Photocopying – Projection printing and copying cameras – Illumination systems or details
Patent
1998-01-13
2000-05-16
Mathews, Alan A.
Photocopying
Projection printing and copying cameras
Illumination systems or details
355 35, G03B 2754, G03B 2772
Patent
active
060644680
ABSTRACT:
A light source position adjusting method and system are used for an image input apparatus including a light source for irradiating film original. A light source moving device is operable from the outside of the external cover of the image input apparatus. A position of the light source is adjusted from the outside of the external cover using a measuring tool so that the quantities of light are uniformly balanced at a plurality of measuring points on the plane of the film original. The measuring tool is thereafter removed. The average value of the output values in the specific pixel regions of the image sensor corresponding to the plurality of measuring points on the plane of the film original are determined and the balance output values of the respective pixel regions are stored. The position of the light source is adjusted so that the output values of the image of the light source are made equal or closer to the balanced output values stored.
REFERENCES:
patent: 4174173 (1979-11-01), Pone', Jr.
patent: 5005040 (1991-04-01), Norita et al.
patent: 5726739 (1998-03-01), Hayata
patent: 5744795 (1998-04-01), Bianchi et al.
patent: 5796466 (1998-08-01), Choi
Fuji Photo Film Co. , Ltd.
Kim Peter B.
Mathews Alan A.
LandOfFree
Light source position adjusting device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light source position adjusting device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light source position adjusting device and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-263433