CN217763098U - Multi-light-source angle-variable uniform illumination optical system - Google Patents

Abstract

The utility model relates to the technical field of optical lighting, and discloses a multi-light-source variable-angle uniform lighting optical system, which comprises a reflecting cup, wherein the reflecting surface of the reflecting cup is fixedly connected with a LED lamp group, and the light emitting surface of the LED lamp group is positioned on the focusing surface of the reflecting cup; the LED lamp banks are arranged in a 'one' or 'article' or 'field' or 'T' shape mode, the LED lamp banks are arranged in an array mode, the LED lamp banks and the LED lamp banks form a small-angle illumination optical system, meanwhile, the light emitting surfaces of the LED lamp banks are located on the focal plane of the light reflecting surface and face the light reflecting surface, light emitted by the LED lamp banks is reflected by the light reflecting surface of the light reflecting cup to be emitted to the illuminated surface, the optical system can be used for obtaining the setting of small-angle light distribution, the good light interception performance is achieved, the steep effect of a light distribution curve is achieved, meanwhile, the light emitting angle can be reduced, the optical efficiency is improved, the situation that a driver can be irradiated by the light supplementing device within a long distance is avoided, and potential safety hazards are reduced.

Description

Multi-light-source angle-variable uniform illumination optical system

Technical Field

The utility model relates to an optical lighting technology field specifically is a variable angle uniform lighting optical system of many light sources.

Background

Along with the development of the LED technology, the application of an LED light source is more and more extensive, wherein the LED light source is applied to an LED light supplement lamp for intelligent transportation industry and smart city security monitoring light supplement, and the LED monitoring light supplement lamp has the common problem of light pollution, influences the driving safety of roads, and particularly has the prominent problem of light pollution and potential safety hazards in the monitoring light supplement lighting of city main roads and expressways. The LED monitoring light supplement lamp has serious light pollution, because the light-emitting angle of the LED monitoring light supplement lamp is too large, a driver can be irradiated by the light supplement equipment within a long distance, the vision is influenced, and potential safety hazards exist; the integral emergent angle is determined by a lens or a reflecting cup, generally 15 degrees to 60 degrees, so that the angle is large and fixed, only part of the emergent angle is reflected by the reflecting cup, and the other part of the emergent angle is directly projected to a surface to be illuminated without passing through the reflecting cup; the light distribution interception performance is poor, the stray light is more, the light pollution is large, the glare is serious, each reflection cup or lens corresponds to 1 LED light source, the utilization efficiency of the light sources is not high, and in order to solve the problems existing in the industry at present, a multi-light-source angle-variable uniform illumination optical system is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many light sources variable angle uniform lighting optical system possesses optical efficiency height, cuts the advantage that light nature is good, the grading curve is precipitous and reduce light outgoing angle, has solved the problem that the very long distance the inside of the above-mentioned driver all can be shone by this light filling equipment.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a many light sources variable angle uniform lighting optical system, the reflection of light face fixedly connected with LED banks of reflection of light cup, the light emitting area of LED banks is located the focus face of reflection of light cup reflection of light face, the reflection of light face shape of reflection of light cup adopts paraboloid of revolution or ellipsoid of revolution, the light emitting direction of LED banks is towards the reflection of light face of reflection of light cup, the shape is arranged to LED banks for "one" font, "article" font, "field" font.

Preferably, the reflecting cup is made of an injection-molded plastic aluminized film, the plastic material is ABS, PMMA, PC or the like, or is made of metal aluminum through spinning, and the inner surface of the reflecting cup is aluminized.

Preferably, the reflector cups may be arranged in a 2 x 4 array to reinforce the light source and increase power.

Preferably, the horizontal and vertical directions of the LED lamp set are symmetrical.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses an adopt the LED banks to form "a" word and "article" font, "field" font mode, and carry out the array with the LED banks and arrange, make its and LED banks component low-angle illumination optical system, LED banks light emitting area is located the focal plane of reflection of light face and towards the reflection of light face simultaneously, the light that sends through the LED banks takes place to reflect through the reflection of light face of reflection of light cup and jets out to the illuminated face, this optical system of messenger can obtain the setting of the grading distribution of small angle, it is good to have realized the interception light nature, the effect that the grading curve is precipitous, can also reduce light outgoing angle simultaneously, optical efficiency is improved, thereby avoided the very long section distance the inside of driver to all receive shining of this light filling equipment, the potential safety hazard is reduced.

