| 摘要 |
<p>The glass has a frame (2) supporting lenses (19, 22). An electronic circuit allows a user to control a light source i.e. LED, of an electricity supply source. An eyepiece (1) and the frame are in cylindrical form and arranged coaxially with each other. The eyepiece and the frame are partially overlapped with each other, where a housing (8) is defined between the eyepiece and the frame for placing the electricity supply source and the electronic circuit. The eyepiece includes a tapping (5) arranged to cooperate with a threading (6) of the frame.</p> |
