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{"title":"20mm BK7 Glass Clear Meniscus LED Optical Glass Lens","imgUrl":"https:\/\/img.chinax.com\/nimg\/40\/1a\/db20336677548f852952674702d3-200x200-1\/20mm_bk7_glass_clear_meniscus_led_optical_glass_lens.jpg","attrs":{"Place of Origin":"Shanghai, China","Brand Name":"Advance","Packaging Details":"Vacuum+EVA+Carton","Supply Ability":"10000000 Piece\/Pieces per Month"}}
Dome Infrared Fresnel Lens Led Module 80mm Aacrylic pc Big Underwater Camera Lens For PIR Motion Module
Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the Fresnel lens a common focal length equivalent to a traditional lens, but with a fraction of the thickness. Additionally, because the lens is so thin little light is lost by absorption. Fresnel Lenses can be desirable for use in condenser and lighting systems to collimate and collect light. Fresnel lenses can be used as magnifiers, but this is not recommended unless the thin profile and light weight is absolutely necessary.
Specification
Materials
BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etc
Diameter
1.5~300mm
Radius
R0.8mm-∞
Focal length
-30000mm~+30000mm
Center thickness tolerance
+/-0.01mm
Diameter tolerance
+/-0.005mm
Focal length tolerance
+/-1%
Surface accuracy
N=1~3
Irregularity
ΔN=0.1~0.5
Decenter
3''~1''
Surface quality
10/5~60/40
Coating
Upon request
Application area
Imaging,Lighting,Laser etc
Recommend Products
Company Profile
Shanghai Advance Optical-Electronics Technology Co., Ltd. is a technology-based production enterprise,officially established in September 2009,the plant site located in Qingpu Industrial Park, Shanghai, only half an hour's drive from Shanghai Hongqiao International Airport. The company gathers several excellent technicans in optical industry, has comprehensive supporting capabilities such as optical mechanical and electrical design, processing and sales services, and wholeheartedly provides each customer with high-quality and convenient products and services. Business scope: optical mechanical and electrical module development, precision optical element processing, camera lens design and processing, optical design and optical path optimization solution, technical consultation and after-sales service. Application fields: machine vision, artificial intelligence, biomedical, smart city, high-end monitoring, testing instruments, military equipment, laser etching, special lighting, scientific research institutions, etc.
Company Advantages:
1. Have comprehensive design, production and sales capabilities, and provide customers with one-stop convenient procurement services; 2. It has tens of thousands of optical molds and samples, which can provide customers with fast proofing services with low cost; 3. Be able to participate in the customer's new product research and development early, provide feasible plans and suggestions, and make the project less detours;
Certifications
Exhibition
Packing & Delivery
FAQ
Q: What are your main products or Which fiefd do your products be used? A: We are specialized in optical design.optical element processing,Lenses assembly,Such as Spherical lens,Aspherical lens,Cylindarlens,Reflector mirror,Filter,Rod lens,Camera lenses etc,and our products are wide used to these filed such as imaging,Laser,Lighting etc.
Q: What's your advantage? 1. We have about ten thousands optical modules and fixturesin stock,and employ several outstanding technicians and manager.that will enable to provide customer excellent quality in shortleadtime,also can save the plenty of develop cost for customer. 2. We can help customer to optimize the optical system whichthey dislike,and provide the free optical solution or suggestion.
Q: What's your MOQ? A: 10pcs.
Q: What's your leadtime?
A: 1day for inventory and 25~35days for the new project.
Q: What's your shipping type? A: Usually by Fedex,DHL,TNT,EMS etc or Customer appointed.
Q: What's the payment condition? A:T/T,L/C,VISA,Paypal,Alipay or Negotiation.
Q: What's your quality guarantee period? A: Three years.