G02B9/44 - CPC Classification Index

ClassID:

174465 ⎘

G02B9/44 - CPC Classification

Classification description:

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 biconcave

Sub-classes:

G02B9/46 » one - component being compound 0
G02B9/48 » two - components being compound 0

Recent Application in this class:

20240168261

2024-05-23

PHOTOGRAPHING SYSTEM LENS ASSEMBLY, IMAGE CAPTURING UNIT AND ELECTRONIC DEVICE

20220137334

2022-05-05

Camera lens assembly comprising four lenses of +−++, ++−+ or +−−+ regractive powers

20210199921

2021-07-01

Camera lens assembly comprising four lenses of +−++, ++−+ or +−−+ regractive powers