Optical film using diffraction grating and display device...

Liquid crystal cells – elements and systems – Liquid crystal optical element – Liquid crystal diffraction element

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C349S202000, C349S113000, C349S082000, C257S079000, C257S080000, C257S081000

Reexamination Certificate

active

07423719

ABSTRACT:
An optical diffusion film comprises a plurality of diffraction grating cells formed on a substrate, each cell comprising a plurality of curved gratings disposed in parallel with each other and containing the same profile. Such film can be manufactured by embossing, using an original plate formed by etching a photosensitive material by means of an electronic beam exposure system to produce gratings. When such a film is provided with a reflection layer and exposed to light coming obliquely from above, highly bright and diffracted light is emitted in a predetermined direction.

REFERENCES:
patent: RE26506 (1968-12-01), Rogers
patent: 5122888 (1992-06-01), Iizuka et al.
patent: 5301062 (1994-04-01), Takahashi et al.
patent: 5506701 (1996-04-01), Ichikawa
patent: 5602679 (1997-02-01), Dolgoff et al.
patent: 5731858 (1998-03-01), Hisatake et al.
patent: 5808784 (1998-09-01), Ando et al.
patent: 5900982 (1999-05-01), Dolgoff et al.
patent: 6075581 (2000-06-01), Shirochi
patent: 6088076 (2000-07-01), Ogawa et al.
patent: 6118516 (2000-09-01), Irie et al.
patent: 6118586 (2000-09-01), Tanabe et al.
patent: 6147802 (2000-11-01), Itoh et al.
patent: 6271966 (2001-08-01), Tanabe et al.
patent: 6445500 (2002-09-01), Itoh
patent: 6587275 (2003-07-01), Lee et al.
patent: 2002/0036731 (2002-03-01), Takahashi et al.
patent: 2003/0076423 (2003-04-01), Dolgoff
patent: 2003/0128917 (2003-07-01), Turpin et al.
patent: 2003/0151784 (2003-08-01), Kitamura et al.
patent: 2003/0197906 (2003-10-01), Furuta et al.
patent: 56-51772 (1981-05-01), None
patent: 64-81633 (1989-03-01), None
patent: 5-100201 (1993-04-01), None
patent: 8-505716 (1996-06-01), None
patent: 1997-000066 (1997-01-01), None
patent: 9-152586 (1997-06-01), None
patent: 9-178949 (1997-07-01), None
patent: 9-222512 (1997-08-01), None
patent: 9-510029 (1997-10-01), None
patent: 11-125707 (1999-05-01), None
patent: 11-202112 (1999-07-01), None
patent: 11-202793 (1999-07-01), None
patent: 11-287991 (1999-10-01), None
patent: 11-326618 (1999-11-01), None
patent: 2000-39508 (2000-02-01), None
patent: 2000-106021 (2000-04-01), None
patent: 2000-266914 (2000-09-01), None
patent: 2001-116908 (2001-04-01), None
patent: 1999-0064007 (1999-07-01), None
patent: 275109 (1996-05-01), None
patent: 324791 (1998-01-01), None
Ronald W. Waynant and Marwood N. Ediger Electro-Optics hand book (McGraw-Hill) , pp. 2.14-2.17 (1994) ( copies given to AR Olenginski at Interview).
Gregory p. Behrmann et al., “Excimer laser micromachining for rapid fabrication of diffractive optical elements” Applied optics, vol. 36, No. 20, Jul. 10, 1997.( copies given to AR Olengenskia t interview).
E. Pawlowski “Thin film depostion: an alternative technique for the fabrication of bianry optics with high efficiency” ( copies given to AR Olengenski at interview).
Taiwanese Office Action mailed Apr. 11, 2005 cited in corresponding Taiwanese Application No. 090121640.
European Search Report dated Oct. 12, 2006, for related European Patent Application No. EP 01 961 204.3-1234.
Korean Patent Office Action, mailed Apr. 8, 2008 and issued in corresponding Korean Patent Application No. 10-2002-7005537.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Optical film using diffraction grating and display device... 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 film using diffraction grating and display device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical film using diffraction grating and display device... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3982080

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.