Gas cell adapted for carbon dioxide

Details Gas cell adapted for carbon dioxide Gas cell adapted for carbon dioxide

2005-09-13

2005-09-13

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C356S440000, C250S343000

Reexamination Certificate

active

06943885

ABSTRACT:
The invention relates to a gas cell (1) adapted for carbon dioxide and including a cavity (10) which is adapted for a chosen gas volume, a light s source (11) and a light-bundle receiving unit (12). The light source (11) is placed in a focal point (F) associated with a partially elliptical mirror surface (13) forming a reflector for the light source (11) and a first defining surface of the cavity (10). Two other cavity-defining surfaces are comprised of gas-conducting surfaces (14a, 14b) orientated from the end-parts (13a′, 13b′) of the mirror surfaces (13a, 13b). The light-bundle receiving unit (12) is placed in a second focal point (F′) associated with the partially elliptical mirror surfaces (13a, 13b).

REFERENCES:
patent: 4245910 (1981-01-01), Källander
patent: 4557603 (1985-12-01), Oehler et al.
patent: 4657397 (1987-04-01), Oehler et al.
patent: 5009493 (1991-04-01), Koch et al.
patent: 5170064 (1992-12-01), Howe
patent: 6120166 (2000-09-01), Price
patent: 2003/0058439 (2003-03-01), Martin
patent: 97/10460 (1997-03-01), None
patent: 98/09152 (1998-03-01), None

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