Filter member manufacturing method, filter member cutting...

Details Filter member manufacturing method, filter member cutting... Filter member manufacturing method, filter member cutting...

2005-12-27

2005-12-27

McDonald, Rodney G. (Department: 1753)

Coating processes

With cutting, holding, severing, or abrading the base

C427S293000, C427S162000, C427S164000, C427S165000, C427S166000, C264S001100, C204S192260

Reexamination Certificate

active

06979476

ABSTRACT:
A plurality of filter members on which filter films with good characteristics are formed in a more or less circular arc form pattern are obtained by producing a filter member in which all of an annular filter film with good characteristics is formed on the surface of a single glass substrate, and then cutting this filter member through the center of the annular shape of the filter film. A plurality of small filter member pieces140, 140, . . .are obtained by cutting the filter members obtained by the above-mentioned division in the direction perpendicular to the chords of the circular arcs; then, the small filter member pieces are rearranged so that the filter films120a, 120a, . . . with good characteristics on the small filter member pieces are lined up in a more or less rectilinear pattern. The desired filter chips are then obtained by cutting these rearranged small filter member pieces in the direction perpendicular to the initial cutting direction. Furthermore, in cases where the filter films are optical multi-layer films, the filter members are placed on the stage so that the filter films are on the upper surface, and cutting is accomplished by downcutting using a dicing saw.

REFERENCES:
patent: 4325083 (1982-04-01), Rouchon et al.
patent: 59-56577 (1984-04-01), None
patent: 63-60404 (1988-03-01), None
patent: 9-205071 (1997-08-01), None
patent: 2000-047027 (2000-02-01), None
patent: 2000-47027 (2000-02-01), None
Machine Translation of Japan 2000-047027.

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