搜索
imgboxbg

News Center

Exciting information for you

科思
/
/
About the development of semiconductor LED lighting (2)
NEWS

News Center

About the development of semiconductor LED lighting (2)

(Summary description) LED future technology development trend The characteristics of LEDs are small and light, low driving voltage, full color, long life, high efficiency, vibration resistance, and easy light control, which provide excellent conditions for designing lighting systems for different places and purposes. People are accustomed to looking at things in sunlight. For general lighting, people mainly need light sources that are close to the quality of sunlight, so white LEDs are an important indicator of semiconductor lighting technology. Due to the low power and low brightness of a single LED, it is not suitable to be used alone. For this reason, multiple LEDs must be assembled together to design a practical LED lighting system. However, there is still a certain distance between white LEDs and general lighting requirements, and there are still many technical and cost problems that need to be solved urgently. Main technical overview of semiconductor lighting system 1) Thermal management of lighting systems LEDs are generally referred to as cold light sources, because the principle of LED light-emitting is that electrons directly emit photons through recombination without the need for heat. However, due to the existence of Joule heat, LEDs are accompanied by heat while emitting light, and for high-power and multiple LED applications, the heat accumulates and cannot be underestimated. LEDs are different from traditional lighting such as incandescent lamps and fluorescent lamps. Light source, too high temperature will shorten or even terminate its service life. Moreover, LED is a temperature-sensitive device. When the temperature rises, its efficiency drops sharply. Therefore, system structure design and heat dissipation technology development are also issues that LED applications need to face. Since forced air cooling is generally not desirable in light sources, heat sinks and other methods of enhancing natural convection cooling play an increasingly important role in LED lamp and light source designs as input electrical power increases. 2) Improve color rendering At present, white light LEDs generally use blue light-emitting LEDs superimposed with yellow light-emitting yttrium aluminum garnet (YAG) phosphors excited by blue light to synthesize white light. Since its luminescence spectrum only contains blue and yellow spectrums, there are problems of high color temperature and low color rendering index, which do not meet the requirements of general lighting. The sensitivity of the human eye to chromatic aberration is much higher than that of light intensity. For lighting, the color rendering of the light source is often more important than the luminous efficiency. Therefore, adding an appropriate amount of red-emitting phosphor powder and maintaining a high luminous efficiency is an important issue in LED white light illumination. 3) Secondary optical design of lighting system Traditional lamps and lanterns have long used incandescent and fluorescent light sources as reference objects to determine the optical and shape standards of lamps. Therefore, LED lighting systems should consider abandoning traditional lamps and LED light-emitting modules. LED light sources are specially designed for different lamps. The design of the optical system mainly includes the following aspects: ① According to the requirements of lighting objects and luminous flux, determine the shape of the optical system, the number of LEDs and the size of the power; ② Combine several LED light-emitting tubes to design a point light source, a ring light source or For the "secondary light source" of the surface light source, the lighting optical system is calculated according to the combined secondary light source; 3. The control of the light distribution of each LED tube on the "secondary light source" that constitutes the lighting optical system design is very important. Since the light beam emitted by the LED is concentrated, it is easier to control, and no reflector is needed to focus the light, which is beneficial to reduce the depth of the lamp. For example, using a flat mirror optical system, only 1-2 LEDs can be used to illuminate a large surface, and the depth of the lamp is very thin; and using light guide technology, the LED is directly installed next to the light guide, which can greatly reduce the light source and other components. Occupied volume, made into ultra-thin lamps. The above content is edited and reprinted by Nanjing Tansu Optoelectronics www.njtan suo.com Our company is the first company in China to use long strip flameproof LED roadway lights for mine lighting. Also produces LED downlights, LED ceiling lights, LED street lights, LED landscape lights, etc.

About the development of semiconductor LED lighting (2)

(Summary description)

LED future technology development trend

The characteristics of LEDs are small and light, low driving voltage, full color, long life, high efficiency, vibration resistance, and easy light control, which provide excellent conditions for designing lighting systems for different places and purposes. People are accustomed to looking at things in sunlight. For general lighting, people mainly need light sources that are close to the quality of sunlight, so white LEDs are an important indicator of semiconductor lighting technology. Due to the low power and low brightness of a single LED, it is not suitable to be used alone. For this reason, multiple LEDs must be assembled together to design a practical LED lighting system. However, there is still a certain distance between white LEDs and general lighting requirements, and there are still many technical and cost problems that need to be solved urgently.

