Optical: systems and elements – Absorption filter – Filters in optical parallel
Reexamination Certificate
2007-09-11
2007-09-11
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Absorption filter
Filters in optical parallel
C359S885000, C359S889000, C359S892000, C348S743000, C356S418000, C353S084000
Reexamination Certificate
active
11053840
ABSTRACT:
In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the center of the disk. Consequently, each of the color filter segments is prepared by cutting the material only to the circular arc and the two straight lines, thereby simplifying the production process. And, the support member can be duly and surely positioned such that the center of the support member is set to coincide with the intersecting point of the two straight lines. Thus, the positional accuracy, the component cost reduction, and the production cost reduction can be achieved at the same time.
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Adachi Shigeyuki
Asakawa Toshiaki
Niwa Shin-ichi
Takao Kuniyuki
Boutsikaris Leonidas
Minebea Co. Ltd.
Oliff & Berridg,e PLC
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