Planar 1 x 2 optical prism deflector switch fabricated on a silica waveguide

2005 ◽  
Author(s):  
Mariko Ishida ◽  
Atsushi Tate ◽  
Kenichi Masuda ◽  
Takanori Suzuki ◽  
Hiroyuki Tsuda
Keyword(s):  
Optical Prism

Dynamics of a liquid-crystal variable optical prism based on Pancharatnam phase

2010 ◽  
Vol 49 (6) ◽  
pp. 976 ◽  
Author(s):  
Lei Shi ◽  
Paul F. McManamon ◽  
Douglas Bryant ◽  
Ke Zhang ◽  
Philip J. Bos
Keyword(s):  
Liquid Crystal ◽  
Pancharatnam Phase ◽  
Optical Prism

scholarly journals Измерение показателя экстинкции диэлектрических пленок на основе спектроскопии нарушенного полного внутреннего отражения

2018 ◽  
Vol 44 (16) ◽  
pp. 89
Author(s):  
V.B. Nguyen ◽  
Л.А. Губанова
Keyword(s):  
Light Attenuation ◽  
Optical Coatings ◽  
Optical Prism ◽  
Film Forming ◽  
Special Attachment

AbstractVarious methods of measuring the coefficient of light attenuation in optical coatings are considered. It is shown that the dimensionless extinction index of a coating made of a weakly absorbing film-forming material can be measured using a special attachment based on a parallelepiped-shaped optical prism. Parameters of the proposed attachment are calculated so that it could be arranged inside standard spectrophotometers.

Multi-Layer Counter-Pressure Injection Molding for Thick-Walled Optical Lens

2021 ◽  
Vol 36 (2) ◽  
pp. 131-136
Author(s):  
Y. Liu ◽  
L. Cao ◽  
W.-K. Chi ◽  
L.-Y. Zhang ◽  
W.-M. Yang ◽  
...  
Keyword(s):  
Injection Molding ◽  
Injection Molding Process ◽  
Optical Performance ◽  
Molding Process ◽  
Optical Lens ◽  
Optical Prism ◽  
Counter Pressure ◽  
Pressure Injection ◽  
Critical Issues ◽  
Optical Applications

Abstract In precision optical applications, plastics thick-walled optical lenses are increasing. Dimensional stability and optical performance are the critical issues that should be addressed for plastic thick-walled lenses. A novel multi-layer counter-pressure injection molding process is proposed in this study. The experimental prism mold with moveable pistons was developed to investigate the effects of layering methods, counter-pressure and their combination on thick-walled optical lenses. The experimental results reveal that counter-pressure injection molding is effective in improving shrinkage, transmittance and refractive index of the thick-walled optical prism. Counter-pressure of the piston provided lower melt velocity and shorter flow path of melt to improve polymer molecules orientation, and also offered continuous holding pressure during the filling stage to eliminate defects such as shrinkage or short shots. The combination of counter-pressure and multi-layer injection molding technology further improved the dimension stability and optical performance of the thick-walled optical lens. Much thinner layers than the final wall thickness of prism ensures shrinkage reduction during the cooling stages. A thick-walled optical prism was fabricated successfully upon applying a multi-layer counter-pressure injection molding process.

Features of a process for fabricating high-accuracy optical prism components and spectral-separator modules

2004 ◽  
Vol 71 (12) ◽  
pp. 812
Author(s):  
S. A. Arkhipov ◽  
V. V. Potelov ◽  
B. N. Senik
Keyword(s):  
High Accuracy ◽  
Optical Prism
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