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Optical reconstruction of digital hologram using cascaded liquid crystal spatial light modulators

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Title Optical reconstruction of digital hologram using cascaded liquid crystal spatial light modulators
Title of Series 7th International Symposium on Display Holography (ISDH 2006)
Part Number 23
Number of Parts 61
Author Hsieh, Mei-Li
Chen, Mao-Ling
Tu, Han-Yen
Lin, Li-Chien
Cheng, Chau-Jern
License CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI 10.5446/21295
Publisher River Valley TV
Release Date 2012
Language English

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Subject Area Computer Science
Abstract We propose and demonstrate a three-dimensional object reconstruction technique that uses complete amplitude and phase information of a phase-shifting digital hologram by cascading liquid crystal spatial light modulators with a nearly full range complex modulation. The cascaded liquid crystal module is performed by operating both in amplitude-mostly and phase-mostly modulation modes. The amplitude-mostly modulation is applied by minimizing the phase variation, whereas the phase-mostly mode is achieved by minimizing the amplitude variation during the voltage-driven period. The transfer characteristic of the cascaded liquid crystal module is analyzed by the Jones matrix method to yield the suitable polarization states for realizing full-range complex modulation. It is well known that a digital hologram can store both amplitude phase information of an optical electric field and can reconstruct the original three-dimensional object by numerical calculation. This work demonstrates that it is possible to reconstruct optically three-dimensional objects using complete amplitude and phase information of the optical field calculated from the phase-shifted digital holograms. The use of both amplitude and phase information enable us to reconstruct optically three-dimensional objects with fair image quality by selecting the orientation of polarization and the modulation conditions of the cascaded liquid crystal module. Both analytical and experimental results are presented and discussed.
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the incident energy and gentlemen on the title of the Government of the today that decoding reconstruction of digital horrible using cascaded cascaded quickly start spatial light modulator and there were In
this talk we will propose under demonstrated that this can be done on the quick quiz close spatial alignment we see 2 nuclear crystal cannot what is you know digital holographic for the original object construction here my own life the 1st time we have deployed with the international about the digital horrible and then we will show our computer simulation results and also we want to add to the kth nuclear crystals spatial alignment determines its 10 for optical reconstruction in very we were before the convolution we know that the
digital how 1 can be easily and we call articulated by the computer or load on new coded by the the things that and that the you will be easy to make a copy and the story in the computer and also you can easily constructed of the new constructed by using a spatial light modulator in real-time deconstructed C. dimensional objects on
here show that article architecture of all this is a anything going on with the creation and we just talking about the nature of we can use it to be wise after that being and then the other ones the difference being both being come from the same direction and then making difference between the current and we we know the relationship between the object and the other 1 parent then we can calculate the total of the distribution of these horrible and get to the top of so called digital 101 distribution every time we get that the distribution of this the horrible and then we
came from by using needs deconstructed the architecture to to the optical reconstruction and put the hollow 1 here and you new man you mean and help them with their families it constantly appeared then we can get object here so the whole community
and we you use the decoding architecture meaning that the major no objective priors named after articulation waking data that digital horrible on learned that it's a fair share of the Digicom horror once during this figure and as we know that it did a whole lot of usually there complex models so here it is shown that the amplitude is crucial deter Pershing and the phase which is crucial until we got there is a horrible became 1 reconstructed with ditched all along with the 1st move on modulation model spatial light modulator or Willie argues that with metadata modeled and we can construct a good image quality and that if we only knew something only majority to model only can be constructed imagine that is the beginning of the end another 1 is how we do it for you to use only in the amplitude modulation more nuclear crystals spatial modulated and we can only get these deconstructed it's nominated good finally the figure we can see on the 4 the reason that we want to move the optical construction we need the spatial light modulator which can operate you know complex smart complex modulation not to be spread the company's digital horrible 1 otherwise we cannot engage in these beta image quality never
unfortunately on there is and non commercial you quickly spatial languages data and can be can operate you know congress therefore we propose that cascade to the spatial modulators which combined tool to quickly talk and not here and is operated in the basement and then the other 1 is operated the in the tumult and combining 2 operating model and we can get to the company's traditional don't here show our attention for the cascade spatial light modulator that he gave them all optical systems that
there are no further that we should major that each 1 for the modulation property keys often for cheese liquid crystal speech alignment you data and here the formal term it's tend to make use the modulation properties of the quick crystal or can
editor optical suppression mental regiment then we can get the modulation properties of the liquid crystal spatial and modulator these 2 figures show falling based mostly in north and in the underlying file for them but you must pretty models combined these 2 the non-degree optimal competitor that come with maturity most of these figures showing here and by on using these there are modulation properties of our cascaded of spatial I modulator then we
can and simulated that article on immunity computer construction is often that each and this year if we use of quantitative you go it was still and see you we use that Congress moderation model we can get a patent major quality here and that's it for the 2 dimensional optical reconstruction that's a conversation fall commit as many as you know so
we don't have to call the construction and that as we can see that because if we that this division language-related operating in the congress modulation more then we can get beta image products or in this case that's all for the object on 2 dimensional images then we can do the same
dimensional images recording and the reconstruction here we see an article on quantum particle recording system for the street dimensional objects here have on coding system and there really only called horrible find the the the the things that he is the editor on computer can you articulation we can get the digital horrible this is to figures show and this is the 2 daughter 1 companies so that we can show the amplitude of distribution and the face distributions evident
called on recording we also can do that computer simulation for the construction and by this the patient and evaluation show that computer simulations function so so that we can still do our digital once you know come with the duration model and then we can get this term middle product because of the just for constructed image and that was up at full
of cascade spatial language-related modulation properties and not know if like this is not a complex model not like her put the idea 1 so what we did we do with a computer simulation and now we can get construction image here it is unknown noise come out the students here is the get and so we are proposed hour are compensated the taken to come within the hour modulation property itself so the cascade you that spatial alignment modulator effort outcome is that they can get
a beta compressor motivational here and we can also do the computer simulation result under construction and then as we can see this here before we operated in that come with the model that we we want hear it knowing the disappear in we can get a patent image college for by using orchestrated spatial alignment also at all you would do
the optical reconstruction for the street dimensional object to be here show that deconstructed images on this line that is that was come from the center that come with that of compressive modulation 1 and anything without compensation technique so you can see here and this figure shows the data which is more right at me topology also cellular called the history of the and
jason 1801 on by the coding system and we display into our work is Katie demodulated as spatial I'm modulator and he has shown in this video show that become optical reconstruction in real time so you you can see the
communicate the see 115 degrees annotators and can be constructed and these are hollow digital 101 view time by using our located spatial alignment generator module OK now and then is my conclusion and
we have proposed that kids catered spatial alignment and what you to be constructed the that's the dimension of the the major New York Times thank you for your attention you do you all of the energy the main thing is that the only and the idea is that the major thing you with the announcement of the version of all the things that you have heard of thing that has to do with it because you think that all of these in the this is because you have where it like only people does that spatial and wanted to fight some company and the that's the general today that they made by Sony company so there was this was going to have you do you get on these holograms my meaning of young union the this is In the beginning of because see the thing on the set up of these things and the small of 1 of the things we diseases using 2 different pixel sizes of 23 microns 7 microns less young so there's a lot of because of the commercial device we cannot get the sense that all the the things and it's visual images into subgroups so we only have we can take it to the reconstructed image becomes larger was in this case so we we we have done some of integration for the solution you need to do thank you very much additional questions but this thank you very much you can use
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AV-Portal 3.8.0 (dec2fe8b0ce2e718d55d6f23ab68f0b2424a1f3f)