Design of an ultralight and compact projection lens.
Design of an ultralight and compact projection lens.
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DOI：
10.1364/ao.42.000097
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发表时间：
2003
期刊：
影响因子：
1.9
通讯作者：
H. Hua;Y. Ha;J. Rolland
中科院分区：
文献类型：
--
作者：
H. Hua;Y. Ha;J. Rolland
为了满足人们对轻便型头戴式显示器的需求，我们设计了一种用于头戴式投影显示器（HMPD）的超轻且紧凑的投影透镜。HMPD由一对微型投影透镜、分束器和安装在头盔上的微型显示器以及战略性地放置在环境中的回射片材材料组成。HMPD最近被提出作为三维可视化的替代方式。在展示了概念，建立了第一代定制设计的原型，并调查感知问题和应用潜力，我们设计了一个超轻和紧凑的投影透镜与衍射光学元件（DOE），塑料组件，和下一代原型的非球面表面。这里的关键贡献在于投影光学的概念，优化和评估。因此，在简要回顾了HMPD技术及其相关研究的基础上，详细讨论了超轻高性能投影光学系统的概念和优化。将特别详细地描述DOE的设计。最后，将评估DOE的衍射效率，并在光学设计师的物方空间和该技术可能的最终用户的视觉空间中评估光学器件的整体性能。
Driven by the need for lightweight head-mounted displays, we present the design of an ultralight and compact projection lens for a head-mounted projective display (HMPD). An HMPD consists of a pair of miniature projection lenses, beam splitters, and miniature displays mounted on the helmet and retroreflective sheeting materials placed strategically in the environment. The HMPD has been proposed recently as an alternative modality for three-dimensional visualization. After demonstrating the concept, building a first-generation custom-designed prototype, and investigating perception issues and application potentials, we designed an ultralight and compact projective lens with a diffractive optical element (DOE), plastic components, and aspheric surfaces for the next-generation prototype. The key contribution here lies in the conception, optimization, and assessment of the projection optics. Thus a brief review of the HMPD technology and related research is followed by a detail discussion of the conception and optimization of the ultralight and high-performance projection optics. The design of the DOE will be particularly described in detail. Finally, the diffraction efficiency of the DOE will be evaluated, and the overall performance of the optics will be assessed in both object space for the optical designer and visual space for possible end-users of the technology.