What is an in-depth analysis of high-pressure sodium lamps?
May 15, 2025
In the field of outdoor lighting, High Pressure Sodium Lamp (HPS) is undoubtedly a classic and efficient gas discharge lamp. As a deep cultivator in the lighting industry, our company has in-depth research and rich application experience in high-pressure sodium lamps. Below, we will introduce in detail the relevant knowledge of customized high pressure sodium street lights and our high-quality products.
1. Structure and principle of high-pressure sodium lamp
The core structure of the high-pressure sodium lamp is a high-temperature and corrosion-resistant ceramic arc tube, filled with sodium, mercury, and a small amount of inert gas (such as xenon gas), and equipped with tungsten electrodes at both ends to generate an arc. The outer shell is transparent or coated with fluorescent powder glass, which can isolate external temperature fluctuations and maintain high temperature of the lamp tube. Its working principle is exquisite: after being powered on, the ballast provides high-voltage pulses to ionize xenon gas, forming an arc. The heat of the arc evaporates the solid sodium amalgam, and the pressure rises to about 10 ⁴ Pa to reach a high pressure state. Sodium vapor discharge emits 589 nm yellow light, while mercury vapor broadens the spectrum, achieving a light efficiency of 100-150 lm/W.
2. The core advantage of our high-pressure sodium lamp
1) High luminous efficiency and long lifespan
Our high-pressure sodium lamp 250w 400w HPS Outdoor Street Lights Fixture have excellent high luminous efficiency characteristics, far exceeding traditional incandescent lamps (about 10 lm/W) and fluorescent lamps (60-100 lm/W), which can save users a lot of energy costs. At the same time, its service life is about 24000 hours, greatly reducing maintenance frequency and costs, making it an economical choice for outdoor and industrial lighting places.
2) Stable and reliable quality
Our company strictly controls every aspect of the production process, from screening raw materials to optimizing production processes, striving for excellence. By adopting advanced production equipment and testing technology, we ensure that every high-pressure sodium lamp can meet high-quality standards and provide users with stable and reliable lighting solutions.
3) Professional technical support
Our company has a professional technical team that can provide users with comprehensive technical support and services. We can provide professional advice and solutions based on the actual needs of users, whether it is product selection, installation and debugging, or post maintenance, so that users have no worries.
3. Characteristics and application scenarios of high-pressure sodium lamps
High pressure sodium lamps have the characteristics of high luminous efficiency and long lifespan, but they have poor color rendering (Ra is only 20-30, and objects are prone to distortion), slow start-up (it takes 5-10 minutes to fully light up, and about 1 minute to cool down after restarting), and require a ballast to stabilize the current. In terms of application, it plays an important role in road lighting due to its strong ability to penetrate haze with yellow light, providing clear visibility for nighttime travel. It is also widely used in industrial areas with large areas and high ceilings such as ports, warehouses, and squares to meet the demand for high brightness lighting.
4. Industry Development Trends and Our LED Street Light Products
With the development of China LED street light technology, high-pressure sodium lamps are gradually being replaced by LED lamps in urban road lighting and other fields. However, with high luminous efficiency and low cost, they still have a share in large-scale outdoor lighting. Our company keeps up with the trend and actively develops and promotes LED street lights while deeply cultivating the field of high-pressure sodium lamps. Its LED street lights are energy-saving, environmentally friendly, have a long lifespan, excellent color rendering, and fast start-up, providing an efficient, comfortable, and aesthetically pleasing lighting experience. Whether it's lighting planning for new projects or upgrading old systems, our company can provide professional products and solutions.
Choosing our HPS street light or LED street light products means choosing professionalism, quality, and peace of mind. We will create an ideal lighting environment for you with exquisite technology, high-quality products, and attentive service.
