Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2005-05-10
2005-05-10
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S23700G, C356S616000
Reexamination Certificate
active
06891150
ABSTRACT:
It is an object of this invention to provide a mold for manufacturing an optical scale which can be easily manufactured and is capable of outputting high-precision position signals. In order to achieve this object, there is provided a mold for an optical scale, which has fixed and movable platens and is used to mold an optical scale, wherein both a first mold portion for forming a shaft mount hole for the optical scale and a second mold portion for forming a slit portion of the optical scale are arranged in one of the fixed and movable platens.
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Igaki Masahiko
Takayama Manabu
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Luu Thanh X.
Yam Stephen
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