Image reading device having a telecentric optical system and a b

Details Image reading device having a telecentric optical system and a b Image reading device having a telecentric optical system and a b

1992-05-11

1993-02-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250226, H01J 4014

Patent

active

051873583

ABSTRACT:
An image reading device includes a plural-line sensor containing plural line sensor arrays formed on a substrate, a telecentric imaging optical system for forming the image of an object on the sensor, and a blazed diffraction grating positioned in the optical path between the imaging optical system and the sensor and adapted to separate the light from the object into plural color components and to guide the color-separated light to respectively corresponding sensor arrays.

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Applied Optics article entitled "Color Separation Gratings", vol. 17, No. 15, Aug. 1, 1978, pp. 2273-2279.

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