Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Polarization recycling method for light-pipe-based optical engine

Not Accessible

Your library or personal account may give you access

Abstract

In this paper, a polarization recycling method is proposed for a light-pipe-based liquid crystal on silicon (LCoS) pico-optical engine. The method is based on making use of the virtual light sources array forming at the light pipe’s input surface. With traditional imaging optics, the virtual light sources array can be imaged to a plane after the light pipe, where the separated beams array can be obtained. By applying the polarization conversion system to the separated beams, the incoming unpolarized light can be converted to polarized light. The polarized light is then collected and transferred to the LCoS panel through the relay system. This new polarization recycling method can highly improve the light efficiency. A design example of a 0.29 in. (7.366 mm) color-filter LCoS pico-optical engine with 852×480 resolution is listed. High light efficiency of about 10.5 lm per LED Watt and high irradiance uniformity of about 95% has been achieved. The thickness of the optical engine is 8 mm.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Integral freeform illumination lens design of LED based pico-projector

Shuang Zhao, Kai Wang, Fei Chen, Zong Qin, and Sheng Liu
Appl. Opt. 52(13) 2985-2993 (2013)

Projection optical engine design based on tri-color LEDs and digital light processing technology

Haonan Jiang, Zibin Lin, Yao Li, Yinguo Yan, Ziping Zhou, Enguo Chen, Qun Yan, and Tailiang Guo
Appl. Opt. 60(23) 6971-6977 (2021)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved