Target optical lens quality

The ridge prism can rotate and reverse the image and deflect light with a 90 ° bend. It is suitable for telescopes and any optical instrument that needs to flip the image from the objective lens, open the right side and bend at 90 ° to maintain the correct visual direction.

Amisi roof prism is named after the inventor Italian astronomer Giovanni amisi. It is a reflective optical prism that can invert and deflect the image by 90 °. He is often used in the eyepiece of a telescope as a system for image erection.

The shape of this element is like a standard right angle prism attached to the roof on the longest side (including two planes orthogonal at 90 °), and the total reflection of the roof part turns the image laterally. The rotation direction of the image is not changed.

The roof surface of the prism is sometimes coated with optical coating to become the surface of the mirror, which makes the prism not limited to the critical angle of total reflection and can accept incident light at a large angle.

Do not confuse the non dispersive Amish roof prism with the dispersive Amish prism.