Optical invariants are mathematical expressions representing several optical parameters. The values for each optical invariant are constant despite the fact that optical parameters change from one part or element of the optical system to another. Optical invariants...
There are two primary methods of image formation in lens design. Perspective projection (F-Tan Theta lenses also called Rectilinear or Orthoscopic). Equidistant projection (F-Theta lenses also called Equiangular) The Perspective projection method is most often used...
In the coming weeks, we will be posting about the unique design considerations and material requirements for infrared optical systems. In this post, we will focus on the definitions optical engineers use. Infrared radiation includes electromagnetic waves with...
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