Green Power Science is dedicated to the backyard scientist. Our belief is that some of the smartest people in the world discover the best things through trial and error IN THEIR OWN BACKYARDS OR GARAGES. We welcome all levels of creativity and hope you find the answers you are looking for.---1
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FRESNEL LENSES LINEAR VS SPOT THIS LINK DESCRIBES THE DIFFERENCE.
ADD ME TO YOUR FAVORITES AND GET NOTIFIED BY EBAY WHEN I LIST A NEW ITEM!!!!!
OTHER SUN COLLECTION ITEMS VERY SOON!!!
ADD ME TO YOUR FAVORITES AND GET NOTIFIED BY EBAY WHEN I LIST A NEW ITEM!!!!!
OTHER SUN COLLECTION ITEMS VERY SOON!!!
16" X 11" INCH SOFT SPOT FRESNEL LENS
Framed Fresnel Lens Concept © 2015 GreenPowerScience
REAL SOLAR GREAT PRICE GOOD OPTICS
Framed Fresnel Lens Concept © 2015 GreenPowerScience
REAL SOLAR GREAT PRICE GOOD OPTICS
This lens is a true spot but not a crystal clear lens but works good
For many applications. Frame is included
We ONLY sell solar products, no random junk.
All lenses are Weather resistant!
This has a longer 20+ inch focal length so this is a real Fresnel Lens.
This is not a page magnifier. BIG DIFFERENCE!!!
UV STABILIZED all GPS lens are UV Stabilized.
This Lens will boil small bottles of water and easily start fires.
16 inches TALL by 11 inches WIDE
SOFT SPOT LENSES ARE DIFFERENT THAN SPOT LENSES AS THEY DIFFUSE LIGHT MORE.
THIS LENS WILL MELT SMALL AMOUNTS OF ZINC AND BOIL WATER.
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SCIENTIFIC DATA AND PHOTOS ©2007 PROPERTY OF GREENPOWERSCIENCE AND MAY NOT BE COPIED OR USED FOR OTHER EBAY LISTINGS. DOING SO MAY RESULT IN COPYRIGHT INFRINGEMENT. IF YOU DO NOT SEE THE GREEN POWER SCIENCE LOGO, IT IS NOT A SOLAR PRODUCT.
ALL THE LENSES WE SELL WERE SPECIALLY SELECTED FOR THEIR SUN COLLECTING ABILITIES.
ALL HAVE BEEN TESTED AND THEY ARE THE BEST OF THE BEST FOR SOLAR NEEDS.
AS WE LEARNED YEARS AGO, NOT ALL FRESNEL LENSES WILL WORK WELL.
WE PURCHASED 159 LENSES AND ONLY 37 WERE USABLE FOR SUN COLLECTION FROM THAT BATCH,
THE REST WERE SCRAPPED. I WAS A PART OF A SOLAR ENGINE PROJECT.
WE ONLY SELL SOLAR TESTED LENSES UNLESS OTHERWISE SPECIFIED.
This makes a huge difference in power, if you simply need to point a lens at a pan for 7 minutes
then heat some food, the cheaper lenses are okay, in fact I have several hundred of those I can sell you.
OUR LENSES ARE REAL SOLAR PRODUCTS:-)
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SOFT SPOT LENSES ARE DIFFERENT THAN SPOT LENSES AS THEY DIFFUSE LIGHT MORE.
THIS LENS WILL MELT SMALL AMOUNTS OF ZINC AND BOIL WATER.
______________________________
SCIENTIFIC DATA AND PHOTOS ©2007 PROPERTY OF GREENPOWERSCIENCE AND MAY NOT BE COPIED OR USED FOR OTHER EBAY LISTINGS. DOING SO MAY RESULT IN COPYRIGHT INFRINGEMENT. IF YOU DO NOT SEE THE GREEN POWER SCIENCE LOGO, IT IS NOT A SOLAR PRODUCT.
- SIZE-----------------16"H X 11"W
- BEAM-----------------soft spot
- BEAM SIZE MAX POWER--1 INCH (1.5" OUTER AREA 700 F)
- FOCAL LENGTH---------20+ INCHES
- WEIGHT --------------2 LBS.
- MAX TEMP. CLIMB------590 F IR THERMOMETER
- MAX COLLECTION-------800F MATERIAL EST...........
- MATERIALS TESTED
- WATER------------6oz. BOILS 105 sec.
TRUE SOLAR DELIVERY 83% OUTER BANDS 85% INNER RINGS
UV rating 3.5 years+ 100% exposure.
- WATER------------6oz. BOILS 105 sec.
ALL THE LENSES WE SELL WERE SPECIALLY SELECTED FOR THEIR SUN COLLECTING ABILITIES.
