China Dia300mm FL =24mm Optical Fresnel Lens

Dia300mm FL(Focal Length)=24mm Optical Fresnel Lenses

Fresnel lenses are a type of compact lens originally dsigned by French physicist Augustin-Jean Fresnel for lighthouses, which allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. A Fresnel lens can capture more oblique light from a light source, thus allowing the light from a lighthouse equipped with one to be visible over greater distances.

Specifications:

Materials:Optical Glass or Plastic.Diameter range: 1-500mmDimension tolerance: +/0.005mm,+/-0.1mmThickness tolerance: +/-0.005mm,+/-0.1mmParallelism: < 1arcsec(can change for different types and as rquired)Surface quality: 10/5(can change for different types and as required)Coating: Uncoated or Coated(as requried)Other Lenses CPG handle:

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FAQ:
1. What's your payment term?
T/T, Letter of Credit, Paypal, Western Union, etc.
2. What's your minimum order quantity?
1 unit.
3. Could you send free samples?
Your samples fee will be returned when you plack bulk order.
4.What's the delivery time?
15-30 days, it is up to your quantity and soecification and our stock. If in stocks, once you make the payment, your products will be sent within 2 days.
5. What's your price list and discount?
The above price is our reference price, if you would like to know more our exact and discount policy, please contact us directly mobile phone +86 25-85652542
6.Can you OEM or ODM?
Yes, we accept all OEM and ODM.