G02B OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
Introduced: September 1968
Last revised: January 2000
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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.
Scope Notes
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
Related Keywords
17 direct subcodes
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
- G02B 11/00 Optical objectives characterised by the total number of simple and compound lenses forming the objective and their arrangement
- G02B 13/00 Optical objectives specially designed for the purposes specified below
- G02B 15/00 Optical objectives with means for varying the magnification
- G02B 17/00 Systems with reflecting surfaces, with or without refracting elements
- G02B 19/00 Condensers
- G02B 21/00 Microscopes
- G02B 23/00 Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B 25/00 Eyepieces; Magnifying glasses
- G02B 26/00 Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B 27/00 Optical systems or apparatus not provided for by any of the groups ,
- G02B 3/00 Simple or compound lenses
- G02B 30/00 Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B 5/00 Optical elements other than lenses
- G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B 7/00 Mountings, adjusting means, or light-tight connections, for optical elements
- G02B 9/00 Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or –