G02B 11 - Optical objectives characterised by the total number of simple and compound lenses forming the objective and their arrangement

Patents for G02B 11 - Optical objectives characterised by the total number of simple and compound lenses forming the objective and their arrangement (408)
08/1977
08/30/1977	US4045127 Enlarging lens system
12/1976
12/21/1976	US3998529 Microfilm recorder lens
11/1976
11/30/1976	US3994576 Objective lens system with five elements
11/16/1976	US3992078 Lens structure
10/1976
10/05/1976	US3984155 Compact lens system having a long back focal length and a large relative aperture
03/1976
03/09/1976	US3942877 Short focal length Petzval-type optical system
02/1976
02/17/1976	US3938884 Large aperture photographic lens system
02/03/1976	US3936154 Short focal length large aperture optical system

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