ALL HAVE BEEN TESTED AND THEY ARE THE BEST OF THE BEST FOR SOLAR NEEDS.
AS WE LEARNED YEARS AGO, NOT ALL FRESNEL LENSES WILL WORK WELL.
WE PURCHASED 159 LENSES AND ONLY 37 WERE USABLE FOR SUN COLLECTION FROM THAT BATCH,
THE REST WERE SCRAPPED. I WAS A PART OF A SOLAR ENGINE PROJECT.
WE ONLY SELL SOLAR TESTED LENSES UNLESS OTHERWISE SPECIFIED.
This makes a huge difference in power, if you simply need to point a lens at a pan for 7 minutes
then heat some food, the cheaper lenses are okay, in fact I have several hundred of those I can sell you.
OUR LENSES ARE REAL SOLAR PRODUCTS:-)
______________________________________________________
VIDEO OF SIMILAR LENS IN ACTION
SECURED IN A WORKING FRAME
16 inches TALL by 11 inches WIDE
Lens DOES HAVE SCRATCHES
but that WILL NOT affect performance if using for sun collection.
This is perfect for water boiling applications.
THIS IS NOT A TOY AND THE WINNING
BIDDER AGREES TO THE WARNING AND TERMS BELOW.
All corners are miter cut for a nice finish.
Lens held securely in place with a wooden inlay. (NICE!)
ALL OF OUR LENSES HAVE THIS INLAY, IT IS VERY TIGHT. NO LENS WOBBLE.
PREVENTS LENS CURL WHEN IN THE SUN.
OUR INLAYS WERE DESIGNED WITH AN EXTRA CHENNEL AT 53LBS. SO IT
IS NOT LOOSE. THIS IS VERY IMPORTANT FOR OPTICAL AND SOLAR APPLICATIONS.
WE ONLY USE SCREWS, AIR NAILS COME LOOSE WITH LENS USAGE!!!!!!!!!!!!!!
ONLY USE SCREWS! THEY CAN ALSO BE SAFELY REMOVED FOR CLEANING OR REMOUNTING.
NAILS CANNOT!!!!!!!!
WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. The lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit WITH A SPOT LENS AND 900 degrees farenheit WITH A LINEAR LENS. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and agrees that separating the lens from the protective cover is done so at their own risk and responsibility. If you are crazy enough to use this for sun collection I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.
AGAIN!!!!!!!!!!!!!
WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA!
NEVER STORE EXPOSED LENS NEXT TO ANY STRUCTURE!!!!!!!!!!
NEVER LEAVE LENS UNCOVERED WHEN NOT IN USE!!!!!
By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold
seller harmless from injury or damages resulting in the use and possible mis-use of this item.
MUST BE 18 years or older to purchase.
THIS IS NOT A TOY, REAL SCIENCE STUFF!!!!!
SECURED IN A WORKING FRAME
16 inches TALL by 11 inches WIDE
Lens DOES HAVE SCRATCHES
but that WILL NOT affect performance if using for sun collection.
This is perfect for water boiling applications.
THIS IS NOT A TOY AND THE WINNING
BIDDER AGREES TO THE WARNING AND TERMS BELOW.
All corners are miter cut for a nice finish.
Lens held securely in place with a wooden inlay. (NICE!)
ALL OF OUR LENSES HAVE THIS INLAY, IT IS VERY TIGHT. NO LENS WOBBLE.
PREVENTS LENS CURL WHEN IN THE SUN.
OUR INLAYS WERE DESIGNED WITH AN EXTRA CHENNEL AT 53LBS. SO IT
IS NOT LOOSE. THIS IS VERY IMPORTANT FOR OPTICAL AND SOLAR APPLICATIONS.
WE ONLY USE SCREWS, AIR NAILS COME LOOSE WITH LENS USAGE!!!!!!!!!!!!!!
ONLY USE SCREWS! THEY CAN ALSO BE SAFELY REMOVED FOR CLEANING OR REMOUNTING.
NAILS CANNOT!!!!!!!!
WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. The lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit WITH A SPOT LENS AND 900 degrees farenheit WITH A LINEAR LENS. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and agrees that separating the lens from the protective cover is done so at their own risk and responsibility. If you are crazy enough to use this for sun collection I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.
AGAIN!!!!!!!!!!!!!
WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA!
NEVER STORE EXPOSED LENS NEXT TO ANY STRUCTURE!!!!!!!!!!
NEVER LEAVE LENS UNCOVERED WHEN NOT IN USE!!!!!
By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold
seller harmless from injury or damages resulting in the use and possible mis-use of this item.
MUST BE 18 years or older to purchase.
THIS IS NOT A TOY, REAL SCIENCE STUFF!!!!!
Happy bidding and goodluck.
YOUTUBE VIDEO
YOUTUBE VIDEO