Nowadays artificial light is used in many areas of human life. Dedicated lighting allows to emphasize selected features of technical and biological objects, stimulates the growth of plants or enhances the attractiveness of products or artistic works. In this paper a developed low-cost lamp with an adjustable spectrum was presented. As light sources, several LEDs of both narrow-band and wide-band spectrum were selected. A multi-channel Raspberry PI was applied for LEDs driving and ensuring the user’s interface. To properly mix light from several different LEDs, a dedicated integration sphere was used, covered with paint based on barium sulfate.
Design and development of lamp of adjustable spectrum
