Original reading apparatus

Details Original reading apparatus Original reading apparatus

1981-04-02

1984-02-14

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358213, 358250, H04N 102

Patent

active

044320221

ABSTRACT:
There is provided an original reading apparatus comprising a table for supporting thereon an original to be read, the photosensor for receiving a light beam from said original and an ommateal optical system. The optical system images the light beam from the original on the photosensor. The optical system has a plastic lens block in which a plurality of lenses are formed integral with one another. The plastic lens block is divided into an effective lens portion having the function of condensing the light beam and a lens protecting portion for protecting the effective lens portion. The distance between the outer end surface of the lens protecting portion and the effective lens portion is equal to or greater than one-half of the thickness of the effective lens portion.

REFERENCES:
patent: 4154506 (1979-05-01), Yevick
patent: 4314159 (1982-02-01), Davis
patent: 4352128 (1982-09-01), Ohori et al.

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