| 摘要 |
A timepiece movement (10) is disclosed as including an hour-wheel (12) with an hour-shaft (12a) to which an hour-hand is securable, a minute-wheel (14) with a minute-shaft (14a) to which a minute-hand is securable, a seconds-wheel (16) with a seconds-shaft (16a) to which a seconds-hand is securable, a light emitter (18) for emitting light, and a light receiver (20) for receiving the light emitted by the light emitter (18), in which the hour-shaft (12a) includes a first aperture (12b), the minute-shaft (14a) includes a second aperture (14b) and the seconds-wheel (16) includes a third aperture (16b), and the apertures (12b, 14b, 16b) allow the light emitted by the light emitter (18) to pass through, and to be received by the light receiver (20) only when the hour-wheel (12), the minute-wheel (14) and the seconds-wheel (16) are in a respective predetermined reference position. |
