8 December 1998 Innovative diffractive eyepiece for a helmet-mounted display
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Abstract
A glass-plastic hybrid optical system was designed and built for a direct view helmet-mounted display. This eyepiece incorporates a glass element, two aspheric plastic elements, and an imbedded diffractive surface to achieve high optical performance while reducing cost and weight. The 30 degree FOV design outperforms a previous all-glass design. The resolution requirement is driven by a 24-micron pixel Active Matrix Electroluminescent (AMEL) image source. Several design forms were considered, and the final design was chosen to facilitate manufacturing. Proof of principle units were fabricated using diamond-turned PMMA lenses. Test data are included which compare the diamond-turned and injection molded lenses. Fabrication and alignment tolerances, metrology and manufacturing issues are discussed, and both predicted and measured performance data are presented.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joachim Bunkenburg, Teresa A. Droessler, "Innovative diffractive eyepiece for a helmet-mounted display", Proc. SPIE 3430, Novel Optical Systems and Large-Aperture Imaging, (8 December 1998); doi: 10.1117/12.332476; https://doi.org/10.1117/12.332476
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