luminous body (e.g. of a shooting star); bright metal; sliced fish with the silver skin left on (iwashi, aji, sayori, sanma, kohada, etc.); 20-point card; bright
benefiting from the influence of a master or parent
ray of hope; glimmer of hope
rise and fall; ups and downs; shame and glory; bright side and dark side; (lit.) light and shadow
optical fiber; optical fibre
optical cable; optical fibre
optical disk; digital optical disk
optical communications line; optical network
photocatalyst; photocatalysis
rapid prototyping (machine); laser etching (machine)
the light comes from the East; the light rises from the East; ex oriente lux
optical memory card; optical card
leaking through of light (e.g. through a curtain); light leakage
Ochromonas vischeri (species of golden alga)
photodissociation; photo-dissociation
having a famous parent is the best way to fame
optical storage media; optical storage medium
Optical Transport Network; OTN
photolysis; photodecomposition; photodissociation
photonics; optical engineering