Drawings

Fig. 1a and 1b show an optical system of a conventional LED monitoring light supplement lamp;

FIG. 2 is a schematic view of the arrangement scheme of the structure of the present invention;

fig. 3 is a schematic view of the structure of the present invention, i.e., a "one" arrangement scheme 2 x 4 combined array;

FIG. 4 is a 20M distance illumination distribution diagram of the structure of the present invention in a line arrangement;

FIG. 5 is a schematic view of the arrangement scheme of the structure of the utility model in the shape of Chinese character pin;

fig. 6 is a schematic view of the structure of the present invention, which is a 'pin' arrangement scheme 2 x 4 combined array;

FIG. 7 is a 20M distance illumination distribution diagram of the structure 'pin' arrangement scheme of the present invention;

FIG. 8 is a schematic view of the arrangement scheme of the structure of the utility model, which is shaped like Chinese character 'tian';

fig. 9 is a schematic view of the structure of the "field" word arrangement scheme 2 x 4 combined array of the present invention;

FIG. 10 is a 20M distance illumination distribution diagram of the structure of the utility model of the "field" arrangement scheme;

FIG. 11 is a view showing a small-angle illumination optical system composed of a T-shaped reflector and a reflector in example 2;

fig. 12 shows an array optical system in which 32 LED light sources and 8 reflective cups are obtained by arranging a "T" 2 × 4 array;

FIG. 13 is a T-shaped distribution diagram of the illuminance of light spots at a distance of 20 m;

FIG. 14 is a view of a small-angle illumination optical system formed by 4 LED light sources arranged in a line and a reflection cup;

fig. 15 is a schematic diagram of an array optical system using the 2 × 4 array arrangement of fig. 14 to obtain 32 LED light sources and 8 reflective cups;

fig. 16 is a distribution diagram of the illuminance of the light spots of fig. 14 at a distance of 20 meters.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the prior art, referring to fig. 1 a-1 b, most optical systems of conventional LED monitoring fill-in lamps adopt a lens array mode of fig. 1a or a reflective cup array mode of fig. 1b, each LED light source is provided with a lens or a reflective cup, light emitted by the LED light source is refracted by the lens or reflected by the reflective cup in a direction of a Z axis, leaves the lens or the reflective cup and is emitted in the direction of the Z axis to reach a surface to be illuminated, and a plurality of arrays are arranged to achieve required fill-in brightness, wherein a plurality of LED light sources are provided with large power, such as 16, 24, 36 or 48 or even 60, and a small number of LED light sources are provided with small power, such as 8 or 12; the integral emergent angle is determined by a lens or a reflecting cup, generally 15 degrees to 60 degrees, and the characteristics of the prior art are selected according to the requirements:

in the prior art, a plurality of LED light source arrays are used; plating an aluminum film on an acrylic lens array or a plastic reflecting cup array, or plating an aluminum film on a metal aluminum reflecting cup array; each LED light source is provided with a lens or a reflecting cup; the light emitting direction of the light source faces the positive direction of the Z axis, and the angle is adjusted through the refraction of the lens or the reflection of the reflection cup; the lens or the reflecting cup mostly adopts a paraboloid, an ellipsoid, a free-form surface and the like;

has the following disadvantages that the light-emitting angle is generally 15-60 degrees, and the angle is large and fixed; each reflecting cup or lens corresponds to 1 LED light source; only part of light emitted by the LED light source is reflected by the reflecting cup, and the other part of the light is directly projected to a surface to be illuminated without passing through the reflecting cup; the light distribution and interception performance is poor, the stray light is much, the light pollution is large, and the glare is serious; the utilization efficiency of the light source is not high;

the utility model discloses a LED banks 2 forms "one" word and "article" font and "field" font mode, and carry out the array with the LED banks and arrange, make its and LED banks constitution low-angle illumination optical system, LED banks light emitting area is located the focal plane of reflection of light face and towards the reflection of light face simultaneously, the light that sends through the LED banks takes place to reflect through the reflection of light face of reflection of light cup and jets out to the illuminated face, this optical system of messenger can obtain the setting of the grading distribution of small angle, it is good to have realized the interception light nature, the effect that the grading curve is precipitous, can also reduce light outgoing angle simultaneously, optical efficiency is improved, thereby avoided the very long section distance the inside of driver to all receive shining of this light filling equipment, the potential safety hazard is reduced.

