Design of a free-form lens system for short distance projection

Bo Yang; Kan Lu; Wei Zhang; Fujian Dai

doi:10.1117/12.897111

7 September 2011 Design of a free-form lens system for short distance projection

Bo Yang, Kan Lu, Wei Zhang, Fujian Dai

Proceedings Volume 8128, Current Developments in Lens Design and Optical Engineering XII; and Advances in Thin Film Coatings VII; 81280E (2011) https://doi.org/10.1117/12.897111
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

A free-form lens system design is proposed for short distance projection. Free-form surface shape and non-rotational symmetrical structure provide us more freedoms for optimization. The catadioptric structure is also used to reduce the overall length of the whole system. The designed projector lens system consists of two parts. The first part is a rotationally symmetrical lens system which corrects the basic aberrations. The second part contains a free-form lens and a reflector which correct the distortion and other aberrations. We achieve 55inch projected image size at a display screen which is 300mm away from the lens system. The maximum distortion for all fields at all distances is less than 3%.

Citation Download Citation

Bo Yang, Kan Lu, Wei Zhang, and Fujian Dai "Design of a free-form lens system for short distance projection", Proc. SPIE 8128, Current Developments in Lens Design and Optical Engineering XII; and Advances in Thin Film Coatings VII, 81280E (7 September 2011); https://doi.org/10.1117/12.897111

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