Cholesteric liquid-crystal-based large-aperture polarized light source for projection systems

1995 ◽  
Author(s):  
Sergey V. Belyaev ◽  
Nicolay V. Malimonenko ◽  
Aleksandr Miroshin
Keyword(s):  
Liquid Crystal ◽  
Light Source ◽  
Cholesteric Liquid Crystal ◽  
Polarized Light ◽  
Large Aperture

Large Aperture Polarized Light Source and Novel Liquid Crystal Display Operating Modes

1990 ◽  
Vol 29 (Part 2, No. 4) ◽  
pp. L634-L637 ◽  
Author(s):  
S. V. Belayev ◽  
M. Schadt ◽  
M. I. Barnik ◽  
J. Fünfschilling ◽  
N. V. Malimoneko ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Source ◽  
Liquid Crystal Display ◽  
Polarized Light ◽  
Operating Modes ◽  
Large Aperture

Microlens Array Homogenizer for Laser Illuminated Projector

2007 ◽  
Vol 364-366 ◽  
pp. 143-147
Author(s):  
Cheng Huan Chen ◽  
Chien Chuan Chen ◽  
Po Hung Yao
Keyword(s):  
Liquid Crystal ◽  
Laser Beam ◽  
Gaussian Beam ◽  
Uniform Distribution ◽  
Light Source ◽  
Laser Light ◽  
Polarized Light ◽  
Microlens Array ◽  
Diffractive Element ◽  
Laser Light Source

Laser light source is a potential illumination light source for non-emissive display applications, especially for liquid crystal projection displays, due to its requirement of low etendue source and highly polarized light. In order to make a conversion from a circular Gaussian beam profile to a rectangular uniform distribution, a microlens array has been proposed as a homogenizer. The analytical and experimental results show that the microlens array with a pitch of 100um under laser beam illumination works as a diffractive element, and a promising uniformity can be obtained with a stack of two microlens array.

scholarly journals High-Reflective Templated Cholesteric Liquid Crystal Filters

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6889
Author(s):  
Yao Gao ◽  
Yuxiang Luo ◽  
Jiangang Lu
Keyword(s):  
Liquid Crystal ◽  
Bragg Reflection ◽  
Cholesteric Liquid Crystal ◽  
Polarized Light ◽  
Single Layer ◽  
Helical Structure ◽  
Optical Filters ◽  
Blue Color ◽  
Phase Liquid ◽  
Multi Phase

Cholesteric liquid crystals (CLCs) have been widely applied in optical filters due to Bragg reflection caused by their helical structure. However, the reflectivity of CLC filters is relatively low, commonly less than 50%, as the filters can only reflect light polarized circularly either left- or right-handedly. Therefore, a high-reflective CLC filter with a single-layer template was proposed which may reflect both right- and left-handed polarized light. The CLC filters of the red, green, blue color were fabricated by the templating technology, which show good wavelength consistency. Additionally, a multi-phase liquid crystal filter with high reflectance was demonstrated by the single-layer templating technology. The templated CLC or multi-phase liquid crystal filters show great potential applications in the optical community, reflective display, and lasing.

Dispersion of proton spin-lattice relaxation in a cholesteric liquid crystal

1983 ◽  
Vol 44 (10) ◽  
pp. 1179-1184 ◽  
Author(s):  
M. Vilfan ◽  
R. Blinc ◽  
J. Dolinšek ◽  
M. Ipavec ◽  
G. Lahajnar ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Lattice Relaxation ◽  
Proton Spin ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

scholarly journals Flow-assisted self-healing of the helical structure in a cholesteric liquid crystal

2021 ◽  
Vol 155 (5) ◽  
pp. 054903
Author(s):  
Jan-Christoph Eichler ◽  
Robert A. Skutnik ◽  
Marco G. Mazza ◽  
Martin Schoen
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Helical Structure ◽  
Self Healing

scholarly journals The temperature dependence of the helical pitch in a cholesteric liquid crystal

2021 ◽  
pp. e1881638
Author(s):  
Robert A. Skutnik ◽  
Jan-Christoph Eichler ◽  
Marco G. Mazza ◽  
Martin Schoen
Keyword(s):  
Liquid Crystal ◽  
Temperature Dependence ◽  
Cholesteric Liquid Crystal ◽  
Helical Pitch

Electrically tunable cholesteric liquid crystal lines defects

2021 ◽  
Vol 114 ◽  
pp. 110960
Author(s):  
Lotfi Saadaoui ◽  
Ridha Hamdi
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal
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