Optical apparatus for image scanning

Details Optical apparatus for image scanning Optical apparatus for image scanning

1993-03-15

1994-08-23

Ben, Loha

Optical: systems and elements

Lens

With light limiting or controlling means

359205, 250562, G02B 2608, G01N 2188

Patent

active

053412451

ABSTRACT:
An optical apparatus for image scanning for reading image information recorded on an original by irradiating the original with reading light and reading the light transmitted through or the light reflected from the original using a photoelectric converter. In the optical apparatus for image scanning, a light source irradiates the original with the reading light. A slit is disposed between the light source and the original so as to control a range where the original is irradiated with the reading light. Condenser lenses are disposed between the slit and the original so as to concentrate the reading light transmitted through the slit on an image reading portion of the original. The photoelectric converter receives the reading light from the original and converts the received light into an electric signal. Another condenser lens is disposed between the original and the photoelectric converter so as to converge the reading light from the original on the photoelectric converter.

REFERENCES:
patent: 4168512 (1979-09-01), Ito et al.
patent: 4972091 (1990-11-01), Cielo et al.

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