-
- Trade Leads
- Trade Services
- B2B Directories
- Trade Connections
- Misc
- Contact Us
A free import export trade leads B2B marketplace since 1996 for manufacturers, suppliers, exporters, importers, buyers, sellers, wholesalers, freight forwarders, shippers, trade shows, exhibits, and export management.
Hello visitor from
USA - 124 visiting from 101 USA 
15 Canada 
4 UK 
2 Belgium 
1 Germany 
1 Hong Kong
Hello visitor from
USA - 124 visiting from 101 USA 15 Canada 4 UK 2 Belgium 1 Germany 1 Hong Kong
Fresnel Lens
Posted at: Offers to Sell and Export | Posted on: Monday 2 September 2019 1:27 pm | Poster last visit: Thursday 14 May 2020 |
Product Category: Main
» Laboratory and Measuring and Observing and Testing Equipment
» Measuring and observing and testing instruments
» Indicating and recording instruments
» Electrical power sensors
» Fresnel Lens
Product Description:
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. As one of the fresnel lens suppliers, Senba can help customers to design and mould the lens they want.
Company Contact:
Contact Name: Sensor
Company Name: Senba Sensing Technology Co., Ltd.
Email:
Tel: 075582594732
Fax:
Street Address: Building 4, Huawan
Industrial Park ,
Baoan, Shenzhen, Shenzhen 518102
China
Website: https://www.senbasensor.com
Member name: Senba
Country:
China
Member Since: 02 September 2019
Total Leads: 26 Senba Import Export Business Leads
Business focus: Fresnel Lens, Passive Infrared Sensor, Ldr Sensor
Chat:
Verify: Safe Import Export Tips
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. As one of the fresnel lens suppliers, Senba can help customers to design and mould the lens they want.
Company Contact:
Contact Name: Sensor
Company Name: Senba Sensing Technology Co., Ltd.
Email:
Tel: 075582594732
Fax:
Street Address: Building 4, Huawan
Industrial Park ,
Baoan, Shenzhen, Shenzhen 518102
China
Website: https://www.senbasensor.com
Member name: Senba
Country:
ChinaMember Since: 02 September 2019
Total Leads: 26 Senba Import Export Business Leads
Business focus: Fresnel Lens, Passive Infrared Sensor, Ldr Sensor
Chat:
Verify: Safe Import Export Tips
Similar Suppliers And Manufacturers Import Export Trade Leads
Fl30-300mm F / 4.0 Zoom Infrared Thermal Imaging Lens Ir Lens K1725 - By EcorTechCoLtd - On Monday 30 May 2022 9:31 am: lens only
coating ar
mechanical shock gjb150 16a
vibration gjb150 18a
Fl55mm F / 1.5 Infrared Lwir-cool Thermal Imaging Lens Ir Lens K1711 - By EcorTechCoLtd - On Monday 30 May 2022 2:23 pm: fl55mm f 1 5 infrared lwir-cool thermal imaging lens ir lens k1711
optics
focal length 55mm
f # 1 5
wavelength 10 3-10 7 amp #956 m
average transmission amp #8805 94%
detector 320*240 30 amp #956 m
back focal....
Microscope Lens Barlow Lens Reduce Increase Working Distance - By chutongelec - On Friday 20 May 2022 2:22 am: lens barlow lens reduce increase working distance barlow lens is a diverging lens that alters the focal length of a microscope and therefore the fi....
Fl20-100mm F / 1.0 Zoom Thermal Imaging Lens Ir Lens K1703 - By EcorTechCoLtd - On Monday 30 May 2022 9:36 am: lens only
coating dlc
mechanical shock gjb150 16a
vibration gjb150 18a
Fl15-300mm F / 4.0 Thermal Imaging Zoom Optical Infrared Camera Lens Ir Lens - By EcorTechCoLtd - On Monday 30 May 2022 9:47 am: lens only
coating ar
mechanical shock gjb150 16a
vibration gjb150 18a
Fl30mm F / 1.09 Mwir-cool Infrared Thermal Imaging Camera Lens Ir Lens K1745 - By EcorTechCoLtd - On Monday 30 May 2022 9:27 am: lens only
coating ar
mechanical shock gjb150 16a
vibration gjb150 18a
Fl15-100mm F / 1.0 / 1.2 Infrared Zoom Thermal Imaging Camera Lens Ir Lens K1716 - By EcorTechCoLtd - On Monday 30 May 2022 9:35 am: lens only
coating dlc
mechanical shock gjb150 16a
vibration gjb150 18a
Fl220mm F / 1.2 Athermalized Thermal Imaging Lens Ir Lens K1726 - By EcorTechCoLtd - On Monday 30 May 2022 2:26 pm: lens only
coating dlc
mechanical shock gjb150 16a
vibration gjb150 18a Electrical power sensors Classification Navigation
Main - Laboratory and Measuring and Observing and Testing Equipment - Measuring and observing and testing instruments - Indicating and recording instruments - Electrical power sensors [7]
TradersCity.com shall not be held liable for any user posted/submitted content including but not limited to trade leads, profiles, images, and any other data. TradersCity.com does not and did not verify any of users posted/submitted data nor is implicitly or explicitly recommending these business offers. TradersCity does not verify truthfulness, accuracy, completeness, nor legality of any businesses, services, and leads posted here. TradersCity does not represent Sellers or Buyers in any transaction between users of the website and is unable to make any opinion in regard to their performance in any transaction. TradersCity neither guarantees nor undertakes in any dispute between sellers and buyers. Protect your business from fraud by trading safely