A multi-light-source angle-variable uniform illumination optical system comprises a reflection cup 1, wherein a reflection surface of the reflection cup 1 is fixedly connected with an LED lamp group 2, the light emitting surface of the LED lamp group 2 is positioned on a focus surface of a reflection surface 3 of the reflection cup 1, the reflection surface shape of the reflection cup 1 adopts a paraboloid of revolution or an ellipsoid of revolution, the light emitting direction of the LED lamp group 2 faces the reflection surface of the reflection cup 1, and the arrangement shapes of the reflection cups 1 are in a shape like the Chinese character 'yi', a shape like the Chinese character 'pin' and a shape like the Chinese character 'tian'.

Furthermore, the reflecting cup 1 is made of injection plastic aluminized film, the plastic material is ABS, PMMA, PC, etc., or is made of metal aluminum by spinning, and the inner surface is aluminized film.

Furthermore, the reflector 1 may adopt a 2 × 4 array to enhance the light source and increase the power.

Further, the horizontal and vertical directions of the LED lamp set 2 are symmetrical.

The working principle is as follows: the light reflecting cups 1 are arranged into a line shape, a product shape and a field shape, the LED lamp groups 2 are arrayed by 2X 4, so that an array optical system consisting of 8 LED lamp groups 2 and 8 light reflecting cups 1 is obtained, the array optical system and the LED lamp groups 2 form a small-angle illumination optical system, meanwhile, the light emitting surface of the LED lamp groups 2 is positioned on the focal plane of the light reflecting surface and faces the light reflecting surface, the light emitted by the LED lamp groups 2 is reflected and emitted to the illuminated surface through the light reflecting surface of the light reflecting cups 1, so that the optical system can obtain small-angle light distribution, the line shape and the product shape in the vertical direction are the driving direction with the emitting angle of 3-6 degrees, the line shape in the horizontal direction is the driving direction with the emitting angle of 9-18 degrees, the product shape is the driving direction with the emitting angle of 6-12 degrees, and the vertical direction and the horizontal direction of the field shape are both the driving directions with the emitting angle of 5-12 degrees, the horizontal and vertical of the line-shaped and the article-shaped are symmetrical, the light source is asymmetrical in the horizontal and vertical, so the horizontal and vertical angles are different, the horizontal and vertical angles of the field-shaped are symmetrical in the horizontal and vertical, so the horizontal and vertical angles are the same, and the arrangement mode of the line-shaped makes the vertical direction angle about 5 degrees and the horizontal direction angle about 15 degrees, which can meet the application of high-speed snapshot, and the light spot illumination distribution diagram at the distance of 20 meters can also see that the light spot is rectangular, which is just the spliced rectangular image of the reflector cup 1, the horizontal size of the light spot is about 3 times of the vertical size, the horizontal size of the light spot 91 is just 3 times of the vertical size, the side surface also proves that the light spot at the irradiated surface is just the image formed by the light source passing through the reflector cup 1, the light spots are uniformly distributed and the emergent angle is small, the horizontal degree is about 5 degrees, the vertical degree is about 15 degrees, and the arrangement mode of the character form of the 'article', the light spot illumination distribution diagram at 20 meters far away can also be seen, the light spot shape is the character form of the 'article', also just is the spliced image of the reflection cup 1, the side also proves that the light spot at the position of the irradiated surface is just the image formed by the light source passing through the reflection cup 1, the light spot distribution is uniform, the upper emergent angle is small, the remote illumination is facilitated, the lower angle is greatly facilitated for the near illumination, the vertical direction angle and the horizontal direction angle of the 'field' character form are about 6 degrees, the light spot illumination distribution diagram at 20 meters far away meets the application of high-speed snapshot, the light spot shape can also be seen to be square, just the spliced image of the 'field' character square of 4 light sources, the horizontal dimension and the vertical dimension of the light spot are the same, the light spot at the position of the irradiated surface is the image formed by the light source passing through the reflection cup, the light spot distribution is uniform, and the emergent angle is small.

