Premium
Super‐short‐focus front projector with aspheric‐mirror projection optical system
Author(s) -
Ogawa Jun,
Agata Kazuhiro,
Sakamoto Mikio,
Urano Kunihiko,
Matsumoto Takayuki
Publication year - 2005
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2012592
Subject(s) - focus (optics) , projector , citation , front (military) , projection (relational algebra) , computer science , physics , world wide web , optics , artificial intelligence , algorithm , meteorology
— We have developed a new front projector with a super‐short projection distance of 0.65 m at 100 in. We installed a newly developed reflective‐type projection optical system in this projector, which was composed of only four aspheric mirrors that were free of color aberrations. Using this new system and a single‐chip DMD™, we projected a picture that had excellent sharpness and high contrast from 40 to 100 in. This paper describes the principles, design, and characteristics of the new WT600™ front projector.