of or relating to sight, especially in relation to the physical action of light (尤指与光的物理运动相关)(与)视觉(有关)的 optical illusions. 视错觉,光幻觉。 ■constructed to assist sight 有助于视力的 an optical aid. 助视器,眼镜。 ■devised on the principles of optics 光学的
(Physics)operating in or employing the visible part of the electromagnetic spectrum (物理)(使用或工作于)可见光谱区的 optical telescopes. 光学望远镜。 ■(Electronics)(of a device) requiring electromagnetic radiation for its operation (电子)(装置)光电的 integrated optical circuits. 集成光电路。