Complex Holographic Advanced Optical Spatial light modulator (CHAOS)

汽车中的抬头显示器（HUD）正变得越来越普遍，并且已经被证明可以通过保持驾驶员的眼睛在道路上显着降低事故率。传统的汽车HUD投影系统在亮度、对比度、分辨率/清晰度、功率使用、尺寸和颜色变化方面受到限制。最初用于豪华汽车市场的下一代增强现实和高性能HUD的要求非常苛刻，全息HUD在每个领域都提供了各种优势。Two TreesPhotonics已经展示了非常高质量的HUD，使用其高度创新的专利相位全息术，这是在商业开发的过程中。然而，纯相位全息平显需要大量的计算资源，其分辨率是目前FPGA和存储器技术的极限。此外，现有的纯相位空间光调制器所提供的帧速率受到液晶弹性特性的限制。为了提供HUD功能的一步变化，该项目寻求开发全息HUD，该HUD利用完全复杂的光调制（即幅度和相位），使用实时全息计算驱动，以实现更高的性能特性，从而实现汽车HUD的关键创新。这种方法降低了计算复杂性，将使显示器的分辨率和帧速率大大提高，远远超过目前的基线技术。Two Trees Photonics在全息显示和光学系统方面拥有世界领先的技术能力。该项目将通过仿真确定最可行的调制器实现方式并实现空间光调制器。全息算法将被开发，以配合完全复杂的光调制和演示单位将制造。该项目最初专注于汽车，但在航空航天，医疗，铁路，海洋，近眼设备和增强现实方面提供了机会。

Head up displays (HUDs) in cars are becoming increasingly common & have been shown tosignificantly reduce accident rates by keeping the drivers eyes on the roads. Conventionalautomotive HUD projection systems are limited in brightness, contrast, resolution/definition,power usage, size & colour variation. The next generation requirements for AugmentedReality & high performance HUDs initially for the luxury car market are very demanding &holographic HUDs provide a variety of advantages in each of these areas. Two TreesPhotonics have demonstrated very high quality HUDs using its highly innovative & patentedphase only holography, which are in the process of being exploited commercially. However,phase only holographic HUD requires extensive computational resource & resolution is at thelimit of current FPGA & memory technology. Additionally, the frame-rate afforded by theexisting phase only spatial light modulators is limited by the elastic properties of liquidcrystals. To provide a step change in HUD capability the project seeks to develop aholographic HUD that utilises fully complex light modulation (i.e. both amplitude & phase)driven using real-time hologram computation in order to realise the higher performancecharacteristics needed to enable key innovations in automotive HUD. The reducedcomputational complexity of this approach will allow the resolution & frame-rate of thedisplay to be enhanced far beyond the current baseline technology. Two Trees Photonics hassignificant world leading technical capability with holographic display & optical systems. Theproject will determine the most feasible modulator implementation by simulation & realise thespatial light modulator. Holographic algorithms will be developed to match the fully complexlight modulation & a demonstrator unit will be fabricated. The project is initially focused onautomotive but provides opportunities in aerospace, medical, rail, marine, near eye devices &augmented reality.