Premium
P‐187: An Electrically Tunable Focusing LCOS Pico Projector Using a Liquid‐Crystal Lens
Author(s) -
Lin HungChun,
Chen MingSyuan,
Lin YiHsin
Publication year - 2011
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 - 10.1889/1.3621248
Subject(s) - liquid crystal on silicon , projector , materials science , lens (geology) , liquid crystal , optics , optoelectronics , liquid crystal display , voltage , electrical engineering , physics , engineering
An electrically tunable LCOS pico projector using a liquid crystal (LC) lens as an active optical element is demonstrated. The LC lens consists of two built‐in sub‐lenses: one is an electrically tunable focusing lens controlled by a LC layer and the other is a fixed focused polymeric lens. The tunable ranges of the electrically tunable LCOS pico projectors are 200 cm to ∼7 cm. The driving voltage of the electrically tunable focusing LCOS pico projector is less than 35 V rms . The response times is 1.1 sec. The image performance of the electrically tunable focusing LCOS pico projector is also demonstrated.