1. Optics is the branch of science concerned with vision, sight and light.
    光学是有关视觉、视力和光的一门学科。

1. 光学：根据国际半导体技术蓝图(ITRS)的定义,SiP是指将多个具有不同功能的主动元件与被动元件,以及诸如微机电系统(MEMS)、光学(Optic)元件等其他元件组合在同一封装,成为可提供多种功能的单颗标准封装元件,形成一个系统或子系统.

2. optic

2. 镜片：opsiometer 视力计 | optic 镜片 | optical activity 旋光度,旋光性

3. 光学的;镜片：Ophthalmic products 眼科用品 | Optic 光学的;镜片 | Optical 光学的

1. 眼的；视力的；视觉的
    Optic means relating to the eyes or to sight.

    e.g. The reason for this is that the optic nerve is a part of the brain.
           这其中的原因在于视神经是大脑的一部分。

1. the organ of sight

    Synonym: eyeoculus

1. relating to or using sight

    e.g. ocular inspection
           an optical illusion
           visual powers
           visual navigation

    Synonym: ocularopticalvisual

2. of or relating to or resembling the eye

    e.g. ocular muscles
           an ocular organ
           ocular diseases
           the optic (or optical) axis of the eye
           an ocular spot is a pigmented organ or part believed to be sensitive to light

    Synonym: ocularopticalopthalmic