| 摘要 |
A light-emitting diode arrangement with a light-emitting diode that is light-transmissive in an axial direction of the type used in examining instruments for opthalmic optics. The light-emitting diode serves as a constant light source in conjunction with a diffusion disk, such as for fixation point stimuli, while the disk also serves as a stimulus that is lit by an additional, switchable light source, such as an incandescent lamp, whose light is transmitted through a light guide, such as an optical fiber, through the light-emitting diode to the disk. In a preferred embodiment, a color filter is arranged between the additional light source and the light-emitting diode and both the additional light source and light-emitting diode are axially displaceable relative to the diffusion disk so as to enable adjustment of their respective luminous densities. |
