Fresnel Lens
With our own R&D Center, SenbaSensor can do a lot of basic research, and develop our chinese pirsensor and other products with our unique technologies. Our manufacturing people pay a great deal of attention to the product quality, and our factory has become ISO9001 and ISO14001 certified.
Fresnel lens, also known as threaded lens, Fresnel lens is mostly made of polyolefin material, the surface of the lens is smooth, and the other side is filled with concentric circles from small to large. Its texture is designed to utilize the interference of light and to be based on relative sensitivity and acceptance angle requirements. The quality requirement of the lens is very high. A good lens must have a smooth surface, clear texture. Its thickness varies with the application and normally about 0.6 mm. The lens characteristics are wider surface, thinner and farther detection distance.
As one of the leading large fresnel lens suppliers, there are kinds of large fresnel lens for salessuch as large plastic fresnel lens, plastic fresnel lens, etc.
There are two functions of Fresnel lens: one is the focusing effect; the other is to divide the detection area into several bright and dark areas, so that the moving object entering the detection area can produce the change of heat release on the PIR in the form of temperature change. It is what we called Infrared signal. We can say that fresnel lens help to strengthen the infrared signal and to make PIR work well.
The Fresnel lens is a convex lens that is equivalent to infrared and visible light in many cases, and the effect is better, but the cost is much lower than that of a conventional convex lens. It is often used in applications where accuracy is not critical, such as slide projectors, thin film magnifiers, infrared detectors, etc.
Normally the lens’ shapes are dome and flat. But these years as the smart home is more and more popular, different lens are needed to match with different controllers. Senba can help customers to design and mould the lens they want.
在线联系供应商
Other supplier products
 |
Long Distance 12M Detector Sensor HM412 From Senba Factory | Overview PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. They are sm... |
 |
Analog Output 3- 15V Passive Infrared Sensor D204B | Senba Sensing Technology Co.,Ltd. is a professional pir sensor manufacturers. We provide Infrared Thermopile Sensor, Digital PIR Sensor and so on. ... |
 |
Low Distortion Coupling Linear Optocoupler LCR - 0203 Series for Volume Control and Electrical Coupling | An Overview of Low Distortion Coupling Linear Optocoupler lcr 0203Series for Volume Control and Electrical Coupling Optocoupler is an electronic co... |
 |
Outdoor Human Motion Sensor D203S | Owning very strong R&D Center, Senba can research and develop the pyroelectric infrared sensor independently. Among those pir sensor manufactur... |
 |
PIR Sensors Used in Security Alarms and Automatic Lighting Applications D205B | Owning very strong R&D Center, Senba can research and develop the pyroelectric infrared sensor independently. Among those china pirsensor manuf... |
Same products
 |
China factory Signal control board DK-MCJ3004 for power station | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "China factory Signal control board DK-MCJ3004 for power station Sold by YOYIK. Deyang YOYIK is a... |
 |
Made in China Signal board 6ES7288-5CM01-0AA0 for thermal power plant | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "Made in China Signal board 6ES7288-5CM01-0AA0 for thermal power plant Selection of advanced tech... |
 |
China made Small machine dual LVDT sensor TDZ-1 for power plant | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "China made Small machine dual LVDT sensor TDZ-1 for power plant Deyang YOYIK is a strong technic... |
 |
Linear displacement sensor 181.36.06.G02 power plant | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "China supplier Linear displacement sensor 181.36.06.G02 power plant spare parts Main: hydraulic ... |
 |
China factory Limit switch DE Ll LX918-11L for power station | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | China factory Limit switch DE Ll LX918-11L for power station YOYIK is a research and development,... |
