Lens system for reading image

Details Lens system for reading image Lens system for reading image

1994-02-22

1995-12-12

Epps, Georgia Y.

Optical: systems and elements

Lens

Multiple component lenses

359793, 359717, G02B 906

Patent

active

054755360

ABSTRACT:
A lens system used for reading an image, the system being constructed of two lenses and presents sufficient performance for reading an image in an image scanner, a facsimile, etc. The system is constructed of a positive meniscus image-forming lens and a positive meniscus auxiliary lens. The convexes of both lenses face an object. The image-forming lens has at least one aspherical surface or it has an aspherical surface formed by joining an aspherical surface layer formed of a transparent material to the surface of a spherical glass lens. Both surfaces of the auxiliary lens are aspherical.

REFERENCES:
patent: 4525040 (1985-06-01), Nakamura

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