The prisms are usually coated to increase reflectivity and to keep the light waves in the right direction. The design of the prisms means they work together to correct blurred images and let you see your target clearly. There are two prisms and these meet at a 90° angle, with the shape looking similar to the roof of a house. The prims are in the shape of a right angled triangle, and they reflect the light rays through the binoculars so you see your image clearly. Porro prisms are the more traditional ones and these are seen in older, binoculars with a zig zag shape. There is no right or wrong when it comes to the type of prism you have in your birdwatching binoculars, but let’s take a little look at each of them and how they work. If you didn’t have prisms, your binoculars would be a lot longer and so a lot harder to use. The shape of the prism reflects light waves, and this shortens the optical path. Without a prism, you would see your images upside down. Prisms work with the lenses to make sure you see the image clearly and the right way up.
0 Comments
Leave a Reply. |