Specific embodiments are provided below:

example 1

The utility model provides a many light sources variable angle uniform lighting optical system, adopt 3 LED light sources to arrange into 1 word and anti-light cup and constitute small-angle lighting optical system, 3 shape of face of reflection of light surface of anti-light cup 1 adopt paraboloid of revolution, LED light source light emitting area is located the focal plane of reflection of light surface 3, LED light source light emitting direction is along burden Z axle direction, towards the reflection of light surface, the light that the LED light source sent takes place the reflection through the reflection of light surface of anti-light cup 1, follow Z axle positive direction after the reflection and jet out to the face of being shone. The optical system can obtain light distribution with small angle, the emergent angle (Y direction or driving direction) of 3-6 degrees in the vertical direction, and the emergent angle (X direction or road width direction) of 9-18 degrees in the horizontal direction. Since the reflector cup is symmetrical in the horizontal and vertical directions and the light source is asymmetrical in the horizontal and vertical directions, the horizontal and vertical angles are different.

Since fig. 2 only has a small-angle illumination optical system composed of 3 LED light sources and 1 reflective cup 1, and the power is low, and the requirement cannot be met, the small-angle illumination optical system actually adopted in the embodiment is as shown in fig. 3, and 3 combined arrays shown in fig. 2 are arranged, in this example, 2 × 4 arrays are arranged, so that an array optical system of 24 LED light sources and 8 reflective cups is obtained, the power is increased, and the actual illumination requirement is met. The working principle of the array optical system is completely the same as that of figure 2, only simple intensity superposition is performed, the obtained small-angle light distribution is the same as that of figure 2, the emergent angle of 3-6 degrees in the vertical direction (Y direction or driving direction) and the emergent angle of 9-18 degrees in the horizontal direction (X direction or road width direction) are also the same as those in the vertical direction, the application of high-speed monitoring, snapshot and light supplement is well met, light pollution is greatly reduced, glare is reduced, and potential safety hazards are eliminated.

As shown in fig. 4, the illuminance distribution diagram of the light spot at a distance of 20 meters can also be seen, the light spot is in a rectangular shape, which is just a rectangular image formed by splicing 3 light sources, the horizontal size of the light spot is about 3 times of the vertical size, the horizontal size formed by splicing 3 light sources is also exactly 3 times of the vertical size, the side surface also proves that the light spot at the illuminated surface is just an image formed by the light source passing through the light reflecting cup, the light spot is uniformly distributed, the emergent angle is small, the horizontal angle is about 5 degrees, and the vertical angle is about 15 degrees.

The utility model adopts the reflecting cup 1 through the secondary optics, the reflecting cup 1 adopts the injection plastic aluminizer, and the plastic material is ABS, PMMA, PC, etc.; or is formed by spinning metal aluminum, and the inner surface is plated with an aluminum film; 3 LED light sources are closely arranged on the focal plane of the reflecting cup in parallel; the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; the LED light source emits light backwards (in the Z-axis negative direction), and the light is reflected by the reflecting surface 3 of the reflecting cup and then emitted out along the Z-axis positive direction; the vertical angle is as small as the horizontal angle, about 5 degrees, and the emergent angle can be adjusted by adjusting the surface shape of the reflecting surface of the reflecting cup and the size of the reflecting cup, so that the angle is within 3-10 degrees; the optical efficiency is high; the light interception is good, and the light distribution curve is steep.

Further preferably, as shown in fig. 5, the utility model discloses the theory of operation adopts 3 LED light sources to arrange into "article" word and anti-light cup and constitutes small-angle illumination optical system, anti-light cup's reflection of light face shape of face adopts paraboloid of revolution, LED light source light emitting area is located the focal plane of reflection of light face, LED light source light emitting direction is for following burden Z axle direction, towards the reflection of light face, the light that the LED light source sent takes place the reflection through the reflection of light face of anti-light cup, follow Z axle positive direction after the reflection and jet out to the face of being shone. The optical system can obtain light distribution with small angle, the emergent angle (Y direction or driving direction) of 3-6 degrees in the vertical direction and the emergent angle (X direction or road width direction) of 6-12 degrees in the horizontal direction. Since the reflector cup is symmetrical in the horizontal and vertical directions and the light source is asymmetrical in the horizontal and vertical directions, the horizontal and vertical angles are different.

