RU187621U1 - OPTICAL SYSTEM WITH MULTILINSE LED LAMP - Google Patents

Abstract

The invention relates to the field of lighting engineering, namely, to the optical elements of LED lamps for mass use, in particular for street lighting of roads, highways, highways and squares.

Providing a luminous flux with a given brightness, luminous intensity and illumination of objects with an unchanged shape of the luminous intensity curve is achieved in an LED luminaire with an optical system made of a material that is transparent in the visible region of the spectrum and which is made in the form of an extended body with a trapezoidal recess in the lower plane of which a multi-lens is formed where the individual lenses are combined in at least two pairs of parallel rows, while the lenses are made with a given internal and external geometry and are grouped into an equal matrix remote distance from each other and with displacement in adjacent rows.

In this case, the edge of the upper perimeter of the extended body is intended for applying a sealing composition to protect against external influences. Mounting holes are made uniformly on the surface of the multi-lens for proper orientation and fixing relative to the LED module. A protruding prismatic volume is formed in the trapezoidal recess to accommodate the contacts of the lamp. 5 cp f-ly; 5 ill.

Description

Application area

The utility model relates to the field of lighting technology, namely, to the optical elements of LED lamps for mass use, in particular for street lighting of roads, highways, highways and squares.

Description of the prior art

Most LEDs are currently manufactured without primary optics - an external plastic lens. This is done, first of all, because the primary optics do not always satisfy the lamp manufacturer, proceeding from the requirements of modern lighting technology and wanting to get more comfortable lighting in specific lighting conditions.

Therefore, to expand the possibilities of using LEDs, taking into account the distribution of the light flux necessary for the consumer, secondary optics are used in the manufacture of modern luminaires. It consists of lenses made of polycarbonate, either from polymethylmethacrylate or from organosilicon compounds for installation in luminaires with either single LEDs or LED modules. To form the necessary distribution of the light flux, the lenses of the secondary optics must be precisely positioned relative to the LED crystal and consist of lens blocks (multi-lenses) that cover the entire board, which is much more economical in time and much cheaper in production.

Known lighting design with the ability to replace or remove lenses without the use of additional tools according to US patent US 9016892, used, in particular for street lamps. Where the design includes a housing with a Central channel of the driver, designed to control one or more LEDs located outside the channel of the driver, while the side grooves of the housing are configured to receive and fix the lenses. The lens may include a color filter that changes the color of the visible emitted light emitted from the lighting structure 100. In addition, the lens may include a function of the tint of light, which causes a decrease in intensity (for example, reduces brightness, etc.). Another alternative is that the lens may include a directional function that directs light toward a selected location. Thus, the lenses make it easy to tune without having to change the LEDs (e.g., LED strip 160). This solution involves the use of a lens mounting system based on a system of flanges, grooves and cutouts to prevent lateral or vertical movement of the lens relative to the LED line.

This solution, which can be used in street lamps, reveals, first of all, the original light distribution diagram, the lens organization system in one piece.

Known LED lamp with cylindrical lenses according to the application US US 2015/0124458. Where the lamp contains a module with many LEDs distributed on the surface of the module in the form of longitudinal and transverse rows. Moreover, the lamp further comprises an optical system (5, 8) for generating beams of light emitted by the LEDs (3), including at least one first system of cylindrical lenses (9), which is located in the longitudinal direction (L) while the light of the LEDs (3) from the first row of the plurality of rows (R) is directed to a line on the target surface of the first system of cylindrical lenses (9). The same lens system is provided for the second row of LEDs, etc., while the beam of light falls on one line of the target surface. In addition, the luminaire contains a primary optical system (5) for grouping the emitted light, in which the primary optical system (5) contains many lenses (6), which are located directly on the set of LEDs (3). The use of cylindrical Lenses, which span a plurality of LEDs, allows efficiently achieving uniform focusing of the light of individual LEDs.

The disadvantage of this solution is the use of cylindrical lenses. However, this configuration cannot evenly scatter light in the illuminated area, since the emitted light is controlled in only one direction.

