IPC 6 English version G02B 15/00-G02B 27/64

G02B01500-G02B02764

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)

15/

Optical objectives with means for varying the magnification (anamorphotic objectives G 02 B 13/08)

15/

by changing, adding, or subtracting a part of the objective, e.g. convertible objective

15/

by changing a part

15/

by changing the front part

15/

by changing the rear part

15/

by adding a part, e.g. close-up attachment

15/

by adding telescopic attachments (G 02 B 15/14 takes precedence)

15/

by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective [4]

15/

compensation by means of only one movement or by means of only linearly related movements, e.g. optical compensation [4]

15/

with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group (G 02 B 15/22 takes precedence) [4]

15/

163

having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group (G 02 B 15/177 takes precedence) [4]

15/

167

having an additional fixed front lens or group of lenses [4]

15/

arranged + – – [4]

15/

173

arranged + – + [4]

15/

177

having a negative front lens or group of lenses [4]

15/

having an additional movable lens or lens group for varying the objective focal length [4]

15/

with movable lens means specially adapted for focusing at close distances [4]

15/

having a front fixed lens or lens group and two movable lenses or lens groups in front of a fixed lens or lens group [4]

15/

arranged + – – [4]

15/

arranged + – + [4]

17/

Systems with reflecting surfaces, with or without refracting elements (microscopes G 02 B 21/00; telescopes, periscopes G 02 B 23/00; beam shaping not otherwise provided for G 02 B 27/09; for beam splitting or combining G 02 B 27/10; for optical projection G 02 B 27/18) [6]

17/

Catoptric systems, e.g. image erecting and reversing system

17/

using prisms only

17/

using mirrors only

17/

Catadioptric systems

19/

Condensers (for microscopes G 02 B 21/08)

21/

Microscopes (eyepieces G 02 B 25/00; polarising systems G 02 B 27/28; measuring microscopes G 01 B 9/04; microtomes G 01 N 1/06)

21/

Objectives

21/

involving mirrors

21/

Means for illuminating specimen

21/

Condensers

21/

affording dark-field illumination (G 02 B 21/14 takes precedence)

21/

affording bright-field illumination (G 02 B 21/14 takes precedence)

21/

affording illumination for phase-contrast observation

21/

adapted for ultra-violet illumination

21/

Arrangements with more than one light-path, e.g. for comparing two specimens

21/

Binocular arrangements

21/

Stereoscopic arrangements

21/

Base structure

21/

Stages; Adjusting means therefor

21/

with cooling device

21/

with heating device

21/

Micromanipulators structurally combined with microscopes

21/

Immersion oils [6]

21/

Microscope slides, e.g. mounting specimens on microscope slides (preparing specimens for investigation G 01 N 1/28; means for supporting the objects or the materials to be analysed in electron microscopes H 01 J 37/20)

21/

arranged for photographic purposes or projection purposes (G 02 B 21/18 takes precedence)

23/

Telescopes, e.g. binoculars (measuring telescopes G 01 B 9/06); Periscopes; Instruments for viewing the inside of hollow bodies (diagnostic instruments A 61 B); Viewfinders (objectives G 02 B 9/00, G 02 B 11/00, G 02 B 15/00, G 02 B 17/00; eyepieces G 02 B 25/00); Optical aiming or sighting devices (non-optical aspects of weapon aiming or sighting devices F 41 G) [4]

23/

involving prisms or mirrors (G 02 B 23/14 takes precedence)

23/

for the purpose of beam splitting or combining, e.g. fitted with eyepieces for more than one observer (G 02 B 23/10 takes precedence)

23/

having a focusing action, e.g. parabolic mirror

23/

Periscopes

23/

reflecting into the field of view additional indications, e.g. from collimator (collimators in general G 02 B 27/30; graticules G 02 B 27/34)

23/

with means for image conversion or intensification (objectives for image conversion or intensification G 02 B 13/16; electrical image converters with optical input and optical output H 01 J 31/50)

23/

Viewfinders (for photographic apparatus G 03 B 13/02)

