Prix FOB
Obtenir le dernier prix1 ~ 100 / Piece ( Negotiable )
|10 Piece Minimum Order
Pays:
China
N ° de modèle:
Fresnel-1
Prix FOB:
1 ~ 100 / Piece ( Negotiable ) Obtenir le dernier prix
Localité:
-
Prix de commande minimale:
1 per Piece
Commande minimale:
10 Piece
Packaging Detail:
carton box
Heure de livraison:
7-25days
Capacité de Fournir:
10000 Piece per Month
Payment Type:
T/T, L/C
Groupe de produits :
Personne àcontacter June
Wuxi, Jiangsu
Optica glass Fresnel lens for LED,Projector,imagerÂÂ
Fresnel
lens: It is
a type of lens originally developed by French physicist
Augustin-Jean Fresnel for lighthouses.The design of Fresnel
lens enables the construction of lenses of large aperture and
short focal length without the weight and volume of material that
would be required in conventional lens design. Compared to
conventional bulky lenses, the Fresnel lens is much thinner,
larger, and flatter, capturing more oblique light from a light
source.
Details:Compared to conventional
bulky lenses, the Fresnel lens reduces the amount of material
required compared to a conventional spherical lens by breaking the
lens into a set of concentric annular sections known as "Fresnel
zones", which are theoretically limitless. In the first variations
of the lens, each zone was actually a different
prism.ÂÂ
Though a Fresnel
lens might look like a single piece of glass, closer examination
reveals that it is many small pieces. For each of these zones, the
overall thickness of the lens is decreased, effectively chopping
the continuous surface of a standard lens into a set of surfaces of
the same curvature, with discontinuities in steps between
them.ÂÂ
In fact this
product can be regarded as an array of prisms positioned in a
circular fashion, with steeper prisms on the edges and a near flat
convex center. Fresnel lenses are usually made of glass or plastic;
their size varies from small to large. Since plastic lenses can be
made larger than glass lenses, as well as being much cheaper and
lighter, they are used to concentrate sunlight in multiple
uses.
Material:3.3
borosilocate glass,a
kind of optical glass.It has resistance to high temperature
and high pressure
. borosilocate also has good chemical stability.
ÂÂ
ÂÂ
size(mm):according to customer's requirements, within dia.**0mmÂÂ
common specifications:
Φ*0 Φ*0  Φ**0  Φ **2  Φ **0  Φ**0  Φ**0  Φ**2  Φ**5  Φ**0  Φ**0  Φ**0 etc.,below dia.**0mm
If you want to see the sample, you must provide us your design
drawing.
Our products:
ÂÂ
| Pays: | China |
| N ° de modèle: | Fresnel-1 |
| Prix FOB: | 1 ~ 100 / Piece ( Negotiable ) Obtenir le dernier prix |
| Localité: | - |
| Prix de commande minimale: | 1 per Piece |
| Commande minimale: | 10 Piece |
| Packaging Detail: | carton box |
| Heure de livraison: | 7-25days |
| Capacité de Fournir: | 10000 Piece per Month |
| Payment Type: | T/T, L/C |
| Groupe de produits : | Fresnel |
