Communications: electrical – Traffic control indicator
Reexamination Certificate
2005-12-14
2010-12-28
Nguyen, Phung (Department: 2612)
Communications: electrical
Traffic control indicator
Reexamination Certificate
active
07859430
ABSTRACT:
An LED road traffic signal light equipped with symbol patterning by chromaticity where a color-blind person can distinguish between red and yellow LED signal lights even at a predetermined distance without causing entire mixture discoloring. A red LED signal light comprising a group of LED elements emitting red light, wherein the group of LED elements is mixed with an identification LED element having a chromaticity different from that of the red LED element, or mixed with an identification LED element having a different luminance, or mixed with an identification LED element combining different chromaticity and luminance, thus constituting an LED road traffic signal light which can be distinguished by both physically unimpaired person and color-blind person.
REFERENCES:
patent: 6051932 (2000-04-01), Sheu et al.
patent: 7145571 (2006-12-01), Jones et al.
patent: 2003/0137432 (2003-07-01), Wiseman
patent: 2003/0156044 (2003-08-01), Wiseman
patent: 2005/0190075 (2005-09-01), Wiseman
patent: 8-138192 (1996-05-01), None
patent: 10-3596 (1998-01-01), None
patent: 11-61751 (1999-03-01), None
patent: 11-110692 (1999-04-01), None
patent: 2001-14591 (2001-01-01), None
patent: 2002-231003 (2002-08-01), None
patent: 2004-217723 (2004-08-01), None
patent: 2006-18625 (2006-01-01), None
Jordan and Hamburg LLP
Nakamura Sangyo Gakuen
Nguyen Phung
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