[Source: Gaogong LED 's " LED Good Products" magazine March issue reporter / He Wei]
"Domestic LED lighting companies generally do not have a deep understanding of optical design, especially in street lamps. There is still a certain misunderstanding. It is unscientific to pursue high illumination alone." Shenzhen Kaikoda Photoelectric Co., Ltd. Optical Technology Director Yu Kaitai Reported to reporters the current shortcomings in LED optical design.
At the same time, the penetration rate of the LED lighting application market needs to make concessions on the cost of related accessories. For domestic lens manufacturers, it is difficult to form a large-scale, standardized mass production capability without a unified standard product specification. Control is impossible to talk about.
Price is a key factor, especially in the Chinese market. However, whether it is to fight the low-end users with price wars, or to increase investment in technology research and development and promote product standardization has become a dilemma facing the lens companies.
Deepen optical understanding
At present, most LED light sources are distributed in Lambertian shape, and the central light intensity is relatively strong. The symmetrical circular spot distribution cannot be directly used for road lighting. In order to meet the urban road lighting design standards, most of the LED street lamps need to be designed with secondary optics to produce a rectangular, evenly distributed spot whose light distribution curve needs to be in the shape of a batwing.
The quality of the optical design directly determines the efficiency of the LED street lamp. After some LED street lamps are added with a poorly designed secondary lens, some of the light in the lens has multiple reflection losses or cannot be allocated to an effective area. Low light efficiency. Some lenses have a light spot shape and uniformity, but the light extraction efficiency is reduced by half. In addition, the optical design of the lens also determines whether the street lamp has glare. Some lenses lack reasonable design. Because there is no truncated design, there are still a lot of outgoing light in the range of 70-90 meters along the road, which will give distant vehicles. Or pedestrians cause glare.
However, for a long time, most LED street lamp companies in China have paid more attention to problems such as light efficiency and heat dissipation, but they have insufficient understanding of optical design. At the same time, the national standard for LED street lamps has not yet been formulated, making the secondary optical design of high-power LED lighting products still rough. At present, most of the street lamps currently on the market are assembled by conventional lamps and LED lighting modules, and it is difficult to obtain an ideal light distribution effect and high light utilization efficiency.
“Domestic LED streetlight design is often only one-sided pursuit of high illumination, but does not consider the specific practicality.†Qi Kaitai pointed out that different roads have different optical requirements, such as street lamp height, distance between lampposts, and types of roads (trunk Roads, trunk roads, single-lamp/double-light sections, courtyard plots, etc.) have different requirements for the angle of the lens of the streetlight.
Generally speaking, the illuminating angle specification of the street lamp lens is 60 degrees, 80 degrees, degrees, 120 degrees, the height of the general trunk road light pole is 10-12 m, and the distance between the street lamp poles is 30-35 m, thereby introducing the angle of the street lamp lens. Within the range of 100 to 120 degrees.
The requirements for the street lamp lens are mainly three indicators of light efficiency utilization, concentrating angle and uniformity of the spot. The uniformity of the spot is related to the aesthetics of the road lighting and the safety of driving.
“The best effect of LED street lighting is that in the evening, the car does not need to be illuminated, and the brightness of the street lamp can be used for safe driving.†Kai Kaitai said that this must improve the uniformity of light. At present, the national uniformity of light is the highest value of Mar.2013 BEST LED PRUDUCTS 43 is 0.4, the general street lamp lens can achieve 0.6 or so, and Likoda has a big breakthrough in uniformity within 35 meters. The uniformity was 0.98, the luminous efficiency was 92, and there was no obvious light and dark area on the whole road.
Get rid of low-end homogenization competition
In recent years, domestic lens products have been homogenized and competition at low prices is fierce, which is the norm in the industry.
"Everyone's herd mentality leads to the serious design of LED street lights. The plagiarism of a swarm of bees is not imitated from technology, and the price is desperately killed. There is no minimum and only lower." Yan Kaitai said that most domestic companies do not pay attention to the structural design of products. It’s not the most advanced technology, but the price of who is lower.
However, the bankruptcy of several large-scale LED companies in the industry last year has sounded the alarm for the industry, and it is also a signal that the market is gradually maturing.
Liktec was originally transformed from the technical factory of Guizhou 083 military factory. Since the beginning of the year, he has been immersed in the LED industry, from the confusion that has just entered, to the excitement of the first industry explosion, and then to the frustrating trough. With every change in the industry, Kaikai has become more and more aware of the market.
"The current chaotic situation is a stage that the market development must undergo. Strangle is inevitable. If you can't stop it, you can only be eliminated." Kaikai pointed out that any missing funds, markets, channels, and technologies may be eliminated. Out of the LED industry, the most important thing is that companies must have their own direction. “Licoda is positioning itself as a professional optical solution provider. It relies on years of professional knowledge of lighting to provide customers with reasonable design and light distribution solutions to get rid of low-end homogenization competition.â€
At present, Likoda mainly cooperates with engineering companies to design a matching lens scheme according to different lighting applications to achieve the best light output.
Unfinished , please refer to the March issue of Gaogong LED 's " LED Good Products" magazine.
