This invention relates generically to a recessed spot light, in which a lens is present which is capable of producing two or more different photometric solids.

More specifically, the invention relates to a compact, high-performance spot light with a high degree of protection; the function of making two or more optical groups with a same lens means that the lens does not have to be removed and/or two or more lenses do not have to be used in the same product.

The most frequent installations of the spot light, which is the subject of the invention, include, but are not limited to, recessed installations in modular false ceilings.

In the lighting sector, a large number of constructive solutions have already been proposed for the design and production of refractive and/or reflective and/or diffusive systems to be coupled to LED light sources, with the aim of obtaining comfortable lighting.

In particular, diffusive panels are often used, which provide a large and homogeneous emitting surface with a substantially Lambertian distribution; these conceal the direct view of the LEDs and thus avoid the presence of circumscribed areas (at the individual LEDs) on the surface of the product from which high luminance emanates.

However, these solutions are inevitably not very efficient because, partly due to the use of diffusive materials, they do not allow the lighting performance/consumption ratio to be optimised.

Moreover, they do not allow two or more different photometric solids to be obtained with the same lens.

The aim of the invention is, therefore, to make a recessed spot light having a single lens capable of obtaining two or more different photometric solids, together with a high efficiency.

Another aim of the invention is to make a recessed spot light with a compact structure, high levels of performance and a high degree of protection.

A further aim of the invention is to make a recessed spot light which is easy and inexpensive to produce, compared to prior art solutions, by virtue of the advantages achieved.

These and other aims, which will appear more clearly below, are achieved by a recessed spot light according to the appended claim 1 ; further detailed features of the spot light according to the invention are given in the dependent claims.

Advantageously, the recessed spot light according to the invention is equipped with an LED light source and a lens capable of obtaining two or more different photometric solids. In order to switch from one solid to the other, there is a mechanism for releasing and rotating the assembly comprising the LED light sources and the dissipater, so as to make the LED light sources collimate, alternately, with one of the two or more optical groups present on the external lens for diffusion of the light radiation. In practice, a mechanical solution is used whereby an array of LED light sources can be exposed to a lens in at least two different positions and, in particular, between two positions at right angles to each other, so as to obtain two or more different photometric patterns.

Further features and advantages of the invention will be more apparent from the description of a preferred, but not exclusive, embodiment of the recessed spot light according to the invention, illustrated by way of non limiting example in the appended drawings, wherein:

- Figure 1 is a plan view from above of a recessed spot light according to the invention; - Figures 2 and 3 show two side views of the recessed spot light of

Figure 1 , according to the invention;

- Figure 4 is a plan view from below of the recessed spot light of Figure 1 , according to the invention.

With reference to the above-mentioned figures, the recessed spot light 10 according to the invention has an external structure or frame 11 , to which a connection bracket 12 is connected designed for being recessed in a false ceiling.

In a central position with respect to the frame 11 , at least one lens 13 for diffusing the light radiation is placed, where at least two optical groups 14,

15 are formed, designed for forming two or more different photometric solids; in particular, according to preferred, but not limiting, embodiments of the invention, a single lens 13 and two optical groups 14, 15 are used in orthogonal positions with respect to each other.

The connection bracket 12 connects the frame 11 , equipped with the lens 13, to a containment assembly 16, which comprises the LED light sources and a dissipating element and which is positioned at the lens 13 adjacent to and further inside than the bracket 12. Advantageously, according to the invention, one is able to make at least two different photometric solids with the same lens 13.

This is achieved by means of a mechanism for releasing the bracket 12, which allows the LED light sources inserted in the containment assembly

16 to be collimated, alternatively with one of the optical groups 14, 15 of the lens 13; in particular, by releasing the bracket 12 from the appropriate seats on the external frame 11 , it is possible to lift the containment assembly 16 and rotate it, so as to use the optical groups 14 or 15 on the same lens 13 and to obtain more photometric solids without having to disassemble the lens and/or provide for the use of more than one lens on the same product. In practice, the same bracket 12, fitted with levers 19 and suspension springs 18 for mounting the spot light in the false ceiling, keeps the containment assembly 16 always in the correct position with respect to the frame 11 and the lens 13; then, with the simple pressure of two fingers, it is possible to disengage the connection bracket 12 from the frame 11 and the lens 13, thus allowing the assembly 16 to be rotated.

The same mechanical solution also makes it possible to, if necessary, create a housing 20, placed centrally with respect to the lens 13 or in any case in predetermined areas of the lens 13, for the positioning of one or more lasers with a special built-in lens, which project a pictogram, for example indicating an emergency exit, on the ground.

The characteristics of the recessed spot light, according to the invention, clearly emerge from the above description, as do the advantages thereof.

In particular, the above-mentioned advantages include: - use of a single lens to obtain two or more different photometric patterns;

- use of the same mechanical mounting parts as the recessed spot light to create two or more alternative optical groups; - simplicity for the user to change the light beam as required;

- possibility of using a laser to project pictograms on the ground.

The invention as it is conceived is susceptible to numerous modifications and variants, all falling within the scope of protection of the appended claims. Moreover, all the details can be replaced by other technically-equivalent elements.

In practice, the materials used, as well as the contingent shapes and dimensions, can be varied according to the contingent requirements and the background art. Where the constructional characteristics and the technical characteristics mentioned in the following claims are followed by signs or reference numbers, the signs or reference numbers have been used only with the aim of increasing the intelligibility of the claims themselves and, consequently, they do not constitute in any way a limitation to the interpretation of each element identified, purely by way of example, by the signs or reference numerals.