A known solution of the LED lamp according to the patent for utility model No. 102749, aimed, in particular, at increasing the luminous flux, where optical lenses 6 are integrated into the transparent panel 5, wherein the lenses can be the same throughout the panel field or grouped into zones according to different parameters - lens aperture, their geometry, etc. Depending on the conditions and purposes of use of the lamp, the lenses 6 can be of various geometries: biconvex, flat-convex, concave-convex, biconcave, flat-concave, convex-concave. This allows you to provide various types and forms of lighting: directional concentration of the light flux or diffused lighting of the working area. To ensure the exact coincidence of the optical axes of the LEDs 4 and lenses 6, the LED board 3 has guides that fit into the grooves of the light panel 5. To provide protection against moisture and dust from entering the space between the housing 1, the heat-conducting gasket 2, the printed circuit board 3 with the LEDs 4 and a transparent panel 5, they are sealed at the ends of the perimeter with a heat-conducting compound.

The disadvantages of the solution are: the complexity of the design, the complexity of sealing, the elementary geometry of the lenses forming simple symmetrical diagrams, not suitable for lighting large highways, roads and freeways.

Known devices that use light emitting diodes as a light source, and opposite these light sources are light emitting lenses. Further, the light-emitting lenses have on the incidence surface of the light, which is opposite the light sources, the refraction region on the incidence side and the region of total reflection on the incidence side, and, furthermore, the light-emitting lenses have a light focusing region on the scattering side and the total region on the light scattering surface reflection from the scattering side. This type of lighting device has a very high efficiency of use of light, since when light is emitted from light sources, illumination occurs by scattering light by light-emitting lenses (Japanese Patent Application Publication No. 2008-084696).

Known Lighting device, confirmed by RF patent No. 2470221, according to the application PCT WO 2010/013672. The device comprises an elongated flat base (2), a large number of semiconductor light sources (3) located on a flat base in the longitudinal direction of the flat base, and a lens plate (4) located in front of the semiconductor light sources.

The lens plate comprises a lens surface of incidence of light facing the semiconductor light sources, and a lens surface of light emission. The lens plate is made of an optically transparent material, preferably plastic, such as polycarbonate or acrylic. With an optical transmittance of transmission of light emitted by semiconductor sources, up to 100%.

The lens plate has a lens section formed on the surface of the incidence of light, distributing light emitted by the semiconductor light sources in the longitudinal direction, and a second lens section formed on the other lens surface of the incidence of light, distributing the light emitted by the semiconductor light sources in the width direction.

The first lens section has lens blocks 12 located at predetermined intervals, while the lens block contains prisms 5 and a block with a curved surface 8, which consists of two or more adjacent sections. The second lens section has a cylindrical lens 9 formed on the lens surface of the light emission. The cylindrical lens has convex and concave parts formed in a width direction that is perpendicular to the longitudinal direction of the lens plate.

The known lighting device allows you to effectively control the directivity of the light emitted in the vicinity of semiconductor light sources, and the lighting device allows you to balance light distribution over the illuminated area without the formation of secondary peaks, regardless of the installation position of the lighting device.

The disadvantages of solving the lens plate are: 2 different types of lenses to form a single diagram.

According to the set of essential features, the closest to the claimed utility model is the solution for the utility model patent No. 139022, where the glass for the luminaire has a concave shape, made of a material that is transparent in the visible spectrum, and contains lenses combined in at least two pairs of parallel each other in rows, while the glass also has stiffeners, an edge for fixing it on the lamp housing.

SUMMARY OF THE INVENTION

The main difference between the claimed solution and the said patent is that the optical system with a multi-lens contains lenses combined in at least two pairs of rows parallel to each other with lens displacement in the rows.

The technical result, the achievement of which the claimed solution is to provide a luminous flux with a given brightness, light intensity and illumination of objects with an unchanged shape of the light intensity curve.

The specified technical result is achieved when an optical system is used in an LED lamp from a material transparent in the visible region, which is made in the form of an extended body with a trapezoidal recess, in the lower plane of which a multi-lens is formed, where the individual lenses are combined in at least two pairs of parallel rows, while the lenses are made with a given internal and external geometry and are grouped into a matrix at an equidistant distance from each other and with an offset in adjacent rows.

