Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1124/CHENP/2012 A
(19) INDIA
(22) Date of filing of Application :03/02/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : LIGHT GUIDING SYSTEM AND A METHOD FOR CONTROLLING THE SAME
(51) International classification :H05B37/02
(31) Priority Document No :09167261.8
(32) Priority Date :05/08/2009
(33) Name of priority country :EPO
(86) International Application No
Filing Date
(87) International Publication No : NA
(61) Patent of Addition to Application
:NA
Number
:NA
Filing Date
(62) Divisional to Application Number
Filing Date
:PCT/IB2010/053455
:29/07/2010
:NA
:NA
(71)Name of Applicant :
1)KONINKLIJKE PHILIPS ELECTRONICS N.V.
Address of Applicant :GROENEWOUDSEWEG 1
EINDHOVEN 5621 BA NETHERLANDS
(72)Name of Inventor :
1)KNIBBE Engel J.
2)ERTZ Alexander
3)KLEE Mareike
4)VERHEES Leo
(57) Abstract :
According to the present invention a light guidance system for adapted illumination in emergency or power cut situations is
provided wherein the light guidance system is connected to an auxiliary power supply system (101) and comprises at least one
light unit (103) adapted to emit light for illuminating surroundings and a control unit (100) adapted to increase a light level of the
light unit (103) according to a presence signal indicating the presence of a person wherein the increasing of the light level is
adjusted to enable a mandatory lighting period and a mandatory light level by considering a power value of the auxiliary power
supply system (101).
No. of Pages : 24 No. of Claims : 15
The Patent Office Journal 21/06/2013 13654