| 摘要 |
A lamp unit (10) comprises a base (12), at least one LED (14), and an optical lens (16) mounted adjacent to the LED. The base includes a heat sink (20) for the LED. The optical lens is configured to provide a substantially spherically- uniform distribution of light around the optical lens, whereby the lamp unit can replace an incandescent lamp unit. The light fitting (42) comprises a lamp unit and a power supply for the lamp unit, the power supply being separate from the lamp unit. The method of making the optical lens for the lamp unit includes the step of printing a number of reflective elements onto a sheet of prismatic film whereby the optical lens will provide a substantially spherically uniform distribution of light from the LED. |
