Zoom lens system without moving elements realised using liquid crystal lenses

2011 IEEE International Conference on Mechatronics and Automation

Uchida

et al. 2011

Section: Introductionmentioning

confidence: 85%

Liquid crystal lens with electrically controllable focal length

2011 IEEE International Conference on Mechatronics and Automation

Uchida

et al. 2011

“…Lensless zoomable holographic system using scaled Fresnel diffraction also has been proposed . In addition, the liquid optical components such as liquid lens and liquid crystal lens also have been widely used in zoom systems . At present, there are mainly two methods to achieve color holographic display.…”

Section: Introductionmentioning

confidence: 99%

Color holographic magnification system based on spatial light modulators

et al. 2016

Jnl Soc Info Display

-In this paper, we propose a color holographic magnification system based on spatial light modulators. Three spatial light modulators are used to set up the system in our experiment by using space-division method. With the similarity principle of Fourier transform, the size of the reconstructed images can be magnified. By setting the green reconstructed image as standard and readjusting the sizes of the red and blue reconstructed images, the color images can be magnified to four times without chromatic aberration, which is verified by the experiment.

“…By using two anamorphic lenses as a spatial light modulator (SLM), the zoom factor of the system can reach approximately twice as far. In addition, active optical components such as liquid lenses [8][9][10][11][12][13][14][15][16] and liquid crystal lenses [17][18][19] also have been widely used in zoom systems. Usually these component devices are lighter, smaller, and more flexible than those that use conventional optical elements.…”

Section: Introductionmentioning

confidence: 99%

Active optical zoom system

Shen

et al. 2014

Appl. Opt.

In this work, we propose an active optical zoom system. The zoom module of the system is formed by a liquid lens and a spatial light modulator (SLM). By controlling the focal lengths of the liquid lens and the encoded digital lens on the SLM panel, we can change the magnification of an image without mechanical moving parts and keep the output plane stationary. The magnification can change from 1/3 to 3/2 as the focal length of the encoded lens on the SLM changes from infinity to 24 cm. The proposed active zoom system is simple and flexible, and has widespread application in optical communications, imaging systems, and displays.