We have developed a smallest optics for a Vertical shaped Ultra short throw Projector which can project a Full HD (1920 × 1080 pixels) image. In order to realize the smallest optics, we have designed three specific optical parts. First, we have designed a negative distortion lens to minimize each optical parts. Second, we have put a flat mirror to bend optical paths. Finally, we have designed a freeform mirror to correct the distortion of a projected image. By using these parts, we have realized the smallest optics and excellent image quality for the Vertical shaped Ultra short throw Projector.
Yohei Takano, Hibiki Tatsuno, "The Smallest projection optics for the Vertical shaped Ultra short throw Projector" in Proc. IS&T Int’l. Symp. on Electronic Imaging: Color Imaging XXII: Displaying, Processing, Hardcopy, and Applications, 2017, pp 80 - 83, https://doi.org/10.2352/ISSN.2470-1173.2017.18.COLOR-039