Freeform optics is the next generation optics with no rotation symmetry about any axis. The fabrication and metrology offreeform optics are not possible by conventional techniques. Due to non-symmetric nature, it is more critical to align thefreeform surface during fabrication and metrology. Fabrication and metrology accuracies of the freeform optics aremainly limited due to alignment errors at all the stages of development process. In this paper, effects of alignment errorson quality of freeform optics during of fabrication and metrology are studied. It is found that alignment errors havesignificant contribution on quality of freeform optics development. Different types of fiducials and their importance andutilization are discussed. Further, a strategy for effective alignment of freeform optics is proposed.
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