The virtual-real fusion spatial transparent display is a leading and unreported spatial display mode based on transparent nano light field screen. Flat transparent light field screen can image in the depth space to achieve the fusion of "physical space" and "virtual display". The core element of the transparent nano light field screen is based on the large-size functional nano-scale light control unit to realize the precise optical spread modulation of the light field in the transparent waveguide and the color imaging in space, sequentially. The core technologies include large-size nanolithography, large-size high-fidelity nanoimprint, and high display performance metastructure simulation. Compared with the traditional flat display, the virtual-real fusion spatial transparent display has not only the morphological characteristics of the flat display, but also the display size of more than 100 inches brought by the remote virtual imaging. It can be used in exhibition, smart city, education, entertainment, vehicle display, consumer display, etc., and will be a new display method with the diversification, wisdom, and virtual-real interaction.
Augmented reality head-up display (AR HUD) based on large-area diffractive optical waveguide technology is the next generation of AR HUD display technology. Due to the need for high-precision large-area nanostructure manufacturing capabilities, the product development has extremely high technical threshold and difficulty. The core technologies include large-area nanolithography, large-area high-fidelity nanoimprint, and high display performance metastructure simulation. Different from traditional geometric optical head-up display, AR HUD based on large-area diffractive optical waveguide replaces the triple reflection system through optical waveguide, which greatly reduces the depth and volume occupied by light conduction, and can realize exit pupil expansion only by increasing the surface area of optical waveguide. Compared with existing HUD schemes, AR HUD based on optical waveguide has the advantages of highly integrated and ultra-small volume installation. It also has an imaging display with ultra-far visual range (> 15m), which can cover more lanes and achieve deeper integration of driving assistance and display.
ICDT创新区申请 2024年申请表格
样机英文名称
One-way Observable Imaging and Color Changeable Optical Film for Window Display
样机英文简介
When you go along the shopping street, you may find out text or graphics which are drawn on the glass window. These graphic signs have a common little defect. It is the problem of mirrored imaging.
Suppose that you look Arabic numerals on glass windows. Which does it mean '85' or '28'? You end up watching the mirrored images when you view from back side.
It stands to reason that someone observes mirrored imaging according to the direction of viewing if you draw something on the transparent material. Although most people don't care much about it, the authors disliked that one observes the mirrored text and graphics from opposite side.
At I-Zone, we demonstrate one-way observable imaging displays using light wave control optical technology to avoid this problem.
The goal of our research is to display floating images in the air. We intend to demonstrate basic technologies of our aero display which are also shown at poster sessions. The keywords of our research are 'see-through', 'transparent' and 'invisible' as follows;
1) The polarized light control technique enables to make images invisible from back side.
2) The 'transparent' of our motivation gives us ideas of the image switching glass window displays.
3) And we have also developed the dye-doped thin films and transparent color generating films for our proposed one-way (or unidirectional) observable imaging display.
4) The total internal reflection in optics also enables to make the elements invisible from back side in our unidirectional display.
5) Rotate the polarizer on our-developed color generating films and each color shifts to some colors; blue, green and red. All you have to do is that you only choose the direction of polarizer or films.
ICDT创新区申请 2024年申请表格
样机中文名称
宽角度高均匀性Micro-LED显示芯片或灯珠
样机英文名称
Wide angle and high uniformity Micro LED display chip or beads
Through primary optical design, achieve the effect of secondary optical design. Primary optical design is the internal optical design of a chip, and the optical design of the light coming out of the chip is called secondary optical design. Secondary optical design requires the use of mirrors and lenses to increase cost, reduce reliability, and increase volume and weight. One optical design achieves high uniform and wide angle light output efficiency through chip parameter design, saving lenses, costs, reducing volume, weight, improving reliability, and reducing display mixing distance.
ICDT创新区申请 2024年申请表格
样机中文名称
特定出光角度的Mini/Micro-LED车灯芯片或灯珠
样机英文名称
Mini/Micro LED car lamp chips or beads with specific light angles
Through primary optical design, achieve the effect of secondary optical design. Primary optical design is the internal optical design of a chip, and the optical design of the light coming out of the chip is called secondary optical design. Secondary optical design requires the use of mirrors and lenses. An optical design is achieved through chip parameter design. This technology uses a single optical design to create chips or beads that meet the different angles of light output for various types of car lights, reducing the volume occupied by the car lights, reducing the weight of the car lights, lowering the cost of the car lights, reducing the use of lenses, and improving the reliability of the car lights.
ICDT创新区申请 2024年申请表格
样机中文名称
用于增强现实设备的液晶偏振体全息光波导
样机英文名称
Liquid Crystal Polarization Volume Grating for Augmented Reality Device
The liquid crystal polarization volume grating (LCPVG) is proven as a new and practical component for augmented reality (AR) devices. Based on photo-induced alignment technology, two-beam laser holographic interference system is utilized to orient the azimuthal angle spatially distribution of SD1 alignment layer, and the liquid crystal rotated structure along the thickness is realized by doping the chiral dopants. The composite alignment of liquid crystal forms the Bragg grating and reflects the incident beam into the waveguide, propagating with total internal reflection.
The characteristic of the green LCPVG are:
•Field of view: > 32°
•Uniformity: > 75%
•In-coupling efficiency: > 90%
•Out-coupling brightness: > 1000 nits
In summary, other than surface relief grating and volumetric holographic grating, the LCPVG is the new technique to construct the AR devices, with the advantages of easy fabrication process, controllable liquid crystal recipe, low cost and available for large panel size, presenting the potential to massive application for AR devices.