"Domestic LED lighting companies generally do not have a deep understanding of optical design, especially in street lamps. There is still a certain misunderstanding. It is unscientific to pursue high illumination alone." Shenzhen Kaikoda Photoelectric Co., Ltd. Optical Technology Director Yu Kaitai Reported to reporters the current shortcomings in LED optical design.
At the same time, the penetration rate of the LED lighting application market needs to make concessions on the cost of related accessories. For domestic lens manufacturers, it is difficult to form a large-scale, standardized mass production capability without a unified standard product specification. Control is impossible to talk about.
Price is a key factor, especially in the Chinese market. However, whether it is to fight the low-end users with price wars, or to increase investment in technology research and development and promote product standardization has become a dilemma facing the lens companies.
Deepen optical understanding
At present, most LED light sources are distributed in Lambertian shape, and the central light intensity is relatively strong. The symmetrical circular spot distribution cannot be directly used for road lighting. In order to meet the urban road lighting design standards, most of the LED street lamps need to be designed with secondary optics to produce a rectangular, evenly distributed spot whose light distribution curve needs to be in the shape of a batwing.
The quality of the optical design directly determines the efficiency of the LED street lamp. After some LED street lamps are added with a poorly designed secondary lens, some of the light in the lens has multiple reflection losses or cannot be allocated to an effective area. Low light efficiency. Some lenses have a light spot shape and uniformity, but the light extraction efficiency is reduced by half. In addition, the optical design of the lens also determines whether the street lamp has glare. Some lenses lack reasonable design. Because there is no truncated design, there are still a lot of outgoing light in the range of 70-90 meters along the road, which will give distant vehicles. Or pedestrians cause glare.
However, for a long time, most LED street lamp companies in China have paid more attention to problems such as light efficiency and heat dissipation, but they have insufficient understanding of optical design. At the same time, the national standard for LED street lamps has not yet been formulated, making the secondary optical design of high-power LED lighting products still rough. At present, most of the street lamps currently on the market are assembled by conventional lamps and LED lighting modules, and it is difficult to obtain an ideal light distribution effect and high light utilization efficiency.
“Domestic LED streetlight design is often only one-sided pursuit of high illumination, but does not consider the specific practicality.†Qi Kaitai pointed out that different roads have different optical requirements, such as street lamp height, distance between lampposts, and types of roads (trunk Roads, trunk roads, single-lamp/double-light sections, courtyard plots, etc.) have different requirements for the angle of the lens of the streetlight.
Generally speaking, the illuminating angle specification of the street lamp lens is 60 degrees, 80 degrees, degrees, 120 degrees, the height of the general trunk road light pole is 10-12 m, and the distance between the street lamp poles is 30-35 m, thereby introducing the angle of the street lamp lens. Within the range of 100 to 120 degrees.
The requirements for the street lamp lens are mainly three indicators of light efficiency utilization, concentrating angle and uniformity of the spot. The uniformity of the spot is related to the aesthetics of the road lighting and the safety of driving.
“The best effect of LED street lighting is that in the evening, the car does not need to be illuminated, and the brightness of the street lamp can be used for safe driving.†Kai Kaitai said that this must improve the uniformity of light. At present, the national uniformity of light is the highest value of Mar.2013 BEST LED PRUDUCTS 43 is 0.4, the general street lamp lens can achieve 0.6 or so, and Likoda has a big breakthrough in uniformity within 35 meters. The uniformity was 0.98, the luminous efficiency was 92, and there was no obvious light and dark area on the whole road.
Get rid of low-end homogenization competition
In recent years, domestic lens products have been homogenized and competition at low prices is fierce, which is the norm in the industry.
"Everyone's herd mentality leads to the serious design of LED street lights. The plagiarism of a swarm of bees is not imitated from technology, and the price is desperately killed. There is no minimum and only lower." Yan Kaitai said that most domestic companies do not pay attention to the structural design of products. It’s not the most advanced technology, but the price of who is lower.
However, the bankruptcy of several large-scale LED companies in the industry last year has sounded the alarm for the industry, and it is also a signal that the market is gradually maturing.
Liktec was originally transformed from the technical factory of Guizhou 083 military factory. Since the beginning of the year, he has been immersed in the LED industry, from the confusion that has just entered, to the excitement of the first industry explosion, and then to the frustrating trough. With every change in the industry, Kaikai has become more and more aware of the market.
"The current chaotic situation is a stage that the market development must undergo. Strangle is inevitable. If you can't stop it, you can only be eliminated." Kaikai pointed out that any missing funds, markets, channels, and technologies may be eliminated. Out of the LED industry, the most important thing is that companies must have their own direction. “Licoda is positioning itself as a professional optical solution provider. It relies on years of professional knowledge of lighting to provide customers with reasonable design and light distribution solutions to get rid of low-end homogenization competition.â€
At present, Likoda mainly cooperates with engineering companies to design a matching lens scheme according to different lighting applications to achieve the best light output.
Unfinished , please refer to the March issue of Gaogong LED 's " LED Good Products" magazine.
Single Phase Ac Motor,Ac Single Pole Motors,Single Phase Motor,Single Phase Motor Connection
Changzhou Sherry International Trading Co., Ltd. , https://www.sherry-motor.com