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A typical Fresnel Lens is made up of many small narrow concentric rings. Theoretically speaking, each ring can be considered as an individual small lens that bends the light path.

In fact, the curvature in each ring is approximated by a flat surface so that each ring behaves like an individual wedge prism:

The advantage of using a Fresnel lens is its compact size compared with a conventional lens. Common usage includes overhead projectors, pocket-size magnifiers and motion detectors. The word "Fresnel" comes from the person who first used this design to construct lighthouse lenses, Augustin-Jean Fresnel, in 1820. The idea of dividing a lens surface into concentric rings in order to reduce weight and size, however, can be dated back to 1748 by Georges-Louis Leclerc.

Fresnel Lenses can be made from plastic or glass. There are also different design variations such as Positive Fresnel Lens, Negative Fresnel Lens, Cylindrical Fresnel Lens, Fresnel Lens Array, Linear Fresnel Lens, Lenticular Lens and Fresnel Prism.

The following table lists the standard Fresnel lenses that AWI supplies. Custom-made Fresnel lenses are also available. Fresnel lenses can also be cut to specific sizes as requested.

CIRCULAR FRESNEL LENSES
Part Number	Material	Focal Length		Pitch		Diameter		Thickness		Size
		mm	in	mm	in	mm	in	mm	in	mm	in
E10378-03-0.1	Acrylic	3	0.118	0.1	0.0039	15	0.591	2.0	0.079	15 X 15	0.591x0.591
E10378-04-0.1	Acrylic	4	0.157	0.1	0.0039	20	0.787	2.0	0.079	20 X 20	0.787x0.787
E10378-05-0.1	Acrylic	5	0.197	0.1	0.0039	25	0.984	2.0	0.079	25 X 25	0.984x0.984
E10378-06-0.1	Acrylic	6	0.236	0.1	0.0039	30	1.181	2.0	0.079	30 X 30	1.181x1.181
E10378-07-0.1	Acrylic	7	0.276	0.1	0.0039	35	1.378	2.0	0.079	35 X 35	1.378x1.378
E10378-08-0.1	Acrylic	8	0.315	0.1	0.0039	40	1.575	2.0	0.079	40 X 40	1.575x1.575
E10378-09-0.1	Acrylic	9	0.354	0.1	0.0039	45	1.772	2.0	0.079	45 X 45	1.772x1.772
E10378-10-0.1	Acrylic	10	0.394	0.1	0.0039	50	1.969	2.0	0.079	50 X 50	1.969x1.969
E10378-10-0.2	Acrylic	10	0.394	0.2	0.0079	40	1.575	2.0	0.079	40 X 40	1.575x1.575
E10378-11-0.1	Acrylic	11	0.433	0.1	0.0039	55	2.165	2.0	0.079	55 X 55	2.165x2.165
E10378-12-0.1	Acrylic	12	0.472	0.1	0.0039	60	2.362	2.0	0.079	60 X 60	2.362x2.362
E10378-13-0.1	Acrylic	13	0.512	0.1	0.0039	65	2.559	2.0	0.079	65 X 65	2.559x2.559
E10378-14-0.1	Acrylic	14	0.551	0.1	0.0039	70	2.756	2.0	0.079	70 X 70	2.756x2.756
E10378-15-0.1	Acrylic	15	0.591	0.1	0.0039	75	2.953	2.0	0.079	75 X 75	2.953x2.953
E10378-20-0.1	Acrylic	20	0.787	0.1	0.0039	100	3.937	2.0	0.079	100 X 100	3.937x3.937
E10378-20-0.5	Acrylic	20	0.787	0.5	0.0197	100	3.937	2.0	0.079	100 X 100	3.937x3.937
E10378-25-0.2	Acrylic	25	0.984	0.2	0.0079	125	4.921	2.0	0.079	125 X 125	4.921x4.921
E10378-30-0.5	Acrylic	30	1.181	0.5	0.0197	100	3.937	2.0	0.079	100 X 100	3.937x3.937
E10378-30-0.2	Acrylic	30	1.181	0.2	0.0079	150	5.906	2.0	0.079	150 X 150	5.906x5.906
E10378-35-0.5	Acrylic	35	1.378	0.5	0.0197	110	4.331	2.0	0.079	110 X 110	4.331x4.331
E10378-35-0.25	Acrylic	35	1.378	0.25	0.0098	175	6.890	2.0	0.079	175 X 175	6.890x6.890
E10378-40-0.5	Acrylic	40	1.575	0.5	0.0197	100	3.937	2.0	0.079	100 X 100	3.937x3.937
E10378-40-0.25	Acrylic	40	1.575	0.25	0.0098	200	7.874	2.0	0.079	200 X 200	7.874x7.874
E10378-45-0.3	Acrylic	45	1.772	0.3	0.0118	110	4.331	2.0	0.079	110 X 110	4.331x4.331
