硅基液晶立体投影光学引擎的设计理论及优化机理研究

Three-dimensional display is getting hot in the information display area. In this day and age, both opportunities and challenges exist in the domestic industry of three-dimensional display. Till now polarized stereoscopic projection technology has been proved to be the most reliable technology in three-dimensional display through the world. However, the integrated system of two independent optical engines has restricted the improvement in stability, economy, as well as portability of the corresponding products. The LCoS-based stereoscopic optical engine has incorporated independent two-channel optical path into a single system, which can partly help solve the problems mentioned above. However, the scarcity of thorough research on both design theories and optimization mechanism of the LCoS-based stereoscopic projection has led to the failure of simultaneous improvement in performance and portability of the whole system, which has restricted its widespread application. Based on performance optimization and miniaturization design, this project will take LCoS-based stereoscopic optical engine as the research object, and set the goal as 1) establishing the universal design theory on freeform surface illumination, 2) studying optimization mechanism of 2D/3D compatible display, 3) as well as exploring the design principle of stereoscopic projection optical engine integration. In this way, the compatibility of performance enhancement and system integration may be finally improved. This project will not only provide the theoretical support and technical guidance for high-performance and compact stereoscopic projection technology, but also help realize the independent intellectual property rights for our country. Therefore, the good prospect for domestic display industry can be expected in the near future.

三维显示是信息显示领域的热门研究方向，我国三维产业的发展正处于机遇与挑战并存的关键时期。偏振式立体投影技术是目前最可靠的主流三维显示技术，然而两套独立的光学引擎的架构制约了系统稳定性、经济性和便携性的提升。硅基液晶立体光学引擎在唯一的系统中集成了独立的双通道光路，一定程度上解决了上述问题，但是目前文献中尚缺乏设计理论和优化机理方面的系统研究，因此难以同时兼顾系统的性能提升与体积缩减，这成为制约立体投影技术普及的瓶颈。本项目综合考虑性能优化和微型化设计，以硅基液晶立体投影光学引擎作为研究对象，建立立体投影光学引擎中自由曲面照明的普适性设计理论，研究2D/3D共容投影显示的优化机理，探索整机一体化设计原理，解决硅基液晶立体投影光学引擎性能和体积相互制约的瓶颈问题。本项目的研究将为高性能和微型化的立体投影技术奠定理论和技术基础，推进自主知识产权的形成与掌握，使我国在新一轮显示产业竞争中取得先机。

立体显示是信息显示领域的发展方向之一，偏振式立体投影技术是目前主流的立体显示技术，然而两套独立的光学引擎制约了系统的便携性和经济性。基于此，本项目旨在研究集成独立双通道光路的硅基液晶立体投影光学引擎，从理论研究、机理探索、样机试制验证等三个方面出发，对立体投影显示系统的关键科学和技术问题展开了探索与研究。在理论研究方面，项目通过建立光源与目标照明的匹配映射，提出了硅基液晶立体投影光学引擎同步多自由曲面的设计理论，并研究了在照明系统中具有普适性应用意义的微阵列折/反射自由曲面系统；在机理探索方面，项目构建了硅基液晶立体投影光学引擎的仿真模型，讨论了不同棱镜分光系统对光学引擎性能的影响，建立了立体显示系统的串扰模型，提出了降低串扰和摩尔条纹的理论设计方法；在样机试制验证方面，项目提出了一种多视角动态图像立体投影系统，研发了立体投影光学引擎样机，并在自主研发的测试平台上进行了全功能测试，并在福建省产品质量检验研究院进行了检测。项目按照任务书完成了预期目标，获得了预期研究成果，取得了样机测试报告。在基金资助下共发表学术论文19篇，其中以申请人为第一作者/通讯作者发表12篇；已和清华大学出版社签订协议出版编著1本；申请国家发明专利18件，其中授权11件；申请实用新型专利并授权2件；申请外观专利并授权1件。