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What are the light distribution requirements for solar smart street lights
by：ALLTOP
2021-04-13
The application of solar smart street lights is very extensive. Intelligent street lamp light distribution is to make the light project as far as possible to all areas of the illuminated road surface to achieve better distribution. Whether the smart street lamp light distribution plan is accurate and in place is one of the key factors in whether it can replace traditional street lamps. In the road lighting, if the smart street lamp fire source is not distributed, the light type irradiated on the road is a large circular spot, and a lot of light will be scattered. Introduced by Philips Solar Intelligent Street Light Manufacturer.
In order to satisfy the requirements for the brightness, illuminance, and uniformity of the road surface, and as much as possible to distribute most of the light on the road surface to reduce the use rate of the forward lights, and reduce unnecessary waste, it is usually necessary to configure smart street lights. Light, the light pattern or spot formed by the light output from the smart street lamp illuminating the road surface is preferably a rectangle.
One-time light distribution of smart street lights
In the power LED manufacturing process, the use of lens technology during packaging can increase the optical power, reduce the loss of light output, and change the light output characteristics. The packaging lens technology of LEDs has a certain relationship with the primary light distribution of high-power smart street lights. . After excellent packaging lens planning, LED can achieve better light output characteristics. Solar smart street lamp manufacturers choose LED light distribution encapsulated by a double-head lens, which can transform the light intensity output curve of a single LED into a 'batwing' shape, so as to further complete the 'batwing' light distribution of the overall light intensity output curve of the entire street lamp .
Secondary light distribution of smart street lights
Use lenses or reflectors for high-power LEDs in smart street lights to further change the output light characteristics, which is the secondary light distribution of smart street lights. The secondary light distribution of smart street lights mainly has the following conditions. Use the LED secondary light distribution of total reflection lens. The light is emitted from the relatively dense medium to the relatively light sparse medium, and total reflection occurs when the incident angle is greater than the critical angle. This principle is used to plan an axisymmetric total reflection lens. Choose the LED secondary light distribution of Anxian curved lens. In this plan, the solar smart street light manufacturer chose an asymmetrical rectangular light distribution optical element on the XY axis.
There are several methods for three-time light distribution:
(1) Flat light distribution
Smart street lights use asymmetrical rectangular light distribution optical elements (lens or reflector) in the XY direction when planning, because the rectangular light distribution has ended on a single LED optical element, so the entire smart street light only needs to use the LED The module can be placed on the tablet.
(2) Curved light distribution
Multiple LEDs are placed to form an LED module. The LEDs on the LED module use an axisymmetric total reflection lens or reflector for light distribution, and the radiation angle width of the light distribution through the lens or reflector is sufficient to cover it The width of the journey.
(3) Multi-fold light distribution
LED light has excellent directivity. In order to obtain a better light distribution, the projection direction of each group of LEDs should be planned separately to illuminate their respective areas. The simpler way is to use the V-shaped surface method. In the multi-fold light distribution planning, the high-power LEDs of each group in the street lamp are installed on different planes separately. The solar smart street lamp manufacturers adjust the relative viewpoint of each group to obtain the light output characteristics of the street lamp and the approximate rectangular lighting effect, and the distance is satisfied. Requirements in lighting standards.
In order to satisfy the requirements for the brightness, illuminance, and uniformity of the road surface, and as much as possible to distribute most of the light on the road surface to reduce the use rate of the forward lights, and reduce unnecessary waste, it is usually necessary to configure smart street lights. Light, the light pattern or spot formed by the light output from the smart street lamp illuminating the road surface is preferably a rectangle.
One-time light distribution of smart street lights
In the power LED manufacturing process, the use of lens technology during packaging can increase the optical power, reduce the loss of light output, and change the light output characteristics. The packaging lens technology of LEDs has a certain relationship with the primary light distribution of high-power smart street lights. . After excellent packaging lens planning, LED can achieve better light output characteristics. Solar smart street lamp manufacturers choose LED light distribution encapsulated by a double-head lens, which can transform the light intensity output curve of a single LED into a 'batwing' shape, so as to further complete the 'batwing' light distribution of the overall light intensity output curve of the entire street lamp .
Secondary light distribution of smart street lights
Use lenses or reflectors for high-power LEDs in smart street lights to further change the output light characteristics, which is the secondary light distribution of smart street lights. The secondary light distribution of smart street lights mainly has the following conditions. Use the LED secondary light distribution of total reflection lens. The light is emitted from the relatively dense medium to the relatively light sparse medium, and total reflection occurs when the incident angle is greater than the critical angle. This principle is used to plan an axisymmetric total reflection lens. Choose the LED secondary light distribution of Anxian curved lens. In this plan, the solar smart street light manufacturer chose an asymmetrical rectangular light distribution optical element on the XY axis.
There are several methods for three-time light distribution:
(1) Flat light distribution
Smart street lights use asymmetrical rectangular light distribution optical elements (lens or reflector) in the XY direction when planning, because the rectangular light distribution has ended on a single LED optical element, so the entire smart street light only needs to use the LED The module can be placed on the tablet.
(2) Curved light distribution
Multiple LEDs are placed to form an LED module. The LEDs on the LED module use an axisymmetric total reflection lens or reflector for light distribution, and the radiation angle width of the light distribution through the lens or reflector is sufficient to cover it The width of the journey.
(3) Multi-fold light distribution
LED light has excellent directivity. In order to obtain a better light distribution, the projection direction of each group of LEDs should be planned separately to illuminate their respective areas. The simpler way is to use the V-shaped surface method. In the multi-fold light distribution planning, the high-power LEDs of each group in the street lamp are installed on different planes separately. The solar smart street lamp manufacturers adjust the relative viewpoint of each group to obtain the light output characteristics of the street lamp and the approximate rectangular lighting effect, and the distance is satisfied. Requirements in lighting standards.
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