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IPC 7
  G02B 7/00 - G02B 13/26  
G02B01500-G02B02764
 

SECTION G – PHYSICS


G 02OPTICS (making optical elements or apparatus B24B, B29D 11/00, C03, or other appropriate subclasses or classes; materials per se, see the relevant places, e.g. C03B, C03C)


G 02 BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes precedence; optical elements specially adapted for use in lighting devices or systems thereof F21V 1/00 to F21V 13/00; measuring-instruments, see the relevant subclass of class G01, e.g. optical rangefinders G01C; testing of optical elements, systems, or apparatus G01M 11/00; spectacles G02C; apparatus or arrangements for taking photographs or for projecting or viewing them G03B; sound lenses G10K 11/30; electron and ion "optics" H01J; X-ray "optics" H01J, H05G 1/00; optical elements structurally combined with electric discharge tubes H01J 5/16, H01J 29/89, H01J 37/22; microwave "optics" H01Q; combination of optical elements with television receivers H04N 5/72; optical systems or arrangements in colour television systems H04N 9/00; heating arrangements specially adapted for transparent or reflecting areas H05B 3/84) [1,7]


15/

00Optical objectives with means for varying the magnification (anamorphotic objectives G02B 13/08)

15/

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

15/

04..by changing a part

15/

06...by changing the front part

15/

08...by changing the rear part

15/

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

15/

12...by adding telescopic attachments (G02B 15/14 takes precedence)

15/

14.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/

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

15/

16..with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group (G02B 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 (G02B 15/177 takes precedence)  [4]

15/

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

15/

17.....arranged + - -  [4]

15/

173.....arranged + - +  [4]

15/

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

15/

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

15/

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

15/

24...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/

26....arranged + - -  [4]

15/

28....arranged + - +  [4]


17/

00Systems with reflecting surfaces, with or without refracting elements (microscopes G02B 21/00; telescopes, periscopes G02B 23/00; beam shaping not otherwise provided for G02B 27/09; for beam splitting or combining G02B 27/10; for optical projection G02B 27/18) [6]

17/

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

17/

04..using prisms only

17/

06..using mirrors only

17/

08.Catadioptric systems


19/

00Condensers (for microscopes G02B 21/08)


21/

00Microscopes (eyepieces G02B 25/00; polarising systems G02B 27/28; measuring microscopes G01B 9/04; microtomes G01N 1/06; investigating or analysing surface structures in atomic ranges using scanning-probe techniques, e.g. techniques employing scanning tunnelling or scanning near-field optical microscopes G01N 13/10; details of scanning-probe apparatus, in general G12B 21/00) [1,7]

21/

02.Objectives

21/

04..involving mirrors

21/

06.Means for illuminating specimen

21/

08..Condensers

21/

10...affording dark-field illumination (G02B 21/14 takes precedence)

21/

12...affording bright-field illumination (G02B 21/14 takes precedence)

21/

14...affording illumination for phase-contrast observation

21/

16.adapted for ultra-violet illumination

21/

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

21/

20..Binocular arrangements

21/

22...Stereoscopic arrangements

21/

24.Base structure

21/

26..Stages; Adjusting means therefor

21/

28..with cooling device

21/

30..with heating device

21/

32.Micromanipulators structurally combined with microscopes

21/

33.Immersion oils  [6]

21/

34.Microscope slides, e.g. mounting specimens on microscope slides (preparing specimens for investigation G01N 1/28; means for supporting the objects or the materials to be analysed in electron microscopes H01J 37/20)

21/

36.arranged for photographic purposes or projection purposes (G02B 21/18 takes precedence)


23/

00Telescopes, e.g. binoculars (measuring telescopes G01B 9/06); Periscopes; Instruments for viewing the inside of hollow bodies (diagnostic instruments A61B); Viewfinders (objectives G02B 9/00, G02B 11/00, G02B 15/00, G02B 17/00; eyepieces G02B 25/00); Optical aiming or sighting devices (non-optical aspects of weapon aiming or sighting devices F41G) [4]

23/

02.involving prisms or mirrors (G02B 23/14 takes precedence)

