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70‐3: Distinguished Student Paper: Novel Directional Projection Screen using Diverted Curved Surfaces Cube Corner Reflector (D‐CCR)
Author(s) -
Ohtera Ryosuke,
Wako Kazuhiro,
Ishitaka Yumiko,
Kano Mitsuru,
Käläntär K,
Uchida Tatsuo
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12224
Subject(s) - corner reflector , retroreflector , cube (algebra) , optics , projector , reflector (photography) , projection (relational algebra) , reflection (computer programming) , viewing angle , surface (topology) , total internal reflection , pillar , physics , computer science , geometry , light source , laser , engineering , mathematics , liquid crystal display , structural engineering , algorithm , programming language
We devised and developed a novel directive projection screen for applications such as personal use, small group meeting, automotive pillar, and near‐eye. This screen reflects and diffuses incident light at an angle Δθ view around a direction deviated by θ view from the direction of the projector. We realized the screen by employing a hollow cube corner retroreflector (CCR). The bottom surface of the CCR was tilted by θ view /2 to change the direction of the reflected light by θ view from the retro‐reflection direction. Furthermore three side surfaces of the CCR (D‐CCR) were curved to diffuse the light within a designed angle (θ view ±Δθ view /2). We simulated a D‐CCR with θ view =10° and Δθ view =16°, i.e., the viewing angle for a single D‐CCR, 10°±8°, and fabricated a prototype. We verified closely the desired characteristics in which an optical gain of 16 was obtained.