A multiview autostereoscopic LCD display with a localized 2D/3D switching function is developed based on the
actively switchable parallax barrier technology. This switchable barrier comprises of an electro-optically switchable
liquid crystal (LC) and a microretarder. Polymer dispersed liquid crystal (PDLC) with switchable clear and diffusing
states and twisted nematic liquid crystal (TNLC) with polarization switching function are used as switching devices. The
microretarder is prepared by self-developed multibeam laser scanning process, which is clean, friendly to the
environment, and easy for scale up and mass production. The influence factors on the image qualities of 3D displays
based on LCD panel technology are analyzed and discussed. Some solutions have proposed to solve the commercial
application issues.
We develop a new multifunctional optical biochip system that integrates an ellipsometer with a surface plasmon resonance (SPR) feature. This newly developed biochip biosensor, which we call ESPR for an ellipsometric SPR, provides us with a system to retrieve detailed information such as the optical properties of immobilized biomolecular monolayers, surface concentration variations of biomedical reactions, and kinetic affinity between biomolecules required for further biotech analysis. Our ESPR can also serve as both a research and development tool and a manufacturing tool for various biomedical applications.
Although a naked-eye 3D display is more convenient to watch for a viewer, so far and in the near future the image
quality of a stereo display watched with special glasses is still much better than the former. e.g. the viewing angle, the
crosstalk, the resolution, etc. While focusing on the glasses-type stereo display, the image performance of a time
multiplexed shutter-glasses-type 3D display should be better than that of a spatial multiplexed polarization-encoded 3D
display. Shutter-glasses-type 3D display was implemented many years ago by CRT. However, due to the generation
supersedure the CRT was replaced by LCD, the shutter-glasses solution couldn't work for several years as a result of the
long response time of LCD. Thanks to the development of over-drive technology, the response time of LCD is getting
faster, and a 100-120Hz panel refresh rate is possible. Therefore, 3D game fans have a very good opportunity to watch
full resolution, large viewing angle and low crosstalk stereo LCDs again. In this paper, a 120Hz LCD and an LED
dynamic backlight to overcome the hold-type characteristic of an LCD are used to implement a time-multiplexed 3D
display. A synchronization circuit is developed to connect the time scheme of the vertical sync. signal from the display
card, the scanning backlight and the shutter glasses. The crosstalk under different scanning conditions is measured.
A novel autostereoscopic display system, the Integrated-Screen autostereoscopic display system, has been developed to
substantially increase the total number of pixels on the screen, which in turn increase both the resolution and number of
view-zones of the 3D display. In this system, a series of miniature projectors are arrayed and the projection images are
tiled together seamlessly to form an image of ultra high resolution. For displaying 3D images, a lenticular screen with
pre-designed tilted angle is used to distribute the pixels into the plural view-zones. In this paper, an Integrated-Screen
autostereoscopic display system with 30" screen in diagonal and 15 view-zones is presented. The total resolution of the
tiled image is 2930×2700, which is much higher than traditional Full HD display, and the resulted 3D resolution in
each view-zone is 880×600.
For a spatial-multiplexed 3D display, trade-off between resolution and number of view-zones are usually unavoidable
due to the limited number of pixels on the screen. In this paper, we present a new autostereoscopic system, named as
"integrated-screen system," to substantially increase the total number of pixels on the screen, which in turn increase both
the resolution and number of view-zones. In the integrated-screen system, a large number of mini-projectors are arrayed
and the images are tiled together without seams in between. For displaying 3D images, the lenticular screen with predesigned
tilted angle is used for distributing different viewing zones. In order to achieve good performance, we design a
brand-new projector with special lens set to meet the low-distortion requirement because the distortion of the image will
induce serious crosstalk between view-zones. The proposed system has two advantages. One is the extensibility of the
screen size. The size of the display can be chosen based on the applications we deal with, including the size of the
projected pixel and the number of viewing zones. The other advantage is that the integrated-screen system provides
projected pixels in great density to solve the major problem of the poor resolution that a lenticular-type 3D display has.
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