23/

04..for the purpose of beam splitting or combining, e.g. fitted with eyepieces for more than one observer (G02B 23/10 takes precedence)

23/

06..having a focusing action, e.g. parabolic mirror

23/

08..Periscopes

23/

10..reflecting into the field of view additional indications, e.g. from collimator (collimators in general G02B 27/30; graticules G02B 27/34)

23/

12.with means for image conversion or intensification (objectives for image conversion or intensification G02B 13/16; electrical image converters with optical input and optical output H01J 31/50)

23/

14.Viewfinders (for photographic apparatus G03B 13/02)

23/

16.Housings; Caps; Mountings; Supports, e.g. with counterweight (cases or receptacles A45C)

23/

18..for binocular arrangements

23/

20..Collapsible housings (G02B 23/18 takes precedence)

23/

22..Underwater equipments, e.g. for submarine periscope

23/

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

23/

26..using light guides  [4]


25/

00Eyepieces; Magnifying glasses (simple lenses G02B 3/00)

25/

02.with means for illuminating object viewed

25/

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


26/

00Optical 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 F21V; specially adapted for measuring characteristics of light G01J; devices or arrangements, the optical operation of which is modified by changing the optical properties of the medium of the devices or arrangements G02F 1/00; control of light in general G05D 25/00; control of light sources H01S 3/10, H05B 37/00 to H05B 43/00) [4]

26/

02.for controlling the intensity of light  [4]

26/

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

26/

06.for controlling the phase of light (G02B 26/08 takes precedence)  [4]

26/

08.for controlling the direction of light (in light guides G02B 6/35)  [4]

26/

10..Scanning systems (for special applications, see the relevant places, e.g. G03B 27/32, G03F 3/08, G03G 15/04, G09G 3/00, H04N)  [4]

26/

12...using multifaceted mirrors  [6]


27/

00Other optical systems; Other optical apparatus (means for bringing-about special optical effects in shop-windows, showcases A47F, e.g. A47F 11/06; optical toys A63H 33/22; designs or pictures characterised by special light effects B44F 1/00)

27/

01.Head-up displays  [6]

27/

02.Viewing or reading apparatus (stereoscopic systems G02B 27/22; of the projection type G03B; slide-changing apparatus G03B)

27/

04..having collapsible parts

27/

06..with moving-picture effect

27/

08..Kaleidoscopes

27/

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

27/

10.Beam splitting or combining systems (mixing and splitting light signals using optical waveguides G02B 6/28; polarising systems G02B 27/28)  [4]

27/

12..operating by refraction only

27/

14..operating by reflection only

27/

16..used as aids for focusing

27/

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

27/

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

27/

22.for producing stereoscopic or other three-dimensional effects (in microscopes G02B 21/22; viewing apparatus G02B 27/02)

27/

24..involving reflecting prisms and mirrors only

27/

26..involving polarising means

27/

28.for polarising (used in stereoscopes G02B 27/26)

27/

30.Collimators

27/

32.Fiducial marks or measuring scales within the optical system

27/

34..illuminated

27/

36..adjustable

27/

40.Optical focusing aids (beam splitting or combining systems G02B 27/10)

27/

42.Diffraction optics (G02B 27/60 takes precedence)  [3]

27/

44..Grating systems; Zone plate systems (G02B 27/46 takes precedence; spectrometry G01J)  [3]

27/

46..Systems using spatial filters (character recognition G06K 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/

48.Laser speckle optics (speckle suppression in holography G03H 1/32)  [3]

27/

50.Optics for phase object visualisation  [3]

27/

52..Phase contrast optics (in microscopes G02B 21/14)  [3]

27/

54..Schlieren-optical systems  [3]

27/

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

27/

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

27/

60.Systems using moire fringes (means for converting the output of a sensing member using diffraction gratings G01D 5/38)  [3]

27/

62.Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems (adjusting means being part of the system to be assembled G02B 7/00)  [3]

27/

64.Imaging systems using optical elements for stabilisation of the lateral and angular position of the image (focusing systems G02B 7/04; adjustment of optical system relative to image or object surface G03B 5/00)  [3]


  G02B 7/00 - G02B 13/26   
 

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