Non-mechanical programmable image rotator with Glan-Thompson prism

Jingyi Xiong; Friso Schlottau; Youzhi Li; Kelvin Wagner

doi:10.1117/12.557988

Non-mechanical programmable image rotator with Glan-Thompson prism

Jingyi Xiong, Friso Schlottau, Youzhi Li, Kelvin Wagner

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

We present a non-mechanical, dynamically programmable, all-optical image rotator, which can rotate an input image to any angle or a grid given by 360°/2ⁿ, where n is the number of stages. The image rotator uses cascaded stages in which each stage rotates the image by an angle given by half the previous stage. Each stage uses an Ferroelectric Liquid Crystal (FLC) polarization switch to select between a straight through path and a deflected path with an odd number of bounces, that when rotated to an angle, operates as an image rotating prism. An FLC is used for each stage to choose the polarization and therefore whether to rotate the image or not. By switching the FLC director orientation by 45° for each stage, images can be rotated to an arbitrary angle at a speed of several KHz.

Original language	English
Article number	11
Pages (from-to)	124-131
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5557
DOIs	https://doi.org/10.1117/12.557988
State	Published - 1 Dec 2004
Externally published	Yes
Event	Optical Information Systems II - Denver, CO, United States Duration: 4 Aug 2004 → 5 Aug 2004

Keywords

Image processing
Nonmechanical image rotator

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.557988

Cite this

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title = "Non-mechanical programmable image rotator with Glan-Thompson prism",

abstract = "We present a non-mechanical, dynamically programmable, all-optical image rotator, which can rotate an input image to any angle or a grid given by 360°/2n, where n is the number of stages. The image rotator uses cascaded stages in which each stage rotates the image by an angle given by half the previous stage. Each stage uses an Ferroelectric Liquid Crystal (FLC) polarization switch to select between a straight through path and a deflected path with an odd number of bounces, that when rotated to an angle, operates as an image rotating prism. An FLC is used for each stage to choose the polarization and therefore whether to rotate the image or not. By switching the FLC director orientation by 45° for each stage, images can be rotated to an arbitrary angle at a speed of several KHz.",

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AU - Xiong, Jingyi

AU - Schlottau, Friso

AU - Li, Youzhi

AU - Wagner, Kelvin

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Y1 - 2004/12/1

N2 - We present a non-mechanical, dynamically programmable, all-optical image rotator, which can rotate an input image to any angle or a grid given by 360°/2n, where n is the number of stages. The image rotator uses cascaded stages in which each stage rotates the image by an angle given by half the previous stage. Each stage uses an Ferroelectric Liquid Crystal (FLC) polarization switch to select between a straight through path and a deflected path with an odd number of bounces, that when rotated to an angle, operates as an image rotating prism. An FLC is used for each stage to choose the polarization and therefore whether to rotate the image or not. By switching the FLC director orientation by 45° for each stage, images can be rotated to an arbitrary angle at a speed of several KHz.

AB - We present a non-mechanical, dynamically programmable, all-optical image rotator, which can rotate an input image to any angle or a grid given by 360°/2n, where n is the number of stages. The image rotator uses cascaded stages in which each stage rotates the image by an angle given by half the previous stage. Each stage uses an Ferroelectric Liquid Crystal (FLC) polarization switch to select between a straight through path and a deflected path with an odd number of bounces, that when rotated to an angle, operates as an image rotating prism. An FLC is used for each stage to choose the polarization and therefore whether to rotate the image or not. By switching the FLC director orientation by 45° for each stage, images can be rotated to an arbitrary angle at a speed of several KHz.

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Non-mechanical programmable image rotator with Glan-Thompson prism

Abstract

Keywords

ASJC Scopus subject areas

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