Optical waveguides – Noncyclindrical or nonplanar shaped waveguide
Reexamination Certificate
2007-01-30
2007-01-30
Connelly-Cushwa, Michelle (Department: 2874)
Optical waveguides
Noncyclindrical or nonplanar shaped waveguide
C362S610000, C362S612000
Reexamination Certificate
active
11289530
ABSTRACT:
There is disclosed an apparatus having a display zone, such as a liquid crystal screen (4), and including an optical device for forming a decorative pattern in the form of a figurative image. The optical device for forming a figurative image includes an optical guide (1), at least partially superposed onto the display zone (4) and having two large faces (10, 11) and one lateral face (12). Optical extractors (20) each having at least one surface (21) for reflecting light are arranged in a first group in at least one of the large faces (11). A light source (8, 8a,8b,8c,8d) is arranged so as to emit light in the direction of the reflective surfaces (21) via the lateral face (12) of the optical guide. Thus, each of the reflective surfaces causes a reflected light beam to be formed in a well defined direction, the set of the light beams forming a figurative image in that direction, which can typically be chosen to be the normal in relation to the mid-plane of the optical guide. The optical guide according to the present invention is further provided with a second group of optical extractors having a predefined position in relation to the display zone (4), for illuminating the latter, possibly in relation to the same light source as the first group of optical extractors.
REFERENCES:
patent: 6745506 (2004-06-01), Maas et al.
patent: 6752505 (2004-06-01), Parker et al.
patent: 6966684 (2005-11-01), Sommers et al.
patent: 6981791 (2006-01-01), Higashiyama
patent: 2002/0145593 (2002-10-01), Boyd et al.
patent: 2002/0149925 (2002-10-01), Epstein et al.
patent: 2003/0206407 (2003-11-01), Yang
Asulab S.A.
Chu Chris
Connelly-Cushwa Michelle
LandOfFree
Optical device with dual function of illumination and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical device with dual function of illumination and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical device with dual function of illumination and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3805136