Main technical overview of semiconductor lighting system

1) Thermal management of lighting systems

LEDs are generally referred to as cold light sources, because the principle of LED light-emitting is that electrons directly emit photons through recombination without the need for heat. However, due to the existence of Joule heat, LEDs are accompanied by heat while emitting light, and for high-power and multiple LED applications, the heat accumulates and cannot be underestimated. LEDs are different from traditional lighting such as incandescent lamps and fluorescent lamps. Light source, too high temperature will shorten or even terminate its service life. Moreover, LED is a temperature-sensitive device. When the temperature rises, its efficiency drops sharply. Therefore, system structure design and heat dissipation technology development are also issues that LED applications need to face. Since forced air cooling is generally not desirable in light sources, heat sinks and other methods of enhancing natural convection cooling play an increasingly important role in LED lamp and light source designs as input electrical power increases.

2) Improve color rendering

At present, white light LEDs generally use blue light-emitting LEDs superimposed with yellow light-emitting yttrium aluminum garnet (YAG) phosphors excited by blue light to synthesize white light. Since its luminescence spectrum only contains blue and yellow spectrums, there are problems of high color temperature and low color rendering index, which do not meet the requirements of general lighting. The sensitivity of the human eye to chromatic aberration is much higher than that of light intensity. For lighting, the color rendering of the light source is often more important than the luminous efficiency. Therefore, adding an appropriate amount of red-emitting phosphor powder and maintaining a high luminous efficiency is an important issue in LED white light illumination.

3) Secondary optical design of lighting system

Traditional lamps and lanterns have long used incandescent and fluorescent light sources as reference objects to determine the optical and shape standards of lamps. Therefore, LED lighting systems should consider abandoning traditional lamps and LED light-emitting modules. LED light sources are specially designed for different lamps. The design of the optical system mainly includes the following aspects: ① According to the requirements of lighting objects and luminous flux, determine the shape of the optical system, the number of LEDs and the size of the power; ② Combine several LED light-emitting tubes to design a point light source, a ring light source or For the "secondary light source" of the surface light source, the lighting optical system is calculated according to the combined secondary light source; 3. The control of the light distribution of each LED tube on the "secondary light source" that constitutes the lighting optical system design is very important.

Since the light beam emitted by the LED is concentrated, it is easier to control, and no reflector is needed to focus the light, which is beneficial to reduce the depth of the lamp. For example, using a flat mirror optical system, only 1-2 LEDs can be used to illuminate a large surface, and the depth of the lamp is very thin; and using light guide technology, the LED is directly installed next to the light guide, which can greatly reduce the light source and other components. Occupied volume, made into ultra-thin lamps.

The above content is edited and reprinted by Nanjing Tansu Optoelectronics www.njtan suo.com

Our company is the first company in China to use long strip flameproof LED roadway lights for mine lighting. Also produces LED downlights, LED ceiling lights, LED street lights, LED landscape lights, etc.


Information

LED future technology development trend

The characteristics of LEDs are small and light, low driving voltage, full color, long life, high efficiency, vibration resistance, and easy light control, which provide excellent conditions for designing lighting systems for different places and purposes. People are accustomed to looking at things in sunlight. For general lighting, people mainly need light sources that are close to the quality of sunlight, so white LEDs are an important indicator of semiconductor lighting technology. Due to the low power and low brightness of a single LED, it is not suitable to be used alone. For this reason, multiple LEDs must be assembled together to design a practical LED lighting system. However, there is still a certain distance between white LEDs and general lighting requirements, and there are still many technical and cost problems that need to be solved urgently.

Main technical overview of semiconductor lighting system

1) Thermal management of lighting systems

LEDs are generally referred to as cold light sources, because the principle of LED light-emitting is that electrons directly emit photons through recombination without the need for heat. However, due to the existence of Joule heat, LEDs are accompanied by heat while emitting light, and for high-power and multiple LED applications, the heat accumulates and cannot be underestimated. LEDs are different from traditional lighting such as incandescent lamps and fluorescent lamps. Light source, too high temperature will shorten or even terminate its service life. Moreover, LED is a temperature-sensitive device. When the temperature rises, its efficiency drops sharply. Therefore, system structure design and heat dissipation technology development are also issues that LED applications need to face. Since forced air cooling is generally not desirable in light sources, heat sinks and other methods of enhancing natural convection cooling play an increasingly important role in LED lamp and light source designs as input electrical power increases.

2) Improve color rendering

At present, white light LEDs generally use blue light-emitting LEDs superimposed with yellow light-emitting yttrium aluminum garnet (YAG) phosphors excited by blue light to synthesize white light. Since its luminescence spectrum only contains blue and yellow spectrums, there are problems of high color temperature and low color rendering index, which do not meet the requirements of general lighting. The sensitivity of the human eye to chromatic aberration is much higher than that of light intensity. For lighting, the color rendering of the light source is often more important than the luminous efficiency. Therefore, adding an appropriate amount of red-emitting phosphor powder and maintaining a high luminous efficiency is an important issue in LED white light illumination.

