(0)G03H:0/0:
IPC6
SECTION G - PHYSICS
HOLOGRAPHIC PROCESSES OR APPARATUS
G03H
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G 03 H

 HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements G 02 B 5/32; producing stereoscopic or other three-dimensional effects G 02 B 27/22; diffraction-grating systems G 02 B 27/44; systems using moire fringes G 02 B 27/60; optical logic elements G 02 F 3/00; stereo-photography G 03 B 35/00; photosensitive materials or processes for photographic purposes G 03 C; apparatus for processing exposed photographic materials G 03 D; analogue computers performing mathematical operations with the aid of optical elements G 06 E 3/00; authentication, by radiation, of concealed information carried by holograms or diffraction gratings G 06 K 19/16; holographic digital storage G 11 C 13/00) [2]
 

Note
 

This subclass covers 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]

 

 

 
 

 1
/ 00 Holographic processes or apparatus using light, infra-red, or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto [2]

1
/ 02 • Details [2]  

1
/ 04 • Processes or apparatus for producing holograms (G 03 H 1/26 takes precedence) [2]  

1
/ 06 • • using incoherent light [2]  

1
/ 08 • • Synthesising holograms (using electric digital computers G 06 F, G 06 T) [2]  

1
/ 10 • • using modulated reference beam [2]  

1
/ 12 • • • Spatial modulation, e.g. ghost imaging [2]  

1
/ 14 • • • Temporal modulation, e.g. extending depth of field or phase compensation for object motion [2]  

1
/ 16 • • using Fourier transform (G 03 H 1/12, G 03 H 1/14 take precedence; analogue computers G 06 G, e.g. G 06 G 7/19) [2]  

1
/ 18 • • Particular processing of hologram record carriers, e.g. for obtaining blazed holograms [2]  

1
/ 20 • • Copying holograms by holographic means [2]  

1
/ 22 • Processes or apparatus for obtaining an optical image from holograms (G 03 H 1/26 to G 03 H 1/34 take precedence) [2]  

1
/ 24 • • using white light [2]  

1
/ 26 • Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique [2]  

1
/ 28 • • superimposed holograms only [2]  

1
/ 30 • • discrete holograms only [2]  

1
/ 32 • Systems for obtaining speckle elimination [2]  

1
/ 34 • Systems for reducing the space-spatial bandwidth product [2]  
 

 3
/ 00 Holographic processes or apparatus using ultrasonic, sonic, or infrasonic waves for obtaining holograms; Processes or apparatus for obtaining an optical image from them (G 03 H 1/22 takes precedence) [2]
 

 5
/ 00 Holographic processes or apparatus using other electromagnetic waves or subatomic particles for obtaining holograms; Processes or apparatus for obtaining an optical image from them (G 03 H 1/22 takes precedence; construction of electron microscopes H 01 J 37/26) [2]