174462 ⎘
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only arranged + -- + both - components being meniscus
Sub-classes:Optical Imaging System
#2OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS
#3Optical imaging system
#4Optical imaging system
#5Optical imaging system
#6Lens assembly
#7Optical imaging system
#8Lens assembly
#9Optical imaging lens
#10Teleconverter lens and imaging apparatus
#11Optical lens system for taking image
#12Imaging lens
#13Subminiature imaging optical system
#14Optical device for observing samples on a support, designed in particular for a cytometer