| 摘要 |
An in-the-ear canal hearing aid comprises a microphone (1), an amplifier (2), an electromechanical transducer (3), for example in the form of a telephone, and an infrared detector (15). The hearing aid further includes an extraction means (12) for extracting the hearing aid from the ear canal. The extraction means (13) is in the form of an optical conductor for conducting infrared radiation. One end (20) of the conductor (13) is mechanically attached to the hearing aid housing (4,6) in a place so that the end (20) of the conductor (13) is optically coupled to the detector (15). As a result, the extraction means (12) has as its second function conducting the infrared radiation to the detector of the hearing aid. <IMAGE> |
