[LCT3-4L] Development of an Ultra-Thin, Lightweight Pancake Optics with a High-Curvature Single-Resin-Lens | Proceedings of the International Display Workshops Volume 32 (IDW '25)

Proceedings of the International Display Workshops Volume 32 (IDW '25)

Dec 2 - Dec 5, 2025International Convention Center Hiroshima

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Proceedings of the International Display Workshops Volume 32 (IDW '25)

Dec 2 - Dec 5, 2025International Convention Center Hiroshima

[LCT3-4L]Development of an Ultra-Thin, Lightweight Pancake Optics with a High-Curvature Single-Resin-Lens

*Tokito Yamaguchi¹, Takeya Sakai²(1. Seiko Epson Corporation (Japan), 2. Hayashi Telempu Corporation (Japan))

https://doi.org/10.36463/idw.2025.0056

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Keywords:

Compact HMD,Virtual Reality,Polarized pancake optics,Liquid crystal,Curved lamination

We developed an ultra-thin and lightweight pancake optics with a single resin lens. To realize this, a new liquid crystal QWP technique and a RP high-curvature vacuum lamination technique for a reflective polarizer were developed. A prototype lens, 12 mm thick and weighing 10g, demonstrated high image quality.

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