IPC 6 English version G02B !A-G02B 6/54

G02-G02B00654

SECTION G– PHYSICS

G 02

OPTICS (making optical elements or apparatus B 24 B, B 29 D 11/00, C 03, or other appropriate subclasses or classes; materials per se, see the relevant places, e.g. C 03 B, C 03 C)

G 02 B

OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G 02 F takes precedence; measuring-instruments, see the relevant subclass of class G 01, e.g. optical rangefinders G 01 C; testing of optical elements, systems, or apparatus G 01 M 11/00; spectacles G 02 C; apparatus or arrangements for taking photographs or for projecting or viewing them G 03 B; sound lenses G 10 K 11/30; electron and ion "optics" H 01 J; X-ray "optics" H 01 J, H 05 G 1/00; optical elements structurally combined with electric discharge tubes H 01 J 5/16, H 01 J 29/89, H 01 J 37/22; microwave "optics" H 01 Q; combination of optical elements with television receivers H 04 N 5/72; optical systems or arrangements in colour television systems H 04 N 9/00; heating arrangements specially adapted for transparent or reflecting areas H 05 B 3/84)

Note

In this subclass, the following terms or expressions are used with the meanings indicated:

–

"simple lens or prism" means a single lens or prism;

–

"compound lens or prism" means an optical member, the constituents of which either are close together without air-space or (except in group G 02 B 11/00) are "in broken contact", i.e. with the air-space between the constituents having no essential optical influence;

–

"objective" means a lens or an optical system designed to produce a real image of a real object;

–

"eyepiece" means a lens or an optical system designed to produce a virtual image for viewing by the eye or by another optical system;

–

"front" or "rear" is determined by looking from the more distant conjugate.

Optical elements characterised by the material of which they are made (compositions of optical glasses C 03 C 3/00); Optical coatings for optical elements

made of crystals, e.g. rock-salt, semiconductors (G 02 B 1/08 takes precedence)

made of organic materials, e.g. plastics (G 02 B 1/08 takes precedence)

made of fluids in transparent cells

made of polarising materials

Optical coatings produced by application to, or surface treatment of, optical elements (G 02 B 1/08 takes precedence)

Anti-reflection coatings [6]

by surface treatment, e.g. by irradiation

Simple or compound lenses (artificial eyes A 61 F 2/14; spectacle lenses or contact lenses for the eyes G 02 C; watch or clock glasses G 04 B 39/00)

with non-spherical faces (G 02 B 3/10 takes precedence)

with continuous faces that are rotationally symmetrical but deviate from a true sphere

with cylindrical or toric faces

with discontinuous faces, e.g. Fresnel lens

Bifocal lenses; Multifocal lenses

Fluid-filled or evacuated lenses

of variable focal length

Optical elements other than lenses (light guides G 02 B 6/00; optical logic elements G 02 F 3/00) [4]

Diffusing elements; Afocal elements

Prisms

Fluid-filled or evacuated prisms

Mirrors

Multifaceted or polygonal mirrors [6]

with curved faces

Reflex reflectors

122

cube corner, trihedral or triple reflector type [2]

124

plural reflecting elements forming part of a unitary plate or sheet [2]

126

including curved refracting surface [2]

128

transparent spheres being embedded in matrix [2]

plural curved refracting elements forming part of a unitary body [2]

132

with individual reflector mounting means [2]

134

including a threaded mounting member [2]

136

plural reflecting elements forming part of a unitary body (G 02 B 5/124 takes precedence) [2]

Diffracting gratings

Filters (polarising elements G 02 B 5/30; filters specially adapted for photographic purposes G 03 B 11/00)

Absorbing filters

Photochromic filters [2]

Liquid filters (G 02 B 5/23 takes precedence) [2]

Reflecting filters (G 02 B 5/28 takes precedence)

Interference filters

Polarising elements (light-modulating devices G 02 F 1/00)

Holograms used as optical elements (processes or apparatus for producing holograms G 03 H) [2]

Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings [4,6]

Optical fibre with cladding (G 02 B 6/16 takes precedence; mechanical structures for providing tensile strength and external protection G 02 B 6/44) [4]

formed by bundles of fibres (G 02 B 6/24 takes precedence) [4]

the relative position of the fibres being the same at both ends, e.g. for transporting images [4]

with fibre bundle in form of plate [4]

of the optical waveguide type (G 02 B 6/24 takes precedence; devices or arrangements for the control of light by electric, magnetic, electro-magnetic or acoustic means G 02 F 1/00; transferring the modulation of modulated light G 02 F 2/00; optical logic elements G 02 F 3/00; optical analogue/digital converters G 02 F 7/00; stores using opto-electronic devices G 11 C 11/42; electric waveguides H 01 P; transmission of information by optical means H 04 B 10/00; multiplex systems H 04 J 14/00) [4]

of the integrated circuit kind (production or processing of single crystals C 30 B; electric integrated circuits H 01 L 27/00) [4]

122

Basic optical elements, e.g. light-guiding paths [6]

124

Geodesic lenses or integrated gratings [6]

125

Bends, branchings or intersections [6]

126

using polarisation effects [6]

Integrated optical circuits characterised by the manufacturing method [6]

132

by deposition of thin films [6]

134

by substitution by dopant atoms [6]

136

by etching [6]

138

by using polymerisation [6]

Mode converters [4]

Optical fibre with cladding (mechanical structures for providing tensile strength and external protection G 02 B 6/44) [4]

with polarisation-maintaining properties [6]

with core or cladding having graded refractive index [4]

with non-solid core or cladding [4]

core or cladding comprising multiple layers [4]

Coupling light guides (for electric waveguides H 01 P 1/00) [4,5]

245

Removing protective coverings of light guides before coupling [5]

Preparing the ends of light guides for coupling, e.g. cutting [5]

255

Splicing of light guides, e.g. by fusion or bonding [5]

Optical coupling means (G 02 B 6/36, G 02 B 6/42 take precedence) [4]

with polarisation selective and adjusting means (polarisation elements in general G 02 B 5/30; polarisation systems in general G 02 B 27/28; optical polarisation multiplex systems H 04 J 14/06) [6]

having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals [4]

287

Structuring of light guides to shape optical elements with heat application (G 02 B 6/255 takes precedence) [6]

293

with wavelength selective means (for optical elements in use, see the relevant subgroups of this subclass; optical wavelength-division multiplexing systems H 04 J 14/02) [6]

for use between fibre and thin-film device [4]

having lens focusing means [4]

utilising prism or grating [4]

having switching means (optical switching in general G 02 B 26/08; by changing the optical properties of the medium G 02 F 1/00) [6]

Mechanical coupling means (G 02 B 6/255, G 02 B 6/42 take precedence) [4,5]

having fibre to fibre mating means [4]

having fibre bundle mating means [4]

Coupling light guides with opto-electronic elements [4]

Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections (light-emissive or light-sensitive semiconductor devices H 01 L 27/00, H 01 L 31/00, H 01 L 33/00) [6]

Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables (cables incorporating electric conductors and optical fibres H 01 B 11/22) [4]

Processes or apparatus adapted for installing optical fibres or optical cables (installation of cables containing electric conductors and optical fibres H 02 G) [6]

Overhead installation [6]

Underground or underwater installation; Installation through tubing, conduits or ducts [6]

using fluid, e.g. air [6]

using mechanical means, e.g. pulling or pushing devices [6]

G02B 7/00 - G02B 13/26