Design of 45° periscopic visual field expansion device for peripheral field loss.
Design of 45° periscopic visual field expansion device for peripheral field loss.
复制标题
DOI：
10.1016/j.optcom.2019.124364
复制
发表时间：
2020-01
影响因子：
2.4
通讯作者：
Hee-Jin Choi;E. Peli;Minyoung Park;Jae-Hyun Jung
中科院分区：
文献类型：
--
作者：
Hee-Jin Choi;E. Peli;Minyoung Park;Jae-Hyun Jung
视野丧失的患者由于与盲侧行人/障碍物相撞而行动不便。为了补偿视场损失，人们广泛使用棱镜将视场从盲侧偏转到视侧。然而，目前的临床菲涅耳棱镜的偏转功率被限制在∼30°，并且只允许眼睛对盲侧进行5°的扫描。这不足以避免大多数冲突，并导致对具有更高功率的设备的需求。在本文中，我们提出了一种新的设计和优化的高功率棱镜类器件(级联结构的镜对填充折射介质)，并验证了增强场扩展高达45°的光线跟踪和真实感模拟。
Patients with visual field loss have difficulty in mobility due to collision with pedestrians/obstacles from the blind side. In order to compensate for the visual field loss, prisms which deflect the field from the blind to the seeing side, have been widely used. However, the deflection power of current clinical Fresnel prisms is limited to∼ 30° and only allows a 5° eye scanning range to the blind side. This is not sufficient to avoid most collisions and results in demands for a device with a higher power. In this paper, we propose a novel design and optimization of a higher power prism-like device (cascaded structure of mirror pairs filled with refractive medium) and verify enhanced field expansion of up to 45° in optical ray tracing and photorealistic simulations.