About: optical design

Premodifier: optical
Head noun: design

Same concepts
http://dbpedia.org/resource/Optical_lens_design

Broader concepts

label	provenance	confidence
factor	isap:392687111	0.375867
little different	isap:423382296	0.325889
lens	isap:494871638	0.184177

Narrower concepts

label	provenance	confidence
catadioptric	isap:81647878	0.342372