3) Secondary optical design of lighting system

Traditional lamps and lanterns have long used incandescent and fluorescent light sources as reference objects to determine the optical and shape standards of lamps. Therefore, LED lighting systems should consider abandoning traditional lamps and LED light-emitting modules. LED light sources are specially designed for different lamps. The design of the optical system mainly includes the following aspects: ① According to the requirements of lighting objects and luminous flux, determine the shape of the optical system, the number of LEDs and the size of the power; ② Combine several LED light-emitting tubes to design a point light source, a ring light source or For the "secondary light source" of the surface light source, the lighting optical system is calculated according to the combined secondary light source; 3. The control of the light distribution of each LED tube on the "secondary light source" that constitutes the lighting optical system design is very important.

Since the light beam emitted by the LED is concentrated, it is easier to control, and no reflector is needed to focus the light, which is beneficial to reduce the depth of the lamp. For example, using a flat mirror optical system, only 1-2 LEDs can be used to illuminate a large surface, and the depth of the lamp is very thin; and using light guide technology, the LED is directly installed next to the light guide, which can greatly reduce the light source and other components. Occupied volume, made into ultra-thin lamps.

The above content is edited and reprinted by Nanjing Tansu Optoelectronics www.njtan suo.com

Our company is the first company in China to use long strip flameproof LED roadway lights for mine lighting. Also produces LED downlights, LED ceiling lights, LED street lights, LED landscape lights, etc.

Scan the QR code to read on your phone

What are the characteristics of LED roadway lights? Do you know the installation method and precautions? Take a look!

What are the characteristics of LED roadway lights? Do you know the installation method and precautions? Take a look!

  As people's requirements for lamps are getting higher and higher, a new type of lamps called LED lamps are favored by people. LED is a kind of light-emitting diode. As a light source for illuminants, it has high light efficiency and long life. To achieve multi-purpose lighting, and softened, it will not cause dazzling or other uncomfortable reactions, so many public areas will use this kind of light, such as LED roadway lights, because there are many people on the road, so it is necessary to To install soft lamps that will not hurt the eyes, what are the characteristics of LED road lights? Do you know its installation methods and precautions? Let's follow the editor to learn about it.    Features of LED roadway lights: 1. The color purity of LED roadway lamps is high; at present, LED products cover almost the entire visible spectrum range, and the color purity is high. 2. LED roadway lamps have a long life. The actual life of LED is more than 50,000 hours, which is several times or even dozens of times that of general light sources. 3. The light source of LED roadway lamps does not contain mercury, and the light beam does not contain ultraviolet rays. 4. It is solid luminescence, good shock resistance, firm and reliable. 5. It also has the characteristics of energy saving, economical and maintenance-free. 6. LED has strong luminous directionality, high luminous flux utilization rate, and small size, which is easy to design and control light intensity distribution of LED lamps. 7. LED roadway lamps can be powered by DC low voltage, which is safe and reliable. 8. The LED is not limited by the start-up temperature, it can be started temporarily, usually a few ms, and can temporarily achieve full luminous flux output.   Installation method and precautions of LED roadway lights: 1. Installation method: 1. First, determine the installation position and method of the lamps according to the actual needs of the work site, and then prepare the corresponding length of Φ8~Φ14 mm three-core cables according to the distance from the lamps to the power contacts. 2. Open the set screw on the side of the upper cover of the lamp, then loosen the compression nut of the cable inlet of the lamp, open the upper cover, and lead the power cables through the compression nut to the internal terminal, and connect according to the method shown in the figure. Fix it, and then tighten the cable compression nut and the upper cover of the lamp. 3. The LED roadway lights are enclosure-free. If the lamps themselves are not bright, generally communicate with the manufacturer for direct replacement or return to the factory for maintenance. 2. Notes: 1. The power supply must be cut off before dismantling the lamp. 2. It is strictly forbidden to open it with electricity. 3. During use, the surface of the lamp has a certain temperature rise, which is a normal phenomenon; the center of the transparent part has a high temperature and should not be touched. 4. When installing lamps, the lamps should be safely grounded nearby. The above are the characteristics of LED roadway lights, as well as its installation methods and precautions. Relevant staff must pay attention to the problems during installation to ensure their personal safety.
What are the requirements for landscape lighting? This arrangement can get better results!

What are the requirements for landscape lighting? This arrangement can get better results!

