Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1518/CHENP/2012 A
(19) INDIA
(22) Date of filing of Application :20/02/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : A LIGHTING DEVICE AND A LENS SUITABLE FOR SUCH A LIGHTING DEVICE
(51) International classification :F21V7/00
(31) Priority Document No :09168138.7
(32) Priority Date :19/08/2009
(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/IB2010/053647
:12/08/2010
: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)HOLTEN Petrus Adrianus Josephus
2)TORDINI Giorgia
(57) Abstract :
A lighting device (1) comprises a light source (2) and a lens (3, 23, 33, 43, 53, 63) positioned in front of the light source (2). The
lens (3, 23, 33, 43, 53, 63) is provided with a light entrance surface on a side facing the light source (2) and a light exit surface
(14, 38) on a side remote from the light source (2). The lens (3, 23, 33, 43, 53, 63) comprises a number of strip-shaped
interconnected elongated light guiding elements (4, 24, 34, 54, 64), of which first ends (7, 27, 37, 57) and spaced apart second
ends (5, 25, 35, 55, 65) comprise the light entrance surface and light exit surface, respectively. Light beams emitted by the light
source (2) are transmitted by total internal reflection in the elongated light guiding elements (4, 24, 34, 54, 64) from the first ends
(7, 27, 37, 57) to the spaced apart seconds ends (5, 25, 35, 55, 65).
No. of Pages : 17 No. of Claims : 9
The Patent Office Journal 21/06/2013 13842