CODE V 10.3

Synopsys Inc.'s CODE V10.3 adds support for new native aspheric surfaces and the Q-type asphericsurfaces offer advantages over traditional polynomial-based aspheres for lensdesign optimization and tolerancing. For example, the Q-type surfaces can bemore easily constrained during optimization to improve manufacturability and reducecost. In addition, CODE V's wavefront differential tolerancing feature supportstolerancing on Q-type polynomial coefficients, which is for evaluating systemperformance and manufacturability.

CODE V's enhanced surfaceconversion capabilities make it easy to switch back and forth between theQ-type formulations and traditional aspheric surface representations. Thisallows designers to harness the power of the new formulations while maintainingcompatibility with established fabrication processes.

CODE V's Asphere Expert tool saves userstime by automatically finding optimal asphere locations in the lens system. Thetool uses an algorithm that takes into account both aspheric slope departurelimits and weighted constraints when computing recommended aspheric surfacelocations. Users have the option to convert selected surfaces to aspheres andoptimize the resulting system for best final performance.

New built-in optimizationconstraints in CODE V allow users to directly control the sag or slopevariations of Q-type aspheres to maintain manufacturability of the lens system.For example, these constraints give users the ability to prevent the productionof designs where the sag of the aspheric parts is too large for interferometrictesting, and to ensure that designs do not require removal of an excessiveamount of material during polishing phases. In addition, a new macro functionallows aspheric surfaces to be evaluated and optimized for testability usingZYGO's VeriFire Asphere interferometer metrology system.

CODE V 10.3