发明名称 |
SCALE FOR ROTARY ENCODER, METHOD OF INJECTION-MOLDING SAME, AND ROTARY ENCODER USING SAME |
摘要 |
In a radial optical path type rotary encoder, in order to be able to reduce deterioration of resolution and variation among products due to burrs during molding and/or rounding of a die, a scale for a rotary encoder is provided with a scale body which is formed substantially in a cylindrical shape, the scale body having a side surface portion in which a light transmitting portion through which light passes and a light blocking portion by which light with a predetermined width in a circumferential direction is blocked are formed alternately in the circumferential direction, wherein the side surface on a light-incident side of the light blocking portion is formed outside a light transmittable region having an outer edge defined by a light beam tangent to the side surface of the light blocking portion amidst the light passing through the light transmitting portion, in a lateral cross-section view. |
申请公布号 |
US2014091212(A1) |
申请公布日期 |
2014.04.03 |
申请号 |
US201214124673 |
申请日期 |
2012.06.07 |
申请人 |
FUKUDA HIDEJI;SUNADA TAKUYA;KOMATSULITE MFG. CO., LTD.;KODENSHI CORPORATION |
发明人 |
FUKUDA HIDEJI;SUNADA TAKUYA |
分类号 |
G01D5/347 |
主分类号 |
G01D5/347 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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