| 摘要 |
Electronic circuitry (Figs 3, 4, 5, 6) is used to randomly and independently change the intensity of red, green, and blue light sources to create all the colours of the spectrum. The light sources can be incandescent or halogen lamps covered with filters, or red, green and blue light emitting diodes. The random voltages may be derived digitally or from electronic noise circuits, and may vary slowly or quickly. An embodiment of the invention is a glass globe 2, containing minute bubbles or filagree of small white particles in order to mix the light, placed on a stand 1 which houses a group of LEDs that emit red, green and blue light. Enclosure 3 carries the electronic circuitry for generating the random voltages. Alternatively, a glass cylinder or vase can be used instead of the globe and filled with glass marbles to create a similar effect. If buildings are to be illuminated, a triac or tyristor interface circuit would be required (Fig 6) to drive the lamps, and stepper motors could connected to the random voltage generators to move the lamps in a random manner. |
