| 摘要 |
A touch panel input stylus comprises a casing, a lens, a shading member, and a light emitting element. The lens, the shading member, and the light emitting element are received in the casing. The shading member defines a stepped through aperture. The stepped through aperture includes a light through hole and a receiving hole having a greater diameter than the light through hole. A longitudinal positioning structure is provided in the receiving hole. The light emitting element is received and fixed in the receiving hole firmly by the longitudinal positioning structure. The longitudinal positioning structure is deformable. The light emitted from the light emitting element passes through the light through hole and then travels through the lens.
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