Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1997-05-20
1998-06-16
Frahm, Eric
Facsimile and static presentation processing
Facsimile
Recording apparatus
347237, H04N 100, G01D 9042
Patent
active
057679797
ABSTRACT:
A light source apparatus for a scanner secures a uniform illuminance. The light source apparatus includes a plurality of light emitting diodes arranged at regular intervals. The light emitting diodes disposed at the periphery are provided with a higher voltage and the light emitting diodes disposed at near the center are provided with a lower voltage, so as to compensate for a loss of the light beam at the outer side. Further, the light source apparatus includes a constant-current source for providing the light emitting diodes with a constant current.
REFERENCES:
patent: 4727428 (1988-02-01), Futatusgi et al.
patent: 4780731 (1988-10-01), Creutzmann et al.
patent: 4831395 (1989-05-01), Pham et al
patent: 4837587 (1989-06-01), Ng
patent: 4982204 (1991-01-01), Van Peteghem et al.
patent: 5034757 (1991-07-01), Godlove
patent: 5099192 (1992-03-01), Thayer et al.
patent: 5264868 (1993-11-01), Hadley et al.
patent: 5389953 (1995-02-01), Agar et al.
patent: 5414534 (1995-05-01), Bindon
patent: 5453777 (1995-09-01), Pensavecchia et al.
patent: 5514865 (1996-05-01), O'Neil
patent: 5585836 (1996-12-01), Pham et al.
Bushnell Esq. Robert E.
Frahm Eric
Samsung Electronics Co,. Ltd.
LandOfFree
Led light source apparatus for scanner and method for controllin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Led light source apparatus for scanner and method for controllin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Led light source apparatus for scanner and method for controllin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1732055