Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Reexamination Certificate
2005-09-13
2005-09-13
Porta, David (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
C250S559390, C356S429000
Reexamination Certificate
active
06943363
ABSTRACT:
Illuminating light emitted from a light source is led via a condenser lens, an optical fiber, a half-silvered mirror, and a condenser lens to a reflector. The reflector reflects the illuminating light to a CCD device through a telecentric optical system which comprises the condenser lens, the half-silvered mirror, and an aperture member. The illuminating light applied to the CCD device is greatly reduced in amount as it passes through a light-transmissive sheet-like body twice. The light-transmissive sheet-like body itself or an edge thereof can be detected with high accuracy even if the light-transmissive sheet-like body has a high transmittance.
REFERENCES:
patent: 3594087 (1971-07-01), Miranda
patent: 4511246 (1985-04-01), Nishiyama
patent: 4713550 (1987-12-01), Anzai et al.
patent: 5260564 (1993-11-01), Bruggeling et al.
patent: 5764367 (1998-06-01), Schaede et al.
patent: 6151117 (2000-11-01), Tuhro et al.
patent: 6323954 (2001-11-01), Halter
patent: 6489624 (2002-12-01), Ushio et al.
patent: 2000-97867 (2000-04-01), None
Ishii Yoshiyuki
Onishi Kazuo
Porta David
Yam Stephen
LandOfFree
Apparatus for detecting light-transmissive sheet-like body does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for detecting light-transmissive sheet-like body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting light-transmissive sheet-like body will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3378775