Coherent light generators – Particular component circuitry – For driving or controlling laser
Reexamination Certificate
2007-10-09
2007-10-09
Owens, Douglas W. (Department: 2821)
Coherent light generators
Particular component circuitry
For driving or controlling laser
C372S038090
Reexamination Certificate
active
10835701
ABSTRACT:
An eye safety detection circuit for use in a laser transmitter. The eye safety detection circuit shuts the laser down if the laser is emitting excessive optical energy to the point of being unsafe to a user. The eye safety detection circuit includes a laser current detection circuit that is configured to detect when there is a potential that the laser is emitting light at levels that exceed a predetermined threshold. If the laser were to immediately turn off under this condition, the laser may be turned off prematurely. Instead, the eye safety detection circuit includes a timer circuit that causes the laser to cease operation only after one or more such conditions have been met for a predetermined period of time.
REFERENCES:
patent: 5665942 (1997-09-01), Williams et al.
patent: 5793477 (1998-08-01), Laakmann
patent: 5953110 (1999-09-01), Burns
patent: 6658030 (2003-12-01), Baumgartner et al.
patent: 6661817 (2003-12-01), Ames et al.
patent: 6792020 (2004-09-01), Romm
patent: 6999011 (2006-02-01), Case et al.
patent: 7120179 (2006-10-01), Fennelly et al.
Light Greta
Moran Timothy G.
Finisar Corporation
Owens Douglas W.
Vu Jimmy
Workman Nydegger
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