Tapered light guide plate for surface light source device...

Details Tapered light guide plate for surface light source device... Tapered light guide plate for surface light source device...

2005-06-24

2010-12-14

Negron, Ismael (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S026000, C362S626000, C362S628000, C362S615000, C264S001100, C264S001240, C264S001290, C264S005000, C385S146000, C385S901000

Reissue Patent

active

RE041995

ABSTRACT:
There is provided a very thin light guide plate for a surface light source device and a method of manufacturing it without the use of high-precision molding machine. A surface light source device using this light guide plate generates outgoing light having high uniformity. According to the manufacturing method, a light guide plate free from a weld line or warp can be manufactured with good transferring characteristics. The light guide plate is thick on an incident surface1side and thin on a lower surface4side. At the central portion of an incident surface1in a longitudinal direction, a projecting portion obtained by cutting an overhang portion7at a position a distance D apart from the incident surface1is formed. The cut surface of the projecting portion is not made specular and is kept rough. In molding of the light guide plate, a molten material is supplied from the position of a gate mark9.After molding, the overhang portion7is cut off by an ordinary cutter, thereby obtaining a light guide plate.

REFERENCES:
patent: 2523290 (1950-09-01), Gardner
patent: 3132810 (1964-05-01), Ostensen
patent: 3333300 (1967-08-01), Cohan
patent: 3464133 (1969-09-01), Poray
patent: 3617727 (1971-11-01), Balfour-Lynn
patent: 4252294 (1981-02-01), Uchio
patent: 4257084 (1981-03-01), Reynolds
patent: 4706173 (1987-11-01), Hamada et al.
patent: 4714983 (1987-12-01), Lang
patent: 4729185 (1988-03-01), Baba
patent: 4909604 (1990-03-01), Kobayashi et al.
patent: 4974122 (1990-11-01), Shaw
patent: 5050946 (1991-09-01), Hathaway et al.
patent: 5136480 (1992-08-01), Pristash et al.
patent: 5186955 (1993-02-01), Morita et al.
patent: 5237641 (1993-08-01), Jacobson et al.
patent: 5499165 (1996-03-01), Holmes, Jr.
patent: 5550676 (1996-08-01), Ohe et al.
patent: 52-107588 (1977-08-01), None
patent: 57-187223 (1982-11-01), None
patent: 61-179712 (1986-08-01), None
patent: 62-041028 (1987-02-01), None
patent: 62-179913 (1987-08-01), None
patent: 63-195622 (1988-12-01), None
patent: 64-057240 (1989-03-01), None
patent: 01-099822 (1989-04-01), None
patent: 01-023167 (1989-07-01), None
patent: 01-307702 (1989-12-01), None
patent: 02-126185 (1990-10-01), None
patent: 03-011502 (1991-01-01), None
patent: 3-59526 (1991-03-01), None
patent: 03-059526 (1991-03-01), None
patent: 03-098020 (1991-04-01), None
patent: 03-104906 (1991-10-01), None
patent: 3-104906 (1991-10-01), None
patent: 04-218089 (1992-08-01), None
patent: 04-12622 (1992-11-01), None
patent: 04-355408 (1992-12-01), None
patent: 5-75738 (1993-10-01), None
patent: 5-75739 (1993-10-01), None
patent: 06-000892 (1994-01-01), None
patent: 06-027329 (1994-02-01), None
patent: 08-006017 (1996-01-01), None
Office Action issued by U.S.P.T.O. on Dec. 1, 2004 in parent U.S. Appl. No. 09/977,241.
Ex parte Quayle Action issued by U.S.P.T.O. on Mar. 20, 2007 in parent U.S. Appl. No. 09/977,241.
Notice of Allowance issued by U.S.P.T.O. on Oct. 1, 2007 in parent U.S. Appl. No. 09/977,241.

Affiliated with

Also associated with

Rating

Tapered light guide plate for surface light source 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 Tapered light guide plate for surface light source device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tapered light guide plate for surface light source device... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4213283