About: refractive optical element

Premodifier: refractive optical
Head noun: element

Same concepts

Broader concepts

label	provenance	confidence
optical element	isap:437869464	0.811202
lens	isap:79666201	0.428237

Narrower concepts

label	provenance	confidence
prism	isap:229558725	0.346009
lens	isap:5843416	0.251379