| 摘要 |
A LED-lamp has a rotationally symmetrical first housing part (10) comprising LED (18) and a rotationally symmetrical second housing part (12) which has a plane-convex lens (30) in the beam path of the LED (18). A rotation adjustment system comprises a guide slot helically mounted around the longitudinal axis, and with rotation of both housing parts (10,12) relative to one another, the spacing between the lens (30) and the LED (18) can be adjusted in an axial direction, within an angular adjustment range of 20 to 80 degrees between the helical line and the longitudinal axis. |
