Category: Manufacturing

New imagers can capture light intensity variations up to six or more orders of magnitude within the same image frame (+120db HDR, 20*LOG(1e6)), and together with the growing number of applications using computer vision, they are putting very demanding requirements on lens performance. Designing and manufacturing an HDR lens is probably as much art as it is science and engineering. Sunex HDR Optimized™ lenses are the first stepping stone to build a system, that performs…

A typical lens assembly consists of several lens elements inside a cylindrical barrel.  Due to the mechanical clearance requirement, the internal element diameters must be smaller than the barrel internal diameter. This creates potential risks that could result in boresight errors or changes: Lens to lens variance of the optical axis due to manufacturing tolerance A possible lateral shift of individual elements overtime due to strenuous conditions The first potential risk (lens to lens variance)…

One of the most important specifications for an imaging lens is the image circle. So what is the image circle of a lens ? This question is often asked without a clearly definition of the image circle. This article will attempt to clarify the concept of image circle and discuss what’s to be expected from real-world lenses in terms of image circle. When a lens is first designed the designer must choose a maximum field…