- 光学纤维 guāngxuéxiānwéi optical fiberA glass fiber used to transmit light signals through total internal reflection. It is as thin as a human hair and offers high speed, large capacity, and security. Also known as [[光纤|光纖|guang1 xian1]] or [[光导纤维|光導纖維|guang1 dao3 xian1 wei2]].
- 光学字符识别 guāngxuézìfúshíbié optical character recognitionoptical character recognition; OCR
- 光学显微镜 guāngxuéxiǎnwēijìng optical microscopea type of microscope that uses visible light and a system of lenses to magnify images of small objects
- 光学玻璃 guāngxuébōli optical glassHigh-quality glass with specific refractive and dispersive properties used to manufacture lenses for instruments such as cameras, telescopes, and microscopes
- 光学仪器 guāngxuéyíqì optical instrumentAn instrument such as a telescope or microscope that uses lenses, mirrors, or prisms to manipulate light and show images or analyze optical properties.properties
- 光学雷达 guāngxuéléidá lidarlidar; optical radar technology used for measuring distances using laser light
- 几何光学 jǐhéguāngxué geometric opticsthe branch of optics that describes light propagation in terms of rays
- 纤维光学 xiānwéiguāngxué fiber opticsthe science and technology of using thin glass or plastic threads to transmit light, commonly used for high-speed communications and medical equipment
- 非线性光学 fēixiànxìngguāngxué nonlinear opticsthe branch of physics that deals with the interaction of light with matter in which the response depends nonlinearly on the intensity of the light