Fresnel Lens

• 

We have large fresnel lens for sale! 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.

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.

Senbais one of the most professional fresnel lens suppliersin Chinafor more than 15 years. We are the most advanced factory with complete categories. With strong R&D center, there are digital type and analog type, dual elements and four elements for you choose. The market cover domestic market, Korean, Amertica, Turkey and Europe.

Другие товары поставщика

	Intelligent PIR Motion Detector From Senba for Home Security BL612	Intelligent PIR Motion Detector From Senba for Home Security BL612 Overview PIR (Passive Infrared Detector) are used to detect motion object like ...
	Analog PIR Sensor	What is analog temperature and humidity sensor? Output Type Number Of Elements Model Window Size (MM) Detection Range(M) Specialty ...
	Optocoupler Semiconductor Device LCR-0202 Series for Electric Circuit	Overview Optocoupler is a Optoelectronic devices which use the current changes to control the resistance change. It is a Linear optocoupler which ...
	Diam 5MM Photoresistor φ5series for Led Dimmer	Overview Photoresistor is a resistor which made of semiconductor material,and the conductance changes with luminance variation .The photoresistor c...
	Linear Light Sensor	Linear Light Sensor, we also call it photoresistor light sensoror phototransistor. The chip integrated inside the ldr light sensoris very sensitive...

Похожие товары

	AIT500-SG High-Precision Current Sensor Transducer	Продавец: Shenzhen Hangzhi Precision Electronics Co., Ltd	Датчик AIT500-SG обладает высоким коэффициентом усиления и точностью измерений во всем диапазоне ...
	JWA2-M Oil Micro Moisture Sensor	Продавец: Shenzhen Joinwe Smart Co.,Ltd	JWA2-M micro moisture sensorcan quickly and accurately detect oil water activity (moisture satura...
	Made in China Displacement sensor 4000TDG for thermal power plant	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"Made in China Displacement sensor 4000TDG for thermal power plant YOYIK professional production ...
	China made Control System LVDT 5000TDGN for power plant	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"China made Control System LVDT 5000TDGN for power plant Dongfang Yoyik has advanced technology a...
	China supplier main control board APF7.820.117A-A power plant spare parts	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"China supplier main control board APF7.820.117A-A power plant spare parts Dongfang Yoyik is spec...