Registers – Coded record sensors – Particular sensor structure
Patent
1997-02-19
1999-09-28
Le, Thien Minh
Registers
Coded record sensors
Particular sensor structure
235472, G06K 710
Patent
active
059592834
ABSTRACT:
An optical reading apparatus for moving a mirror in a back and forth motion such that the mirror scans the light reflected from an optical pattern and sequentially projects narrow segments of the reflected image onto a linear image sensor. Moving the mirror includes means for mounting the mirror within a movable case which is mounted on a shaft to selectively cause the case to go back and forth in a seesaw-like fashion. As the case goes back and forth, it causes the mirror to sweep or scan across the reflected image of an optical pattern. As the mirror sweeps across the reflected image of the optical pattern it sequentially projects different segments of the optical pattern onto the linear image sensor until the entire optical pattern is projected onto the linear image sensor. The linear image sensor is operable at a high rate of speed and is sufficiently sensitive that it can sense numerous (e.g., 50, or more) segments of the reflected image during one sweep of the mirror. The image sensor may be a solid state device having a large number of photosensitive elements formed along a row. In a preferred embodiment, the light for illuminating the optical pattern to be read is also mounted within the movable case so as to move with the case, whereby projected light is swept across the optical pattern as it is being read, with greater illumination being provided for those segments whose reflected light is being projected on the image sensor.
REFERENCES:
patent: 4578571 (1986-03-01), Williams
patent: 4805175 (1989-02-01), Knowles
patent: 4893196 (1990-01-01), Koshiyouji et al.
patent: 5144120 (1992-09-01), Krichever et al.
patent: 5191197 (1993-03-01), Metlitsky et al.
patent: 5202784 (1993-04-01), Reddersen
patent: 5206492 (1993-04-01), Shepard et al.
patent: 5254844 (1993-10-01), Krichever et al.
patent: 5282053 (1994-01-01), Robideau
patent: 5354977 (1994-10-01), Roustaei
patent: 5367379 (1994-11-01), Makino
patent: 5371348 (1994-12-01), Kumar et al.
patent: 5386106 (1995-01-01), Kumar
patent: 5455412 (1995-10-01), Imagawa et al.
patent: 5477044 (1995-12-01), Aragon
patent: 5521367 (1996-05-01), Bard et al.
patent: 5572008 (1996-11-01), Sakai et al.
patent: 5602379 (1997-02-01), Uchimura et al.
Kera Toshiei
Tawara Takao
Le Thien Minh
Opticon Inc.
Schanzer Henry
Sherr Daniel
LandOfFree
Optical pattern reading apparatus with movable optical unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical pattern reading apparatus with movable optical unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pattern reading apparatus with movable optical unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-706034