opera glasses

n.

（观剧用的）小型双眼望远镜；

Opera glasses
Opera-glasses.
Opera-glasses
Looking through the opera glasses: Performance and artifice in The Age of Innocence
Case for opera glasses and the like
Seeing medicine through opera glasses
Head-Mounted Displays as Opera Glasses: Using Mixed-Reality to Deliver an Egalitarian User Experience During Live Events
Through the opera glasses
My Opera Glasses
Spectators in opera-glasses of story-tellers: news story or theatrical story?
Abraham Lincoln's Opera Glasses and Final Speech Up for Sale
Book Review: Binoculars, opera glasses and field glasses / Shire Publications, 1995
Binoculars, Opera Glasses and Field Glasses