Optical reading head

Details Optical reading head Optical reading head

1977-12-14

1979-07-10

Smith, Alfred E.

Radiant energy

Luminophor irradiation

With ultraviolet source

235462, G01N 2138

Patent

active

041609026

ABSTRACT:
Optical reading head, particularly for reading luminescent code bars on documents and the like, which reading head is provided with a source of light for irradiating the bars, with a detector including a hollow optical guide means for collecting the rays emitted by the bars, said guide means being made of a filter material transmitting ultraviolet radiation at least at the end of said guide near the point where the rays are collected.

REFERENCES:
patent: 3662181 (1972-05-01), Hercher et al.

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