The sides of the extended body, with mounting holes made around the perimeter, are designed to be fixed in the lamp housing using, for example, mounting elements. In this case, the edge of the upper perimeter of the extended body is intended for applying a sealing composition to protect against external influences. Mounting holes are made uniformly on the surface of the multi-lens for proper orientation and fixing relative to the LED module. A protruding prismatic volume is formed in the trapezoidal recess ^: to accommodate the contacts of the lamp, the external surface of the volume can be used to place product information, for example, the name of the manufacturer. The optical system is made of polycarbonate or polymethyl methacrylate or organosilicon compounds

The claimed solution is illustrated in FIG. 1-5:

FIG. 1 is a perspective view schematically showing a multi-lens optical system.

FIG. 2 Projection views of an optical system in accordance with the present invention.

FIG. 3. The graph of the distribution of light intensity in the Cartesian coordinate system, cd (deg)

FIG. 4 Graph of the distribution of light intensity in the polar coordinate system, cd (degree)

FIG. 5 Graph of the distribution of surface illumination, lux, where the sheet parameters:

Length L = 65 m; Width B = 65 m; The distance to the light source is R = 10 m.

An optical system with a multi-lens operates as follows.

An optical system with a multi-lens 1 located in a trapezoidal recess, the walls of which 2 play the role of a reflector, is mounted in the lamp housing, and the sides 7, with perimeter fixing holes 8, are fixed using hardware.

The edge of the upper perimeter 4 is intended for applying a sealing composition to protect against external influences, such as moisture and dust.

The lenses 3 of the optical system should be located strictly above the LED matrix of the lamp. Mounting holes (5) are evenly distributed over the surface of the multi-lens and are designed for strict and accurate positioning of it in the lamp housing relative to each of the LEDs.

In the trapezoidal recess, a protruding prismatic volume 6 is formed in the material of the optical system to accommodate the contacts of the lamp, the external surface of the volume can be used to place commodity information, for example, the name of the manufacturer.

The use of high-quality optical material for the production of the optical system eliminates the heating of the LED board and the multi-lens itself by the energy of the light flux in view of the high light transmittance.

The individual optical elements - lenses 3 in a trapezoidal recess are grouped into a matrix corresponding to the matrix of LEDs and are located at equidistant distance from each other with the so-called "offset in rows". The lenses have complex internal and external geometry and allow you to create the necessary diagram of the distribution of luminous flux shown in FIG. 3-5. Each of the lenses forms the same diagram and distributes light in all directions. An increase in the luminous flux, brightness, light intensity and illumination of objects depends on the number of identical lenses in the optical element, leaving the shape of the light intensity curve unchanged.

The designed model for positioning optical elements in the optical system in the form of a multi-lens, with the so-called “shift in rows”, allows to achieve the optimal level of brightness uniformity reflected from the illuminated surface, as well as eliminate the glare that occurs when you look directly at the light source. Separate single lenses that are part of the multi-lens make it possible to achieve the desired light intensity curve ideally suited for roads and highways of higher classes A and B. Any change in the internal and external geometry of the multi-lens and its optical and structural elements will significantly change the light intensity curve and other basic photometric characteristics of the lighting instrument.

This design can be used in lamps and in other industries, for example, industrial, decorative, advertising lighting.

Claims (6)

1. An optical system with a multi-lens LED lamp made of transparent material in the visible region of the spectrum in the form of an extended body with a trapezoidal recess, in the lower plane of which a lens system is formed, combined at least in two pairs of rows parallel to each other, characterized in that the lenses are made with a given internal and external geometry with the possibility of creating a given diagram of the distribution of light flux and grouped into a matrix at an equidistant distance from each other and with in the adjacent rows. 2. The optical system according to claim 1, characterized in that the sides of the extended body, with mounting holes made around the perimeter, are designed to be fixed in the lamp housing. 3. The optical system according to claim 1, characterized in that the edge of the upper perimeter of the extended body is intended for applying a sealing composition. 4. The optical system according to claim 1, characterized in that the mounting holes are made uniformly on the surface of the multi-lens. 5. The optical system according to claim 1, characterized in that a protruding prismatic volume is formed in the trapezoidal recess to accommodate the contacts of the lamp, the external surface of the volume can be used to place product information, for example, the name of the manufacturer. 6. The optical system according to claim 1, characterized in that it is made of polycarbonate, or of polymethyl methacrylate, or of organosilicon compounds.

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