F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V3/00—Globes; Bowls; Cover glasses
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
Liquid Crystal Substances
(AREA)
Diaphragms For Electromechanical Transducers
(AREA)
Shielding Devices Or Components To Electric Or Magnetic Fields
(AREA)