical system of claim 4, wherein the lens support assembly is configured to be cleaned in a commercial dishwasher.

### Claim 6 (depends on 4)

The optical system of claim 4, wherein one of the front plate and the rear plate comprises a metal and another one of the front plate and the rear plate comprises a plastic.

### Claim 7 (depends on 4)

The optical system of claim 4, wherein the front plate and the rear plate each comprises a material having a heat deflection temperature of at least 125° Celsius.

### Claim 8 (depends on 4)

The optical system of claim 4, wherein the lens support assembly is removably coupled to the support structure by a quick release fastener.

### Claim 9

A luminaire comprising:
a head comprising:
a light source support plate comprising a plurality of LED light sources, wherein each light source is configured to emit a light beam;
a support structure, movably coupled to the light source support plate, wherein the support structure comprises a plurality of apertures, each aperture configured to pass the light beam from a corresponding one of the LED light sources without modifying the light beam; and
a lens support assembly, removably coupled to the support structure, wherein:
the lens support assembly comprises a plurality of lenses, each lens aligned with an optical axis of a corresponding one of the LED light sources when the lens support assembly is coupled to the support structure,
the lens support assembly comprises a front plate removably coupled to a rear plate, the front plate and the rear plate configured, when coupled together, to clamp the lenses of the plurality of lenses into position, and
the lens support assembly is removable from the head without removing the support structure from the head; and
power circuits configured to provide electrical power to electrical circuits of the head.

### Claim 10 (depends on 9)

The luminaire of claim 9, further comprising:
a yoke assembly, wherein the head is rotatably mounted in the yoke assembly for rotation about a tilt axis.

### Claim 11 (depends on 10)

The luminaire of claim 10, further comprising:
a base, wherein the yoke assembly is rotatably mounted to the base for rotation about a pan axis.

### Claim 12 (depends on 9)

The luminaire of claim 9, wherein the lens support assembly is configured to be removed from the head without removing an external cover of the head.

### Claim 13 (depends on 9)

The luminaire of claim 9, wherein the lens support assembly is removably coupled to the support structure by a releasable fastener.

### Claim 14 (depends on 13)

The luminaire of claim 13, wherein the releasable fastener comprises a quick release fastener.

### Claim 15 (depends on 13)

The luminaire of claim 13, wherein the releasable fastener comprises a screw.

### Claim 16 (depends on 9)

The luminaire of claim 9, wherein the front plate and the rear plate comprise materials selected to allow the front plate, the rear plate, and the plurality of lenses to be cleaned in a single process.

### Claim 17 (depends on 16)

The luminaire of claim 16, wherein the lens support assembly is configured to be cleaned in a commercial dishwasher.

### Claim 18 (depends on 16)

The luminaire of claim 16, wherein one of the front plate and the rear plate comprises a metal and another one of the front plate and the rear plate comprises a plastic.

### Claim 19 (depends on 16)

The luminaire of claim 16, wherein the front plate and the rear plate each comprises a material having a heat deflection temperature of at least 125° Celsius.