Complex Holographic Advanced Optical Spatial light modulator (CHAOS)

汽车上的平视显示器(HUD)正变得越来越普遍，研究表明，通过让司机盯着道路，平视显示器可以显著降低事故率。传统的车载平显投影系统在亮度、对比度、分辨率/清晰度、功耗、大小和颜色变化方面都受到限制。最初面向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在这些领域中的每一个领域都提供了各种优势。Two TreesPhotonics已经使用其高度创新和专利的纯相位全息技术展示了非常高质量的HUD，该全息技术正在进行商业开发。然而，纯位相型全息平显需要大量的计算资源，分辨率已经达到了目前的现场可编程门阵列和存储技术的极限。此外，现有的纯相位空间光调制器提供的帧速率受到液体晶体弹性性质的限制。为了实现平显能力的阶梯式变化，该项目寻求开发全息平显，它利用实时全息计算驱动的完全复杂的光调制(即幅度和相位)，以实现实现汽车平显关键创新所需的更高性能和特性。这种方法降低了计算复杂度，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。本项目将通过仿真确定最可行的调制器实现方案，实现空间光调制器。将开发全息算法来匹配完全复杂的光调制&将制造一个演示单元。该项目最初专注于汽车，但在航空航天、医疗、铁路、海洋、近视设备和增强现实领域提供了机会。

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.