  Landscape lighting is designed and created artificially to make it more artistic or aesthetic under the action of lighting, so that ordinary night scenes are full of exotic cultural atmosphere. Landscape lights should be the same color as the environment. Using light for color design is one of the key technologies in architectural design to reflect architectural cultural characteristics, and it has great benefits for architectural lighting. So what are the requirements for landscape lighting? It's going to do it! Take a look!     What are the requirements for landscape lighting? 1. Some important public buildings, historical relics, commercial buildings, square sculptures, or some special road signs (LANDMARK), bridges or MRT stations and other transportation facilities can be landscaped at night, so that the city night scene can be illuminated in addition to neon lights. There are different colors. 2. After reasonable planning, highlighting the landmark buildings, illuminating the road network, the outline of the city can be seen at night. Every city has its own unique cultural atmosphere, and it must be designed in a targeted manner. It cannot blindly imitate and imitate. It is always the shadow of others and has no bright spot. 3. A complete lighting project should have changes in spring, summer, autumn and winter, not just some important festivals. This reflects the unique charm and cultural atmosphere of a city!     Landscape lighting to do this: 1. With the continuous development of urban planning and construction and the continuous improvement of high-tech levels, the economic development of cultural tourism industry lighting projects has enriched its connotation. The lighting project of the scenic spot not only stipulates the light intensity, chromaticity, color rendering index, and the visual impact of the natural environment, which is pleasing to the eye, but also changes with the change of the scenery. 2. It has important practical significance to ensure the normal operation of lighting equipment in major cities and achieve better lighting effects. It mainly includes scientific management methods and legal management. Using modern control technology to carry out scientific management, not only to ensure the lighting rate and equipment integrity rate, but also to be economical and practical to achieve better lighting effects. 3. The lighting design of the building lighting project should proceed from the aesthetic point of view of the project building. In the design plan, the facade of the main building and the sub-building should be defined, and different actual lighting effects should be used to clarify the project sequence. The practical effects of various aspect ratios and different distances are more abundant.     The above is what are the requirements for landscape lighting? What it wants to do, if you want to know more information, you can pay attention to our later article updates to learn. Note: Some pictures are from the Internet, if there is any infringement, please contact to delete!
What are the characteristics of landscape lighting projects? How should it become environmentally friendly?

What are the characteristics of landscape lighting projects? How should it become environmentally friendly?

  Now many places are vigorously building landscape lighting projects, because it can not only make the night scene of the city more beautiful, but also attract more tourists to visit through the construction of night scenes, etc. What are the needs of this project? What characteristics are we going to understand? I will give you a detailed introduction in this article. In the process of building a landscape lighting project, it is also necessary to pay attention to making the landscape lighting project more environmentally friendly, so as to meet the current environmental protection concept of low carbon emissions!   What are the characteristics of landscape lighting? 1. The construction of landscape lighting in a city is a must, it can bring people spiritual pleasure and satisfaction. For example, lights can create and reshape regional landscapes, making night and day bloom different and wonderful, bringing people great spiritual enjoyment and stimulating the development of the local economy. 2. However, as an important element closely related to people's lives, landscape lighting cannot be done blindly, but must be targeted. Lighting is mainly used for services, serving the economy, cities and even various formats. Of course, in the final analysis, it is to serve people. Therefore, lighting needs to be people-oriented and serve various needs caused by people. 3. Night economy and night travel have great development prospects in the future. Therefore, it is an inevitable trend to "light up" cities and landscapes and create business cards for nighttime economy. As a particularly targeted customized design process, cultural and creative lighting is more conducive to creating independent IP and representative projects, and the prospects are promising. 4. As for the breakthrough in the future development of landscape lighting, the editor believes that we should start from three aspects. One is to return to the essence, do things according to the rules of industry development, and do not blindly expand the scale; Make planning and construction more reasonable and effective; the third is to practice internal skills diligently to consolidate the foundation.   How can landscape lighting projects become environmentally friendly?   1. Strengthen public consultation to realize the unity of top-level design and insisting on asking and considering the people   Landscape lighting needs to follow the people-oriented design concept, not blindly pursuing beauty and ignoring the impact on people's daily life, especially the residential area and its surrounding landscape lighting should be considered and designed with the comfort of living as the center, and landscape lighting should be Use soft and low color temperature lamps to avoid harsh light coming directly into your eyes. In functional lighting planning and landscape lighting planning, more emphasis is placed on citizen experience.   2. Implement dark night protection and lead the ecological restoration and dark night economy at night   It is helpful for ecological restoration at night, and the lights of landscape lighting cannot break the laws of nature. For observatories with specific requirements, the theme of observing the night environment and the dark environment should be based on the location and environment of the illuminated scene to determine the location, illumination angle, quantity and arrangement of lamps to avoid interfering light and glare, and reduce light pollution. And the starry sky at night. To sum up, the above is the relevant knowledge about landscape lighting project introduced by Xiaobian. When designing this project, you need to operate according to the knowledge suggested by Xiaobian!

contact us

No. 10 Kaicheng Road, Qilin Gate, Jiangning District, Nanjing City, Jiangsu Province, China

QR code

Scan it

Follow us

Copyright © 2021 Nanjing Tansuo Optoelectronics Co., Ltd. All rights reserved     Powered by: www.300.cn  |   苏ICP备07006102号-1