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IPC 7
F21K-F21K00700

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING


F 21LIGHTING (electric aspects or elements, see section H, e.g. electric light sources H01J, H01K, H05B)


F 21 KLIGHT SOURCES NOT OTHERWISE PROVIDED FOR



2/

00Light sources using luminescence (luminescent materials C09K 11/00; selection of luminescent materials for light screens F21V 9/16; using excitation by radioactivity G21H 3/02, H01J 65/06, H01J 65/08; transforming the wavelength of the light of gas- or vapour-discharge lamps by luminescence H01J 61/42; electroluminescent light sources H05B 33/00) [2,7]

2/

04.using triboluminescence; using thermoluminescence

2/

06.using chemiluminescence  [3]

2/

08..activated by an electric field, i.e. electrochemiluminescence  [3]


5/

00Light sources using charges of combustible material, e.g. illuminating flash devices (explosive or thermic compositions C06B; fireworks F42B 4/00; photographic flash units G03B 15/03) [3,5]

5/

04.Plural charges, e.g. associated for sequential ignition (F21K 5/06, F21K 5/12 take precedence)  [5]

5/

06.Charge containment  [5]

5/

08..Charge held in non-disrupting container, e.g. photo-flash bulb  [5]

5/

10...bearing a coating  [5]

5/

12.Charge ignition  [5]

5/

14..percussive  [5]

5/

16..electrical (circuit arrangements H05B 43/02)  [5]

5/

18...Electrically-ignited primers  [5]

5/

20.Charge feeding means  [5]

5/

22.Protective light shields  [5]


7/

00Other light sources


  
 

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