JPS6410622U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a rotary encoder showing an embodiment of this invention, Fig. 2 is an explanatory diagram showing the correspondence between the fixed slit plate slit in Fig. 1 and the light emitting element (light receiving element), Fig. 3 1 is an explanatory diagram of the rotating slit disc shown in FIG. 1, and FIGS. 4 and 5 are explanatory diagrams of the conventional fixed slit disc, respectively. In the figure, 2, 3, 4 are light emitting elements, 5, 6,
7 is a light receiving element, 10 is a fixed slit plate, 11, 1
2 and 13 are slits, 14 is a rotating slit disk,
15, 16, and 17 are slits. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] Support parts for two pairs of light emitting elements and light receiving elements provided on the same diameter at a predetermined interval, and a pair of light emitting elements provided on a different diameter from the above. and a light-receiving element support part, respectively, wherein the light-emitting element and the light-receiving element are attached to the two pairs of light-emitting element and light-receiving element support parts and the one pair of light-emitting element and light-receiving element support parts; A first slit corresponding to the outer peripheral half of one of the two light emitting elements and a light receiving element, a second slit corresponding to the center half of the other light emitting element, and a second slit corresponding to the pair of light emitting elements. a fixed slit plate provided with a third slit; two rows of slits provided with a predetermined phase difference between them on diameters corresponding to the first slit and the second slit, respectively; A rotary encoder comprising: a rotating slit disk having a slit for detecting the origin provided on a diameter corresponding to the third slit;