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http://dx.doi.org/10.3807/JOSK.2016.20.4.481

Optical System Design for a Head-up Display Using Aberration Analysis of an Off-axis Two-mirror System  

Kim, Byung-Hyun (Department of Physics, Dankook University)
Park, Sung-Chan (Department of Physics, Dankook University)
Publication Information
Journal of the Optical Society of Korea / v.20, no.4, 2016 , pp. 481-487 More about this Journal
Abstract
This study presents a new optical system for a combiner-type head-up display (HUD) with a cylindrical lens as an asymmetrical aberration corrector, instead of a freeform mirror. In the initial design process based on off-axial aberration analysis, we obtain an off-axis two-mirror system corrected for linear astigmatism and spherical aberration by adding a conic secondary mirror to an off-axis paraboloidal mirror. Thus, since the starting optical system for an HUD is corrected for dominant aberrations, it enables us to balance the residual asymmetrical aberrations with a simple optical surface such as a cylinder, not a complex freeform surface. From this design process, an optical system for an HUD having good performance is finally obtained. The size of the virtual image is 10 inches at 2 meters away from a combiner, and the area of the eye box is 130×50 mm2.
Keywords
Off-axis mirror system; Head-up display; Linear astigmatism;
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Times Cited By KSCI : 2  (Citation Analysis)
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