IPC Main Group
G02B 23/00 Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
Scope Notes
Application references: Measuring telescopes Diagnostic instruments
Related Keywords
BINOCULARSTELESCOPES
5 direct subcodes
Child Classifications
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- G02B 23/02 involving prisms or mirrors
- G02B 23/12 with means for image conversion or intensification
- G02B 23/14 Viewfinders
- G02B 23/16 Housings; Caps; Mountings; Supports, e.g. with counterweight
- G02B 23/24 Instruments for viewing the inside of hollow bodies, e.g. fibrescopes