基于决策的可穿戴低视力辅助设备设计

E. Seibel, S. Frank, K. Kloeckner, T. Furness
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引用次数: 1

摘要

可穿戴低视力助视器(WLVA)的设计包含了广泛的设计变量,并且由于快速变化的相机、微型显示器和计算机技术以及部分视力用户的独特需求而变得更加复杂。使用微型阴极射线管(CRT)显示器的Massof[1]记录了许多WLVA设计挑战。我们的目标。是开发用于低成本wlva的新型扫描光微显示器。最初由Peli[2]提出,我们正在设计wlas,扫描来自激光或发光二极管(LED)的光,直接朝向眼睛。当光束光栅扫描视网膜时,大脑将其视为完整的图像。这种显示技术被称为视网膜光扫描,它从激光或LED光源产生高亮度的图像,并且由于光束狭窄而产生大的聚焦深度。最近的一项阅读表现研究表明,使用视网膜扫描虚拟视网膜显示器(VRD)的少数弱视个体的阅读率明显高于CRT[3]。我们正在研究低成本的光学扫描仪[4],新的人机界面设计[5],以及一种计算机辅助的、基于决策的设计过程,以帮助开发wlva。计算机辅助设计过程的初步结果如下。
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Decision-Based Design of a Wearable Low Vision Aid
The design of a wearable low vision aid (WLVA) encompasses a wide range of design variables and made more complex by rapidly changing camera, micro-display, and computer technologies, and with the unique needs of the partially sighted user. Many of the WLVA design challenges have been documented by Massof [1] using miniature cathode ray tube (CRT) displays. Our goal.is to develop new scanning light micro-displays for low-cost WLVAs. Originally proposed by Peli [2], we are designing WLVAs that scan light from a laser or light emitting diode (LED), directly toward the eye. As the light beam raster scans across the retina, the mind perceives it as a full image. This display technology is called retinal light scanning, which produces images of high brightness from the laser or LED source and great depth-of-focus because of the narrow beam of light. A recent reading performance study demonstrated significantly higher reading rates of a minority of partially sighted individuals using a retinal scanning Virtual Retinal Display (VRD) versus a CRT [3]. We are in the process of researching low-cost optical scanners [4], novel human interface designs [5], and a computer-aided, decision-based design process to aid in the development of WLVAs. The initial results from our computer-aided design process are presented here.
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