IPC Subgroup
G03B 13/02 Viewfinders
Introduced: September 1968
Last revised: January 2021
Full Title
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras > Viewfinders
Classification Context
- Section:
- PHYSICS
- Class:
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- Subclass:
- APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
4 direct subcodes
Child Classifications
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- G03B 13/04 of direct-vision type, e.g. frame, sighting mark
- G03B 13/06 with lenses with or without reflectors
- G03B 13/1 adjusting viewfinder field
- G03B 13/16 combined with focusing aids