24 August 2005 Thirty different views of a lens design solution space: a good example for teaching students how to design and not to design a lens
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Abstract
The design of high numerical aperture objective to be used as an optical data storage device was given out as a midterm exam in a lens design class consisting of twenty-nine students. The design space was restricted by the following constraints: the number of elements could not exceed three, only three material types were available, and the maximum overall length and the minimum working distance requirements were given. The students were allowed to pick their own starting point and were graded on both the maximum resolution they could achieve and the manufacturability of the design. The results were compiled into a design study. Although a few of the designs violated the specifications, the remainder could be grouped into three distinct design forms. The three different design forms were then analyzed for their ability to "stretch" the specifications (ex. working distance or resolution) while discussing the difference in tolerances between the design forms. The designs were also used to highlight the importance of controlling edge thicknesses and center thicknesses during the design process.
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Julie L. Bentley "Thirty different views of a lens design solution space: a good example for teaching students how to design and not to design a lens", Proc. SPIE 5875, Novel Optical Systems Design and Optimization VIII, 58750C (24 August 2005); doi: 10.1117/12.623157; https://doi.org/10.1117/12.623157
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