• Most definations are based on the paraxial optics
  • The paraxial image height for optical design is fast for calculation, but inaccuracy for wide angle or big distortion
  • The real image height needs to calculate the ray iteration and is inaccuracy.
  • We wil use a sample in CAXCAD to show the difference

  • Multi-Start in DLS Optimization
  • Fast Engine in Global Optimization
  • Fast Ray Aiming:three modes can be selected and the CX Ray Aiming don't need the iteration of raytracing
  • Automatic Design: user don't need to remember the MF operate any more
  • Derivative Increments Data help user to know effective vaviables
  • Fast MTF calculation
  • Automaticly MTF Targets tool
  • Eyes Care Mode
  • Fast Graphics Drawing
  • Quickly Command Window

If this is the first time you have got CAXCAD, please follow this article to install the software.

The latest version of the software was named with the date information.

Paraxial ray tracing assumes that the tangent and sine of all angles are equal to the angles themselves (in other words, tan(u)=u ⁡ and sin(u)=u ⁡ ). This approximation is valid for small angles but can lead to the propagation of error as ray angles increase.

The first order data is the basic parameters of the lens design. They are from paraxial optics and enable us to compute some of the most basic properties of an optical system with a minimum of calculation.

The paraxial treatment can provide the designer with insight into the performance of the system with a modest effort.