E10378-45-0.3	Acrylic	45	1.772	0.3	0.0118	225	8.858	2.0	0.079	225 X 225	8.858x8.858
E10378-50-0.5	Acrylic	50	1.969	0.5	0.0197	100	3.937	2.0	0.079	100 X 100	3.937x3.937
E10378-50-0.3	Acrylic	50	1.969	0.3	0.0118	250	9.843	2.0	0.079	250 X 250	9.843x9.843
E10378-60	Acrylic	60	2.362	0.5	0.0197	110	4.331	2.0	0.079	110 X 110	4.331x4.331
E10378-70	Acrylic	70	2.756	0.5	0.0197	140	5.512	2.0	0.079	140 X 140	5.512x5.512
E10378-80	Acrylic	80	3.150	0.5	0.0197	160	6.299	2.0	0.079	160 X 160	6.299x6.299
E10378-90	Acrylic	90	3.543	0.5	0.0197	180	7.087	2.0	0.079	180 X 180	7.087x7.087
E10378-100	Acrylic	100	3.937	0.5	0.0197	200	7.874	2.0	0.079	200 X 200	7.874x7.874
E10378-110	Acrylic	110	4.331	0.5	0.0197	220	8.661	2.0	0.079	220 X 220	8.661x8.661
E10378-120	Acrylic	120	4.724	0.5	0.0197	240	9.449	2.0	0.079	240 X 240	9.449x9.449
E10378-130	Acrylic	130	5.118	0.5	0.0197	260	10.236	2.0	0.079	260 X 260	10.236x10.236
E10378-140	Acrylic	140	5.512	0.5	0.0197	280	11.024	2.0	0.079	280 X 280	11.024x11.024
E10378-150	Acrylic	150	5.906	0.5	0.0197	300	11.811	2.0	0.079	300 X 300	11.811x11.811
E10378-158	Acrylic	158	6.220	0.5	0.0197	200	7.874	2.0	0.079	200 X 200	7.874x7.874
E10378-160	Acrylic	160	6.299	0.5	0.0197	320	12.598	2.0	0.079	360 X 360	14.173x14.173
E10378-170	Acrylic	170	6.693	0.5	0.0197	340	13.386	2.0	0.079	340 X 340	13.386x13.386
E10378-175	Acrylic	175	6.890	0.5	0.0197	300	11.811	2.0	0.079	300 X 300	11.811x11.811
E10378-180	Acrylic	180	7.087	0.5	0.0197	360	14.173	2.0	0.079	360 X 360	14.173x14.173
E10378-190	Acrylic	190	7.480	0.5	0.0197	380	14.961	2.0	0.079	380 X 380	14.961x14.961
E10378-200	Acrylic	200	7.874	0.5	0.0197	400	15.748	2.0	0.079	400 X 400	15.748x15.748
E10378-225	Acrylic	225	8.858	0.5	0.0197	400	15.748	2.0	0.079	400 X 400	15.748x15.748
E10378-250	Acrylic	250	9.843	0.5	0.0197	500	19.685	2.0	0.079	500 X 500	19.685x19.685
E10378-275	Acrylic	275	10.827	0.5	0.0197	400	15.748	2.0	0.079	400 X 400	15.748x15.748
E10378-286	Acrylic	286	11.260	0.5	0.0197	250	9.843	2.0	0.079	250 X 250	9.843x9.843
E10378-300	Acrylic	300	11.811	0.5	0.0197	300	11.811	2.0	0.079	300 X 300	11.811x11.811
E10378-325	Acrylic	325	12.795	0.5	0.0197	325	12.795	2.0	0.079	400 X 400	15.748x15.748
E10378-350	Acrylic	350	13.780	0.5	0.0197	350	13.780	2.0	0.079	350 X 350	13.780x13.780
E10378-370	Acrylic	370	14.567	0.5	0.0197	370	14.567	2.0	0.079	360 X 360	14.173x14.173
E10378-375	Acrylic	375	14.764	0.5	0.0197	375	14.764	2.0	0.079	400 X 400	15.748x15.748
E10378-400-0.5	Acrylic	400	15.748	0.5	0.0197	400	15.748	2.0	0.079	400 X 400	15.748x15.748
E10378-400-0.3	Acrylic	400	15.748	0.3	0.0118	67.5	2.657	2.0	0.079	500 X 500	19.685x19.685
E10378-500	Acrylic	500	19.685	0.5	0.0197	500	19.685	2.0	0.079	500 X 500	19.685x19.685
E10378-600	Acrylic	600	23.622	0.5	0.0197	600	23.622	2.0	0.079	600 X 600	23.622x23.622
E10378-650	Acrylic	650	25.591	0.5	0.0197	460	18.110	2.0	0.079	350 X 300	13.780x11.811
E10378-700	Acrylic	700	27.559	0.5	0.0197	640	25.197	2.0	0.079	500 X 400	19.685x15.748
E10378-800	Acrylic	800	31.496	0.5	0.0197	851	33.504	2.0	0.079	650 X 550	25.591x21.654
E10378-1000	Acrylic	1000	39.370	0.112	0.0044	1261	49.646	2.0	0.079	1050 X 700	4.134x27.559
E10378-1200	Acrylic	1200	47.244	0.3	0.0118	1750	68.898	2.0	0.079	1400 X 1050	55.119x41.339
E10378-100 CC	Acrylic	-100	-3.937	0.5	0.0197	100	3.937	2.0	0.079	100 X 100	3.937x3.937
E10378-300 CC	Acrylic	-300	-11.811	0.25	0.0098	280	11.024	2.0	0.079	280 X 280	11.024x11.024

