Filter device for color optical scanners

Details Filter device for color optical scanners Filter device for color optical scanners

1993-01-06

1994-11-08

Henry, Jon W.

Optical: systems and elements

Absorption filter

Movable in or out of optical path

359891, 359892, G02B 700, G02B 520, G02B 2600

Patent

active

053632478

ABSTRACT:
A tapered-shaped rotatable frame with at least three filter windows, with at least three filters installed on it, a lens stand which includes a supporting means to rotatably support the frame. The angle between the supporting means and the frame's surface is supplementary to the angle between the supporting means and the frontal surface of the lens.

REFERENCES:
patent: 2484323 (1949-10-01), Sweet
patent: 2616342 (1952-11-01), Thompson
patent: 4809062 (1989-02-01), Chen
patent: 5161069 (1992-11-01), Jowang

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