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Multi Fresnel Lens|Solar energy condenser lens

Model:Various
Dimensions：Various
Transmittance：99%
For LED：All kinds of LEDs
FOV：Adjustable
PDF：Led Lenses-
PDF link：Download
Release Date:2013-05-24
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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

	Part No.	HX-FS044350
	Shape Properties	Square
	DIM (mm)	44 x 42
	Thickness (mm)	2.0
	Focal Length (mm)	35
	Groove Pitch (mm)	0.4
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F1050
	Shape Properties	Oval
	DIM (mm)	51.5 x 100.5
	Thickness (mm)	2.0
	Focal Length (mm)	35
	Groove Pitch (mm)	0.5
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F063240
	Shape Properties	Round
	Diameter (mm)	63
	Thickness (mm)	1.4
	Focal Length (mm)	24
	Groove Pitch (mm)	0.26
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F080350
	Shape Properties	Round
	Diameter (mm)	80
	Thickness (mm)	2.0
	Focal Length (mm)	35
	Groove Pitch (mm)	0.5
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-FS15240
	Shape Properties	Square
	DIM (mm)	152.3 x 152.3
	Thickness (mm)	2.0
	Focal Length (mm)	24
	Groove Pitch (mm)	0.3
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F162200
	Shape Properties	Round
	Diameter (mm)	162 (Small Circle DIA 30mm)
	Thickness (mm)	2.0
	Focal Length (mm)	20
	Groove Pitch (mm)	0.1
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F162201
	Shape Properties	Round
	Diameter (mm)	162 (Small Circle DIA 30mm)
	Thickness (mm)	2.0
	Focal Length (mm)	20
	Groove Pitch (mm)	0.1
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F162202
	Shape Properties	Round
	Diameter (mm)	162 (Small Circle DIA 30mm)
	Thickness (mm)	2.0
	Focal Length (mm)	20
	Groove Pitch (mm)	0.1
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F210350
	Shape Properties	Round
	Diameter (mm)	210 (Small Circle DIA 42mm,35mm)
	Thickness (mm)	2.0
	Focal Length (mm)	20
	Groove Pitch (mm)	0.1
	Materials	Optical Grade PMMA
	2D Views

	Part No.	HX-F8438-1
	Shape Properties	Oval
	DIM (mm)	84 x 38 x 2.0
	Thickness (mm)	2.0
	Focal Length (mm)	67.4
	Groove Pitch (mm)	0.25
	Materials	Optical Grade PMMA + Color
	2D Views

	Part No.	HX-F8438-2
	Shape Properties	Oval
	DIM (mm)	84 x 38 x 2.0
	Thickness (mm)	2.0
	Focal Length (mm)	134.8
	Groove Pitch (mm)	0.25
	Materials	Optical Grade PMMA + Color
	2D Views