Because figure 5 is only the small-angle illumination optical system power that 3 LED light sources and 1 anti-light cup are constituteed less, can not satisfy the demand, so the utility model discloses the small-angle illumination optical system that actually adopts is shown as figure 6, arranges 3 combination arrays shown in figure 5, and this example adopts 2 x 4 arrays to arrange, obtains the array optical system of 24 LED light sources and 8 anti-light cups, and increase power satisfies the actual lighting demand. The working principle of the array optical system is completely the same as that of figure 2, only simple intensity superposition is performed, the obtained small-angle light distribution is the same as that of figure 2, the emergent angle of 3-6 degrees in the vertical direction (Y direction or driving direction) and the emergent angle of 6-12 degrees in the horizontal direction (X direction or road width direction) are also the same as those in figure 2, the application of high-speed monitoring snapshot light supplement is well met, light pollution is greatly reduced, glare is reduced, and potential safety hazards are eliminated.

As shown in fig. 7, the light spot illuminance distribution diagram is a 20m far light spot illuminance distribution diagram, and the light spot can also be seen to be in a shape of a Chinese character 'pin', which is just an image formed by splicing 3 light sources, and the side also proves that the light spot at the illuminated surface is just an image formed by the light source passing through a light reflecting cup, so that the light spots are uniformly distributed, the upper emergent angle is small, the far illumination is facilitated, and the lower angle is greatly facilitated for the near illumination.

In this embodiment, the secondary optics adopts a reflective cup, the reflective cup adopts an injection-molded plastic aluminized film, and the plastic material is ABS, PMMA, PC, or the like; or is formed by spinning metal aluminum, and the inner surface is plated with an aluminum film; the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; 3 LED light sources are arranged on the focal plane of the reflecting cup; the LED light source emits light backwards (in the Z-axis negative direction), and the light is reflected by the reflecting surface of the reflecting cup and then emitted out along the Z-axis positive direction; the vertical angle is as small as the horizontal angle, about 5 degrees, and the emergent angle can be adjusted by adjusting the surface shape of the reflecting surface of the reflecting cup and the size of the reflecting cup, so that the angle is within 3-10 degrees; the optical efficiency is high, the light interception performance is good, and the light distribution curve is steep. In the embodiment, the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; the 3 LED light sources are closely arranged on the focal plane of the light reflecting cup and are arranged in a line or a Chinese character pin, and the light emitting direction of the LED light sources is towards the negative Z-axis direction; the light emitting direction of the LED light source is towards the negative Z-axis direction, and the LED light source is reflected by the reflecting cup and projected to the illuminated surface; the illumination optics employs array 2 x 4, and may take other array forms, such as various array patterns, e.g., 2 x 2,2 x 3,2 x 5,2 x 6,3 x 3-6,4 x 4-8,5 x 5-10,6 x 6-10, etc.

Example 2

The utility model provides a four light source uniform lighting optical system, this embodiment adopts 4 LED light sources to arrange into "field" word and anti-light cup and constitutes the uniform lighting optical system of low-angle, 3 shape of face of reflection of light face of anti-light cup 1 adopt paraboloid of revolution, LED light source light emitting area is located the focal plane of reflection of light face, the luminous direction of LED light source is along burden Z axle direction, towards the reflection of light face, the light that the LED light source sent takes place to reflect through the reflection of light face of anti-light cup, follow Z axle positive direction after the reflection and jet out the face of being shone. The optical system can obtain light distribution with a small angle, and the emergent angles in the vertical direction (Y direction or driving direction) and the horizontal direction (X direction or road width direction) are both 5-12 degrees. Since the reflector cup and the light source are symmetrical in the horizontal and vertical directions, the horizontal and vertical angles are the same.

In this embodiment, because figure 8 is only that 4 LED light sources and 1 reflect light the small-angle illumination optical system power that the cup constitutes is less, can not satisfy the demand, so the utility model discloses the small-angle illumination optical system that actually adopts arranges 4 combination arrays shown in figure 8 as shown in figure 9, and this example adopts 2 to 4 arrays to arrange, obtains 32 LED light sources and 8 array optical system that reflect light cup 1, and increase power satisfies the actual lighting demand.

As shown in fig. 10, the distribution diagram of the illuminance of the light spot at a distance of 20 meters can also be seen that the light spot is square, which is just an image of a spliced "tian" square of 4 light sources, the horizontal size and the vertical size of the light spot are the same, the light spot at the illuminated surface is just an image of the light source passing through the light reflecting cup, the distribution of the light spot is uniform, the emergent angle is small, the horizontal angle is about 6 degrees, and the vertical angle is about 6 degrees.