 

LINEAR FRESNEL LENSES
Part Number	Material	Focal Length		Pitch		Size
		mm	in	mm	in	mm	in
E10379-7-0.3	Acrylic	7	0.276	0.3	0.012	70 X 140	2.756x5.512
E10379-30-0.2	Acrylic	30	1.181	0.2	0.008	20 X 280	0.787x11.024
E10379-30-03	Acrylic	30	1.181	0.3	0.012	30 X 100	1.181x3.937
E10379-40-0.5	Acrylic	40	1.575	0.5	0.020	22 X 90	0.866x3.543
E10379-45-0.2	Acrylic	45	1.772	0.2	0.008	50 X 120	1.969x4.724
E10379-50-30	Acrylic	50	1.969	0.3	0.012	30 X 100	1.181x3.937
E10379-50-50	Acrylic	50	1.969	0.3	0.012	50 X 250	1.969x9.843
E10379-95-0.5	Acrylic	95	3.740	0.5	0.020	30 X 70	1.181x2.756
E10379-100-0.3	Acrylic	100	3.937	0.3	0.012	30 X 100	1.181x3.937
E10379-120-0.3	Acrylic	120	4.724	0.3	0.012	40 X 500	1.575x19.685
E10379-150-0.3	Acrylic	150	5.906	0.3	0.012	100 X 300	3.937x11.811
E10379-(-10)-0.3	Acrylic	-10	-0.394	0.3	0.012	20 X 110	0.787x4.331

 

LENTICULAR LENSES
Part Number	Material	Radius		Pitch		Size
		mm	in	mm	in	mm	in
E10380-02-100	Acrylic	1.5	0.0591	0.2	0.0079	100x100	3.937x3.937
E10380-02-200	Acrylic	0.5	0.0197	0.2	0.0079	200x200	7.874x7.874
E10380-03	Acrylic	0.5	0.0197	0.3	0.0118	200x200	7.874x7.874
E10380-05	Acrylic	0.5	0.0197	0.5	0.0197	200x200	7.874x7.874
E10380-07	Acrylic	0.5	0.0197	0.7	0.0276	200x200	7.874x7.874

 

FRESNEL PRISM
Part Number	Material	Angle	Pitch		Size
		degree	mm	in	mm	in
E10381-09-15	Acrylic	15	0.9	0.0354	80x110	3.150x4.331
E10381-30	Acrylic	23	3	0.1181	80x110	3.150x4.331
E10381-09-25	Acrylic	25	0.9	0.0354	80x110	3.150x4.331
E10381-09-30	Acrylic	30	0.9	0.0354	80x110	3.150x4.331
E10381-09-40	Acrylic	40	0.9	0.0354	80x110	3.150x4.331
E10381-005	Acrylic	90	0.05	0.002	200x200	7.874x7.874
E10381-01	Acrylic	90	0.1	0.0039	200x200	7.874x7.874
E10381-10	Acrylic	90	1	0.0394	200x200	7.874x7.874
E10381-15	Acrylic	90	1.5	0.0591	200x200	7.874x7.874

AWI Industries (USA) Inc. supplies a series of specially designed Solar Energy Collector Fresnel lenses. The difference between a Solar Energy Collector fresnel lens and a standard Fresnel lens is that the Plano side (smooth side) of all Solar Energy Collector Fresnel lenses is facing the sun. Apart from standard Fresnel lenses, AWI Industries (USA) Inc. also supplies Fresnel lenses made to customers' designs with reasonable custom tooling charges.

Below are some standard Fresnel Lenses for Solar Engery Collection Applications

FRESNEL LENSES FOR SOLAR ENERGY COLLECTION APPLICATIONS
Part Number	Fresnel Type	Focal Length (mm)	Grove Pitch (mm)	Aperture (mm)	Material	Thickness(mm)	Size (mm)
E16681-1	Circular Fresnel	50	0.3	100	PMMA	2.0	100X100
E16681-2	Circular Fresnel	400	0.3	780	PMMA	2.0	450X500
E16681-3	Circular Fresnel	1200	0.33	1900	PMMA	2.0	1400X1050
E16681-4	Circular Fresnel	1200	0.33	1900	PMMA	3.0	1400X1050
E16681-5	Linear Fresnel	150	0.3	150X500	PMMA	2.0	150X500
E16681-6	Linear Fresnel	1000	0.3	500X1000	PMMA	3.0	500X500

Focal length tolerence +/- 5%
Thickness tolerence +/- 0.5mm

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