Patent ID: 9026408
Filing Date: 2015-05-05
Classification: G02C,G06F

Abstract:
1. A method implemented by a computer for calculating an optical system, by optimization, the method comprising: i. providing a set of optical system parameters to define a starting system, each optical system parameter being set up at a starting value; ii. defining a plurality of criteria; iii. associating a cost function for each criterion; iv. defining a plurality of global cost functions by associating at least one of the cost functions to each global cost function; v. defining a vector of variable parameters associated with each global cost function by selecting at least one of the set of optical system parameters for each vector of variable parameters; vi. optimizing the plurality of global cost functions using the computer by modifying at least one of the values of the optical system parameters of the vectors of variable parameters to obtain an intermediate optical system, wherein obtaining the intermediate optical system includes alternatively optimizing each global cost function by minimizing one of the global cost functions at a time to obtain a new intermediate optical system after each optimizing step; and vii. repeating step vi. until an equilibrium is reached to obtain the optical system defined by optical system parameters that include surfaces, an index of glasses, and a position of each of the surfaces relative to each other.