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Old 04-19-2014, 08:29 PM   #1
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Use of Fresnel Lenses

I was watching RV driving videos made by LAZYDAYS DRIVER CONFIDENCE COURSE. One of the courses talks about the passenger side blind spot using both flat and convex mirrors. The course talks of using something called a Fresnel lens to eliminate this blind spot. Purchasing my coach last August, I still lack a lot of confidence while driving. Do any of you use these Fresnel lenses? Do they work? If so, where did you purchase them? My wife and I depart on a cross country trip next month and I'm preparing for this trip. Thanks for your assistance.

Jim & Judy & Bella (Black Lab) & Sunny (Retriever)
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Old 04-19-2014, 08:34 PM   #2
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Old 04-19-2014, 09:02 PM   #3
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I looked on Camping World's website and didn't see anything but flat and convex mirrors. Could you post a CW IP for the mirrors you purchased? Do they work effectively for you? Thanks.
Jim & Judy & Bella (Black Lab) & Sunny (Retriever)
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Old 04-19-2014, 10:52 PM   #4
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A Fresnel lens is what they use in lighthouses to focus the light beam. Also used in the opposite sense to disperse light in a light fixture. I'm not understanding how it would help with a mirror. Any image seen through it would be distorted. Might want to Google that one.
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Old 04-19-2014, 11:31 PM   #5
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This is where I got mine. Amazon.com: Car Wide Angle Fresnel Lens Parking Reversing (Transparent): Automotive If you search they have other sizes. Haven't used it yet. Bought it primarily to put it in the passenger's side window to keep an eye on the fence when backing in or pulling out of the driveway. The driveway 70' long, house on one side fence on the other, just a few inches to spare between the fence and the house eaves. Can't see how close I am to the fence below the passenger's window, hope it will help. This is the one I actually bought http://www.amazon.com/gp/product/B00...productDetails

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Old 04-20-2014, 12:31 AM   #6
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I started driving tractor trailers 37 years ago. It didn't take me long to realize a fresnel lens completely eliminates the blind spot on the right front side. I now have one on my Class A shotgun seat window. It can be easily re-located, no moving parts, inexpensive, and works great. If you have your mirrors adjusted properly and a fresnel lens placed in the right spot, no car can hide from you over on that far side. A great deal for 8 bucks.

Amazon.com: CIPA 60100 Wide Angle Lens - 8" x 10": Automotive
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Old 04-20-2014, 12:37 AM   #7
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The following video is where I found out about the fresnel lens. It looks like it attaches to the passengers side window to make that blind spot on the right more visible. Look at the spot on the video at approximately the 10:25 point.

RV Driver Confidence Course 1: Adjusting Your RV Mirrors - betterRVing! Experience better RVing.

Thanks for the links. Think I'm going to purchase one as my better half has a bad habit of not wanting to stay in the passengers seat while I am driving. It makes me nervous to go from right to left lane, knowing that spot to the right is blind to me. Think I'll give it a try. Thanks again.
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Old 04-20-2014, 05:23 AM   #8
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There are 3 different sizes of the Fresnel lens. I use one in rear window of our MH. Works great.
PPL sells all three sizes.
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Old 04-20-2014, 05:24 AM   #9
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No matter how I adjusted my mirrors I could lose a low vehicle as it passed the passenger side right at the front of the MoHo. Alright if DW was with me but alone it was an issue.
Bought the big one from Camping World with good results, did exactly what I wanted it to do. It was inexpensive.
Ending up cutting it in two and used just the lower portion.
I read a review before suggesting removing it when not in use.
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Old 04-20-2014, 07:44 AM   #10
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Got mine when I took the Lazy Days Course. Not expensive and easy to move. Great little safety devise especially when a small car is next to you.
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Old 04-20-2014, 10:27 AM   #11
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We picked one up at Lazy Days when we took that course. It lives on the door window and had saved a couple of small cars from getting turned into yard art not to mention a new paint job on the coach.

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