Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-08-02
1990-11-06
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358113, 250223B, 356240, H04N 718
Patent
active
049690370
ABSTRACT:
An optical pick-up device for image processing systems has an objective for generating an optical image of a subject to be registered, an image-to-signal transducer, particularly a CCD camera that converts the optical image into a video signal and an illumination device for illumination of the subject to be registered in incident light. The rugged and high-performance illumination device, that yields an optimum light distribution in the plane of registration, has a plurality of infrared diodes that are arranged with equal spacing on at least one circle coaxial with the optical axis of the objective. It also has at least one annular deflection device that is similarly arranged coaxial with the optical axis. This deflection device concentrates the light emitted by the infrared diodes obliquely onto the subject from all sides.
REFERENCES:
patent: 4026414 (1977-05-01), Ellinger
patent: 4293219 (1981-10-01), Ducloux
patent: 4454542 (1984-06-01), Miyorazawa
patent: 4775889 (1988-10-01), Yoshida
Industrie-Elektrik and Electronic, vol. 29, 1984, No. 9, pp. 60-62.
Electronik 4/Feb. 19, 1988, pp. 121-126.
Gerhard Detlef
Poleschinski Richard
Kostak Victor R.
Siemens Aktiengesellschaft
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