Method of making a plurality of adjacent light pipe elements

Details Method of making a plurality of adjacent light pipe elements Method of making a plurality of adjacent light pipe elements

1976-09-13

1980-06-17

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264138, 264293, 264295, B29D 1100, G02B 516

Patent

active

042083630

ABSTRACT:
A method of making a plurality of adjacent light pipe elements, the light pipe elements adapted for use in illuminating a microfiche. The ends of the light pipe elements are spaced apart from each other, to thereby coincide with spaced microimages on a microfiche. The method includes the steps of die-deforming a plastic sheet in the general form of a flat elbow, placing saw-tooth cuts at one end thereof, and subsequently rolling the sheet about an axis.

REFERENCES:
patent: 2351034 (1944-06-01), Gabor
patent: 3043910 (1962-07-01), Hicks, Jr.
patent: 3473872 (1969-10-01), Okamura
patent: 3718515 (1973-02-01), Goldstein
patent: 3728422 (1973-04-01), Sugaya
patent: 3839514 (1974-10-01), Nauta
patent: 3864034 (1975-02-01), Yevick

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