G02B OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
Introduced: September 1968
Description
G02B covers optical components, assemblies, and systems designed to control, direct, or modify light propagation. This subclass encompasses lenses, mirrors, prisms, diffractive elements, filters, polarizers, beam splitters, and optical coatings, as well as integrated optical systems such as microscopes, telescopes, and viewing devices. Also included are optical design principles, aberration correction methods, and auxiliary components like mounts and alignment mechanisms. Adjacent subclasses G02C and G02D address spectacles/contact lenses and optical measuring instruments respectively, while G02F covers electro-optical devices with active control of light properties.
Additional Content IPC
Glossary
in broken contact such that the air-space between the constituents of an optical member has no optical influence. light applies to electromagnetic radiation not only in the portion of the electromagnetic spectrum which can be perceived by the human eye (i.e. visible) but also to ultraviolet or infrared radiation. optical optics applies not only to visible light but also to ultraviolet or infrared radiation. simple lens or prism simple lens simple lenses simple prism simple prisms simple single lens or prism compound lens or prism compound lens compound lenses compound prism compound prisms optical member the constituents of which are either close together without air-space or in broken contact; see also the Note after group . objective objectives lens or optical system designed to produce a real image of a real object. eyepiece eyepieces lens or optical system designed to produce a virtual image for viewing by the eye or by another optical system. front is determined by looking from the more distant conjugate. rear is determined by looking from the more distant conjugate.
Application references
Optical elements specially adapted for use in lighting devices or systems thereof Spectacles Apparatus or arrangements for taking photographs or for projecting or viewing them Optical elements structurally combined with electric discharge tubes , , Combination of optical elements with television receivers Optical systems or arrangements in colour television systems
Of 18 combined children, 16 exist in both systems.
1 codes are CPC-only extensions, 1 exist only in IPC.
Note: 1 CPC extensions are marked as secondary classification only.
8 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G02B 1/00 Optical elements characterised by the material of which they are made; Optical coatings for optical elements +1 CPC IPC+CPC Available in IPC and CPC
- G02B 11/00 Optical objectives characterised by the total number of simple and compound lenses forming the objective and their arrangement −6 IPC IPC only IPC only
- G02B 13/00 Optical objectives specially designed for the purposes specified below (with variable magnification G02B15/00) +3 CPC IPC+CPC Available in IPC and CPC
- G02B 15/00 Optical objectives with means for varying the magnification (anamorphotic objectives G02B13/08) IPC+CPC Available in IPC and CPC
- G02B 17/00 Systems with reflecting surfaces, with or without refracting elements +4 CPC IPC+CPC Available in IPC and CPC
- G02B 2207/00 Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups 2nd only +11 CPC CPC only CPC only
- G02B 23/00 Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices IPC+CPC Available in IPC and CPC
- G02B 26/00 Optical devices or arrangements for the control of light using movable or deformable optical elements (control of light by modification of the optical properties of the media of the elements involved therein G02F1/00) since 1985 +4 CPC IPC+CPC Available in IPC and CPC
- G02B 27/00 Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 +8 CPC IPC+CPC Available in IPC and CPC
- G02B 30/00 Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images (in microscopes G02B21/22) since 2020 IPC+CPC Available in IPC and CPC
- G02B 5/00 Optical elements other than lenses (light guides G02B6/00; optical logic elements G02F3/00) +4 CPC IPC+CPC Available in IPC and CPC
- G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings since 1985 +2 CPC IPC+CPC Available in IPC and CPC
- G02B 7/00 Mountings, adjusting means, or light-tight connections, for optical elements +6 CPC IPC+CPC Available in IPC and CPC
- G02B 9/00 Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - (G02B15/00 takes precedence) IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G02,2013–2023, worldwide · Source: EPO PATSTAT
- BOE TECHNOLOGY GROUP COMPANY 13,460
- BOE TECHNOLOGY GROUP COMPANY CN 11,745
- SAMSUNG DISPLAY KR 10,908
- CANON 9,072
- FUJIFILM JP 7,957
- SAMSUNG ELECTRONICS COMPANY KR 7,805
- LG DISPLAY COMPANY KR 6,558
- CHINESE ACADEMY OF SCIENCES 5,855
- NITTO DENKO CORPORATION JP 5,817
- OLYMPUS CORPORATION JP 4,579
Top Applicants (CPC)
Class G02,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG DISPLAY KR 14,409
- BOE TECHNOLOGY GROUP COMPANY CN 14,236
- BOE TECHNOLOGY GROUP COMPANY 11,826
- SAMSUNG ELECTRONICS COMPANY KR 10,141
- FUJIFILM JP 8,506
- LG DISPLAY COMPANY KR 7,558
- NITTO DENKO CORPORATION JP 6,306
- OLYMPUS CORPORATION JP 5,336
- SONY CORPORATION JP 5,097
- CANON JP 4,814