Wherein, the secondary optics adopts a reflecting cup 1, the reflecting cup 1 adopts an injection plastic aluminizer, and the plastic material is ABS, PMMA, PC and the like; or is formed by spinning metal aluminum, and the inner surface is plated with an aluminum film; 4 LED light sources are closely arranged on the focal plane of the reflecting cup according to the shape of Chinese character 'tian'; the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; the LED light source emits light backwards (in the Z-axis negative direction), and the light is reflected by the reflecting surface of the reflecting cup and then emitted out along the Z-axis positive direction; the vertical angle is as small as the horizontal angle, about 6 degrees, and the emergent angle can be adjusted by adjusting the surface shape of the reflecting surface of the reflecting cup and the size of the reflecting cup, so that the angle is within 5-12 degrees; the optical efficiency is high; the light interception is good, and the light distribution curve is steep.

As shown in fig. 11, the utility model discloses the theory of operation adopts 4 LED light sources to arrange into down "T" word and anti-light cup and constitutes small-angle illumination optical system, anti-light cup 1's reflection of light face shape of face adopts the paraboloid of revolution, LED light source light emitting area is located the focal plane of reflection of light face 3, LED light source light emitting direction is for following burden Z axle direction, towards the reflection of light face, the light that the LED light source sent takes place to reflect through the reflection of light face of anti-light cup, follow Z axle positive direction after the reflection and jet out the face of being shone. The optical system can obtain light distribution with a small angle and light spot illumination distribution with an inverted T shape, and the total angle is within 5-12 degrees. Because the light sources are arranged asymmetrically, the light spot illumination distribution is also asymmetric, and the light spot illumination distribution is completely in inverted T-shaped arrangement of the light sources according to the imaging principle.

In the present example shown in fig. 12, a 2-by-4 array arrangement is adopted, so as to obtain an array optical system with 32 LED light sources and 8 reflective cups, and increase power to meet actual lighting requirements. The light spot illumination distribution is inverted T-shaped, the vertical direction angle is small, remote illumination is facilitated, the horizontal angle is about 12 degrees, near monitoring light supplement is facilitated, monitoring snapshot light supplement application is well met, light pollution is greatly reduced, glare is reduced, and potential safety hazards are eliminated.

As shown in fig. 13, the light spot illuminance distribution diagram at a distance of 20 meters can also be seen, the light spot is in an inverted "T" shape, which is just a pieced image of 4 light sources, the light spots are uniformly distributed, the upper emergent angle is small, which is beneficial to far illumination, and the lower angle is large which is beneficial to near illumination.

The secondary optics adopts a reflecting cup, the reflecting cup adopts an injection molding plastic aluminized film, and the plastic material is ABS, PMMA, PC and the like; or is formed by spinning metal aluminum, and the inner surface is plated with an aluminum film; the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; 4 LED light sources are arranged on the focal plane of the reflecting cup in an inverted T shape; the LED light source emits light backwards (in the Z-axis negative direction), and the light is reflected by the reflecting surface of the reflecting cup and then emitted out along the Z-axis positive direction; the vertical angle is as small as the horizontal angle, about 5 degrees, and the emergent angle can be adjusted by adjusting the surface shape of the reflecting surface of the reflecting cup and the size of the reflecting cup, so that the angle is within 3-10 degrees; high optical efficiency, good light interception performance and steep light distribution curve.

As shown in fig. 14, the utility model discloses the theory of operation adopts 4 LED light sources to arrange into "one" word and anti-light cup and constitutes small-angle illumination optical system, anti-light cup's reflection of light face shape of face adopts revolution paraboloid, LED light source light emitting area is located the focal plane of reflection of light face, the luminous direction of LED light source is for following negative Z axle direction, towards the reflection of light face, the light that the LED light source sent takes place to reflect through anti-light cup's reflection of light face, follow Z axle positive direction after the reflection and jet out the illuminated face. The optical system can obtain light distribution with small angle and light spot illumination distribution in the shape of a Chinese character 'yi', the vertical angle is small and is within 3-6 degrees, and the horizontal angle is about 4 times of the vertical angle and is about 12-24 degrees. Because the light sources are arranged asymmetrically, the light spot illumination distribution is also asymmetric, and the light spot illumination distribution is completely arranged in a straight line of the light sources according to the imaging principle.

