Dental x-ray film viewing device

Details Dental x-ray film viewing device Dental x-ray film viewing device

2006-09-26

2008-10-07

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Photographic detector support

Dental

C250S559020

Reexamination Certificate

active

07431497

ABSTRACT:
A dental x-ray film viewing device includes a film reader having a digital video camera and an image display screen connected to the video camera for displaying an enlarged digital image of the x-ray film using signals transmitted directly from the video camera. The film reader includes a film illumination station that has a back-lighted film seat. The film seat includes a translucent plate and a non-transparent film anchoring wafer having an opening complimentary to the x-ray film for seating the x-ray film, and blocking light in an area surrounding the x-ray film. The film reader has a video camera having lens thereof focusing on the film window, and the lens has a distortion at the full field less than 3%. The device provides a substantially enlarged high resolution and high contrast digital image as an accurate representation of the original x-ray film, without digital processing by a computer.

REFERENCES:
patent: 4013833 (1977-03-01), Zimmerman
patent: 5870172 (1999-02-01), Blume
patent: 6097902 (2000-08-01), Blume
patent: 6644851 (2003-11-01), Kumagai
patent: 7053391 (2006-05-01), Blume
patent: 2004/0073092 (2004-04-01), Miles
patent: 2006/0038141 (2006-02-01), Blume

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