commercenews

 One of the most famous images in the history of optics is Sir Isaac Newton's image of a beam of white light passing through a glass prism with a rainbow coming out the other side. In this article, we will try to describe four types of prisms: dispersive prisms (like the one used by Newton), reflective prisms, rotating prisms, and displacement prisms. Reflection Prisms Reflection prisms can be used in imaging systems. Due to total internal reflection, light entering the prism undergoes multiple reflections until they reach the output surface. Reflective surfaces can be added so that the prism acts as a beam splitter. Reflective prisms are used to reduce the physical size of an optical system, to change the direction of light, and to change the orientation of an image. Reflective prisms have lower optical power losses than equivalent systems made of mirrors and are often easier to align because they use a single element rather than multiple elements. Right-angle prisms are typically...