As shown in fig. 15, an array optical system of 32 LED light sources and 8 reflective cups is obtained by adopting 2 × 4 array arrangement, so as to increase power and meet actual lighting requirements. The light spots are distributed in a shape like a Chinese character 'yi', the angle in the vertical direction is small by about 5 degrees, the remote illumination is facilitated, the horizontal angle is about 20 degrees, the near monitoring light supplement is facilitated, the monitoring snapshot light supplement application is well met, the light pollution is greatly reduced, the glare is reduced, and the potential safety hazard is eliminated.

As shown in fig. 16, the light spot illuminance distribution diagram is a light spot illuminance distribution diagram at a distance of 20 meters, and the light spot can also be seen to be in a shape of a straight line, which is just a spliced image of 4 light sources, so that the light spots are uniformly distributed, the vertical emergent angle is small, longitudinal illumination is facilitated, the horizontal angle is large, and transverse multi-lane monitoring supplementary illumination is facilitated.

In the embodiment, the secondary optics adopts a reflecting cup, the reflecting cup adopts an injection molding plastic aluminizer, and the plastic materials are ABS, PMMA, PC and the like; or is formed by spinning metal aluminum, and the inner surface is plated with an aluminum film; the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; the 4 LED light sources are arranged on the focal plane of the reflection cup in a straight line shape; the LED light source emits light backwards (in a Z-axis negative direction), and the light is reflected by the reflecting surface of the reflecting cup and then emitted out along the Z-axis positive direction; the vertical angle is very small, about 5 degrees, the horizontal angle is about 4 times of the vertical angle, and the emergent angle can be adjusted by adjusting the surface shape of the reflecting surface of the reflecting cup and the size of the reflecting cup, so that the vertical angle is within 3-10 degrees; the optical efficiency is high, the light interception performance is good, and the light distribution curve is steep; the surface shape of the reflecting cup is a paraboloid of revolution or an ellipsoid of revolution, and the paraboloid of revolution is mainly adopted; 4 LED light sources are closely arranged on the focal plane of the reflection cup and arranged in a shape like Chinese character 'tian' or in an inverted 'T' or in a shape like Chinese character 'yi', and the light emitting direction of the LED light sources is towards the negative Z-axis direction; the light emitting direction of the LED light source is towards the negative Z-axis direction, and the LED light source is reflected and projected to the illuminated surface through the reflecting cup; the illumination optics employs array 2 x 4 and may take other array forms, such as various array patterns, e.g. 2 x 2,2 x 3,2 x 5,2 x 6,3 x 3-6,4 x 4-8,5 x 5-10,6 x 6-10, etc.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A multi-light source variable-angle uniform illumination optical system comprises a reflection cup (1), and is characterized in that: the LED lamp set is characterized in that the reflecting surface of the reflecting cup (1) is fixedly connected with an LED lamp set (2), the light emitting surface of the LED lamp set (2) is located on the focus surface of the reflecting cup (1), the reflecting surface shape of the reflecting cup (1) adopts a paraboloid of revolution or an ellipsoid of revolution, and the light emitting direction of the LED lamp set (2) faces the reflecting surface of the reflecting cup (1).

2. The optical system of claim 1, wherein: the LED lamp group (2) adopts a structure that 3 LED light sources are arranged and shaped like a Chinese character 'yi' or 'pin'.

3. The optical system of claim 1, wherein: the LED lamp group (2) adopts a structure that 4 LED light sources are arranged in a shape like Chinese character 'tian' or 'T' or 'yi'.

4. The optical system of claim 1, wherein: the reflective cup (1) adopts an injection molding plastic aluminizer, wherein the plastic material is ABS or PMMA or PC; or is formed by spinning metal aluminum, and the inner surface is plated with an aluminum film.

5. The optical system of claim 2, wherein: an array optical system of 24 LED light sources and 8 reflection cups (1) is obtained by adopting 2-by-4 combined array arrangement, wherein each combined array adopts a structure that the arrangement shape of 3 LED light sources is in a shape like a Chinese character 'yi' or a Chinese character 'pin'.

6. The optical system of claim 3, wherein: the array optical system of 32 LED light sources and 8 reflecting cups (1) is obtained by adopting 2-by-4 combined array arrangement, wherein each combined array adopts a structure that 4 LED light sources are arranged and shaped like a Chinese character 'tian' or 'T' or 'I'.

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