Descry in a superior way gone a vertical back window, or a side window, with a Apartment lodgings plastic negative Fresnel lens.
Flat, plastic Fresnel lenses, called magnifying sheets, have numerous uses, from starting fires to preventing automobile accidents. A positive lens concentrates a larger area of light onto a small focal point -- but the type used here is a negative lens. It bends light slightly via concentric prisms -- tiny grooves cut into the plastic. This brings the area outside the Fresnel lens's natural viewscape up into view through the lens, similar to the way side mirrors enable drivers to see a larger area than just the size of the mirror. This reduces the area that would normally be a blind spot and can reduce accidents. Then spray the window with a light mist of clean water.3. Look through the plastic Fresnel lens from both sides. Make sure you have the lens facing in such a way that it will magnify what you see through it, giving you a broader view.
Clean the inside of the car's back window thoroughly with auto glass cleaner and paper towels.
2. Water holds a Fresnel lens to a window.
Rinse the glass cleaner from the window's surface to remove any residue. Spray the window with water and use the paper towels to remove the rinse water. Plain water will adhere a thin plastic negative Fresnel lens to a window.
Instructions
1. Prepare a window for mounting a negative Fresnel lens by washing it with a glass cleaner.If you look through it through the opposite side, things will appear smaller. You want to look through it in the direction that makes things appear larger.
4. Place the plastic Fresnel lens onto the inside surface of the car's back window. Start at the center of the lens and press it to the window's surface. Press any bubbles out toward the edges of the lens. Use the squeegee or an old credit card if needed.
5. Remove the lens by simply peeling it off the window. Repeat these steps to replace it.
