Axial angle encoder
专利汇可以提供Axial angle encoder专利检索，专利查询，专利分析的服务。并且PURPOSE: To improve the precision of the encoder by reducing the sensitivity to the eccentric error by mounting one side of two optical modulators, each of which has a specific optical area, on the axis and by applying the light, which passes through both modulators, to the optical detector through a specific lens.
CONSTITUTION: The first optical modulator 20, in which transparent and opaque areas are arranged alternately, periodically and circularly, is mounted on the axis 50. Also the second optical modulator 30 provided with transparent areas, which are 180° out-of-phase as compared with the period of transparent area of the first modulator, and with opaque area is fixed independently of the rotation of the axis. The light, which is projected from the light sources 100, 110, 120 and passes through both the modulators 20, 30, is condensed by the twins type lenses 280, 290, 300 in which the first and second lenses that condense the light to the first and second positions are formed in a body, and is received by the optical detector of the circuit board 45 to produce the first and second electric signals respectively.
COPYRIGHT: (C)1980,JPO&Japio，下面是Axial angle encoder专利的具体信息内容。
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