Design of a thin see-though optical viewer with a freeform surface

Motoyuki Ohtake; Masato Shibuya; Lianhua Jin

doi:10.1117/12.2571088

20 August 2020 Design of a thin see-though optical viewer with a freeform surface

Motoyuki Ohtake, Masato Shibuya, Lianhua Jin

Author Affiliations +

Proceedings Volume 11500, ODS 2020: Industrial Optical Devices and Systems; 115000G (2020) https://doi.org/10.1117/12.2571088
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

Using a see-through optical viewer with a prism combiner is an affordable solution for head mounted devices. Free-form surfaces are a general way to correct off-axis aberrations generated by combiners. A glass high index wedge prism is used as a combiner to keep the wedge angle small while maintaining total internal reflection and the combiner becomes thinner. Free-form surfaces, on the other hand, are used in relay lenses to correct off-axis aberrations. The diagonal FOV is 44° and the exit pupil diameter is 4.8 mm. After two optical design using XY and Zernike polynomial, we confirm which free-form expression is superior in aberration correction for the viewer.

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Citation Download Citation

Motoyuki Ohtake, Masato Shibuya, and Lianhua Jin "Design of a thin see-though optical viewer with a freeform surface", Proc. SPIE 11500, ODS 2020: Industrial Optical Devices and Systems, 115000G (20 August 2020); https://doi.org/10.1117/12.2571088

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