Registers – Coded record sensors – Particular sensor structure
Patent
1997-02-26
1999-11-30
Pitts, Harold
Registers
Coded record sensors
Particular sensor structure
235467, G06K 710
Patent
active
059927496
ABSTRACT:
A data symbol reader includes a reading head which is positionable on a data symbol to be read, in which the reading head is provided with an opening for surrounding the data symbol when the reading head is positioned on the data symbol. At least one light emitter is provided for emitting light toward the opening to illuminate the data symbol and an image pick-up device is provided on which an image of the data symbol illuminated by the at least one light emitter is to be formed. A window through which the data symbol can be seen is provided and a light-splitting optical system is positioned between the opening and the window for splitting light incident on the light-splitting optical system which has passed through the opening into two beams. One of the two beams of light is received by the image pick-up device and that the other of the two beams of light is directed to the window, wherein the one of the two beams of light includes at least a part of the light emitted by the at least one light emitter.
REFERENCES:
patent: 4818856 (1989-04-01), Matushita
patent: 5428212 (1995-06-01), Tani et al.
patent: 5574272 (1996-11-01), Seo et al.
patent: 5576527 (1996-11-01), Sawanobori
patent: 5589678 (1996-12-01), Atsumi et al.
patent: 5600116 (1997-02-01), Seo et al.
Asahi Kogaku Kogyo Kabushiki Kaisha
Pitts Harold
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