23/

Housings; Caps; Mountings; Supports, e.g. with counterweight (cases or receptacles A 45 C)

23/

for binocular arrangements

23/

Collapsible housings (G 02 B 23/18 takes precedence)

23/

Underwater equipments, e.g. for submarine periscope

23/

Instruments for viewing the inside of hollow bodies, e.g. fibrescopes [4]

23/

using light guides [4]

25/

Eyepieces; Magnifying glasses (simple lenses G 02 B 3/00)

25/

with means for illuminating object viewed

25/

affording a wide-angle view, e.g. through a spy-hole

26/

Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating (mechanically operable parts of lighting devices for the control of light order F 21 V; specially adapted for measuring characteristics of light G 01 J; devices or arrangements, the optical operation of which is modified by changing the optical properties of the medium of the devices or arrangements G 02 F 1/00; control of light in general G 05 D 25/00; control of light sources H 01 S 3/10, H 05 B 37/00 to H 05 B 43/00) [4]

26/

for controlling the intensity of light [4]

26/

by periodically varying the intensity of light, e.g. using choppers [4]

26/

for controlling the phase of light (G 02 B 26/08 takes precedence) [4]

26/

for controlling the direction of light (in light guides G 02 B 6/35) [4]

26/

Scanning systems (for special applications, see the relevant places, e.g. G 03 B 27/32, G 03 F 3/08, G 03 G 15/04, G 09 G 3/00, H 04 N) [4]

26/

using multifaceted mirrors [6]

27/

Other optical systems; Other optical apparatus (means for bringing-about special optical effects in shop-windows, showcases A 47 F, e.g. A 47 F 11/06; optical toys A 63 H 33/22; designs or pictures characterised by special light effects B 44 F 1/00)

27/

Head-up displays [6]

27/

Viewing or reading apparatus (stereoscopic systems G 02 B 27/22; of the projection type G 03 B; slide-changing apparatus G 03 B)

27/

having collapsible parts

27/

with moving-picture effect

27/

Kaleidoscopes

27/

Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for [6]

27/

Beam splitting or combining systems (mixing and splitting light signals using optical waveguides G 02 B 6/28; polarising systems G 02 B 27/28) [4]

27/

operating by refraction only

27/

operating by reflection only

27/

used as aids for focusing

27/

for optical projection, e.g. combination of mirror and condenser and objective

27/

for imaging minute objects, e.g. light-pointer

27/

for producing stereoscopic or other three-dimensional effects (in microscopes G 02 B 21/22; viewing apparatus G 02 B 27/02)

27/

involving reflecting prisms and mirrors only

27/

involving polarising means

27/

for polarising (used in stereoscopes G 02 B 27/26)

27/

Collimators

27/

Fiducial marks or measuring scales within the optical system

27/

illuminated

27/

adjustable

27/

Optical focusing aids (beam splitting or combining systems G 02 B 27/10)

27/

Diffraction optics (G 02 B 27/60 takes precedence) [3]

27/

Grating systems; Zone plate systems (G 02 B 27/46 takes precedence; spectrometry G 01 J) [3]

27/

Systems using spatial filters (character recognition G 06 K 9/00) [3]

Note

In this group, the filter may be in any plane, e.g. the image or the Fourier transfer plane. [3]

27/

Laser speckle optics (speckle suppression in holography G 03 H 1/32) [3]

27/

Optics for phase object visualisation [3]

27/

Phase contrast optics (in microscopes G 02 B 21/14) [3]

27/

Schlieren-optical systems [3]

27/

Optics using evanescent waves, i.e. inhomogeneous waves [3]

27/

Optics for apodization or superresolution; Optical synthetic aperture systems [3]

27/

Systems using moire fringes (means for converting the output of a sensing member using diffraction gratings G 01 D 5/38) [3]

27/

Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems (adjusting means being part of the system to be assembled G 02 B 7/00) [3]

27/

Imaging systems using optical elements for stabilisation of the lateral and angular position of the image (focusing systems G 02 B 7/04; adjustment of optical system relative to image or object surface G 03 B 5/00) [3]

G02B 7/00 - G02B 13/26