双目大出瞳直径光学系统观察舒适性设计

Design for visual comfort of binocular optical system with large exit pupil

通过介绍人眼双目视觉的原理,重点对双目大出瞳直径光学系统中会聚角和聚焦差的影响进行了分析,剖析了其影响舒适性观察的因素和设计误区,指出设计双目大出瞳直径光学系统时应考虑不同瞳距以及非零视度观察仪器的情况,避免会聚角太大或为负值。会聚角应控制在(0~4)m-1(光焦度)范围内;而聚焦差越小越好,不应大于2m-1。

Based on the binocular vision theory ,the effects of the convergence angle and the fo‐cusing difference of the binocular optical system with large exit pupil were analyzed .Further‐more ,the factors and the misunderstanding of design w hich could influence the visual comfort w ere also analyzed .It is pointed out that different pupil distances and the condition of nonzero visibility observation instrument should be considered .The result shows that the convergence angle should be controlled betw een 0~4 m -1 ,and the binocular focusing difference should be 0~2 m -1 w hich is the smaller ,the better .