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Product Name£ºFresnel Lens|Solar energy condenser lens

Fresnel Lens|Solar energy condenser lens
  • Model:Various
  • Dimensions£ºVarious
  • Transmittance£º99%
  • For LED£ºSolar
  • FOV£ºAdjustable
  • PDF£ºLed Lenses-
  • Release Date:2013-08-26
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Product Description

The Fresnel lens reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. An ideal Fresnel lens would have infinitely many such sections. In each section, the overall thickness is decreased compared to an equivalent simple lens. This effectively divides the continuous surface of a standard lens into a set of surfaces of the same curvature, with stepwise discontinuities between them. In some lenses, the curved surfaces are replaced with flat surfaces, with different angle in each section. Such a lens can be regarded as an array of prisms arranged in a circular fashion, with steeper prisms on the edges, and a flat or slightly convex center. In the first (and largest) Fresnel lenses, each section was actually a separate prism. 'Single-piece' Fresnel lenses were later produced, being used for automobile headlamps, brake, parking, and turn signal lenses, and so on. In modern times, computer-controlled milling equipment (CNC) might be used to manufacture more complex lenses. Fresnel lens design allows a substantial reduction in thickness (and thus mass and volume of material), at the expense of reducing the imaging quality of the lens, which is why precise imaging applications such as photography still use conventional bulky lenses. Fresnel lenses are usually made of glass or plastic; their size varies from large (old historical lighthouses, meter size) to medium (book-reading aids, OHP viewgraph projectors) to small (TLR/SLR camera screens, micro-optics). In many cases they are very thin and flat, almost flexible, with thicknesses in the 1 to 5 mm (0.039 to 0.20 in) range.

Datasheet Of Fresnel Lenses

£¨Focal length is constant,the size can be from large to small,so many specifications can be derived£©

No. Part No. Diameter (mm)  Square Focal Length (mm) Thickness (mm) Groove Pitch (mm)
1 HX-FS90 90*90 90 2 0.3
2 HX-FS120A 183*110 120 2 0.3
3 HX-FS120B 120*94 120 2 0.3
4 HX-FS140 140*100 140 2 0.3
5 HX-FS160 183*110 160 2 0.3
6 HX-FS170 200*170 170 2 0.3
7 HX-FS180 183*110 180 2 0.3
8 HX-FS185 183*110 185 2 0.3
9 HX-FS190 150*150 195 2 0.3
10 HX-FS210A 270*270 210 2 0.3
11 HX-FS210B 300*300 210 2 0.3
12 HX-FS220 280*280 220 2 0.3
13 HX-FS310A 270*270 310 2 0.3
14 HX-FS310B 300*300 310 2 0.3
15 HX-FS320A 300*300 320 2 0.3
16 HX-FS320B 240*360 320 2 0.3
17 HX-FS330A 350*350 330 2 0.3
18 HX-FS330B 240*360 330 2 0.3
19 HX-FS350 345*345 350 2 0.3
20 HX-FS370A 260*260 370 2 0.3
21 HX-FS370B 350*350 370 2 0.3
22 HX-FS510A 400*300 510 2 0.5
23 HX-FS510B 240*360 510 2 0.5
24 HX-FS600 400*300 600 2 0.5
25 HX-FS620A 500*500 620 3~5 0.8
26 HX-FS620B 520*520 620 3~5 0.8
27 HX-FS720A 800*720 720 3~5 1
28 HX-FS720B 800*800 720 3~5 1
29 HX-FS890 900*900 890 5 1
30 HX-FS980 1400*700 980 5 1
31 HX-FS1300 1100*1100 1300 5 1
32 HX-FS1500 1200*1100 1500 5 1
33 HX-FS1800 1000*1000 1800 5 1



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