|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G03 |
PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY [2]

|  | G03B |
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; ACCESSORIES THEREFOR (optical parts of such apparatus Fulltext... Hierarchy... Expanded...G02B; preparing or processing photosensitive material Fulltext... Hierarchy... Expanded...G03C, Fulltext... Hierarchy... Expanded...G03D)

|  | G03B |
Note(s) So far as processes are concerned, this sub-class covers only processes characterised by the use or manipulation of apparatus classifiable per se in this sub-class.

|  | G03C |
PHOTOSENSITIVE COMPOSITIONS OR BASES CARRYING THEM; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in Fulltext... Hierarchy... Expanded...G03B; electrography, electrophotography, magnetography Fulltext... Hierarchy... Expanded...G03G)

|  | G03D |
APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR (chemical processes for photographic materials Fulltext... Hierarchy... Expanded...G03C; electrographic, electrophotographic, or magnetographic methods or apparatus Fulltext... Hierarchy... Expanded...G03G)

|  | G03F |
PHOTOMECHANICAL PRODUCTION OF PRINTING SURFACES; ORIGINALS THEREFOR (phototype composing apparatus Fulltext... Hierarchy... Expanded...B41B; electrography, sensitive layers or processes therefor Fulltext... Hierarchy... Expanded...G03G)

|  | G03G |
ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY (thermoplastic recording of information Fulltext... Hierarchy... Expanded...G11B, Fulltext... Hierarchy... Expanded...G11C; thermoplastic recording of television signals Fulltext... Hierarchy... Expanded...H04N 5/82)

|  | G03G |
Note(s) This sub-class deals with the production of permanent directly-visible pictures in conformity with an original picture or document, using an imagewise distribution of an electric or magnetic quantity, such as a charge pattern, an electric conductivity pattern, or a magnetic pattern. Using electric signals for the transmission of the picture information from the original to the reproduction, i.e. pictorial communication, is dealt with in sub-class Fulltext... Hierarchy... Expanded...H04N. The production of pictures by heat patterns exclusively, not using an electrostatic or magnetic pattern, is classified in group Fulltext... Hierarchy... Expanded...B41M 5/00. The production of prints by transferring ink from a printing form to a printing surface, without physical contact and using the force of an electrostatic field, is dealt with in sub-class Fulltext... Hierarchy... Expanded...B41M.

|  | G03H |
HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements Fulltext... Hierarchy... Expanded...G02B 5/32; producing stereoscopic or other three-dimensional effects Fulltext... Hierarchy... Expanded...G02B 27/22; diffraction-grating systems, Schlieren-optical systems, systems using moiré fringes Fulltext... Hierarchy... Expanded...G02B 27/38; optical logic elements Fulltext... Hierarchy... Expanded...G02F 3/00; stereo-photography Fulltext... Hierarchy... Expanded...G03B 35/00, Fulltext... Hierarchy... Expanded...G03C 9/00; analogue computers performing mathematical operations with the aid of optical elements Fulltext... Hierarchy... Expanded...G06G 9/00; holographic digital storage Fulltext... Hierarchy... Expanded...G11C 17/00) [2]

|  | G03H |
Note(s) This sub-class comprises means for producing a record of the phase and amplitude information of a wave-front, which information can be used to reconstruct the original wave-front, or means to reconstruct the original wave-front from a record containing the phase and amplitude information of the wave-front. [2]