Premium
Design of compact projection lenses using double‐layered diffractive optical elements
Author(s) -
Jia Hongzhi,
Wang Donglin
Publication year - 2011
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/jsid19.3.265
Subject(s) - liquid crystal on silicon , optical transfer function , optics , wavefront , distortion (music) , lens (geology) , projection (relational algebra) , physics , resolution (logic) , materials science , diffraction , liquid crystal display , computer science , optoelectronics , artificial intelligence , amplifier , cmos , algorithm
— Based on several special properties of diffractive optical elements (DOEs) such as savings in mass and to freely modulate the wavefront of incident light, a new compact projection lens with double‐layered DOEs is presented. It is comprised of five lenses and has nearly half the weight of its original structure. The modulation transfer function (MTF) value on‐axis is 0.7 at a spatial frequency of 33 lp/mm and more than 0.3 for all off‐axis values, which satisfies the requirement of a color‐filter‐type liquid‐crystal‐on‐silicon (LCoS) 0.59‐in. display with a SVGA resolution. The maximum distortion is 0.46%.