Mangin Mirror

In optics, a Mangin mirror is a negative meniscus lens with the reflective surface on the rear side of the glass forming a curved mirror that reflects light without spherical aberration. This reflector was invented in 1876 by a French officer Alphonse Mangin as an improved catadioptric reflector for search lights and is also used in other optical devices.

Read more about Mangin Mirror:  Description, Applications

Famous quotes containing the word mirror:

    Just as a mirror may be used to reflect images, so ancient events may be used to understand the present.
    Chinese proverb.