| 摘要 |
PURPOSE: A lighting device for charge coupled device(CCD) camera is provided to improve preciseness of adjustment of direction of reflected light and to minimize a space needed for adjustment by indirectly adjusting the direction of reflected light to irradiate concentrated light on a part, to be mounted, in a part mounting device. CONSTITUTION: A lighting device includes light emission diodes(LED,22); and a waveguide(23). The waveguide has certain refractive index to concentrate light from the LEDs on a part to be mounted according to the refractive index and an outer shape thereof. The waveguide has grooves on a bottom surface thereof for the LEDs to be inserted in and is placed upon a printed circuit board(21) driving the LEDs. A shape of light beam(24) is determined by an outer shape of an emergent surface(23a) of the waveguide. |
