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My home has a window that is too high for me to see anything except trees and sky. I sit in a wheelchair and cannot get close enough to the window to see my driveway below the window. This first picture is the view I normally have through that window. |
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Here is a close-up view of the same window. As you can see, I can see nothing except trees and sky. But, I want to see if someone is in my driveway. Frustrating! |
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An inexpensive solution is to buy a $10.00 wide-angle, flexible plastic, Fresnel lens which can be semi-permanently stuck to the window using water. This particular one is advertised as a better way to see what is behind a van. You stick this lens on your van's back window and it gives you a much wider rear view from the driver's seat. The lens gives a different view depending on whether you see through the front or the back side of the lens. Viewed frontwards, as in this picture, you get a view that is wide-angled and straight lines (like trees or telephone wires) appear to be straight. |
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If the lens is viewed from the back side, (as seen in this picture) you get an even wider-angled view, but straight lines appear to be curved close to the edge of the lens. For my driveway window, I use the lens backwards because it gives the widest view possible. It also shows objects that are lower than I can normally see. Many companies make Fresnel lenses. This particular one came from 3Dlens.com. |
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